Climate guideThirty-year normals for Pullman, Washington
Pullman climate by month
Warm, dry-summer continental · DsbBest Jun–Jul · Sep
Annual mean49°day and night
Seasonal swing37°warmest vs coolest
Precipitation20.2 in134 wet days a year
46.73° N, 117.18° WElevation 2,352 ftUTC−7 · Pacific Daylight Time
When to goPullman · weather score
Best timeJun–Jul · Sep
October: high / low60° / 37°
iSummary
What the weather is like
Pullman has a warm, dry-summer continental climate (Köppen Dsb): dry summers and cold winters.
The warmest month is August, when afternoons average 85° and nights 51°. December is the coolest month, with highs of 37° and lows of 26°. The difference between the warmest and the coolest month is about 37°, a large swing typical of continental interiors.
About 20.2 in of precipitation falls in an average year. January is the wettest month (2.3 in, 16 wet days) and July the driest (0.6 in, 3 wet days). Cloud cover ranges from 16% in July to 48% in January.
Compared with Washington, the capital, Pullman is 1.3° cooler on a August afternoon and receives less precipitation over the year.
Year in figures
- Hottest afternoons
- 85° · August
- Coldest nights
- 26° · December
- Wettest month
- January
- Driest month
- July
- Clearest skies
- July · 16% cloud
- Longest day
- 15 h 50 min
- Shortest day
- 8 h 34 min
iiCharts
Twelve months at a glance
Temperature and precipitation
Daily high/low range bars, monthly precipitation columnsTemperature curve
Average high, lowDaylight
Hours between sunrise and sunset on the 15th of each monthiiiData table
Climate normals month by month
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Average high | 38° | 42° | 50° | 58° | 67° | 73° | 84° | 85° | 76° | 60° | 46° | 37° |
| Average low | 26° | 28° | 32° | 36° | 42° | 47° | 51° | 51° | 45° | 37° | 31° | 26° |
| Precipitation | 2.3 in | 1.8 in | 2.1 in | 1.8 in | 1.9 in | 1.5 in | 0.6 in | 0.6 in | 0.9 in | 1.6 in | 2.6 in | 2.4 in |
| Wet days (≥1 mm) | 16.2 | 13.2 | 16 | 13.2 | 12.4 | 9.1 | 3.2 | 3.8 | 5.2 | 10.4 | 15.2 | 15.9 |
| Cloud cover | 48% | 42% | 45% | 42% | 37% | 30% | 16% | 17% | 21% | 32% | 46% | 46% |
| Daylight | 8h 58 | 10h 20 | 11h 52 | 13h 35 | 15h 02 | 15h 50 | 15h 29 | 14h 13 | 12h 35 | 10h 56 | 9h 24 | 8h 34 |
| Month score | 18 | 22 | 19 | 44 | 68 | 79 | 76 | 72 | 88 | 63 | 18 | 18 |
ivMonth by month
Pullman in every month
January18
38° / 26°
2.3 in · 16.2 wet days
February22
42° / 28°
1.8 in · 13.2 wet days
March19
50° / 32°
2.1 in · 16 wet days
April44
58° / 36°
1.8 in · 13.2 wet days
May68
67° / 42°
1.9 in · 12.4 wet days
June79
73° / 47°
1.5 in · 9.1 wet days
July76
84° / 51°
0.6 in · 3.2 wet days
August72
85° / 51°
0.6 in · 3.8 wet days
September88
76° / 45°
0.9 in · 5.2 wet days
October63
60° / 37°
1.6 in · 10.4 wet days
November18
46° / 31°
2.6 in · 15.2 wet days
December18
37° / 26°
2.4 in · 15.9 wet days