Des Moines, Washington Weather Conditions

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Current Conditions

  • 61°
  • Clear
  • Wind: NNE 9 mph
  • Humidity: 78%
  • Visibility: 10.0 miles
  • Dew Point: 54°
  • Pressure: 30.12 in. 0

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Click a section below for more information.

Next 12 Hours

5  am
8  am
11  am
2  pm
5  pm
Fog
Fog
Fog
Fog
Clear
Clear
Clear
Clear
Clear
Clear
57°
59°
66°
75°
75°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Saturday
  • Fog
  • High: 75 °
  • Low: 55 °
  • Fog
  • Sunday
  • Clear
  • High: 82 °
  • Low: 57 °
  • Clear
  • Monday
  • Chance of Rain
  • High: 73 °
  • Low: 57 °
  • Chance of Rain
  • Tuesday
  • Mostly Cloudy
  • High: 73 °
  • Low: 57 °
  • Mostly Cloudy
  • Wednesday
  • Chance of Rain
  • High: 72 °
  • Low: 57 °
  • Chance of Rain

Forecast for Des Moines, Washington

Updated: 2:00 AM PDT on September 20, 2014

  • Saturday

    Partly cloudy. Fog early. High of 75F. Winds from the North at 10 to 15 mph.

  • Saturday Night

    Clear. Low of 55F. Winds from the North at 5 to 15 mph shifting to the WNW after midnight.

  • Sunday

    Clear. High of 82F. Winds from the SSW at 5 to 15 mph.

  • Sunday Night

    Partly cloudy. Low of 57F. Winds from the SSW at 5 to 15 mph.

  • Monday

    Overcast with a chance of rain in the afternoon. High of 73F. Winds from the SSW at 5 to 10 mph. Chance of rain 20%.

  • Monday Night

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

  • Tuesday

    Mostly cloudy in the morning, then overcast. High of 73F. Winds less than 5 mph.

  • Tuesday Night

    Overcast. Low of 57F. Winds less than 5 mph.

  • Wednesday

    Overcast with a chance of rain. High of 72F. Winds less than 5 mph. Chance of rain 50%.

  • Wednesday Night

    Overcast. Low of 57F. Winds less than 5 mph.

  • Thursday

    Overcast. High of 64F. Winds from the SSW at 5 to 10 mph.

  • Thursday Night

    Partly cloudy. Low of 55F. Winds less than 5 mph.

  • Friday

    Overcast with a chance of rain. High of 64F. Winds from the South at 5 to 10 mph. Chance of rain 50%.

  • Friday Night

    Partly cloudy with a chance of rain. Low of 52F. Winds less than 5 mph. Chance of rain 50%.

  • Saturday

    Mostly cloudy with a chance of rain. Fog early. High of 63F. Winds less than 5 mph. Chance of rain 40%.

  • Saturday Night

    Partly cloudy. Low of 50F. Winds less than 5 mph.

  • Sunday

    Partly cloudy. High of 63F. Winds less than 5 mph.

  • Sunday Night

    Partly cloudy. Low of 48F. Winds less than 5 mph.

  • Monday

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

  • Monday Night

    Clear. Low of 45F. Winds less than 5 mph.

  • Tuesday

    Partly cloudy. High of 64F. Winds less than 5 mph.

  • Tuesday Night

    Clear. Fog overnight. Low of 45F. Winds less than 5 mph.

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: Riverview, Kent, WA

Updated: 4:47 AM PDT

Temperature: 58.8 °F Dew Point: 57 °F Humidity: 94% Wind: Calm Pressure: 29.94 in Hourly Precipitation: - Graphs

Location: Des Moines, Seattle, WA

Updated: 4:56 AM PDT

Temperature: 58.5 °F Dew Point: 56 °F Humidity: 92% Wind: North at 1.0 mph Pressure: 29.92 in Hourly Precipitation: 0.00 in Graphs

Location: South Burien, Burien, WA

Updated: 4:56 AM PDT

Temperature: 59.4 °F Dew Point: 57 °F Humidity: 93% Wind: North at 1.6 mph Pressure: 29.73 in Hourly Precipitation: 0.00 in Graphs

Location: Normandy Park, Normandy Park, WA

Updated: 4:55 AM PDT

Temperature: 58.6 °F Dew Point: 55 °F Humidity: 89% Wind: North at 3.0 mph Pressure: 30.06 in Hourly Precipitation: 0.00 in Graphs

Location: Woodmont, Des Moines, WA

Updated: 4:56 AM PDT

Temperature: 57.5 °F Dew Point: 56 °F Humidity: 93% Wind: Calm Pressure: 30.08 in Hourly Precipitation: 0.00 in Graphs

Location: Redondo, Des Moines, WA

Updated: 4:44 AM PDT

Temperature: 57.7 °F Dew Point: 56 °F Humidity: 95% Wind: North at 2.0 mph Pressure: 30.08 in Hourly Precipitation: 0.00 in Graphs

Location: McMicken Heights, SeaTac, WA

Updated: 3:58 AM PDT

Temperature: 59.2 °F Dew Point: 57 °F Humidity: 91% Wind: North at 2.0 mph Pressure: 30.09 in Hourly Precipitation: 0.00 in Graphs

Location: MesoWest KENT JAMES ST AND CENTRAL AVENUE WA US WAAQ, Kent, WA

Updated: 4:00 AM PDT

Temperature: 62 °F Dew Point: - Humidity: - Wind: North at 2 mph Pressure: - Hourly Precipitation: 0.00 in Graphs

Location: Laurelwood North, Federal Way, WA

Updated: 4:56 AM PDT

Temperature: 58.5 °F Dew Point: 53 °F Humidity: 83% Wind: Calm Pressure: 30.13 in Hourly Precipitation: 0.00 in Graphs

Location: Lower Scenic Hill, Kent, WA

Updated: 4:56 AM PDT

Temperature: 60.8 °F Dew Point: 55 °F Humidity: 81% Wind: Calm Pressure: 30.00 in Hourly Precipitation: 0.00 in Graphs

Location: HADS SPRING BROOK CREEK NEAR ORILLIA WA US USGS, Renton, WA

Updated: 3:45 AM PDT

Temperature: 61 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Graphs

Location: Johnson Braund Design Group, Seattle, WA

Updated: 4:56 AM PDT

Temperature: 58.9 °F Dew Point: 55 °F Humidity: 88% Wind: Calm Pressure: 30.07 in Hourly Precipitation: 0.00 in Graphs

Location: Horseshoe Acres, Kent, WA

Updated: 4:56 AM PDT

Temperature: 54.1 °F Dew Point: 53 °F Humidity: 97% Wind: Calm Pressure: 29.74 in Hourly Precipitation: 0.00 in Graphs

Location: Marine View Estates, Federal Way, WA

Updated: 4:56 AM PDT

Temperature: 54.0 °F Dew Point: -45 °F Humidity: - Wind: North at 6.0 mph Pressure: 30.56 in Hourly Precipitation: 0.00 in Graphs

Location: MesoWest SB I-5 144th WA US WA DOT, Seattle, WA

Updated: 3:10 AM PDT

Temperature: 62 °F Dew Point: 57 °F Humidity: 84% Wind: NW at 2 mph Pressure: 30.12 in Hourly Precipitation: 0.00 in Graphs

Location: Vashon Loop Maury Island, Vashon, WA

Updated: 4:55 AM PDT

Temperature: 59.2 °F Dew Point: 55 °F Humidity: 86% Wind: East at 6.9 mph Pressure: 30.10 in Hourly Precipitation: 0.00 in Graphs

Location: Jim-East Hill, Kent, WA

Updated: 4:55 AM PDT

Temperature: 56.4 °F Dew Point: 55 °F Humidity: 94% Wind: Calm Pressure: 29.98 in Hourly Precipitation: 0.00 in Graphs

Location: East Hill, Kent, WA

Updated: 4:56 AM PDT

Temperature: 57.4 °F Dew Point: 53 °F Humidity: 84% Wind: Calm Pressure: 29.59 in Hourly Precipitation: 0.00 in Graphs

Location: benson meadows east, Kent, WA

Updated: 4:52 AM PDT

Temperature: 55.4 °F Dew Point: 55 °F Humidity: 99% Wind: Calm Pressure: 30.04 in Hourly Precipitation: - Graphs

Location: Victoria Park, Renton, WA

Updated: 4:52 AM PDT

Temperature: 58.4 °F Dew Point: 55 °F Humidity: 88% Wind: Calm Pressure: 30.08 in Hourly Precipitation: 0.00 in Graphs

Location: Green Tree Neighborhood, Kent, WA

Updated: 4:45 AM PDT

Temperature: 56.7 °F Dew Point: 56 °F Humidity: 99% Wind: Calm Pressure: 29.88 in Hourly Precipitation: 0.00 in Graphs

Location: Burien, Seattle, WA

Updated: 4:49 AM PDT

Temperature: 58.4 °F Dew Point: 55 °F Humidity: 88% Wind: Calm Pressure: 30.06 in Hourly Precipitation: 0.00 in Graphs

Location: Cascade-Fairwood, Renton, WA

Updated: 4:56 AM PDT

Temperature: 56.6 °F Dew Point: 55 °F Humidity: 95% Wind: Calm Pressure: 30.12 in Hourly Precipitation: 0.00 in Graphs

Location: Linda Highlands, Kent, WA

Updated: 4:43 AM PDT

Temperature: 53.8 °F Dew Point: 54 °F Humidity: 99% Wind: Calm Pressure: 30.14 in Hourly Precipitation: - Graphs

Location: Wandering Creek, Kent, WA

Updated: 4:55 AM PDT

Temperature: 53.2 °F Dew Point: 51 °F Humidity: 93% Wind: Calm Pressure: 30.06 in Hourly Precipitation: 0.00 in Graphs

Location: Alderbrook, Federal Way, WA

Updated: 4:55 AM PDT

Temperature: 56.3 °F Dew Point: 54 °F Humidity: 91% Wind: Calm Pressure: 30.08 in Hourly Precipitation: 0.00 in Graphs

Location: City Hall, Federal Way, WA

Updated: 4:55 AM PDT

Temperature: 56.6 °F Dew Point: 52 °F Humidity: 86% Wind: Calm Pressure: 29.99 in Hourly Precipitation: 0.00 in Graphs

Location: Burien, WA, Burien, WA

Updated: 4:56 AM PDT

Temperature: 57.7 °F Dew Point: 54 °F Humidity: 88% Wind: Calm Pressure: 29.73 in Hourly Precipitation: 0.00 in Graphs

Location: Seattle, Seattle, WA

Updated: 4:53 AM PDT

Temperature: 56.3 °F Dew Point: 56 °F Humidity: 97% Wind: Calm Pressure: 30.00 in Hourly Precipitation: - Graphs

Location: Renton Hill, Renton, WA

Updated: 4:30 AM PDT

Temperature: 60.2 °F Dew Point: 57 °F Humidity: 88% Wind: NW at 1.0 mph Pressure: 29.98 in Hourly Precipitation: 0.00 in Graphs

Location: Voice of Vashon, Vashon, WA

Updated: 4:56 AM PDT

Temperature: 57.2 °F Dew Point: 54 °F Humidity: 89% Wind: North at 6.0 mph Pressure: 30.08 in Hourly Precipitation: 0.00 in Graphs

Location: 1 Mile SW of Decatur High School, Federal Way, WA

Updated: 4:56 AM PDT

Temperature: 57.0 °F Dew Point: 57 °F Humidity: 100% Wind: Calm Pressure: 29.85 in Hourly Precipitation: 0.00 in Graphs

Location: Kent East Hill - GPM, Kent, WA

Updated: 4:56 AM PDT

Temperature: 54.3 °F Dew Point: 52 °F Humidity: 91% Wind: Calm Pressure: 30.05 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 
415 am PDT Sat Sep 20 2014 


Synopsis...upper level ridge over western Washington today shifting 
east on Sunday. Low level offshore flow today will push highs well 
above normal. The low level flow will turn onshore on Sunday with 
cooler temperatures along the coast and another warm day for the 
interior. A weakening front will arrive on Monday. A stronger system 
will reach the area on Wednesday. 


&& 


Short term...satellite imagery shows low clouds and fog have been 
on the decrease overnight. At 10z/3am most of the stratus and fog 
was confined to the coast...Strait and northwest interior with 
temperatures in the 50s and lower 60s. 


Offshore surface gradients strengthening today as a thermally 
induced trough expands northward up the coastline. VAD wind profile 
from the katx radar shows north winds to 20 knots at 1000 feet. This 
matches up well with the model cross sections over the area this 
morning. The combination of increasing offshore flow and good 
northerly winds right off the ground will make it tough for more fog 
to form this morning over the area. Will cut back on the areal 
coverage of the fog. With the low level flow expect the most 
persistent fog and low clouds to be in the Strait with the northerly 
flow upsloping against the Olympics. Temperatures aloft warming 
today with the 850 mb temperatures as warm as 20c by 00z Sunday. 850 
mb winds becoming more easterly during the day with increasing 
offshore flow at the surface. End result of all these variables is a 
warmer day for western Washington today with highs well above 
normal...in the 70s and lower 80s in most places. The coolest 
location will be the Strait of Juan Delaware fuca with the coast having 
the potential to be the warm spot. 


Upper level ridge beginning to shift east tonight with the low level 
flow remaining offshore. This will help keep low temperatures up 
despite the clear skies with 50s common and only the colder 
locations dropping down into the upper 40s. 


Bit of a tricky forecast on Sunday as far as the highs go for the 
interior. Upper level ridge continuing to move to the east on 
Sunday. Low level flow starts off the day offshore but by 00z Monday 
the thermally induced trough has moved east of the Cascades and the 
low level flow has turned onshore. Transition to onshore flow will 
result in a stratus surge up the coast on Sunday cooling highs back 
down to near 70 degrees. Highs for the interior on Sunday will be 
dependent on when the transition to onshore flow takes places. With 
the current forecasted transition in the afternoon will result in 
highs a couple of degrees warmer on Sunday versus saturdays readings 
..70s to middle 80s. A little quicker transition to onshore flow than 
forecasted will keep highs near saturdays maximum temperatures. 


Low level onshore flow continuing into Sunday night with a marine 
push bringing stratus into the interior overnight into early Monday 
morning. Lows will be mostly in the 50s. 


Mostly cloudy day in store for Monday with the stratus in the 
morning followed by middle and high level clouds in the afternoon as a 
weakening front approaches the area. Highs much cooler over the 
interior with 10-15 degrees of cooling putting highs in the middle 60s 
to lower 70s. 


Weakening front moving through the area Monday night for a chance of 
showers with lows in the 50s. 


Long term...extended models in good agreement on the 00z run. Both 
the GFS and European model (ecmwf) staying with the idea of a break on Tuesday with 
the next system approaching the area late in the day. This will 
induce a little low level offshore flow pushing highs into the lower 
to middle 70s over the interior with a little cooler temperatures along 
the coast. Large upper level trough setting up off the coast Tuesday 
night and remaining off the coast for most of the remainder of the 
extended period. Much stronger and more organized system spinning 
out of the trough moving through western Washington on Wednesday 
with the precipitation out ahead of the system moving into the area 
Tuesday night. With the trough remaining offshore chance of rain 
will stay in the forecast on Thursday. Both models have the trough 
moving inland on Friday which would lower the probability of precipitation. Will wait for a 
couple of more similar solutions before taking the chance of rain 
out of the Friday forecast. Felton 


&& 


Aviation...an upper ridge over the area will shift inland tonight 
with increasing southwest flow aloft. At the surface...offshore flow 
will prevail today and tonight with a trough along the coast. Air 
mass stable with areas of low level moisture this morning. 


Skies have been clearing overnight as offshore flow strengthens. 
Clearing has allowed fog to form in some locations but it has been 
somewhat patchy so far. The fog will probably increase a bit through 
the early morning hours...then burn off by middle to late morning. 


Ksea...skies have cleared as offshore flow increases. There is a 
chance some fog could affect the terminal for a few hours this 
morning which will be covered with a tempo group in the taf. 
Northerly wind 4-8 knots...increasing to 8-12 knots this afternoon. 
Schneider 


&& 


Marine...low level offshore flow will prevail today and tonight 
with a surface trough along the coast. Small Craft Advisory east 
winds are likely for the western straight and adjacent coastal 
waters zone tonight and Sunday morning. There will also be some 10 
foot west swell over the coastal waters this morning. 


Onshore flow will return Sunday as the trough along the coast shifts 
inland. There could be a period of Small Craft Advisory southerlies 
for the coastal waters Sunday as onshore flow develops. 


A weak front will cross the waters Monday. A stronger frontal system 
will move through the area Tuesday and Wednesday. This system could 
bring gale force southerly winds to the coastal waters and Small 
Craft Advisory winds to parts of the inland waters. Schneider 


&& 


Sew watches/warnings/advisories... 
Washington...none. 
Pz...Small Craft Advisory for hazardous seas coastal waters. 


&& 


$$ 


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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