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Weather & Climate
Alderton, Washington, United States
Overview
Available climate summaries for Alderton. Origins and reference periods are unverified; stored values may include AI estimates. Treat these as estimates until independently verified.
Key Metrics
Annual Avg
9.3°C
Summer Avg
16.2°C
Winter Avg
2.9°C
Record High
37.9°C
Record Low
-14.9°C
Annual Precipitation
1522.4 mm
Avg Humidity
85%
Summer Humidity
78%
Winter Humidity
92%
Monthly Averages
| Month | High (°C) | Avg (°C) | Low (°C) | Rain (mm) | Humidity (%) | Sunshine (h) | Wind (kph) |
|---|---|---|---|---|---|---|---|
| Jan | 17.3° | 3.1° | -13.1° | 223.5 | 93% | 32 | 22.9 |
| Feb | 16.4° | 3.2° | -11.9° | 138 | 90% | 54 | 26.9 |
| Mar | 20.6° | 5.2° | -6.3° | 173.3 | 88% | 88 | 23.5 |
| Apr | 29.2° | 7.7° | -4° | 117.6 | 84% | 125 | 24.5 |
| May | 32.5° | 11.5° | -0.8° | 84 | 82% | 163 | 21.7 |
| Jun | 34.6° | 13.9° | 4.2° | 60.6 | 82% | 172 | 20 |
| Jul | 37.9° | 17.2° | 7° | 19.2 | 78% | 196 | 14.9 |
| Aug | 34.5° | 17.6° | 6.8° | 31.6 | 74% | 168 | 26 |
| Sep | 34.3° | 14.9° | 1° | 68.7 | 76% | 117 | 22.4 |
| Oct | 27.4° | 9.8° | -3.9° | 154.4 | 84% | 71 | 25.6 |
| Nov | 19.1° | 5.4° | -12.2° | 229.8 | 91% | 37 | 29.6 |
| Dec | 14° | 2.4° | -14.9° | 221.7 | 93% | 26 | 32.9 |
Data sources
Estimates and unverified origins
Oyster List climate data - Climate origins are unverified. Available methods include historical APIs and AI estimates; stored rows do not identify the original dataset, reference period, or model for each value. Treat these summaries as estimates until independently verified. Record updated 2026-03-22.
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