Seattle, Washington Weather Conditions

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Current Conditions

  • 68°
  • Light Rain
  • Wind: SE 8 mph
  • Humidity: 78%
  • Visibility: 10.0 miles
  • Dew Point: 61°
  • Pressure: 29.81 in. -

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Next 12 Hours

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Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Tuesday
  • Rain
  • High: 70 °
  • Low: 64 °
  • Rain
  • Wednesday
  • Rain
  • High: 72 °
  • Low: 59 °
  • Rain
  • Thursday
  • Rain Showers
  • High: 72 °
  • Low: 59 °
  • Rain Showers
  • Friday
  • Partly Cloudy
  • High: 68 °
  • Low: 55 °
  • Partly Cloudy
  • Saturday
  • Partly Cloudy
  • High: 70 °
  • Low: 54 °
  • Partly Cloudy

Forecast for Seattle, Washington

Updated: 2:00 PM PDT on September 23, 2014

  • Tuesday

    Overcast with rain showers, then rain in the afternoon. Fog early. High of 70F. Winds less than 5 mph. Chance of rain 90%.

  • Tuesday Night

    Overcast with rain. Low of 64F. Winds from the SSE at 5 to 10 mph. Chance of rain 90% with rainfall amounts near 0.4 in. possible.

  • Wednesday

    Overcast with rain in the morning, then partly cloudy with rain showers. High of 72F. Winds from the SSW at 10 to 15 mph. Chance of rain 90%.

  • Wednesday Night

    Overcast with a chance of rain. Low of 59F. Winds from the SSE at 5 to 15 mph. Chance of rain 50%.

  • Thursday

    Overcast with rain showers. High of 72F. Winds from the SSE at 5 to 10 mph. Chance of rain 60%.

  • Thursday Night

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

  • Friday

    Overcast in the morning, then mostly cloudy. High of 68F. Winds less than 5 mph.

  • Friday Night

    Overcast in the evening, then clear. Low of 55F. Winds less than 5 mph.

  • Saturday

    Overcast in the morning, then mostly cloudy. High of 70F. Winds less than 5 mph.

  • Saturday Night

    Partly cloudy. Low of 54F. Winds less than 5 mph.

  • Sunday

    Partly cloudy. High of 72F. Winds less than 5 mph.

  • Sunday Night

    Partly cloudy with a chance of rain. Low of 59F. Winds from the South at 5 to 10 mph. Chance of rain 40%.

  • Monday

    Overcast with a chance of rain. High of 70F. Winds from the SSW at 5 to 10 mph. Chance of rain 40%.

  • Monday Night

    Clear with a chance of rain. Low of 55F. Winds less than 5 mph. Chance of rain 40%.

  • Tuesday

    Partly cloudy. High of 70F. Winds less than 5 mph.

  • Tuesday Night

    Clear. Low of 46F. Winds less than 5 mph.

  • Wednesday

    Partly cloudy with a chance of rain. High of 68F. Winds less than 5 mph. Chance of rain 20%.

  • Wednesday Night

    Partly cloudy with a chance of rain. Low of 54F. Winds less than 5 mph. Chance of rain 40%.

  • Thursday

    Overcast with a chance of rain. High of 70F. Winds less than 5 mph. Chance of rain 40%.

  • Thursday Night

    Overcast with a chance of rain. Low of 55F. Winds less than 5 mph. Chance of rain 40%.

  • Friday

    Mostly cloudy with a chance of rain. High of 70F. Winds less than 5 mph. Chance of rain 20%.

  • Friday Night

    Mostly cloudy. Low of 57F. Winds less than 5 mph.

  • Saturday

    Clear. High of 70F. Winds less than 5 mph.

Severe Weather Alert Descriptions

 Public Information Statement  Statement as of 2:31 PM PDT on September 23, 2014


For August... precipitation was widely varied across the state but
most areas saw above normal rainfall... especially in eastern
Washington. As for the water year... most of the western half of the
state continues to be near normal for precipitation while the
eastern half continues to be mostly below normal.

In western Washington... the monthly percentage of normal for
precipitation ranged from 55 percent in the Olympics to 150 percent
in the Puget Sound lowlands. The greatest amount of precipitation at
the climate stations for the mountains... coast... and interior
lowlands are 4.32 inches at Cedar Lake on the west slopes of the
Cascades... 1.99 inches at Hoquiam and Aberdeen... and 2.09 inches at
Grays River in the southwest interior.

For eastern Washington... the percentage of normal for precipitation
ranged from 71 percent in the Palouse and Blue Mountains to 275
percent in the Central Basin. The greatest amount of precipitation
at climate stations for the mountains and lowlands was 1.76 inches
in Mazama and Stehekin on the eastern slopes of the Cascades... and
2.22 inches at Bickleton in the Central Basin.

The outlook for September and beyond... for the next two weeks the
outlook is for below normal precipitation for all of Washington. The
monthly outlook for September is calling for below normal
precipitation for western WA and equal chances of
normal... above... or below normal precipitation for eastern WA. The
three month outlook from September to November calls for below
normal precipitation for the entire state.

The Table below gives precipitation figures as a percent of normal
for regions of Washington. The current water year began 1 October
2013 and ends 30 September 2014.

                        August water year past 3 past 12
                         2014 to date months months
western Washington
coast 69 81 56 88
Olympics 55 75 53 83
northwest interior 67 102 79 109
Puget Sound lowlands 150 90 93 101
southwest interior 91 85 83 97
west foothills casca 137 103 107 112
Cascades west 146 100 115 109

Eastern Washington
east slopes Cascades 245 90 114 103
Okanogan 244 87 118 95
Central Basin 275 72 108 79
northeast 192 83 114 94
Palouse and blue mtn 71 83 88 92



The Table below expresses precipitation in inches and as a percent of
normal for a variety of locations around the state. Occasionally
missing data at a site are estimated using observed data from
surrounding stations.

                  August water year past 12 months
               inches pct inches pct inches pct

Quillayute 0.69 28 73.08 76 82.67 86
Hoquiam 1.99 152 55.76 85 63.29 96
Bellingham 0.84 66 30.55 91 35.20 103
Seattle 1.81 206 36.88 102 43.05 118
Olympia 1.45 154 41.25 85 50.61 105
longview* 1.30 113 40.20 88 49.08 105

Concrete 2.08 122 69.35 103 78.43 115
Snoqualmie fall 1.88 146 59.53 101 66.82 111
randle* 1.84 152 55.88 103 64.03 115
Diablo dam 0.88 53 71.39 96 82.21 112
Stampede Pass 4.20 273 84.85 110 93.55 118
Paradise 3.18 161 117.82 104 132.21 114

Winthrop 1.34 248 11.55 81 13.98 102
Stehekin 1.76 284 32.95 94 38.51 114
Leavenworth 1.04 226 17.78 73 21.54 89
Mount Adams 0.98 151 45.16 101 52.42 117
Wenatchee 0.83 437 4.52 51 5.33 80
Yakima 0.90 346 4.79 61 5.09 64

Coulee Dam 1.76 629 10.39 100 11.04 113
Lind 0.61 197 6.73 72 7.33 86
Republic 1.35 167 13.72 85 17.22 109
Spokane 0.58 98 12.33 78 13.89 88
Pullman 0.50 28 14.78 79 17.44 88
Dayton 0.23 46 12.50 68 15.10 81

* = estimated



Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: Herrera, Inc., Seattle, WA

Updated: 5:24 PM PDT

Temperature: 65.8 °F Dew Point: 60 °F Humidity: 83% Wind: SSE at 5.0 mph Pressure: 29.81 in Hourly Precipitation: 0.00 in Graphs

Location: UW Integrated Design Lab, Bullitt Center, Seattle, WA

Updated: 5:24 PM PDT

Temperature: 64.5 °F Dew Point: 62 °F Humidity: 90% Wind: South at 3.0 mph Pressure: 29.81 in Hourly Precipitation: 0.00 in Graphs

Location: Capitol Hill, Seattle, WA

Updated: 5:13 PM PDT

Temperature: 65.0 °F Dew Point: 62 °F Humidity: 89% Wind: SE at 6.0 mph Pressure: 29.77 in Hourly Precipitation: 0.00 in Graphs

Location: Queen Anne Southern Exposure, Seattle, WA

Updated: 5:20 PM PDT

Temperature: 65.7 °F Dew Point: 57 °F Humidity: 74% Wind: SE at 3.0 mph Pressure: 29.53 in Hourly Precipitation: 0.00 in Graphs

Location: Queen Anne, Seattle, WA

Updated: 5:24 PM PDT

Temperature: 64.9 °F Dew Point: 65 °F Humidity: 99% Wind: Calm Pressure: 29.50 in Hourly Precipitation: 0.00 in Graphs

Location: Eastlake on Lake Union, Seattle, WA

Updated: 5:23 PM PDT

Temperature: 67.5 °F Dew Point: 64 °F Humidity: 87% Wind: ESE at 1.7 mph Pressure: 29.48 in Hourly Precipitation: - Graphs

Location: Queen Anne - Toddster weather, Seattle, WA

Updated: 5:24 PM PDT

Temperature: 64.9 °F Dew Point: 59 °F Humidity: 82% Wind: SSW at 1.0 mph Pressure: 29.79 in Hourly Precipitation: 0.00 in Graphs

Location: Fremont Troll, Seattle, WA

Updated: 5:20 PM PDT

Temperature: 66.6 °F Dew Point: 62 °F Humidity: 85% Wind: Calm Pressure: 29.89 in Hourly Precipitation: 0.00 in Graphs

Location: MesoWest UNIVERSITY OF WASHINGTON WA US WAAQ, Seattle, WA

Updated: 3:55 PM PDT

Temperature: 66 °F Dew Point: 61 °F Humidity: 83% Wind: SE at 1 mph Pressure: - Hourly Precipitation: 0.00 in Graphs

Location: West Seattle (Two Dogs Observatory), Seattle, WA

Updated: 5:23 PM PDT

Temperature: 64.6 °F Dew Point: 61 °F Humidity: 87% Wind: Calm Pressure: 29.80 in Hourly Precipitation: - Graphs

Location: University District, Seattle, WA

Updated: 5:20 PM PDT

Temperature: 65.6 °F Dew Point: 62 °F Humidity: 88% Wind: ESE at 1.0 mph Pressure: 29.75 in Hourly Precipitation: 0.01 in Graphs

Location: Fremont, Seattle, WA

Updated: 5:22 PM PDT

Temperature: 66.0 °F Dew Point: 60 °F Humidity: 82% Wind: ESE at 4.0 mph Pressure: 29.73 in Hourly Precipitation: 0.00 in Graphs

Location: Queen Anne - Western Exposure, Seattle, WA

Updated: 5:20 PM PDT

Temperature: 64.5 °F Dew Point: 61 °F Humidity: 88% Wind: Calm Pressure: 29.75 in Hourly Precipitation: 0.00 in Graphs

Location: Alki, Seattle, WA

Updated: 5:23 PM PDT

Temperature: 65.1 °F Dew Point: 62 °F Humidity: 89% Wind: Calm Pressure: 29.80 in Hourly Precipitation: 0.01 in Graphs

Location: North Delridge, Seattle, WA

Updated: 5:23 PM PDT

Temperature: 66.2 °F Dew Point: 60 °F Humidity: 82% Wind: South at 2.7 mph Pressure: 29.50 in Hourly Precipitation: - Graphs

Location: Phinney Ridge, Seattle, WA

Updated: 5:24 PM PDT

Temperature: 65.1 °F Dew Point: 60 °F Humidity: 85% Wind: SE at 2.0 mph Pressure: 29.82 in Hourly Precipitation: 0.00 in Graphs

Location: Magnolia - MaxHome, Seattle, WA

Updated: 5:24 PM PDT

Temperature: 63.8 °F Dew Point: 61 °F Humidity: 91% Wind: Calm Pressure: 29.77 in Hourly Precipitation: 0.00 in Graphs

Location: Tangletown, Seattle, WA

Updated: 5:24 PM PDT

Temperature: 66.7 °F Dew Point: 61 °F Humidity: 83% Wind: South at 3.1 mph Pressure: 29.80 in Hourly Precipitation: 0.00 in Graphs

Location: Ballard - West Woodland, Seattle, WA

Updated: 5:24 PM PDT

Temperature: 66.4 °F Dew Point: 62 °F Humidity: 85% Wind: SE at 4.0 mph Pressure: 29.80 in Hourly Precipitation: 0.01 in Graphs

Location: Genesee Hill, West Seattle, Seattle, WA

Updated: 5:24 PM PDT

Temperature: 63.0 °F Dew Point: 61 °F Humidity: 92% Wind: Calm Pressure: 29.70 in Hourly Precipitation: 0.07 in Graphs

Location: Roosevelt - Tomster, Seattle, WA

Updated: 5:24 PM PDT

Temperature: 65.0 °F Dew Point: 61 °F Humidity: 87% Wind: WNW at 6.0 mph Pressure: 29.75 in Hourly Precipitation: 0.00 in Graphs

Location: Greenlake East, Seattle, WA

Updated: 5:11 PM PDT

Temperature: 65.2 °F Dew Point: 62 °F Humidity: 88% Wind: Calm Pressure: 29.77 in Hourly Precipitation: 0.00 in Graphs

Location: Phinney Ridge, Seattle, WA

Updated: 5:24 PM PDT

Temperature: 65.4 °F Dew Point: 61 °F Humidity: 85% Wind: Calm Pressure: 29.78 in Hourly Precipitation: 0.00 in Graphs

Location: Ballard, Seattle, WA

Updated: 5:24 PM PDT

Temperature: 67.3 °F Dew Point: 50 °F Humidity: 54% Wind: ESE at 2.7 mph Pressure: 29.65 in Hourly Precipitation: 0.00 in Graphs

MSN Maps of:

Temp: Dew Point: Humidity Wind Pressure Hr Precip -

NWS Forecaster Discussion




Area forecast discussion 
National Weather Service Seattle Washington 
300 PM PDT Tuesday Sep 23 2014 


Synopsis...a cold front will spread rain inland this evening with 
the front crossing the western Washington interior Wednesday 
morning. Moist southwest flow aloft will maintain mostly cloudy 
skies and a chance of showers Wednesday night and Thursday. A large 
upper level trough will move over the region on Saturday for a 
chance of showers. Moist westerly flow aloft will keep the pattern 
unsettled early next week. 


&& 


Short term...the dominant weather feature this week will be the 
large vertically stacked upper level/surface low currently centered 
near 46n/139w at 21z/2 PM. 


The main rain event will be tonight through Wednesday morning as a 
cold front moves across the area. Models are in fairly good 
agreement with the timing. Rain will become more steady on the coast 
early this evening then spread over the interior later this evening. 
Frontal passage on the coast will occur after midnight and over Puget Sound sound 
Wednesday morning. Rainfall accumulation through 11 am Wednesday 
should be healthy with 1-2 inches on the coast and roughly 0.50-1.00 
inches over the interior. Wind should not be a big deal this time as 
pressure gradients are too easterly. 


The main offshore low will have drifted NE to around 49n/135w by 
18z/11 am Wednesday and it will remain around that area through 
Thursday. This will keep West Washington under generally moist SW flow aloft. 
Weak embedded shortwave troughs will probably generate periods of 
showers Wednesday afternoon through Thursday. Chance probability of precipitation will work 
out best for this period. Maximum temperatures will remain close to normal with 
highs in the 60s to near 70. 


Models all weaken the large upper level trough on Friday and shift 
it east towards the pacnw coast. While the models agree on the 
evolution of the trough there is more discord about precipitation coverage 
and amount. The GFS leans towards dry over The Lowlands while the 
European model (ecmwf) and NAM show a bit more rain over the area. I will keep the 
chance of showers for now. Kam 


Long term...as the large upper level trough along the Pacific coast 
on Friday moves inland...the GFS/European model (ecmwf) show a cut-off upper level 
low forming in the southern part of the trough on Saturday. The 
European model (ecmwf) places the low center over Oregon with some light rain pretty 
close to West Washington. The GFS keeps the low center down over north California with dry 
conditions over West Washington. Cut-off upper level lows are capricious and 
the models have not been all that consistent...so even though 
Saturday is looking like a dry day I will hang on to a 20 percent 
chance of showers for now. 


The European model (ecmwf) is faster than the GFS in moving the upper level low 
eastward on Sunday...allowing moist westerly flow aloft upstream to 
spread inland over West Washington. The European model (ecmwf) has precipitation from an upper level 
trough embedded the flow reaching West Washington Sunday afternoon while the 
GFS brings a weak cold front inland Sunday night. Unsettled weather 
continues Monday and Tuesday in both models. Kam 


&& 


Aviation...a large upper trough and deep surface low will meander 
along 130 west through Thursday. The associated surface front will reach the 
coast this evening the very slowly move across interior western Washington 
overnight into Wednesday morning. Upper level low pressure will move 
closer on Wednesday as the front moves east of the Cascades. Strong SW flow 
aloft through Wednesday. Moist at all levels and weakly unstable 
aloft...but lightning is not expected. Showers will transition to 
steady rain this evening...heavy at times. Ceilings are highly variable 
this evening but MVFR ceilings will become widespread as rain arrives 
with the front overnight. Ceilings improving to VFR and scattering by 
18z Wednesday. 


Ksea...rain and lowering ceilings are slow to develop but the strongest 
portion of the frontal system will arrive this evening and 
overnight. VFR ceilings with showers will transition to solid rain with 
mainly MVFR ceilings after 03z this evening. Rain tapering to showers 
with improving ceilings by 18z Wednesday. 


&& 


Marine...strong southeast pressure gradients will be caused by a deep 973 
mb low near 135 west. Gale force winds are expected in the coastal 
waters through tonight and the warning remains in effect. Southeast flow 
also picks up ahead of the front with small craft winds developing 
from the East Entrance to the Strait of Juan Delaware fuca to the northern inland 
waters. The West Entrance will also have small craft winds at times. 
Winds will ease across the waters Wednesday morning as the low begins to 
fill and the front moves east. Lighter flow is expected the end of the 
week into the weekend. 


The large 973 mb surface low stalled near 135 west will send a large 
swell train onto the Washington coast. Early season criteria for a high 
surface advisory is 15 feet...but swell will probably be just short of 
that when reaching the coast. Decided against a high surf but sea 
state will need to be monitored. Regardless...it will be hazardous 
along the beach as waves well over 10 feet will develop. Mercer 


&& 


Sew watches/warnings/advisories... 
Washington...none. 
Pz...Gale Warning coastal waters tonight. 
Small Craft Advisory entrances to the Strait and northern 
inland waters this afternoon through tonight. 
Small Craft Advisory for rough bar conditions Wednesday. 


&& 


$$ 


Www.Weather.Gov/Seattle 


You can see an illustrated version of this forecast discussion at 
www.Weather.Gov/Seattle/gafd/latest_webafd.Html 



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