Coulee City, Washington Weather Conditions

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Current Conditions

  • 65°
  • Clear
  • Wind: North 12 mph
  • Humidity: 20%
  • Visibility: 10.0 miles
  • Dew Point: 23°
  • Pressure: 30.29 in. -

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Next 12 Hours

12  pm
3  pm
6  pm
9  pm
12  am
Clear
Clear
Clear
Clear
Clear
Clear
Clear
Clear
Clear
Clear
64°
70°
70°
58°
53°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Saturday
  • Clear
  • High: 73 °
  • Low: 44 °
  • Clear
  • Sunday
  • Clear
  • High: 74 °
  • Low: 46 °
  • Clear
  • Monday
  • Clear
  • High: 77 °
  • Low: 49 °
  • Clear
  • Tuesday
  • Clear
  • High: 81 °
  • Low: 51 °
  • Clear
  • Wednesday
  • Partly Cloudy
  • High: 73 °
  • Low: 46 °
  • Partly Cloudy

Forecast for Coulee City, Washington

Updated: 11:20 AM PDT on January 18, 2015

  • Saturday

    Sunny. High 73F. Winds NNW at 10 to 20 mph.

  • Saturday Night

    Clear skies. Low 44F. Winds N at 5 to 10 mph.

  • Sunday

    Sunny skies. High 74F. Winds NNE at 5 to 10 mph.

  • Sunday Night

    Clear skies. Low 46F. Winds NNW at 5 to 10 mph.

  • Monday

    Sunny. High 77F. Winds E at 5 to 10 mph.

  • Monday Night

    A mostly clear sky. Low 49F. Winds NE at 5 to 10 mph.

  • Tuesday

    A few clouds from time to time. High 81F. Winds S at 5 to 10 mph.

  • Tuesday Night

    Clear skies with a few passing clouds. Low 51F. Winds NW at 10 to 15 mph.

  • Wednesday

    Considerable clouds early. Some decrease in clouds later in the day. High 73F. Winds NW at 10 to 15 mph.

  • Wednesday Night

    A few clouds. Low 46F. Winds NW at 10 to 20 mph.

  • Thursday

    Cloudy with occasional rain showers. High 68F. Winds SSW at 5 to 10 mph. Chance of rain 60%.

  • Thursday Night

    Rain showers early with clearing later at night. Low 44F. Winds W at 5 to 10 mph. Chance of rain 50%.

  • Friday

    Intervals of clouds and sunshine. High 66F. Winds W at 5 to 10 mph.

  • Friday Night

    Partly cloudy in the evening with more clouds for later at night. Low near 45F. Winds WNW at 5 to 10 mph.

  • Saturday

    Mostly cloudy skies. High 69F. Winds WSW at 5 to 10 mph.

  • Saturday Night

    A few clouds. Low around 45F. Winds NW at 5 to 10 mph.

  • Sunday

    Intervals of clouds and sunshine. High 69F. Winds SSE at 10 to 15 mph.

  • Sunday Night

    Partly cloudy skies early followed by increasing clouds with showers developing later at night. Low 46F. Winds WNW at 5 to 10 mph. Chance of rain 60%.

  • Monday

    Cloudy. High around 70F. Winds SW at 5 to 10 mph.

  • Monday Night

    Mostly cloudy skies with a few showers late. Low 46F. Winds W at 5 to 10 mph. Chance of rain 30%.

  • Tuesday

    Mainly cloudy. High 69F. Winds W at 5 to 10 mph.

  • Tuesday Night

    Partly cloudy during the evening. A few showers developing later during the night. Low 44F. Winds WNW at 5 to 10 mph. Chance of rain 30%.

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: Adrian, Soap Lake, WA

Updated: 12:24 PM PDT

Temperature: 65.5 °F Dew Point: 20 °F Humidity: 17% Wind: North at 6.7 mph Pressure: 30.25 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: APRSWXNET, Ephrata, WA

Updated: 12:00 PM PDT

Temperature: 66 °F Dew Point: 30 °F Humidity: 26% Wind: North at 2 mph Pressure: 30.29 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Ephrata Mike, Ephrata, WA

Updated: 12:25 PM PDT

Temperature: 66.6 °F Dew Point: 29 °F Humidity: 24% Wind: North at 8.0 mph Pressure: 30.26 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Grand Coulee, Grand Coulee, WA

Updated: 12:13 PM PDT

Temperature: 75.6 °F Dew Point: 29 °F Humidity: 18% Wind: NW at 2.7 mph Pressure: 29.94 in Hourly Precipitation: - Heat Index: 76 °F Graphs

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

Updated: 12:19 PM PDT

Temperature: 62.9 °F Dew Point: 20 °F Humidity: 19% Wind: WNW at 1.0 mph Pressure: 30.23 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 Spokane Washington 
1116 am PDT Sat Apr 18 2015 


Synopsis... 
a weak cold front has moved through the region overnight and will 
produce slightly cooler temperatures and some breezy winds for 
the weekend. The weather will remain dry however. Temperatures 
will warm next week with Tuesday being the warmest day. Following 
this warm and dry period, expected much cooler and showery 
conditions for the remainder of the week. 


&& 


Discussion... 
today and tonight...dry and breezy conditions will prevail today 
in the Post frontal air mass. Gusty northerly winds will be 
channeled down the northern valleys and into the Waterville 
Plateau and portions of the Columbia Basin this morning before 
diminishing later this afternoon. The surface pressure gradient 
will relax as surface high pressure rebuilds over the region. Last 
nights passing cold front brought little moisture to the forecast 
area so relative humidity this afternoon will dip into the teens 
across most of the northern valleys and into the basin. There is 
some concern that the elevated winds will overlap the low rhs 
briefly this afternoon for the Okanogan Valley, Waterville Plateau 
and portions of the Upper Basin. Confidence is low since by the 
time rhs hit minimums for the day, upslope southerly flow will be 
at odds with the northerly synoptic flow, resulting in lower wind 
speeds. After sunset, winds will diminish further and rhs will 
start to recover. Temperatures today will be a bit cooler than 
Friday but still above seasonal normals. Overnight temperatures 
will also remain on the mild side. /Kelch 




Sunday through Sat...upper short-wave ridging over a northward- 
surging thermal ridge Sunday through tues will help to produce 
well above normal high temperatures in the upper 60s and 70s for 
most towns. Following this is the most uncertain part of the fcst 
as an approaching north-south shearing upper trough reaches the 
pac NW coast Wed...then moves inland the rest of the work week. 
Again...there are still big enough inconsistencies in timing, position 
and evolution of the slow-moving frontal boundary model guidance 
has moving over ern WA and north Idaho that the most prudent approach 
was to not make big changes to the fcst, but simply trend toward a 
wetter and cooler scenario...again...starting late tues nt and 
Wed. The biggest difference between the GFS and the somewhat more 
preferred European model (ecmwf) (or rather the ensemble mean), is that all of ern 
WA and north Idaho is under the threat of widespread pcpn with the 
slower and more sheared character and track of the frontal system 
across the region. The GFS is much drier across the upper Columbia 
Basin, which is not preferred. The best agreement is that the NE 
WA mtns and the Idaho Panhandle will still see the most pcpn... 
roughly around one half inch by Sat. Snow levels will remain high 
enough to not pose a threat to passes. Thunder is not out of the 
question tues nt through Sat for all zones. Bz 


&& 


Aviation... 
18z tafs: mostly clear skies and good visibilities will prevail at 
the airports in eastern Washington and north Idaho today and 
tomorrow. Strong upper level high pressure will be the predominant 
weather feature the next couple of days. A northerly pressure 
gradient will persist through the afternoon and weaken this 
evening leading to light and variable winds overnight. /Gkoch 






&& 


Preliminary point temps/pops... 
Spokane 66 40 66 43 71 46 / 0 0 0 0 0 0 
Coeur D'Alene 65 36 66 39 70 42 / 0 0 0 0 0 0 
Pullman 64 39 65 40 69 41 / 0 0 0 0 0 0 
Lewiston 70 42 69 44 73 46 / 0 0 0 0 0 0 
Colville 68 38 69 41 73 41 / 0 0 0 0 0 0 
Sandpoint 64 34 63 36 69 36 / 0 0 0 0 0 0 
Kellogg 64 35 64 38 68 40 / 10 0 0 0 0 0 
Moses Lake 72 40 71 41 76 45 / 0 0 0 0 0 0 
Wenatchee 71 46 72 48 77 51 / 0 0 0 0 0 0 
Omak 70 40 72 43 76 44 / 0 0 0 0 0 0 


&& 


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


$$ 



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