Coulee City, Washington Weather Conditions

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Current Conditions

  • 68°
  • Clear
  • Wind: WNW 16 mph
  • Humidity: 30%
  • Visibility: 10.0 miles
  • Dew Point: 35°
  • Pressure: 29.91 in. -

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Next 12 Hours

11  am
2  pm
5  pm
8  pm
11  pm
Clear
Clear
Clear
Clear
Clear
Clear
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
59°
66°
68°
59°
54°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Wednesday
  • Clear
  • High: 68 °
  • Low: 43 °
  • Clear
  • Thursday
  • Partly Cloudy
  • High: 68 °
  • Low: 45 °
  • Partly Cloudy
  • Friday
  • Partly Cloudy
  • High: 73 °
  • Low: 52 °
  • Partly Cloudy
  • Saturday
  • Partly Cloudy
  • High: 77 °
  • Low: 50 °
  • Partly Cloudy
  • Sunday
  • Partly Cloudy
  • High: 77 °
  • Low: 54 °
  • Partly Cloudy

Forecast for Coulee City, Washington

Updated: 8:00 AM PDT on October 01, 2014

  • Wednesday

    Clear. High of 68F. Winds from the WSW at 5 to 15 mph.

  • Wednesday Night

    Partly cloudy. Low of 43F. Winds from the NW at 10 to 15 mph.

  • Thursday

    Partly cloudy. High of 68F. Winds from the North at 5 to 10 mph shifting to the SSW in the afternoon.

  • Thursday Night

    Partly cloudy. Low of 45F. Winds less than 5 mph.

  • Friday

    Clear in the morning, then partly cloudy. High of 73F. Winds from the SE at 5 to 10 mph.

  • Friday Night

    Clear in the evening, then partly cloudy. Low of 52F. Winds less than 5 mph.

  • Saturday

    Overcast in the morning, then mostly cloudy. High of 77F. Winds less than 5 mph.

  • Saturday Night

    Clear. Low of 50F. Winds from the SW at 5 to 10 mph shifting to the NW after midnight.

  • Sunday

    Partly cloudy. High of 77F. Winds from the WSW at 5 to 10 mph.

  • Sunday Night

    Clear. Low of 54F. Winds less than 5 mph.

  • Monday

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

  • Monday Night

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

  • Tuesday

    Clear. High of 73F. Winds less than 5 mph.

  • Tuesday Night

    Clear. Low of 50F. Winds from the WNW at 5 to 15 mph.

  • Wednesday

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

  • Wednesday Night

    Clear. Low of 46F. Winds from the North at 5 to 10 mph.

  • Thursday

    Partly cloudy. High of 70F. Winds from the NE at 5 to 10 mph.

  • Thursday Night

    Partly cloudy. Low of 45F. Winds from the NNE at 5 to 10 mph.

  • Friday

    Partly cloudy. High of 68F. Winds from the NE at 5 to 10 mph.

  • Friday Night

    Partly cloudy. Low of 45F. Winds less than 5 mph.

  • Saturday

    Clear. High of 72F. Winds less than 5 mph.

  • Saturday Night

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

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: Adrian, Soap Lake, WA

Updated: 11:15 AM PDT

Temperature: 66.6 °F Dew Point: 40 °F Humidity: 37% Wind: Calm Pressure: 30.08 in Hourly Precipitation: 0.00 in Graphs

Location: MesoWest Soap Lake WA US WA DOT, Soap Lake, WA

Updated: 10:15 AM PDT

Temperature: 62 °F Dew Point: 39 °F Humidity: 43% Wind: SW at 6 mph Pressure: - Hourly Precipitation: 0.00 in Graphs

Location: MesoWest Coulee Dam West WA US WA DOT, Electric City, WA

Updated: 10:10 AM PDT

Temperature: 54 °F Dew Point: 35 °F Humidity: 48% Wind: NNE at 5 mph Pressure: - Hourly Precipitation: 0.00 in Graphs

Location: 3 miles ESE of Grand Coulee Dam, in Lincoln County, WA, Grand Coulee, WA

Updated: 11:10 AM PDT

Temperature: 57.6 °F Dew Point: 39 °F Humidity: 50% Wind: East at 1.0 mph 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 Spokane Washington 
1019 am PDT Wednesday Oct 1 2014 


Synopsis... 
another system skims by the region late today into tonight, with 
some clouds and breezy conditions and continued cooler than 
average temperatures. High pressure will gradually build in 
through the weekend and linger into the middle of next week. This 
will result in generally dry weather, with temperatures warming to 
above average. 


&& 


Discussion... 
today and tonight: the inland northwest will be in a progressive 
northwesterly flow with a few cloudy periods, isolated shower 
chances and below normal temperatures. Yesterday's shortwave is 
shifting southeast and a weak ridge of high pressure is building 
in this morning. Patchy fog, locally dense, will linger around the 
sheltered northeast valleys early today under this ridge. The 
onshore flow and approach of the next system will keep shower 
chances alive near the Cascade crest today and along the Canadian 
border late today into this evening. That next system was diving 
southeast across British Columbia this morning and models bring it toward 
northeast Washington/north Idaho late this afternoon into tonight. The brunt 
of the lift and moisture remains north of the Canadian border, 
hence the main threat of showers will linger near the immediate 
US/British Columbia border. But look for some increased middle to high clouds 
this afternoon and evening throughout the region, before some 
clearing develops overnight. The incoming wave will also lead to 
an increase in winds again this afternoon and evening. Nothing 
too strong, but noticeable in the 10 to 15 mph range with local 
gusts near 20 mph. Cooler air will continue to seep into the 
region on the northwesterly flow. With 850mb temperatures in the 
middle to upper singles (celsius), regional temperatures will 
remain below average. I added some patchy fog again across the 
sheltered northeast valleys overnight into Thursday morning. 
Abating winds, low level inversions and cooling overnight, behind 
the exiting middle to high clouds, will allow for this potential. 
/J. Cote' 


Thursday through Saturday...this will generally be a dry weather 
period as the upper level jet retreats to our north and east with 
the initial building and then the persisting upper level ridge 
over central portions of British Columbia. On Thursday the ridge 
is expected to make a swift easterly shift and amplification into 
west central British Columbia and move toward the British Columbia/Alberta 
border on Friday. The ridge axis is still expected to contain a 
nicely defined atmospheric river extending from just west of 
Hawaii to the British Columbia coast through Friday. This will likely bring very 
wet conditions to western British Columbia...but little weather activity this 
far south. In fact the main impact will likely be increasing high 
clouds late Thursday into early Friday associated with a weak mid- 
level warm front. Temperatures will warm steadily through this 
period with high temperatures in the 60s on Thursday and upper 60s 
to mid 70s on Friday.. 


For Saturday...previous model was showing the flattening of the 
upper level ridge with the atmospheric river surging south of the 
British Columbia border. By this point...the surge of moisture become much less 
coherent with most of it located above 10000 ft. Meanwhile 500 mb 
heights are quite lofty...578 dm or higher which is almost 2 
Standard deviations higher than normal for this time of year. The 
trend has been one of a slower flattening (ie more ridging) and 
consequently less precipitation. In fact...for the 00z 
models...the only strong precipitation signature was showing up 
near the west-facing slopes of the Cascades. The remainder of the 
inland northwest was showing dry conditions. Given such lofty 500 mb 
heights...this premise seems logical. We will back off pops 
further from previous forecasts, and leave most near the Canadian 
border. If this trend continues we may need to eliminate pops 
completely. Temperatures on Saturday will warm further with most 
valley highs in the 70s and even a few lower 80s over the lower 
Columbia Basin. Fx 


Saturday night through Tuesday night: extended portion of the 
forecast looks rather benign due to the jet stream remaining north 
of our area thanks in part to a ridge of high pressure near the 
area. Models are continuing to show the brunt of the moisture 
flowing along the jet stream leading to a prolonged period of rain 
for the British Columbia coastal area while we remain dry just to the southeast. The 
only chance of mentionable precipitation would be along the 
Cascade crest as small amounts of moisture stray away from the 
main flow into British Columbia. The majority of the region will only see mid 
and high clouds from the atmospheric river to our north. The main 
feature of note throughout this period would be the continuing 
above normal temperatures. The warm subtropical airmass from the 
central Pacific will keep our daytime highs 8-15 degrees above 
normal with widespread 70s and some 80s for lower areas expected. 
Overnight lows also remain above normal for this part of the year 
as the warm airmass coupled with increased cloud cover diminishes 
our amount of overnight radiative cooling. Overall the early part 
of next week can be summarized as warm and dry, a scenario all to 
common to the inland northwest this year. /Fliehman 


&& 


Aviation... 
18z tafs: expect mostly clear skies for the taf sites during the 
next 24 hours. Some areas of high levels clouds will filter into 
the region, meanwhile cumulus will be confined to mainly the 
mountains with tops obscurred. Areas of fog and stratus in the 
northern valleys continue to dissipate quickly, and there is a 
good chance that it will redevelop in similar areas again 
overnight. Confidence is low that it will develop at any taf 
sites. Gusty west/southwest will develop by mid afternoon with 
daytime heating, but should quickly taper off by mid evening with 
lighters winds overnight. /Rfox 


&& 


Preliminary point temps/pops... 
Spokane 63 39 64 39 70 46 / 0 0 0 0 0 0 
Coeur D'Alene 62 38 63 38 69 45 / 0 0 0 0 0 0 
Pullman 63 38 64 38 72 45 / 0 0 0 0 0 0 
Lewiston 70 44 70 43 77 49 / 0 0 0 0 0 0 
Colville 67 37 67 35 71 44 / 10 10 0 0 0 10 
Sandpoint 61 35 61 31 66 40 / 10 10 0 0 0 0 
Kellogg 56 40 58 37 65 46 / 10 0 0 0 0 0 
Moses Lake 71 40 69 39 76 49 / 0 0 0 0 0 0 
Wenatchee 70 45 69 44 76 53 / 0 0 0 0 0 0 
Omak 67 38 67 40 73 47 / 0 0 0 0 0 10 


&& 


Otx watches/warnings/advisories... 
Idaho...none. 
Washington...none. 
&& 


$$ 



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