Allentown, Pennsylvania Weather Conditions

Severe Weather Alerts

Your Weather

To update your location please enter your ZIP code, city, state, airport code or country in the field below. Weather by E-mail: Forecast storm alerts. Weather E-Mail Alert Sign Up »

Current Conditions

  • 72°
  • Overcast
  • Wind: South 5 mph
  • Humidity: 88%
  • Visibility: 7.0 miles
  • Dew Point: 68°
  • Pressure: 30.17 in. +

Select a Section

Click a section below for more information.

Next 12 Hours

9  am
12  pm
3  pm
6  pm
9  pm
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Chance of a Thunderstorm
Chance of T-storms
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
75°
83°
85°
83°
76°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Thursday
  • Chance of a Thunderstorm
  • High: 88 °
  • Low: 60 °
  • Chance of T-Storms
  • Friday
  • Clear
  • High: 85 °
  • Low: 64 °
  • Clear
  • Saturday
  • Partly Cloudy
  • High: 87 °
  • Low: 66 °
  • Partly Cloudy
  • Sunday
  • Chance of Rain
  • High: 76 °
  • Low: 53 °
  • Chance of Rain
  • Monday
  • Chance of Rain
  • High: 64 °
  • Low: 51 °
  • Chance of Rain

Forecast for Allentown, Pennsylvania

Updated: 5:05 AM EDT on January 28, 2015

  • Thursday

    Partly cloudy early followed by scattered thunderstorms this afternoon. High 88F. Winds WSW at 5 to 10 mph. Chance of rain 50%.

  • Thursday Night

    Partly cloudy skies. Low near 60F. Winds light and variable.

  • Friday

    Sunny, along with a few afternoon clouds. A stray shower or thunderstorm is possible. High near 85F. Winds ESE at 5 to 10 mph.

  • Friday Night

    Partly cloudy in the evening with more clouds for later at night. Low 64F. Winds SSE at 5 to 10 mph.

  • Saturday

    Cloudy skies early, followed by partial clearing. High 87F. Winds S at 10 to 15 mph.

  • Saturday Night

    Partly to mostly cloudy with scattered showers and thunderstorms later at night. Low 66F. Winds S at 5 to 10 mph. Chance of rain 40%.

  • Sunday

    Cloudy with showers. High 76F. Winds N at 5 to 10 mph. Chance of rain 60%.

  • Sunday Night

    Cloudy with occasional rain showers. Low 53F. Winds NE at 5 to 10 mph. Chance of rain 60%.

  • Monday

    Considerable cloudiness with occasional rain showers. High 64F. Winds ENE at 5 to 10 mph. Chance of rain 60%.

  • Monday Night

    Overcast with rain showers at times. Low 51F. Winds ENE at 5 to 10 mph. Chance of rain 60%.

  • Tuesday

    Showers in the morning, then cloudy in the afternoon. High 71F. Winds E at 5 to 10 mph. Chance of rain 60%.

  • Tuesday Night

    Partly cloudy skies. Low near 55F. Winds light and variable.

  • Wednesday

    Considerable clouds early. Some decrease in clouds later in the day. High 77F. Winds ESE at 5 to 10 mph.

  • Wednesday Night

    A few clouds. Low 59F. Winds light and variable.

  • Thursday

    Partly cloudy skies. High 83F. Winds SSE at 5 to 10 mph.

  • Thursday Night

    A few clouds. Low 62F. Winds SSE at 5 to 10 mph.

  • Friday

    Intervals of clouds and sunshine. High 87F. Winds SSE at 5 to 10 mph.

  • Friday Night

    Partly cloudy skies early followed by increasing clouds with showers developing later at night. Low 67F. Winds SSE at 5 to 10 mph. Chance of rain 40%.

  • Saturday

    Rain showers in the morning will evolve into a more steady rain in the afternoon. High 86F. Winds SE at 5 to 10 mph. Chance of rain 60%. Rainfall near a quarter of an inch.

  • Saturday Night

    Showers and thunderstorms. Low 67F. Winds ESE at 5 to 10 mph. Chance of rain 80%.

  • Sunday

    Showers and thundershowers in the morning giving way to periods of light rain in the afternoon. High 84F. Winds ESE at 5 to 10 mph. Chance of rain 60%.

  • Sunday Night

    Occasional light rain. Low 66F. Winds ESE at 5 to 10 mph. Chance of rain 60%.

Severe Weather Alert Descriptions

 Public Information Statement  Statement as of 6:52 am EDT on May 28, 2015


... NOAA Weather Radio all hazards is back on the air...

The NOAA Weather Radio all hazards broadcast from Howell, New Jersey
is back on the air... we thank you for your patience.



Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: South Filmore Street, Allentown, PA

Updated: 7:42 AM EDT

Temperature: 72.9 °F Dew Point: 73 °F Humidity: 99% Wind: NNE at 3.2 mph Pressure: 30.08 in Hourly Precipitation: - Heat Index: - Graphs

Location: Sherwood Road, Allentown, PA

Updated: 7:51 AM EDT

Temperature: 68.7 °F Dew Point: 62 °F Humidity: 80% Wind: North at - Pressure: 30.09 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: West Allen Street, Allentown, PA

Updated: 7:51 AM EDT

Temperature: 69.8 °F Dew Point: 68 °F Humidity: 94% Wind: North at - Pressure: 30.23 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Whitehall, Whitehall, PA

Updated: 7:50 AM EDT

Temperature: 68.5 °F Dew Point: 68 °F Humidity: 98% Wind: Calm Pressure: 29.75 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Hokendauqua, Whitehall, PA

Updated: 7:54 AM EDT

Temperature: 69.2 °F Dew Point: 68 °F Humidity: 96% Wind: Calm Pressure: 30.13 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Fountain Hill - Near ST Lukes hosp., Fountain Hill, PA

Updated: 7:53 AM EDT

Temperature: 75.0 °F Dew Point: 71 °F Humidity: 87% Wind: SW at 2.2 mph Pressure: 30.17 in Hourly Precipitation: 0.00 in Heat Index: 75 °F Graphs

Location: Lower Saucon Township, Bethlehem, PA

Updated: 7:53 AM EDT

Temperature: 70.7 °F Dew Point: 68 °F Humidity: 92% Wind: Calm Pressure: 29.96 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: West Bethlehem, Bethlehem, PA

Updated: 7:54 AM EDT

Temperature: 72.9 °F Dew Point: 68 °F Humidity: 86% Wind: Calm Pressure: 30.15 in Hourly Precipitation: 0.00 in Heat Index: 72 °F Graphs

Location: South Mountain, Bethlehem, PA

Updated: 7:48 AM EDT

Temperature: 69.8 °F Dew Point: 70 °F Humidity: 99% Wind: SSW at 1.7 mph Pressure: 30.05 in Hourly Precipitation: - Heat Index: - Graphs

Location: Woodfield Drive, Bethlehem, PA

Updated: 5:02 AM EDT

Temperature: 67.8 °F Dew Point: 66 °F Humidity: 93% Wind: North at - Pressure: 30.19 in Hourly Precipitation: - Heat Index: - Graphs

Location: Pheasant Hill Estates, Allentown, PA

Updated: 7:53 AM EDT

Temperature: 70.0 °F Dew Point: 69 °F Humidity: 98% Wind: Calm Pressure: 29.61 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Harvest Fields, East Texas, Allentown, PA

Updated: 7:53 AM EDT

Temperature: 70.7 °F Dew Point: 68 °F Humidity: 90% Wind: Calm Pressure: 30.10 in Hourly Precipitation: - Heat Index: - Graphs

Location: Upper Milford, Emmaus, PA

Updated: 7:54 AM EDT

Temperature: 70.2 °F Dew Point: 68 °F Humidity: 92% Wind: Calm Pressure: 29.47 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Werner Ent. Allentown, Allentown, PA

Updated: 7:53 AM EDT

Temperature: 68.6 °F Dew Point: 68 °F Humidity: 98% Wind: Calm Pressure: 30.11 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Hilltop, Coopersburg, PA

Updated: 7:54 AM EDT

Temperature: 70.7 °F Dew Point: 60 °F Humidity: 70% Wind: SW at 4.0 mph Pressure: 30.28 in Hourly Precipitation: 0.00 in Heat Index: 74 °F Graphs

Location: upper saucon township, Coopersburg, PA

Updated: 7:54 AM EDT

Temperature: 69.4 °F Dew Point: 68 °F Humidity: 97% Wind: SW at 4.0 mph Pressure: 30.12 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Gwenmawr Road, Bethlehem, PA

Updated: 6:57 AM EDT

Temperature: 66.6 °F Dew Point: 63 °F Humidity: 87% Wind: North at - Pressure: 30.24 in Hourly Precipitation: - Heat Index: - Graphs

Location: West Allentown, Wescosville, PA

Updated: 7:50 AM EDT

Temperature: 68.6 °F Dew Point: 69 °F Humidity: 100% Wind: Calm Pressure: 30.15 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Upper Macungie Twp, Allentown, PA

Updated: 7:39 AM EDT

Temperature: 70.0 °F Dew Point: 70 °F Humidity: 99% Wind: Calm Pressure: 30.05 in Hourly Precipitation: - Heat Index: - Graphs

Location: Windermerre Park, Allentown, PA

Updated: 7:45 AM EDT

Temperature: 69.3 °F Dew Point: 68 °F Humidity: 97% Wind: Calm Pressure: 30.06 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Easton Road, Bethlehem, PA

Updated: 7:50 AM EDT

Temperature: 72.1 °F Dew Point: 68 °F Humidity: 88% Wind: North at - Pressure: 30.01 in Hourly Precipitation: - Heat Index: 70 °F Graphs

Location: Lindy Drive, Schnecksville, PA

Updated: 7:50 AM EDT

Temperature: 70.3 °F Dew Point: 69 °F Humidity: 95% Wind: North at - Pressure: 30.04 in Hourly Precipitation: - Heat Index: - Graphs

Location: Macungie Area Weather, Macungie, PA

Updated: 7:54 AM EDT

Temperature: 70.0 °F Dew Point: 69 °F Humidity: 98% Wind: Calm Pressure: 30.17 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Blue Church Road South, Coopersburg, PA

Updated: 7:50 AM EDT

Temperature: 70.2 °F Dew Point: 66 °F Humidity: 87% Wind: North at - Pressure: 30.24 in Hourly Precipitation: - Heat Index: - Graphs

Location: Air Products Campus Wx, Allentown, PA

Updated: 7:53 AM EDT

Temperature: 68.7 °F Dew Point: 67 °F Humidity: 95% Wind: Calm Pressure: 30.16 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Strawberry Acres, Coplay, PA

Updated: 7:51 AM EDT

Temperature: 68.3 °F Dew Point: 67 °F Humidity: 96% Wind: Calm Pressure: 30.04 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Old Zionsville, Zionsville, PA

Updated: 7:54 AM EDT

Temperature: 68.9 °F Dew Point: 69 °F Humidity: 99% Wind: Calm Pressure: 30.26 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: whispering hollow south, Northampton, PA

Updated: 7:53 AM EDT

Temperature: 69.6 °F Dew Point: 58 °F Humidity: 67% Wind: Calm Pressure: 29.39 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Bethlehem Township, Bethlehem, PA

Updated: 7:53 AM EDT

Temperature: 71.8 °F Dew Point: 70 °F Humidity: 95% Wind: WSW at 2.0 mph Pressure: 30.16 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Beechwood Street, Allentown, PA

Updated: 7:50 AM EDT

Temperature: 69.1 °F Dew Point: 63 °F Humidity: 80% Wind: North at - Pressure: 30.21 in Hourly Precipitation: - Heat Index: - Graphs

Location: Orefield, PA

Updated: 7:50 AM EDT

Temperature: 69.1 °F Dew Point: 69 °F Humidity: 99% Wind: Calm Pressure: 29.92 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Wassergass, Hellertown, PA

Updated: 7:54 AM EDT

Temperature: 70.1 °F Dew Point: 70 °F Humidity: 99% Wind: Calm Pressure: 30.12 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Fogelsville, PA

Updated: 7:53 AM EDT

Temperature: 69.7 °F Dew Point: 67 °F Humidity: 92% Wind: Calm Pressure: 29.91 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Alburtis, Alburtis, PA

Updated: 7:40 AM EDT

Temperature: 70.5 °F Dew Point: 70 °F Humidity: 99% Wind: Calm Pressure: 29.93 in Hourly Precipitation: - Heat Index: - Graphs

Location: Highway 873, Schnecksville, PA

Updated: 7:51 AM EDT

Temperature: 68.9 °F Dew Point: 67 °F Humidity: 95% Wind: North at - Pressure: 30.25 in Hourly Precipitation: - Heat Index: - Graphs

Location: Pointe West, Fogelsville, PA

Updated: 7:54 AM EDT

Temperature: 71.6 °F Dew Point: 62 °F Humidity: 71% Wind: Calm Pressure: 30.10 in Hourly Precipitation: 0.00 in Heat Index: 74 °F Graphs

MSN Maps of:

Temp: Dew Point: Humidity Wind Pressure Hr Precip -

NWS Forecaster Discussion




Area forecast discussion 
National Weather Service Mount Holly New Jersey 
532 am EDT Thursday may 28 2015 


Synopsis... 
a cold front will move across the area today. High pressure 
reestablishes itself off the East Coast Friday into Saturday. A 
cold front is forecast to move across the area Saturday night into 
Sunday. High pressure will return to the northeast early next week 
while the frontal boundary stalls to our south. 


&& 


Near term /until 6 PM this evening/... 
cold front will begin crossing our region today. Interestingly, most 
models agree that the front will be moving through our western 
sections by 18z or shortly thereafter despite large differences in 
the timing of the front for our eastern coastal plains (more on that 
in the short term section). Could be a few showers this morning as 
the right rear quadrant of the upper level jet propagates closer to 
the region. However, the main focus for any storms, and thus highest 
pops, look to be after 18z in the vicinity of the front. One change 
from the previous forecast is that it now looks like the highest 
chances for storms will be in the northern half of the region which 
will be closer to the middle and upper level trough axis. Meanwhile in 
the southern half of our cwa, an upper level ridge looks to build in 
by late this afternoon, and while any associated subsidence may not 
be enough to completely suppress convective initiation in this area, 
it should be a factor in limiting storm coverage. 


As for hazards, there is the potential for gusty winds, primarily 
across northwest New Jersey as 0-6km shear values could be near 40 knots (primarily 
speed shear) with modest (less than 500 j/kg cape) instability. Will 
mention potential for strong storms in this area in the severe weather potential statement. Shear 
values, and thus strong storm threat, drops off quickly as you go 
further south thanks again to the high building in. With this high, 
any storm motions across the southern half of the region should be 
quite slow (15 knots or less), but other contributing factors for a 
heavy rain threat are limited, so will hold off on mentioning any 
heavy rain in the severe weather potential statement. 


&& 


Short term /6 PM this evening through 6 am Friday/... 
as mentioned earlier, there are some big differences among models 
for the timing of the front from Delaware valley and points further 
east. Some models, most notably the NAM, bring the front in quickly 
to the western zones, but then Don/T show the front moving through 
the eastern coastal plains until near or after 06z. This doesn/T 
seem realistic even with the high building in. The low associated 
with this cold front should be quickly propagating east through this 
time, so see little reason that the front will stall. Thus forecast 
favors a faster solution, having the front move off shore around 
06z. Regardless of the frontal timing, loss of daytime heating and 
the ridge building in should lead to chances for storms decreasing 
through the evening hours, and would expect most, if not all of the 
area to be dry by midnight. 


The one area where the timing differences could have considerable 
impact will be with low temperatures overnight. For now have gone 
with a blend of the faster solutions (cmc, GFS, and ecmwf), but with 
drier air moving in behind the front, there is the potential for 
considerable radiational cooling if the front pushes through faster 
than previously expected. 


&& 


Long term /Friday through Wednesday/... 
high pressure is forecast to reestablish itself across the Atlantic 
on Friday, with our area on the western edge, while the ridge aloft 
builds to our east as well. This should help keep the weather mostly 
dry into Friday. However, with return flow across the area, 
instability is forecast to develop across the the area, especially 
for western areas. This daytime instability could lead to a few 
isolated showers/thunderstorms with any vorticity impulse that moves 
across the western edge of the ridge. 


The surface high and ridging aloft push eastward slightly Saturday, 
with southwest flow at the surface aloft developing. This will allow 
for a couple of short wave/vorticity impulses to move across the 
area late Saturday while daytime instability develops as well. An 
increase in shower/thunderstorm activity is possible, especially for 
the western portions of the area. 


A cold front is then forecast to move across the area Saturday night 
into Sunday. The latest GFS and European model (ecmwf) have pretty good agreement 
with the timing of the precipitation. Both agree that Sunday looks 
to be the period with highest probability for precipitation as the 
front moves across and south of the area. Precipitable water values increase to near 
2 inches, so there could be a period of heavy rainfall with any 
showers that develop during the time period. There remains 
instability forecast ahead of the front, so we will keep 
thunderstorms in the forecast, but once the front passes, 
thunderstorm potential decreases. 


High pressure returns to the northeast early next week as the 
frontal boundary pushes south and likely stalls just south of our 
area. With the high to our northeast, this will keep easterly flow 
across the area. Southwest-westerly flow aloft will remain across 
the area as well. Several short wave/vorticity impulses will likely 
move across the area early next week, which could help create 
precipitation across the area. With the easterly flow across the 
area, the atmosphere should be stable, so we have removed 
thunderstorms from the forecast Monday and Tuesday due to lack of 
instability. 


&& 


Aviation /10z Thursday through Monday/... 
the following discussion is for kphl, kpne, kttn, kabe, krdg, kilg, 
kmiv, kacy and surrounding areas. 


Patchy fog/br will likely continue at krdg and kabe through 12z. For 
the Delaware valley and coastal sites (kphl, kpne, kttn, kmiv, kacy 
and kilg), expect brief intermittent impacts (primarily MVFR except 
at kttn) through this time as well. After sunrise, winds should 
settle in out of the SW. There may be isolated rain showers between 12 and 
15z, but coverage will be too limited to mention in the tafs. 


A cold front is expected to approach the region around 18z. Just 
ahead of the front, could see isolated to scattered thunderstorms, 
though higher chances look to stay north of the taf sites, will be 
keeping a close eye on this through the day though. As for the exact 
timing of the front, and thus a shift to northwesterly winds, 
relatively high confidence of it arriving at krdg and kabe by 21z. 
Considerably less confidence for the other taf sites. Have chosen to 
go with a faster solution than what the NAM or GFS lamp are showing 
given a relatively progressive overall pattern, with an arrival in 
the Delaware valley between 00 and 03z, and at the coastal sites by 
06z. 


Outlook... 


Friday...generally VFR. Isolated showers/thunderstorms possible for 
western tafs. 


Friday night...VFR early, then lowering ceilings/visibilities with 
stratus/fog possible overnight. 


Saturday...lower conditions possible early, then becoming VFR during 
the day. Scattered showers and thunderstorms possible which may 
locally reduce cigs/vsbys. Gusty south-southwest winds around 20 
knots. 


Saturday night-Monday...an extended period of MVFR/IFR conditions 
possible. A chance of rain each day. Best potential for 
thunderstorms is Sunday. 


&& 


Marine... 
seas have diminished. Thus, have cancelled the Small Craft Advisory a bit early. 
This afternoon, a few gusts near or just above 20 knots are possible 
on the Atlantic coastal waters, but should remain below Small Craft Advisory 
criteria. However, gusty winds are possible in the vicinity of any 
thunderstorms this afternoon and evening. A wind shift with a 
cold front is expected this evening into the overnight hours. 


Outlook... 


Friday-Friday night...sub-Small Craft Advisory conditions currently 
expected, although winds may gust around 20 knots at times. 


Saturday-Monday...seas may return to 5 feet or greater late on 
Saturday ahead ahead of an approaching cold front. Seas may remain 
elevated into Monday, and winds may increase to 25 knots. 


&& 


Phi watches/warnings/advisories... 
PA...none. 
New Jersey...none. 
Delaware...none. 
Maryland...none. 
Marine...none. 


&& 


$$ 
Synopsis...Robertson 
near term...Johnson 
short term...Johnson 
long term...Robertson 
aviation...Johnson/Robertson 
marine...Johnson/Robertson 






National Weather Service Glossary of Abbreviations

Non-Expanded Version (with abbreviations)

Powered by the Weather Underground, Inc.