Coulee City, Washington Weather Conditions

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Current Conditions

  • 45°
  • Clear
  • Wind: SE 4 mph
  • Humidity: 82%
  • Visibility: 10.0 miles
  • Dew Point: 40°
  • Pressure: 29.60 in. -
  • Heat Index: 44

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Next 12 Hours

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7  am
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1  pm
4  pm
Partly Cloudy
Partly Cloudy
Chance of Rain
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Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Friday
  • Chance of Rain
  • High: 54 °
  • Low: 27 °
  • Chance of Rain
  • Saturday
  • Partly Cloudy
  • High: 28 °
  • Low: 10 °
  • Partly Cloudy
  • Sunday
  • Clear
  • High: 25 °
  • Low: 10 °
  • Clear
  • Monday
  • Mostly Cloudy
  • High: 28 °
  • Low: 14 °
  • Mostly Cloudy
  • Tuesday
  • Partly Cloudy
  • High: 30 °
  • Low: 10 °
  • Partly Cloudy

Forecast for Coulee City, Washington

Updated: 1:00 AM PST on November 28, 2014

Wind Advisory in effect from 1 PM Friday to midnight PST Friday night...
  • Friday

    Overcast with a chance of rain. Fog early. High of 54F. Winds from the SSW at 10 to 15 mph with gusts to 30 mph. Chance of rain 20%.

  • Friday Night

    Partly cloudy with a chance of snow. Low of 27F. Breezy. Winds from the WNW at 15 to 20 mph. Chance of snow 20%.

  • Saturday

    Partly cloudy in the morning, then clear. High of 28F with a windchill as low as -2F. Breezy. Winds from the North at 15 to 20 mph.

  • Saturday Night

    Clear. Low of 10F with a windchill as low as -2F. Breezy. Winds from the North at 10 to 20 mph.

  • Sunday

    Clear. High of 25F with a windchill as low as -2F. Winds from the North at 5 to 10 mph.

  • Sunday Night

    Clear in the evening, then partly cloudy. Low of 10F. Winds from the North at 5 to 10 mph.

  • Monday

    Overcast in the morning, then mostly cloudy. High of 28F. Winds less than 5 mph.

  • Monday Night

    Overcast. Low of 14F. Winds less than 5 mph.

  • Tuesday

    Partly cloudy. High of 30F with a windchill as low as 5F. Winds from the North at 5 to 10 mph.

  • Tuesday Night

    Partly cloudy. Low of 10F with a windchill as low as 3F. Winds from the North at 5 to 10 mph.

  • Wednesday

    Mostly cloudy. High of 32F. Winds less than 5 mph.

  • Wednesday Night

    Partly cloudy. Fog overnight. Low of 16F. Winds less than 5 mph.

  • Thursday

    Partly cloudy. Fog early. High of 36F. Winds less than 5 mph.

  • Thursday Night

    Clear. Fog overnight. Low of 18F. Winds less than 5 mph.

  • Friday

    Partly cloudy. Fog early. High of 28F. Winds from the North at 5 to 10 mph.

  • Friday Night

    Partly cloudy. Fog overnight. Low of 19F. Winds less than 5 mph.

  • Saturday

    Partly cloudy. Fog early. High of 30F. Winds less than 5 mph.

  • Saturday Night

    Partly cloudy. Fog overnight. Low of 23F. Winds less than 5 mph.

  • Sunday

    Partly cloudy. Fog early. High of 27F. Winds less than 5 mph.

  • Sunday Night

    Partly cloudy. Fog overnight. Low of 23F. Winds less than 5 mph.

  • Monday

    Partly cloudy. Fog early. High of 28F. Winds less than 5 mph.

  • Monday Night

    Clear. Fog overnight. Low of 23F. Winds less than 5 mph.

Severe Weather Alert Descriptions

 Wind Advisory  Statement as of 8:39 PM PST on November 27, 2014

... Wind Advisory remains in effect from 1 PM Friday to midnight
PST Friday night...

* winds... southwest 15 to 30 mph with gusts up to 50 mph.

* Timing... Friday afternoon and evening. Winds will decrease by

* Impacts... local strong wind gusts will break tree branches and
move unanchored objects. Scattered power outages will be
possible. Controlling high profile vehicles may be difficult...
   especially along north to south oriented highways including
195 and 95.

Precautionary/preparedness actions...

A Wind Advisory means that wind gusts of 45 to 50 mph are
expected. Winds this strong can make driving difficult...
especially for high profile vehicles. Use extra caution.

 Record Report  Statement as of 12:30 am PST on November 28, 2014

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: Adrian, Soap Lake, WA

Updated: 3:57 AM PST

Temperature: 45.9 °F Dew Point: 40 °F Humidity: 81% Wind: South at 6.7 mph Pressure: 29.55 in Hourly Precipitation: 0.00 in Windchill: 42 °F Graphs

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

Updated: 2:15 AM PST

Temperature: 46 °F Dew Point: 43 °F Humidity: 89% Wind: WNW at 6 mph Pressure: - Hourly Precipitation: 0.00 in Windchill: 43 °F Graphs

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

Updated: 2:10 AM PST

Temperature: 42 °F Dew Point: 42 °F Humidity: 100% Wind: West at 12 mph Pressure: - Hourly Precipitation: 0.00 in Windchill: 35 °F Graphs

MSN Maps of:

Temp: Dew Point: Humidity Wind Pressure Hr Precip -

NWS Forecaster Discussion

Area forecast discussion 
National Weather Service Spokane Washington 
254 am PST Friday Nov 28 2014 

a rainy and breezy weather pattern will envelope the region 
going today, but snow levels will remain above pass levels for 
motorists traveling. The arrival of a very cold and windy Arctic 
front Friday night into Saturday will bring winter driving 
conditions to the mountain passes and much colder weather for the 
weekend. Cold conditions, with a few minor snow bearing weather 
disturbances, is forecast for the new work week. 



Today through saturday: the biggest change to the previous fcst 
was the issue a winter wx advsy for snow for Saturday for the 
cntrl Idaho Panhandle mtn zone (mostly Shoshone county) for 
significant snow accumulations down to the valley floors. This 
could be a potentially busy I-90 travel day back home following 
Thanksgiving. The Wind Advisory for today has not changed. Very 
mild temps and windy conditions are still expected today as we 
remain in the pre-Arctic cold front passage expected Fri nt. A 
nearly unidirectional vertical SW wind profile... with 40-50kt 
aloft...will help to provide very efficient mixing and Transfer 
of these higher speeds around 5k ft aloft to the sfc. Snow levels 
will remain very high today, but falling quickly to the sfc as the 
surge of very cold air behind the Arctic front works its way from 
north to south across ern WA and north Idaho Sat. The most tricky 
part of the fcst will be snow amnts. This front and associated 
upper wave will move through quickly and help to limit snow 
accumulations. Offsetting this somewhat will be respectable lg- 
scale forcing for ascent with the wave as well as a strong lower 
tropospheric upslope component of flow into the Idaho Panhandle 
Sat. Also, swe ratios (once the cold air mass fully arrives) will 
be at least 20-30:1, promoting heavier accumulations. And even 
moderately gusty winds would produce blowing snow and restricted 
visibilities where snow is expected. We'll have to watch the Camas 
Prairie of Idaho for significant snow accumulations Sat nt as the 
low-level flow veers to the northwest and enhances the upslope flow. 
Confidence is not great as far as snow accumulations for the 
Spokane area Sat. The majority of model guidance (which we've 
favored) shows the best pcpn threat ending very close to when the 
cold air moves into the area. We'll be watching the scenario 
closely, and adjust the snowfall fcst accordingly and as quickly 
as possible as soon as these snow ingredients allow US to fine 
tune the accumulations better. Bz 

Saturday night through Monday...the region will transition to a 
cold and dry weather pattern as a polar front swings south across 
the inland northwest. Gusty north winds will continue to be 
channeled down the Okanogan Valley Saturday night. The combination 
of very cold temperatures and windy conditions will result in wind 
chill temperatures of -15 to -20 f overnight. The strong surface 
pressure gradient fostering the elevated winds will slacken Sunday 
as the low pressure center moves off to the southeast and weakens. 
This will allow winds to diminish and become more terrain driven. 
High temperatures Sunday will be 12 to 15 degrees below seasonal 
normals. While most valley locations will be in the low to mid 
20s, some of the northern valleys will remain in the teens during 
the day, then drop back near zero Sunday night. 

The large scale pattern will become more westerly by Monday. Without 
the reinforcing cold north winds, temperatures will start to 
moderate somewhat. A closed low off the California coast will drift east, 
acting to push the frontal boundary back north as a warm front. 
The 00z run of both the GFS and the European model (ecmwf) now keep this front 
mostly to our south with just the southeast zones under the threat 
of precipitation from this feature. The warm front will battle 
with the deep cold air in place. Some warm air may push in aloft 
but for now wet bulb temperatures remain below freezing throughout 
the day Monday so precip would likely fall as snow. 

Monday night through Thursday...the extended forecast has been 
trended toward the European model (ecmwf) which builds a foldover ridge over the 
region in response to the California offshore low. This is a drier 
forecast than the GFS which brings the moisture stream farther 
north in more zonal flow. There will be a very gradual warmup 
since winds will be light and mainly terrain driven with limited 
mixing potential. The ridge does not hang around for long. It will 
be pushed east once the coastal low moves inland during the mid- 
week period, bringing the next round of precipitation to the 
region. /Kelch 


06z tafs: a developing storm system will bring mean increasing 
clouds and rain chances over the next 24 hours. The best chances 
will start late tonight into Friday morning around puw/lws. 
Chances will also come toward the geg to Coe areas by Friday 
morning, but the better threat here will be in afternoon and 
evening. Look for VFR conditions, with local MVFR/IFR cigs 
possible in heavier precipitation as Friday afternoon progresses 
into evening. The lowest precipitation threat will be over the Lee 
of the Cascades and deeper Columbia Basin, including eat/mwh. 
There is some potential for fog and stratus to develop overnight 
and early Friday around eat, but latest forecasts guidance 
suggests it may not be as deep if it develops at all. In the messy 
pattern, there will also be breezy and gusty winds, but these may 
be decoupled tonight and early Friday leading to areas of low level wind shear. By 
mid to late morning/afternoon the atmosphere begins to mixed again 
and gradients will tighten with the incoming low, leading to 
breezy conditions. Some winds gusts between 30 and 45 kts will be 
possible in the afternoon, especially over the expose taf sites 
including geg. 

Note: the visible sensor at eat is out of service so amendments to 
visible are not scheduled. The offending sensor replacement is on 
order and may be returned to service by Saturday. /J. Cote' 


Preliminary point temps/pops... 
Spokane 50 26 27 10 23 13 / 70 80 20 0 0 0 
Coeur D'Alene 49 29 29 12 23 13 / 90 100 20 10 0 0 
Pullman 53 31 32 12 25 17 / 90 100 50 10 0 0 
Lewiston 57 37 38 20 28 20 / 60 90 60 20 0 0 
Colville 47 22 23 3 21 9 / 70 60 10 0 0 0 
Sandpoint 45 26 27 8 20 8 / 90 100 40 10 0 0 
Kellogg 44 29 30 10 21 11 / 100 100 70 10 0 0 
Moses Lake 55 27 29 8 25 13 / 30 20 10 0 0 0 
Wenatchee 49 29 30 13 23 12 / 30 10 10 0 0 10 
Omak 46 17 19 1 18 8 / 30 10 10 0 0 0 


Otx watches/warnings/advisories... 
Idaho...Winter Weather Advisory from 4 am to 4 PM PST Saturday for 
central Panhandle mountains. 

Wind Advisory from 1 PM this afternoon to midnight PST tonight 
for Idaho Palouse. 

Washington...Wind Advisory from 1 PM this afternoon to midnight PST tonight 
for lower Garfield and Asotin counties-Spokane area-upper 
Columbia Basin-Washington Palouse. 



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