Des Moines, Washington Weather Conditions

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Current Conditions

  • 68°
  • Partly Cloudy
  • Wind: NNE 8 mph
  • Humidity: 49%
  • Visibility: 10.0 miles
  • Dew Point: 48°
  • Pressure: 30.14 in. +

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Next 12 Hours

8  am
11  am
2  pm
5  pm
8  pm
Clear
Clear
Clear
Clear
Clear
Clear
Clear
Clear
Partly Cloudy
Partly Cloudy
66°
73°
82°
86°
77°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Thursday
  • Clear
  • High: 86 °
  • Low: 59 °
  • Clear
  • Friday
  • Partly Cloudy
  • High: 86 °
  • Low: 61 °
  • Partly Cloudy
  • Saturday
  • Partly Cloudy
  • High: 84 °
  • Low: 59 °
  • Partly Cloudy
  • Sunday
  • Partly Cloudy
  • High: 84 °
  • Low: 59 °
  • Partly Cloudy
  • Monday
  • Partly Cloudy
  • High: 86 °
  • Low: 59 °
  • Partly Cloudy

Forecast for Des Moines, Washington

Updated: 8:00 AM PDT on July 31, 2014

  • Thursday

    Clear. High of 86F. Winds from the North at 5 to 15 mph.

  • Thursday Night

    Partly cloudy in the evening, then clear. Low of 59F. Winds from the NNE at 5 to 15 mph.

  • Friday

    Mostly cloudy in the morning, then overcast. High of 86F. Winds from the North at 5 to 15 mph.

  • Friday Night

    Partly cloudy. Fog overnight. Low of 61F. Winds from the NNE at 5 to 15 mph shifting to the WNW after midnight.

  • Saturday

    Partly cloudy. Fog early. High of 84F. Winds from the SW at 5 to 10 mph shifting to the WNW in the afternoon.

  • Saturday Night

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

  • Sunday

    Clear in the morning, then partly cloudy. High of 84F. Winds less than 5 mph.

  • Sunday Night

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

  • Monday

    Partly cloudy. High of 86F. Winds less than 5 mph.

  • Monday Night

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

  • Tuesday

    Partly cloudy. High of 86F. Winds less than 5 mph.

  • Tuesday Night

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

  • Wednesday

    Partly cloudy. High of 84F. Winds less than 5 mph.

  • Wednesday Night

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

  • Thursday

    Partly cloudy. High of 84F. Winds less than 5 mph.

  • Thursday Night

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

  • Friday

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

  • Friday Night

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

  • Saturday

    Partly cloudy. High of 68F. Winds less than 5 mph.

  • Saturday Night

    Clear. Low of 55F. Winds less than 5 mph.

  • Sunday

    Partly cloudy. High of 73F. Winds less than 5 mph.

  • Sunday Night

    Clear. Low of 55F. Winds less than 5 mph.

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: Riverview, Kent, WA

Updated: 8:24 AM PDT

Temperature: 70.0 °F Dew Point: 55 °F Humidity: 59% Wind: NE at 2.2 mph Pressure: 29.93 in Hourly Precipitation: - Heat Index: - Graphs

Location: Des Moines, Seattle, WA

Updated: 8:31 AM PDT

Temperature: 68.7 °F Dew Point: 53 °F Humidity: 57% Wind: ENE at 4.0 mph Pressure: 29.94 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: South Burien, Burien, WA

Updated: 8:31 AM PDT

Temperature: 69.3 °F Dew Point: 51 °F Humidity: 52% Wind: NE at 1.6 mph Pressure: 29.77 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Normandy Park, Normandy Park, WA

Updated: 8:17 AM PDT

Temperature: 65.7 °F Dew Point: 51 °F Humidity: 60% Wind: NE at 2.0 mph Pressure: 30.09 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Woodmont, Des Moines, WA

Updated: 8:31 AM PDT

Temperature: 57.8 °F Dew Point: 54 °F Humidity: 87% Wind: Calm Pressure: 30.11 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: McMicken Heights, SeaTac, WA

Updated: 7:58 AM PDT

Temperature: 63.1 °F Dew Point: 51 °F Humidity: 64% Wind: NNE at 2.0 mph Pressure: 30.10 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

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

Updated: 7:00 AM PDT

Temperature: 60 °F Dew Point: - Humidity: - Wind: SE at 1 mph Pressure: - Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Laurelwood North, Federal Way, WA

Updated: 8:31 AM PDT

Temperature: 63.7 °F Dew Point: 54 °F Humidity: 71% Wind: WSW at 1.1 mph Pressure: 30.16 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Lower Scenic Hill, Kent, WA

Updated: 8:30 AM PDT

Temperature: 62.6 °F Dew Point: 53 °F Humidity: 70% Wind: Calm Pressure: 30.03 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

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

Updated: 7:45 AM PDT

Temperature: 66 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Johnson Braund Design Group, Seattle, WA

Updated: 8:30 AM PDT

Temperature: 66.5 °F Dew Point: 53 °F Humidity: 62% Wind: Calm Pressure: 30.09 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Horseshoe Acres, Kent, WA

Updated: 8:31 AM PDT

Temperature: 65.7 °F Dew Point: 58 °F Humidity: 77% Wind: Calm Pressure: 29.76 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Marine View Estates, Federal Way, WA

Updated: 8:31 AM PDT

Temperature: 63.0 °F Dew Point: -39 °F Humidity: - Wind: NNE at 7.0 mph Pressure: 30.60 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

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

Updated: 7:10 AM PDT

Temperature: 66 °F Dew Point: 52 °F Humidity: 61% Wind: NW at 2 mph Pressure: 30.15 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: MesoWest AUBRN WA US UPR, Pacific, WA

Updated: 7:35 AM PDT

Temperature: 73 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Heat Index: 71 °F Graphs

Location: Vashon Loop Maury Island, Vashon, WA

Updated: 8:30 AM PDT

Temperature: 62.8 °F Dew Point: 53 °F Humidity: 70% Wind: ENE at 2.9 mph Pressure: 30.13 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Jim-East Hill, Kent, WA

Updated: 8:29 AM PDT

Temperature: 69.4 °F Dew Point: 52 °F Humidity: 54% Wind: NNE at 4.0 mph Pressure: 30.00 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: East Hill, Kent, WA

Updated: 8:31 AM PDT

Temperature: 67.8 °F Dew Point: 37 °F Humidity: 32% Wind: Calm Pressure: 29.62 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: benson meadows east, Kent, WA

Updated: 8:27 AM PDT

Temperature: 69.3 °F Dew Point: 53 °F Humidity: 56% Wind: NNE at 4.7 mph Pressure: 30.07 in Hourly Precipitation: - Heat Index: - Graphs

Location: Victoria Park, Renton, WA

Updated: 8:16 AM PDT

Temperature: 63.9 °F Dew Point: 54 °F Humidity: 69% Wind: NW at 1.0 mph Pressure: 30.10 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Green Tree Neighborhood, Kent, WA

Updated: 8:30 AM PDT

Temperature: 76.6 °F Dew Point: 51 °F Humidity: 41% Wind: North at 1.6 mph Pressure: 29.89 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: Burien, Seattle, WA

Updated: 8:29 AM PDT

Temperature: 67.9 °F Dew Point: 52 °F Humidity: 56% Wind: Calm Pressure: 30.09 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Cascade-Fairwood, Renton, WA

Updated: 8:31 AM PDT

Temperature: 66.3 °F Dew Point: 55 °F Humidity: 67% Wind: West at 3.5 mph Pressure: 30.15 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Linda Highlands, Kent, WA

Updated: 8:27 AM PDT

Temperature: 67.1 °F Dew Point: 52 °F Humidity: 59% Wind: NNE at 4.7 mph Pressure: 30.15 in Hourly Precipitation: - Heat Index: - Graphs

Location: Wandering Creek, Kent, WA

Updated: 8:30 AM PDT

Temperature: 76.1 °F Dew Point: 52 °F Humidity: 43% Wind: NNW at 1.0 mph Pressure: 30.09 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: Crestview West, Auburn, WA

Updated: 8:23 AM PDT

Temperature: 57.5 °F Dew Point: 55 °F Humidity: 91% Wind: Calm Pressure: 29.82 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Alderbrook, Federal Way, WA

Updated: 8:30 AM PDT

Temperature: 66.1 °F Dew Point: 56 °F Humidity: 69% Wind: Calm Pressure: 30.11 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: City Hall, Federal Way, WA

Updated: 8:30 AM PDT

Temperature: 65.7 °F Dew Point: 51 °F Humidity: 59% Wind: Calm Pressure: 30.02 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Burien, WA, Burien, WA

Updated: 8:30 AM PDT

Temperature: 68.0 °F Dew Point: 49 °F Humidity: 51% Wind: NNE at 2.6 mph Pressure: 29.75 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Seattle, Seattle, WA

Updated: 8:17 AM PDT

Temperature: 66.7 °F Dew Point: 52 °F Humidity: 59% Wind: SSE at 2.2 mph Pressure: 30.01 in Hourly Precipitation: - Heat Index: - Graphs

Location: Renton Hill, Renton, WA

Updated: 8:30 AM PDT

Temperature: 67.4 °F Dew Point: 52 °F Humidity: 58% Wind: Calm Pressure: 30.00 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Voice of Vashon, Vashon, WA

Updated: 8:28 AM PDT

Temperature: 67.8 °F Dew Point: 52 °F Humidity: 56% Wind: Calm Pressure: 30.11 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

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

Updated: 8:31 AM PDT

Temperature: 61.9 °F Dew Point: 53 °F Humidity: 74% Wind: Calm Pressure: 29.88 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

MSN Maps of:

Temp: Dew Point: Humidity Wind Pressure Hr Precip -

NWS Forecaster Discussion




Area forecast discussion 
National Weather Service Seattle Washington 
250 am PDT Thursday Jul 31 2014 


Synopsis...a strong upper level ridge over the Pacific northwest 
will bring warm sunny days to western Washington through much of the 
next week. Weak onshore flow will result in some night and morning 
low clouds from tonight Onward...especially along the coast. Weak 
instability aloft Friday through Sunday could result in isolated 
afternoon and evening thunderstorms over the mountains. 


&& 


Short term...a large strong upper level ridge will remain over the 
western U.S. For the next week. The ridge axis is currently over The 
Rockies which puts West Washington under weak SW flow aloft. The two forecast 
problems this morning are the potential for convection over the 
mountains and the strength and direction of low level onshore flow 
which impacts stratus coverage and daily temperatures. 


The upper level ridge will be strongest today with 500 mb heights 
around 5880 meters. Stratus cleared from the coastal waters 
yesterday and low level onshore flow has been weaker and more 
northwesterly than 24 hours ago. In particular the onshore flow up 
the lower Chehalis valley has been non-existent overnight. Fog 
product imagery at 09z/2 am shows no stratus anywhere. With the 
strong ridge overhead and no cooling from the onshore flow maximum temperatures 
should be higher today...with the highest readings in the middle to 
upper 80s over the central and SW interior. 


The NAM boundary layer relative humidity indicates stratus filling in along the 
coast tonight then spreading partway inland after midnight...but 
probably only reaching the SW part of Puget Sound sound Friday morning. 
The next onshore flow cycle Friday night-Saturday should bring 
stratus and patchy fog to most of the interior by Saturday morning. 


All the models show a weak upper level shortwave trough just west of 
the central/southern Oregon coast this morning. Models all agree on 
bringing the weak shortwave northward off the Washington coast on Friday and 
then over northwest Washington/SW b.C. On Saturday. The shortwave will increase the 
instability over West Washington Friday and Saturday and shift the middle level 
flow around 700 mb to southerly. The southerly flow will allow 
moisture from convection over the Oregon Cascades today and Friday 
to advect up over West Washington. The GFS drops lifted indices down to around 
-2 both afternoons while the NAM is more unstable at around -5. Both 
models also show a pocket of instability over the east Olympics. The 
forecast was already in good shape with a chance of thunderstorms so 
no changes were made. 


Maximum temperatures will cool slightly...back to the middle 70s to middle 80s Friday 
and Saturday. This is due to the combination of general air mass 
cooling from the upper level shortwave and to the return of stratus 
in the shallow marine layer. Kam 


Long term...Sunday looks about the same as Saturday over The 
Lowlands. Onshore flow will allow morning stratus to form over most 
inland areas...followed by a midday burn-off. Maximum temperatures will remain 
in the middle 70s to middle 80s inland. The upper level shortwave trough 
will shift over East Washington/southeast b.C. With westerly 700 mb flow developing 
over West Washington. This should end the potential for convection over the 
mountains on Sunday. However I will hold on to a chance of Cascade 
thunderstorms for Sunday afternoon and evening a little longer just 
in case. 


A weaker upper level ridge will remain over the Pacific northwest on 
Monday...then both the GFS/European model (ecmwf) have the remnant of a weak front 
reaching West Washington late Tuesday and early Wednesday. This looks like a 
dry feature so the main effect will probably be continuing weak to 
moderate onshore flow. 500 mb heights remain around 5860 meters so 
maximum temperatures should remain in the 70s and 80s. Kam 


&& 


Aviation...an upper ridge is over the western U.S. With light southwest 
flow aloft over Washington. At the surface there is high pressure just 
offshore with thermally induced low pressure east of the Cascades. 
Patchy morning fog coast and Strait otherwise clear. The air will be 
unstable over the mountains in the afternoon and evening hours each 
day and there is a chance of a thunderstorms in the forecast over 
the mountains Friday afternoon and evening. 


Ksea...clear with an afternoon and evening northerly breeze. 


&& 


Marine...the pattern hasn't changed with high pressure over the 
offshore waters and thermally induced low pressure east of the 
Cascades. There is not much marine fog or low clouds but there will 
probably be more of that by Friday morning as a shallow marine layer 
develops. Race Rocks will flirt with westerly gales each evening...I 
think there is a better chance of getting up around 35kt Friday 
evening than there is tonight. Along the coast...Destruction Island 
gets up around 25kts each evening...and a Small Craft Advisory there 
blends pretty well with the Portland marine forecast. 


&& 


Sew watches/warnings/advisories... 
Washington...none. 
Pz...for this afternoon and tonight...Small Craft Advisory central 
and East Entrance to the Strait...and Small Craft Advisory James 
Island to Cape Shoalwater and out 10 nm. 


&& 


$$ 


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



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