Climate averages 1991–2020
Spokane weather
in May.
A mild, moderately wet month: the 5th warmest and the joint 5th driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
May is a mild month in Spokane: daytime highs average 19.9°C and nights cool to about 7.8°C. By daytime temperature it is the 5th warmest of the 12 months.
Expect about 46 mm of rain on roughly 8 days, which makes May a moderately wet month (the joint 5th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 15 h 06 min on an average May day.
The nearest other city in this atlas is Spokane Valley (14 km away). In May its highs average 19.2°C, 0.7°C cooler than Spokane, with 51 mm of rain.
Among the 498 cities listed in the United States, Spokane ranks joint 384th of 498 for the warmest May highs and 140th of 498 for the driest May (rainfall, lowest first). The mean May high of those 498 cities is 23.8°C; Spokane is 3.9°C cooler than that mean.
From May to June, average highs rise by 3.9°C to 23.8°C, and monthly rainfall falls from 46 mm to 33 mm.
The annual picture
May in context
Monthly precipitation
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Spokane climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 2.2°C-4.6°C | -4.6°C | 69 | 12.7 | 8.99 h |
| February | 5.0°C-3.6°C | -3.6°C | 49 | 10.0 | 10.210 h |
| March | 9.7°C-0.6°C | -0.6°C | 63 | 12.0 | 11.912 h |
| April | 14.3°C3.0°C | 3.0°C | 50 | 9.8 | 13.614 h |
| May, selected | 19.9°C7.8°C | 7.8°C | 46 | 8.0 | 15.115 h |
| June | 23.8°C11.6°C | 11.6°C | 33 | 6.0 | 15.916 h |
| July | 29.7°C16.0°C | 16.0°C | 13 | 2.7 | 15.616 h |
| August | 29.3°C15.7°C | 15.7°C | 12 | 2.3 | 14.314 h |
| September | 23.7°C11.0°C | 11.0°C | 19 | 4.2 | 12.613 h |
| October | 15.1°C4.9°C | 4.9°C | 46 | 7.9 | 10.911 h |
| November | 6.8°C-0.5°C | -0.5°C | 73 | 12.6 | 9.49 h |
| December | 1.9°C-4.1°C | -4.1°C | 78 | 12.3 | 8.59 h |
Precipitation (rain or snow, as water) is the average of the 30 separate monthly totals. A wet day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
May in nearby cities
- Spokane Valley in MayUnited States · 14 kmHigh 19.2°C · Low 7.0°C · 51 mm rain
- Tri-Cities in MayUnited States · 207 kmHigh 25.0°C · Low 11.5°C · 18 mm rain
- Kennewick in MayUnited States · 207 kmHigh 24.8°C · Low 11.4°C · 18 mm rain
- Yakima in MayUnited States · 261 kmHigh 21.4°C · Low 7.8°C · 18 mm rain
- Missoula in MayUnited States · 274 kmHigh 17.9°C · Low 6.3°C · 56 mm rain
- Kelowna in MayCanada · 290 kmHigh 19.9°C · Low 8.5°C · 51 mm rain
- Bellevue in MayUnited States · 358 kmHigh 17.3°C · Low 8.1°C · 76 mm rain
- Kirkland in MayUnited States · 358 kmHigh 16.8°C · Low 7.9°C · 80 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Spokane) is explained once on the Spokane year overview and on the Sources, method and limits page.