Coulee City, Washington Weather Conditions

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Current Conditions

  • 50°
  • Clear
  • Wind: North 6 mph
  • Humidity: 54%
  • Visibility: 10.0 miles
  • Dew Point: 34°
  • Pressure: 29.97 in. 0

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Next 12 Hours

3  am
6  am
9  am
12  pm
3  pm
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Tuesday
  • Mostly Cloudy
  • High: 75 °
  • Low: 51 °
  • Mostly Cloudy
  • Wednesday
  • Overcast
  • High: 70 °
  • Low: 50 °
  • Overcast
  • Thursday
  • Overcast
  • High: 74 °
  • Low: 51 °
  • Overcast
  • Friday
  • Partly Cloudy
  • High: 76 °
  • Low: 51 °
  • Partly Cloudy
  • Saturday
  • Partly Cloudy
  • High: 76 °
  • Low: 52 °
  • Partly Cloudy

Forecast for Coulee City, Washington

Updated: 2:43 PM PDT on October 5, 2015

  • Tonight

    Clear. Lows in the lower to mid 40s. Light wind... becoming northeast 5 to 10 mph overnight.

  • Tuesday

    Sunny. Highs in the lower to mid 70s. Light wind... becoming southwest 5 to 10 mph in the afternoon.

  • Tuesday Night

    Partly cloudy. Lows in the mid 40s to lower 50s. Southwest wind 5 to 10 mph.

  • Wednesday

    Partly sunny. Highs in the lower 70s. Southwest wind 5 to 10 mph.

  • Wednesday Night

    Mostly cloudy with a 20 percent chance of rain. Lows in the lower 50s. Southwest wind 5 to 10 mph.

  • Thursday

    Partly sunny with a 20 percent chance of rain. Highs in the lower to mid 70s.

  • Thursday Night through Friday Night

    Mostly cloudy. Lows in the upper 40s to mid 50s. Highs in the 70s.

  • Saturday

    Partly sunny with a 20 percent chance of rain. Highs in the lower to mid 70s.

  • Saturday Night

    Windy. Mostly cloudy with a 20 percent chance of rain. Lows in the lower to mid 50s.

  • Sunday

    Windy. Mostly cloudy with a 20 percent chance of rain. Highs in the mid 60s to lower 70s.

  • Sunday Night and Columbus Day

    Breezy. Mostly cloudy. A 20 percent chance of rain showers. Lows in the mid to upper 40s. Highs in the upper 60s to lower 70s.

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: Coulee City, Coulee City, WA

Updated: 2:43 AM PDT

Temperature: 45.9 °F Dew Point: 36 °F Humidity: 69% Wind: NE at 2.7 mph Pressure: 28.33 in Hourly Precipitation: 0.00 in Windchill: 46 °F Graphs

Location: Rimrock Cove, Coulee City, WA

Updated: 2:02 AM PDT

Temperature: 54.0 °F Dew Point: 41 °F Humidity: 62% Wind: Calm Pressure: 29.90 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Adrian, Soap Lake, WA

Updated: 2:42 AM PDT

Temperature: 46.4 °F Dew Point: 39 °F Humidity: 74% Wind: Calm Pressure: 29.97 in Hourly Precipitation: 0.00 in Windchill: 46 °F Graphs

Location: Ephrata Mike, Ephrata, WA

Updated: 2:40 AM PDT

Temperature: 47.4 °F Dew Point: 36 °F Humidity: 65% Wind: Calm Pressure: 29.97 in Hourly Precipitation: 0.00 in Windchill: 47 °F Graphs

Location: Grand Coulee, WA [3.3 miles ESE], Grand Coulee, WA

Updated: 2:39 AM PDT

Temperature: 47.9 °F Dew Point: 38 °F Humidity: 68% Wind: SSE at 3.0 mph Pressure: 29.94 in Hourly Precipitation: 0.00 in Windchill: 48 °F Graphs

Location: FDR Estates, Grand Coulee, WA

Updated: 2:43 AM PDT

Temperature: 51.1 °F Dew Point: 43 °F Humidity: 73% Wind: SE at 4.0 mph Pressure: 29.96 in Hourly Precipitation: 0.00 in Windchill: - Graphs

MSN Maps of:

Temp: Dew Point: Humidity Wind Pressure Hr Precip -

NWS Forecaster Discussion

Area forecast discussion 
National Weather Service Spokane Washington 
227 am PDT Tuesday Oct 6 2015 

high pressure will deliver dry conditions and light winds today. 
This ridge of high pressure weakens mid week with a chance of 
light rain entering the region. A big shift in the weather pattern 
will bring an increasing risk for rain...mild temperatures...and 
windy conditions late week and into the weekend. 



Today through Wed nt: the upper ridging which helped to bring dry 
wx the last couple days will weaken over the region ahead of an 
approaching maritime frontal system currently off the pac NW 
coast. Our first threat of rain will be Wed, with this threat not 
ending until thurs. Forced by moderate moist isentropic ascent 
over a warmfront, this rain should be fairly light and amount to 
no more than a tenth of an inch for most towns. The main change we 
made to the fcst was to increase pcpn amnts a bit for southeast WA and 
the cntrl Idaho Panhandle Wed and Wed nt. By late Wed nt, this 
front will have moved far enough north to end the pcpn threat for 
a large part of the Columbia Basin.Bz 

Thursday through Friday morning: a warm front will continue to lift 
north out of the region and high pressure will briefly restrengthen. 
Look for lingering clouds and light rain to lift north through 
NE Washington and the Idaho Panhandle by late afternoon and majority of 
the region experiencing dry and mild conditions. 

Friday afternoon through tuesday: weather models continue to show an 
active weather pattern for the upcoming weekend...continuing into 
Monday before things calm down around Tuesday. This has been a 
consistent message over the last few days and confidence continues 
to grow. Confidence is highest for above normal warmth (fri/sat), 
rain along the Cascade crest and northern mountains, and gusty 
winds. Uncertainty exists for rain chances away from these 
locations, amounts in any given location, and strength of wind 

* Overview: the large scale weather pattern over the northern 
Pacific will undergo some major changes as low pressure becomes 
re- established over the Gulf of Alaska. A strengthening 
southwesterly jet on its southern and eastern flank will draw 
subtropical moisture toward the pac northwest. Initially, the jet is 
aimed into southwestern British Columbia Friday but shortwave 
energy ejecting from the low will waver the jet southward at 
times and allow frontal systems to pass through the region. This 
will be a very anomalously rich moisture plume which will contain 
the remnants of tropical storm 07c (oho) currently south of the 
Hawaiian islands. I anticipate this tropical moisture will also 
play havoc with weather models for the next few days regarding 
the finer details but all data suggest precipitable waters  to surge near to 
over an inch by the weekend. To put this into perspective: the 
precipitable water output on the naefs (north American ensemble forecast 
system) has never been observed in the cfsr climatology for a 
3-week period centered around October 10th. The period of record 
is from 1979-2009. 

* Rain: a steady and potentially moderate rain is setting up for 
the Cascade crest and northern mountains. Pending the strength 
of each frontal system, rain chances will waver north and south 
however it does look promising for a Cascade rain shadow so 
forecast will go with lower chances along Hwy 97 and western 
Columbia Basin, highest northern mountains, and carry the lowest 
confidence south of Spokane to Kellogg. Saturday night and 
Sunday look to be the best chance for rain outside the mountains 
with the passage of a cold front. Moderate rainfall amounts will 
be possible but carry high uncertainty. 

* Wind: Saturday and Sunday stand out as the windiest days right 
now. Per latest GFS, there is a potential for sustained winds 
between 15-30 mph with gusts toward 30-45 mph and higher gusts in 
the mountains. This will be a more typical wind direction that 
blows from southwest to northeast. 

* Temperatures: Friday and Saturday will be the warmest days with 
70s common in most locations. Some areas of southeastern Washington and 
the lower Idaho Panhandle stand a decent shot of 80s. The air mass 
will cool Sunday and Monday but only knock temperatures back into 
the 60s...still a handful of degrees above October standards. 

* Impacts: details are far from certain to hone in on exact 
impacts but pattern recognition suggest the potential for wind 
impacts and maybe excessive rain with the idea of moisture from a 
tropical storm coming through. Given how the Summer has gone, 
blowing dust cannot be ruled out either. /Sb 


06z tafs: high pressure will keep VFR conditions over aviation 
area. Near 00z Wednesday the high level cirrus clouds will start 
to thicken as they continue to invades the sky from the west and 
a weak surface trof may allow winds to shift to the southwest in 
the afternoon. /Pelatti 


Preliminary point temps/pops... 
Spokane 72 49 68 51 71 52 / 0 0 10 20 20 10 
Coeur D'Alene 72 46 68 48 71 50 / 0 0 10 20 20 10 
Pullman 74 46 68 51 74 51 / 0 0 10 30 10 10 
Lewiston 77 52 73 55 78 55 / 0 0 20 30 10 10 
Colville 76 45 69 47 69 47 / 0 10 10 20 20 10 
Sandpoint 69 41 66 43 67 46 / 0 10 10 20 20 10 
Kellogg 72 45 65 45 68 49 / 0 0 10 30 20 10 
Moses Lake 76 47 73 52 76 51 / 0 10 10 20 10 10 
Wenatchee 76 55 74 56 75 56 / 0 10 20 20 10 10 
Omak 74 51 74 53 73 53 / 0 10 10 20 20 10 


Otx watches/warnings/advisories... 


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