Get the low down on the current conditions
Spokane weather, especially during the winter, can be unpredictable. Storm systems spinning out of the Pacific Ocean hit the Cascade Mountains to the East of Spokane. As the warm moist air hits the Cascades it expands and cools and then when it reaches it's dew point the moisture gets queezed out in the form of rain or snow. When the air then descends on the eastern slope most of it's moisture has been lost as it makes it's way to eastern Washington.
This shadow of dryness caused by the Cascade Range is called a "rain shadow" and causes the weather in eastern Washington to be dry for much of the year. The good thing about this is that during the winter months the air is cold but it is much more bearable because of the low humidity.
A good way to predict the weather around eastern Washington is to look at the jet stream. If the jet stream sags to the south of Spokane (as shown below) then you can count on cold windy weather because this condition allows cold air to the north to invade the area.
Here is a list of home weather stations around Spokane that you can access to get a local perspective on the current weather conditions in Spokane.
A friend of mine used to say that Spokane weather is just an average of extremes. It's hard to argue the point. Here’s my break down by season (your mileage may vary). Click on the links for a more in depth weather breakdown for each month.
October and November: The days are cool, 40's and 50's, and the nights start getting down to freezing. The autumn leaves are beautiful. We usually get our first snow by Thanksgiving. The Ski resort owners love it when we get that first snow!
December and January: We love a white Christmas and the weather in Spokane usually obliges. Around the end of January though most people are ready for spring.
February: You never know what to expect in February. It's really a transitional month as far as the weather is concerned. You could see rain or snow in the valleys but in the mountains you can count on snow. For my money, the best skiing is in February.
March and April: You’ve heard the expression, “If you don’t like the weather, just wait 5 minutes…” That pretty much sums it up. The temperature is getting into the 40’s and 50’s but the nights can still get down to freezing.
May and June: Ah, spring is finally here. The annual Bloomsday run is held the first Sunday in May and I can remember standing in the cue before the start of the race as the snow was falling so plan accordingly.
July and August: The average temps are in the 80's and we often get a week or two of 90º+ weather. This is the time to head to the lake and cool off.
September: For me, the best month is September. The days are not too hot and the nights are not too cold and there is hardly ever any rain. The leaves are just starting to turn and you can just catch the faint smell of fall in the air.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg High | 34º | 40º | 47º | 57º | 65º | 74º | 84º | 82º | 72º | 58º | 41º | 34º |
| Avg Low | 20º | 25º | 28º | 34º | 41º | 48º | 54º | 54º | 45º | 36º | 28º | 21º |
| Mean | 27º | 34º | 38º | 46º | 54º | 62º | 68º | 68º | 58º | 47º | 35º | 28º |
| Avg Precip | 2.0" | 1.5" | 1.5" | 1.3" | 1.4" | 1.3" | 0.7" | 0.7" | 0.7" | 1.0" | 2.3" | 2.4" |