Pullman, Washington Weather
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Climate of Pullman: monthly averages
Based on 25 years of satellite and reanalysis data (2001-2025), July is usually the hottest month in Pullman, with average daytime highs around 30°C. January is the coolest, when nights typically fall to about -5°C and frost is possible on the coldest nights. That is a wide yearly range of roughly 35°C, so the seasons feel very different from each other.
The area receives about 670 mm of rain in a typical year. Rainfall is modest in every month; December is the wettest at about 86 mm. The driest stretch is July to August, with under 20 mm a month.
For outdoor plans and travel, May to September usually offer the most comfortable weather in Pullman, with mild days and relatively little rain.
| Month | Avg high | Avg low | Rainfall | Humidity |
|---|---|---|---|---|
| Jan | 3° | -5° | 82 mm | 89% |
| Feb | 5° | -4° | 63 mm | 83% |
| Mar | 10° | -1° | 79 mm | 76% |
| Apr | 14° | 2° | 61 mm | 69% |
| May | 19° | 7° | 62 mm | 65% |
| Jun | 23° | 11° | 50 mm | 62% |
| Jul | 30° | 15° | 12 mm | 49% |
| Aug | 29° | 14° | 19 mm | 46% |
| Sep | 24° | 10° | 23 mm | 50% |
| Oct | 15° | 4° | 53 mm | 64% |
| Nov | 8° | -2° | 75 mm | 78% |
| Dec | 2° | -5° | 86 mm | 87% |
Source: NASA POWER (MERRA-2 reanalysis), averaged over the roughly 50 km grid area around Pullman. Values describe typical conditions, not a forecast.
About Pullman weather
Pullman is set in Washington's stark east–west divide — mild, wet Pacific coast and Puget Sound versus a much drier, more continental interior, about 105 km south of Spokane. Summers bring mild, dry summers (June–September) west of the Cascades. The year winds down with mild, rainy winters (November–February) in the west, colder with more snow east of the mountains. This page shows live, auto-refreshing weather for Pullman: current conditions, an hourly breakdown, a 16-day outlook, a date-lookup tool for any past or future date, and real-time air quality, sourced from Open-Meteo. Local timezone: America/Los_Angeles.
Frequently asked questions
Pullman is about 105 km south of Spokane, in Washington.
Pullman sees mild, rainy winters (November–February) in the west, colder with more snow east of the mountains.
The live current conditions, hourly forecast and 16-day outlook above are pulled in real time for Pullman's exact coordinates. No fixed schedule, the page updates whenever you load it.
July is usually the hottest month in Pullman, with average daytime highs of about 30°C and nights around 15°C.
The coldest nights come in January, when the average low is about -5°C and daytime highs reach around 3°C. Frost is possible on clear, calm nights.
Pullman receives about 670 mm of rain in a typical year. December is the wettest month at roughly 86 mm; no month averages more than 100 mm.
May to September usually offer the most comfortable weather in Pullman, with mild daytime temperatures and little rain.
In November Pullman typically sees daytime highs near 8°C and lows near -2°C, with about 75 mm of rain over the month and average humidity around 78%. Check the live forecast above for this week's actual conditions.
Up to 16 days ahead using the extended forecast and date picker above; further-out or historical dates use the same date lookup tool.
Live temperature for Pullman is shown at the top of this page and refreshes automatically — see the hourly breakdown below for how it changes through the day.
Pullman's day-to-day weather follows the broader pattern of Washington described above. See the hourly weather forecast or the air quality index for more detail.