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Weather & Climate
Maple Valley, Washington, United States
Overview
Climate data and monthly weather averages for Maple Valley.
Key Metrics
Annual Avg
8.5°C
Summer Avg
15.8°C
Winter Avg
1.5°C
Record High
37.8°C
Record Low
-19.7°C
Annual Precipitation
1736.3 mm
Avg Humidity
84%
Summer Humidity
78%
Winter Humidity
91%
Monthly Averages
| Month | High (°C) | Avg (°C) | Low (°C) | Rain (mm) | Humidity (%) | Sunshine (h) | Wind (kph) |
|---|---|---|---|---|---|---|---|
| Jan | 18.4° | 1.6° | -16.8° | 252 | 92% | 32 | 25 |
| Feb | 15.8° | 1.9° | -14.7° | 161.6 | 89% | 54 | 25 |
| Mar | 20.7° | 4.1° | -10.6° | 193.8 | 87% | 88 | 22 |
| Apr | 27.8° | 6.9° | -6.2° | 133.8 | 83% | 125 | 23.6 |
| May | 32° | 11° | -1.1° | 100.8 | 81% | 163 | 18.7 |
| Jun | 35.1° | 13.4° | 2.5° | 78.3 | 81% | 172 | 18.8 |
| Jul | 37.8° | 16.8° | 6.2° | 27.3 | 78% | 196 | 16.8 |
| Aug | 37.5° | 17.1° | 5.6° | 39.4 | 76% | 168 | 22.2 |
| Sep | 33.9° | 14.1° | 0.6° | 79.2 | 77% | 117 | 18.7 |
| Oct | 27.6° | 9° | -5.1° | 178.6 | 83% | 71 | 23.3 |
| Nov | 19° | 4.3° | -14.2° | 256.2 | 90% | 37 | 26.8 |
| Dec | 14° | 1° | -19.7° | 235.3 | 92% | 26 | 33 |
Frequently Asked Questions
Sources: NASA POWER · Last updated: 2025
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