Spokane climate
Spokane (Washington, United States) has a hot-summer continental (dry summer) climate (Köppen Dsa). The average temperature over the year is 9 °C49 °F, and about 552 mm22 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Spokane climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin | Frost days |
|---|---|---|---|---|---|
| Jan | 235 | −523 | −229 | 722.8 | 29 |
| Feb | 439 | −424 | 032 | 451.8 | 26 |
| Mar | 949 | −130 | 439 | 642.5 | 23 |
| Apr | 1458 | 236 | 847 | 441.7 | 12 |
| May | 2068 | 745 | 1457 | 491.9 | 2 |
| Jun | 2475 | 1152 | 1864 | 401.6 | 0 |
| Jul | 3087 | 1559 | 2373 | 110.4 | 0 |
| Aug | 2985 | 1458 | 2272 | 140.5 | 0 |
| Sep | 2475 | 1049 | 1762 | 200.8 | 0 |
| Oct | 1559 | 438 | 948 | 481.9 | 6 |
| Nov | 744 | −130 | 337 | 692.7 | 21 |
| Dec | 134 | −523 | −228 | 773.0 | 28 |
| Year | 3087 | −523 | 949 | 55222 | 146 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total. Frost days are for the whole grid cell.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 93% | 79% | 1.1 | 8:49 |
| Feb | 86% | 72% | 2.0 | 10:10 |
| Mar | 79% | 74% | 3.1 | 11:45 |
| Apr | 69% | 69% | 4.6 | 13:34 |
| May | 64% | 62% | 5.9 | 15:07 |
| Jun | 60% | 57% | 6.5 | 15:58 |
| Jul | 50% | 30% | 7.4 | 15:37 |
| Aug | 48% | 35% | 6.1 | 14:15 |
| Sep | 54% | 46% | 4.4 | 12:29 |
| Oct | 68% | 61% | 2.6 | 10:45 |
| Nov | 83% | 76% | 1.3 | 9:12 |
| Dec | 91% | 79% | 0.9 | 8:26 |
Humid. = average relative humidity at 2 m; cloud = average cloud amount; solar = average daily solar energy reaching the ground in kWh/m² (all-sky); daylight in hours:minutes, calculated for the 15th of each month.
What the climate of Spokane is like
The warmest month is July, with an average high of 30 °C87 °F and a low of 15 °C59 °F. The coldest is December, when highs average 1 °C34 °F and lows −5 °C23 °F. Seasons are strongly marked: the warmest month is on average 24.6 °C44.4 °F warmer than the coldest.
Annual precipitation is moderate at about 552 mm22 in. The wettest three-month stretch is November–January, which brings 39% of the annual total. Months with less than 20 mm0.8 in on average: July and August. The wettest month is December (77 mm3.0 in), the driest is July (11 mm0.4 in).
Relative humidity ranges from 48% in August to 93% in January. The clearest skies (lowest average cloud amount, 30%) are typical of July. Average wind speed near the ground ranges from 6 km/h (4 mph) in August to 8 km/h (5 mph) in March. Daylight lasts from about 8.4 hours in December to 16.0 hours in June.
A lasting snow cover is typical in November–February, when the average snow depth in the reanalysis exceeds 10 cm (deepest in January, about 17 cm).
Best time to visit Spokane
Based on these averages, the most comfortable months for sightseeing and outdoor activities are May and June and August and September: average highs of 20 °C68 °F to 29 °C85 °F with 14 mm0.5 in to 49 mm1.9 in of precipitation per month.
The most challenging month is December, which is cold, with average highs of 1 °C34 °F.
Comfort score: months are ranked by how close they come to an average high of 21–28 °C (70–82 °F), lows above 5 °C (41 °F), little precipitation and moderate humidity. The best-ranked months of each place are recommended, even where none meets all of these. These are general rules of thumb applied to long-term averages.
What to pack for Spokane
- Winter (December–February) — highs 134 to 4 °C39 °F, lows −523 to −4 °C24 °F, about 65 mm2.5 in of precipitation a month. Pack a winter coat, hat, gloves and warm, non-slip boots and shoes with good grip, as frost is common.
- Spring (March–May) — highs 949 to 20 °C68 °F, lows −130 to 7 °C45 °F, about 52 mm2.1 in of precipitation a month. Pack long sleeves, a sweater and a medium jacket and an extra layer for the cooler mornings and evenings.
- Summer (June–August) — highs 2475 to 30 °C87 °F, lows 1152 to 15 °C59 °F, about 22 mm0.9 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses and an extra layer for the cooler mornings and evenings.
- Autumn (September–November) — highs 744 to 24 °C75 °F, lows −130 to 10 °C49 °F, about 46 mm1.8 in of precipitation a month. Pack long sleeves, a sweater and a medium jacket and an extra layer for the cooler mornings and evenings.
How Spokane compares
Compared with Tri-Cities, about 207 km to the southwest, Spokane is on average 4.2 °C7.6 °F cooler and receives 99% more precipitation (552 mm22 in vs 278 mm11 in). The difference is largest in February (4.9 °C8.8 °F cooler).
Of the 222 places in the United States covered by World Climates, Spokane is the 205th warmest by annual mean temperature and the 158th wettest by annual precipitation. See all of them on the United States climate page.
Places in other countries with the most similar temperature and rainfall pattern: Kelowna (Canada, Dfa), Kamloops (Canada, Dfb) and Sivas (Turkey, Dsb).
Nearby places
- Tri-Cities 207 km · 14 °C57 °F · 278 mm11 in
- Kelowna 290 km · 9 °C49 °F · 451 mm18 in
- Everett 358 km · 11 °C52 °F · 1,253 mm49 in
- Seattle 367 km · 11 °C52 °F · 1,232 mm49 in
- Chilliwack 373 km · 11 °C51 °F · 1,815 mm71 in
- Abbotsford 389 km · 10 °C50 °F · 1,403 mm55 in
- Kamloops 395 km · 9 °C48 °F · 446 mm18 in
- Lethbridge 407 km · 7 °C44 °F · 492 mm19 in
Frequently asked questions
What is the warmest month in Spokane?
July is the warmest month in Spokane, with an average high of 30 °C (87 °F) and an average low of 15 °C (59 °F).
What is the coldest month in Spokane?
December is the coldest month, with an average high of 1 °C (34 °F) and an average low of -5 °C (23 °F).
When does it rain the most in Spokane?
December is the wettest month with about 77 mm (3.0 in) of precipitation; July is the driest with about 11 mm (0.4 in).
What is the best time to visit Spokane?
Judging by long-term averages, the most comfortable months are May and June and August and September.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.
The grid cell’s average elevation is 732 m, while Spokane lies at about 571 m. Temperatures on this page were therefore adjusted by +1 °C1.9 °F using the standard lapse rate of 6.5 °C per 1,000 m.