Chewelah, Washington Weather Conditions

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Current Conditions

  • 76°
  • Clear
  • Wind: West 9 mph
  • Humidity: 21%
  • Visibility: miles
  • Dew Point: 32°
  • Pressure: in.

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Next 12 Hours

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Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Monday
  • Clear
  • High: 76 °
  • Low: 40 °
  • Clear
  • Tuesday
  • Clear
  • High: 65 °
  • Low: 34 °
  • Clear
  • Wednesday
  • Clear
  • High: 64 °
  • Low: 36 °
  • Clear
  • Thursday
  • Partly Cloudy
  • High: 71 °
  • Low: 40 °
  • Partly Cloudy
  • Friday
  • Clear
  • High: 74 °
  • Low: 40 °
  • Clear

Forecast for Chewelah, Washington

Updated: 11:39 AM PDT on January 04, 2015

  • Monday

    Plentiful sunshine. High 76F. Winds S at 10 to 15 mph.

  • Monday Night

    Clear skies. Low near 40F. Winds S at 5 to 10 mph.

  • Tuesday

    Generally sunny. High near 65F. Winds SSW at 10 to 15 mph.

  • Tuesday Night

    Some clouds early will give way to generally clear conditions overnight. Low 34F. Winds SW at 5 to 10 mph.

  • Wednesday

    Generally sunny despite a few afternoon clouds. High 64F. Winds SW at 5 to 10 mph.

  • Wednesday Night

    Mainly clear early, then a few clouds later on. Low 36F. Winds light and variable.

  • Thursday

    Intervals of clouds and sunshine. High 71F. Winds N at 5 to 10 mph.

  • Thursday Night

    Clear. Low near 40F. Winds N at 5 to 10 mph.

  • Friday

    Except for a few afternoon clouds, mainly sunny. High 74F. Winds N at 5 to 10 mph.

  • Friday Night

    Mostly clear skies. Low around 40F. Winds NNE at 5 to 10 mph.

  • Saturday

    Mostly sunny skies. High 74F. Winds N at 5 to 10 mph.

  • Saturday Night

    A few clouds from time to time. Low 41F. Winds light and variable.

  • Sunday

    Showers in the morning, then clearing with ample sunshine in the afternoon. High 74F. Winds SW at 5 to 10 mph. Chance of rain 50%.

  • Sunday Night

    A few clouds overnight. Low 42F. Winds light and variable.

  • Monday

    Some sun in the morning with increasing clouds during the afternoon. High 73F. Winds S at 5 to 10 mph.

  • Monday Night

    Mostly cloudy. Low 42F. Winds light and variable.

  • Tuesday

    Considerable cloudiness. High 74F. Winds S at 5 to 10 mph.

  • Tuesday Night

    A few clouds. Low 42F. Winds light and variable.

  • Wednesday

    Partly cloudy. High around 75F. Winds S at 5 to 10 mph.

  • Wednesday Night

    Considerable cloudiness with occasional rain showers. Low 43F. Winds S at 5 to 10 mph. Chance of rain 60%.

  • Thursday

    Considerable cloudiness with occasional rain showers. High 74F. Winds SSW at 5 to 10 mph. Chance of rain 50%.

  • Thursday Night

    Mostly cloudy. Low 44F. Winds light and variable.

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NWS Forecaster Discussion

Area forecast discussion 
National Weather Service Spokane Washington 
232 PM PDT Monday may 4 2015 

a strong cold front is expected tonight with cooler and breezier 
weather in the forecast for Tuesday. Spotty showers will be 
possible Tuesday and Wednesday as well as a chance of thunderstorms 
on Wednesday. The weather will generally be dry and warm through 
the end of the workweek, except for a small chance of mountain 
showers over the Idaho Panhandle. Temperatures could moderate a 
bit by the weekend as another weak disturbance approaches the 
inland northwest. 


tonight through Tuesday night: a deep upper level low pressure 
system resides just off of Vancouver Island in the eastern 
Pacific. Swinging around the base of the low is a cold front with 
a clearly defined dry slot along the back edge of the front 
depicted on the water vapor satellite imagery. The cold front is 
expected to cross the Cascade mtns this evening and then push into 
the Idaho Panhandle tonight. Not much in the way of moisture will 
ride up with the front, but showers are expected in the Cascades 
and across the extreme southeast portion of the forecast area. 
Showers that develop across northeast or and into the southern and 
central Idaho Panhandle will tap into weak instability. It is enough 
instability that thunderstorms will be a possibility, but better 
chance will lie southeast of the region. 

Another impact from the cold front will be breezy winds overnight 
into Tuesday. A good amount of cold air advection with the front 
should prevent the boundary layer from decoupling completely. The 
strongest winds will be felt through the Cascade gaps with gusts 
to around 25-30 mph possible. Winds are expected to be less gusty 
of around 15-25 mph as they push across the basin. 

The upper level low will begin to split as it pushes across 
western Washington and into British Columbia on Tuesday. The southern branch of the low 
will move into southwestern Washington while the northern branch slides 
into southern British Columbia during the afternoon on Tuesday. This will place 
the cold pool aloft across the northwestern portion of the 
forecast area. This is where the best chance for showers and 
thunderstorms is expected, which will include the east slopes of 
the Cascades over to the northeast mtns. The Waterville Plateau 
and western portion of the basin will also see a chance for some 
showers and thunderstorms. Drier air across the southeastern 
portion of the forecast area will make it difficult for showers to 

Much cooler temperatures can be expected on Tuesday with highs 
dropping back down into the 60s. /Svh 

Wednesday...the models are in good agreement showing a deep low 
pressure system dropping out of b.C. Tuesday night and finally 
closing off over or/cal Wednesday night and Thursday. 500mb temps 
of -29c will slide slowly south through the inland northwest 
Tuesday through Wednesday. The cold pool will keep the atmosphere 
unstable enough to for widespread rain and mountain snow showers 
through Wednesday night. Afternoon surface heating will increase 
surface based and mid level cape, and with lapses rates increasing 
to 8c/km there will be a chance for afternoon and evening 
thunderstorms. The GFS/ec keep the thunderstorms across the 
western half of the forecast area, while the NAM looks like there 
could be thunderstorms just about anywhere in the warning area. 
Previous forecasts leaned in the direction of the NAM and see no 
good argument to change that thought. Then only thing that is 
really missing is a deep moisture source but the deep instability 
should overcome that. And while localized heavy rain is always 
possible under a heavy shower, quantitative precipitation forecast is generally under a tenth of 
an inch through this period. Temperatures on Wednesday will be the 
chilliest of the week and 3-5 degrees below average. Afternoon 
winds will not be as strong but still in the 5-15 mph range. 

Thursday through Saturday the models are in decent agreement. The 
closed low will continue to move south into southern cal/Nevada, 
meanwhile a low pressure system in the central Canadian plains 
will retrograde back towards the Continental Divide. This will put 
the inland northwest in between weather systems for a mainly dry 
forecast and a bit of a warming trend. Some showers were kept in 
the orographically favored Idaho Panhandle, but these should be 
very spotty. Temperatures will rebound by several degrees on 
Thursday and warm back up to near normal. Temperatures will 
then increase back into the mid 60s to mid 70s Friday and Saturday. 

Sunday and Monday another upper level low pressure system will 
move into the eastern Pacific off of the Washington coast. This 
where timing differences of the models increase. Southerly flow 
ahead of the upper low pressure system should tap into deeper sub- 
tropical moisture and increase the chances for showers both Sunday 
and Monday. Tobin 


18z tafs: VFR conditions are expected at all taf sites through 18z 
Tuesday. A cold front will sweep across the region during the 
evening hours. This will produce wind gusts of 25-30 kts at keat 
after 00z this afternoon. Breezy winds will then spread across the 
basin through the evening and reach kgeg, ksff, kcoe and kpuw 
between 05-08z. Showers ahead of the cold front will primarily 
remain southeast of kpuw. There is a small chance for thunderstorms 
near klws, but confidence is too low to include in the tafs. /Svh 


Preliminary point temps/pops... 
Spokane 41 61 36 60 39 66 / 0 0 10 30 20 10 
Coeur D'Alene 41 60 35 60 36 65 / 10 10 10 30 20 20 
Pullman 40 60 34 58 36 64 / 10 10 10 20 20 20 
Lewiston 48 66 39 64 41 69 / 20 10 10 20 20 20 
Colville 42 65 38 63 37 70 / 0 10 30 50 30 10 
Sandpoint 38 61 32 60 33 65 / 10 10 10 40 20 20 
Kellogg 41 59 35 58 36 62 / 20 30 10 30 20 20 
Moses Lake 41 66 38 65 39 72 / 0 0 20 20 10 0 
Wenatchee 46 64 43 64 42 73 / 0 10 30 30 10 10 
Omak 38 64 36 65 36 71 / 10 20 20 40 20 10 


Otx watches/warnings/advisories... 


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Air Pollution

Air Pollution Forecast for Spokane

Current Air Quality: Good Pollutant: PM10
Mon Air Quality: Good Pollutant: PM10
Mon Air Quality: Moderate Pollutant: OZONE
Tue Air Quality: Good Pollutant: PM10
Tue Air Quality: Good Pollutant: OZONE

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