Allentown, Pennsylvania Weather Conditions

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Current Conditions

  • 75°
  • Clear
  • Wind: NW 9 mph
  • Humidity: 44%
  • Visibility: 10.0 miles
  • Dew Point: 52°
  • Pressure: 29.90 in. +

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Next 12 Hours

8  pm
11  pm
2  am
5  am
8  am
Partly Cloudy
Partly Cloudy
Clear
Clear
Clear
Clear
Clear
Clear
Clear
Clear
75°
70°
61°
59°
64°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Thursday
  • Partly Cloudy
  • High: 81 °
  • Low: 59 °
  • Partly Cloudy
  • Friday
  • Clear
  • High: 81 °
  • Low: 61 °
  • Clear
  • Saturday
  • Chance of a Thunderstorm
  • High: 84 °
  • Low: 68 °
  • Chance of a Thunderstorm
  • Sunday
  • Mostly Cloudy
  • High: 84 °
  • Low: 68 °
  • Mostly Cloudy
  • Monday
  • Chance of a Thunderstorm
  • High: 82 °
  • Low: 63 °
  • Chance of a Thunderstorm

Forecast for Allentown, Pennsylvania

Updated: 5:00 PM EDT on July 24, 2014

  • Thursday

    Partly cloudy with a chance of rain. High of 81F. Winds from the NNW at 5 to 10 mph.

  • Thursday Night

    Partly cloudy in the evening, then clear. Low of 59F. Winds less than 5 mph.

  • Friday

    Clear. High of 81F. Winds less than 5 mph.

  • Friday Night

    Clear. Low of 61F. Winds less than 5 mph.

  • Saturday

    Partly cloudy with a chance of a thunderstorm and a chance of rain in the afternoon. High of 84F. Winds from the SW at 5 to 10 mph. Chance of rain 20%.

  • Saturday Night

    Partly cloudy with a chance of a thunderstorm and rain. Low of 68F. Winds from the SW at 5 to 10 mph. Chance of rain 40%.

  • Sunday

    Mostly cloudy in the morning, then overcast. High of 84F. Winds from the West at 10 to 15 mph.

  • Sunday Night

    Mostly cloudy with a chance of a thunderstorm and rain. Low of 68F. Winds from the SW at 5 to 10 mph. Chance of rain 60% with rainfall amounts near 0.4 in. possible.

  • Monday

    Partly cloudy with a chance of a thunderstorm and rain in the afternoon. High of 82F. Winds from the WSW at 10 to 15 mph. Chance of rain 20%.

  • Monday Night

    Clear with a chance of a thunderstorm. Low of 63F. Winds from the NW at 10 to 15 mph. Chance of rain 30%.

  • Tuesday

    Partly cloudy. High of 77F. Winds from the NW at 10 to 15 mph.

  • Tuesday Night

    Clear. Low of 59F. Winds less than 5 mph.

  • Wednesday

    Clear. High of 79F. Winds from the WNW at 5 to 10 mph.

  • Wednesday Night

    Clear. Low of 61F. Winds less than 5 mph.

  • Thursday

    Partly cloudy. High of 77F. Winds less than 5 mph.

  • Thursday Night

    Partly cloudy. Low of 59F. Winds less than 5 mph.

  • Friday

    Partly cloudy. High of 79F. Winds less than 5 mph.

  • Friday Night

    Partly cloudy. Low of 59F. Winds less than 5 mph.

  • Saturday

    Clear. High of 77F. Winds less than 5 mph.

  • Saturday Night

    Clear. Low of 61F. Winds less than 5 mph.

  • Sunday

    Partly cloudy. High of 79F. Winds less than 5 mph.

  • Sunday Night

    Clear. Low of 63F. Winds less than 5 mph.

  • Monday

    Clear. High of 81F. Winds less than 5 mph.

  • Monday Night

    Clear. Low of 63F. Winds less than 5 mph.

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: South Filmore Street, Allentown, PA

Updated: 6:49 PM EDT

Temperature: 77.9 °F Dew Point: 58 °F Humidity: 50% Wind: West at 4.7 mph Pressure: 29.82 in Hourly Precipitation: - Heat Index: 79 °F Graphs

Location: South Allentown, Allentown, PA

Updated: 7:00 PM EDT

Temperature: 76.5 °F Dew Point: 56 °F Humidity: 49% Wind: Calm Pressure: 29.79 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: Park Ridge, Allentown, PA

Updated: 7:00 PM EDT

Temperature: 77.0 °F Dew Point: 55 °F Humidity: 46% Wind: Calm Pressure: 29.76 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: Whitehall, Whitehall, PA

Updated: 7:00 PM EDT

Temperature: 76.2 °F Dew Point: 56 °F Humidity: 49% Wind: NNW at 4.0 mph Pressure: 29.48 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: Hokendauqua, Whitehall, PA

Updated: 7:00 PM EDT

Temperature: 76.0 °F Dew Point: 58 °F Humidity: 54% Wind: NNW at 2.0 mph Pressure: 29.86 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

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

Updated: 7:00 PM EDT

Temperature: 76.8 °F Dew Point: 55 °F Humidity: 47% Wind: East at 5.4 mph Pressure: 29.89 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: Lower Saucon Township, Bethlehem, PA

Updated: 7:00 PM EDT

Temperature: 75.7 °F Dew Point: 56 °F Humidity: 51% Wind: Calm Pressure: 29.94 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: West Bethlehem, Bethlehem, PA

Updated: 7:00 PM EDT

Temperature: 78.1 °F Dew Point: 56 °F Humidity: 47% Wind: West at 2.2 mph Pressure: 29.79 in Hourly Precipitation: 0.00 in Heat Index: 79 °F Graphs

Location: South Mountain, Bethlehem, PA

Updated: 6:58 PM EDT

Temperature: 75.4 °F Dew Point: 58 °F Humidity: 55% Wind: NNE at 1.1 mph Pressure: 29.84 in Hourly Precipitation: - Heat Index: 78 °F Graphs

Location: Werner Ent. Allentown, Allentown, PA

Updated: 7:00 PM EDT

Temperature: 74.9 °F Dew Point: 56 °F Humidity: 52% Wind: North at 8.0 mph Pressure: 29.85 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: upper saucon township, Coopersburg, PA

Updated: 7:00 PM EDT

Temperature: 72.7 °F Dew Point: 58 °F Humidity: 60% Wind: Calm Pressure: 29.85 in Hourly Precipitation: 0.00 in Heat Index: 76 °F Graphs

Location: West Allentown, Wescosville, PA

Updated: 7:00 PM EDT

Temperature: 75.5 °F Dew Point: 58 °F Humidity: 55% Wind: NNE at 1.0 mph Pressure: 29.88 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: Upper Macungie Twp, Allentown, PA

Updated: 6:48 PM EDT

Temperature: 76.5 °F Dew Point: 58 °F Humidity: 53% Wind: NNW at 8.9 mph Pressure: 29.90 in Hourly Precipitation: - Heat Index: 78 °F Graphs

Location: Windermerre Park, Allentown, PA

Updated: 7:00 PM EDT

Temperature: 74.7 °F Dew Point: 55 °F Humidity: 51% Wind: Calm Pressure: 29.80 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: Macungie Area Weather, Macungie, PA

Updated: 7:00 PM EDT

Temperature: 75.8 °F Dew Point: 55 °F Humidity: 49% Wind: NNE at 4.8 mph Pressure: 29.91 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: Air Products Campus Wx, Allentown, PA

Updated: 7:00 PM EDT

Temperature: 75.1 °F Dew Point: 55 °F Humidity: 50% Wind: NW at 8.5 mph Pressure: 29.89 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: Strawberry Acres, Coplay, PA

Updated: 6:59 PM EDT

Temperature: 75.1 °F Dew Point: 56 °F Humidity: 52% Wind: WNW at 3.0 mph Pressure: 29.77 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: Orchard View, Hellertown, PA

Updated: 7:00 PM EDT

Temperature: 78.1 °F Dew Point: 59 °F Humidity: 52% Wind: North at 3.6 mph Pressure: 28.91 in Hourly Precipitation: 0.00 in Heat Index: 79 °F Graphs

Location: Orefield, PA

Updated: 7:00 PM EDT

Temperature: 72.9 °F Dew Point: 57 °F Humidity: 58% Wind: Calm Pressure: 29.67 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: Pointe West, Fogelsville, PA

Updated: 7:00 PM EDT

Temperature: 73.6 °F Dew Point: 62 °F Humidity: 68% Wind: Calm Pressure: 29.85 in Hourly Precipitation: 0.00 in Heat Index: 76 °F Graphs

Location: Breinigsville / Lower Macungie, Mertztown, PA

Updated: 7:00 PM EDT

Temperature: 74.9 °F Dew Point: 55 °F Humidity: 50% Wind: Calm Pressure: 29.85 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: Kefallonia Drive, Hellertown, PA

Updated: 6:59 PM EDT

Temperature: 77.0 °F Dew Point: 58 °F Humidity: 53% Wind: South at 1.7 mph Pressure: 29.79 in Hourly Precipitation: - Heat Index: 79 °F Graphs

Location: Washington Township, N3DL, Slatington, PA

Updated: 7:00 PM EDT

Temperature: 69.1 °F Dew Point: 59 °F Humidity: 71% Wind: Calm Pressure: 29.94 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Eagles Landing, Nazareth, PA

Updated: 7:00 PM EDT

Temperature: 72.4 °F Dew Point: 49 °F Humidity: 43% Wind: SE at 4.3 mph Pressure: 29.53 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: Saratoga Chase, Breinigsville, PA

Updated: 6:54 PM EDT

Temperature: 73.6 °F Dew Point: 56 °F Humidity: 54% Wind: North at 2.0 mph Pressure: 29.87 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: Bath, PA

Updated: 7:00 PM EDT

Temperature: 73.2 °F Dew Point: 58 °F Humidity: 59% Wind: North at 6.0 mph Pressure: 29.82 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: Harlem, Barto, PA

Updated: 6:55 PM EDT

Temperature: 70.1 °F Dew Point: 61 °F Humidity: 73% Wind: Calm Pressure: 29.88 in Hourly Precipitation: 0.00 in Heat Index: 73 °F Graphs

Location: Mertztown, Mertztown, PA

Updated: 6:54 PM EDT

Temperature: 75.3 °F Dew Point: 57 °F Humidity: 53% Wind: North at 1.0 mph Pressure: 29.91 in Hourly Precipitation: 0.00 in Heat Index: 78 °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 
355 PM EDT Thursday Jul 24 2014 


Synopsis... 
surface high pressure will continue to move into the region through 
tomorrow before moving offshore on Saturday. A warm front crosses 
the region late on Saturday while the parent low pressure system 
moves through the Great Lakes. The attendant cold front swings 
through late on Sunday into Monday followed by another high pressure 
system. 


&& 


Near term /until 6 am Friday morning/... 
the GFS initialization looked slightly better than the WRF-nmmb 
at most levels, but the op run looks a bit on the warm side vs the 
gefs and op WRF-nmmb. Through the short term, we will Iron the 
differences. 


The 500mb trough axis has still to move entirely through our County Warning Area. 
Precipitation along the WV/Virginia border will come close to our southern County Warning Area and we 
maintained a low chance of showers there into early this evening. 


Otherwise the batch of cold air advection cumulus (odd to type that in july) dont look 
widespread or destined to get trapped underneath the developing 
subsidence inversion. Once the cirrus from the convection move 
through, the second half of the night should be clearer. Dont see 
how the WRF-nmmb hanging on solution will come to fruition, 
especially geographically where the model has it (the less likely 
coast). 


Another dry air mass with pleasant sleeping conditions. Maybe 
someone will have to close the windows in our far northwestern County Warning Area because 
its too cool outside? Min temperatures are a NAM/GFS MOS blend. Record low 
temperatures appear safe with ridge (52 in 1903) and Abe (51 in 1963) the 
most likely climate sites to come close. 


&& 


Short term /6 am Friday morning through 6 PM Friday/... 
with the trough axis through and a more zonal flow aloft, not 
expecting too many fair weather cumulus clouds or any other clouds 
on Friday. The surface high will be near/over our County Warning Area. With less of 
an offshore flow and higher temps, sea and Bay breeze fronts should 
form faster. Maximum temperatures are about 10-11c above the model blend 
combined 925mb predicted temperatures. This is close again to a NAM and GFS 
MOS blend. 


&& 


Long term /Friday night through Thursday/... 
overall the medium range guidance shows a good consensus with the 
middle-level features through early next work week. The trough currently 
across the East Coast flattens with time before a very strong 
shortwave dives out of the upper mid-west. This wave will carve out 
a much deeper trough by the end of the of the weekend across the 
eastern U.S. Beyond Tuesday guidance begins to separate with respect 
to the timing of the trough retrograding. 


Saturday...over the past several days the guidance has become 
murkier and murkier with the possibility of showers during the 
afternoon/evening hours. Today is no different though it should be 
noted that a majority of the operational suites really pump up 
surface dewpoints, some into the low-70s. The flow aloft looks 
slightly less zonal than the past couple of runs, with an embedded 
weak shortwave, across the board and the ensemble guidance keeps the 
noise directly overhead our region...less confidence. One would 
think that it would take a bit longer than 24 hours to completely 
modify the airmass from the 50s to the 70s and with warming 
temperatures we should have a better cap in place, plus better 
mixing. All that being said, we keep the slight chance probability of precipitation in place 
with daytime highs reaching into the upper-80s. 


Sunday - Monday...stronger piece of middle-level energy dives out of the 
Upper Middle-west early Sunday morning and begins to carve a more 
defined trough across the eastern U.S. Multiple waves embedded 
within the mean southwesterly flow aloft swing through, timing of 
the waves is still uncertain but getting better, touching off 
showers and thunderstorms...very unsettled pattern expected. Periods 
of heavy rain is possible with upper level jet dynamics aiding in 
large scale ascent and the approach of surface cold front late 
Sunday night, tied to a surface low pressure in southern Quebec. No 
matter how you Dice it, unsettled weather prevails. Temperatures 
should end up being at or slightly above normal. 


Tuesday - Thursday...drying trend should continue across a majority of the 
region, but with the middle-level trough/cold pool aloft, and the 
slightest hint of instability around, isolated showers are possible 
on Tuesday...better further north. The chances for showers decreases 
each afternoon thereafter. Temperatures should end up being below 
normal for late July standards. 


&& 


Aviation /20z Thursday through Tuesday/... 
the following discussion is for kphl, kpne, kttn, kabe, krdg, kilg, 
kmiv, kacy and surrounding areas. 


18z tafs have VFR conditions forecast throughout. Lowest confidence at kacy. 


For the rest of this afternoon, northwest terminals/airports might develop 
a VFR cumulus based ceiling. Elsewhere multiple layer VFR clouds predicted to 
persist. Not confident at kacy if ceiling will remain completely VFR, 
especially after sea breeze front passes. There will be some MVFR 
ceilings at airports closer to the coast. 


Winds will be north to northwest close to 10 knots. At kacy a sea 
breeze front is predicted to pass late this afternoon. The sea 
breeze front should get to about central New Jersey (roughly the 
western borders of all of the coastal counties and east of 70 in 
burlington) before stalling. 


Tonight VFR conditions are predicted to persist with cloudiness 
slowly dissipating. The taf cloud forecast is weighed more toward 
evening conditions. Winds should be lighter from the northwest. We 
are not anticipating any fog at the terminals. 


On Friday a VFR day with no ceiling predicted and just few/scattered cumulus 
based clouds. A sea breeze front should form again and with 
higher temperatures faster, make its way to kacy by 18z. Not confident 
about it reaching to kphl late that afternoon, so not included in 
this taf. 


Outlook... 
Saturday...mainly VFR. Isolated showers possible 
west...confidence is low on showers. Gusty southwest winds 
possible. 


Sunday - Monday...sub-VFR conditions expected in areas of showers and 
thunderstorms. 


Tuesday...VFR. 


&& 


Marine... 
no marine headlines through the short term. The flow behind a weak 
sea breeze front is going to cause some variable wind directions 
into this evening before the north to northwest flow resumes. A more 
pronounced sea and Bay breeze are expected to form on Friday 
afternoon with a slightly stronger onshore and up the Delaware Bay 
wind occurring. 


Outlook... 
Saturday...high pressure overhead will keep seas and winds below Small Craft Advisory 
criteria. 


Sunday...sub-sca expected with scattered showers and thunderstorms. 


Monday...seas may build to Small Craft Advisory levels under a strengthening 
southwest surface flow. 


Tuesday...sub-sca conditions expected. 




&& 


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


&& 


$$ 
Synopsis...Heavener 
near term...Gaines/gigi 
short term...gigi 
long term...Heavener 
aviation...gigi/Heavener 
marine...gigi/Heavener 












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