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Weather & Climate
Cosmopolis, Washington, United States
Overview
Climate data and monthly weather averages for Cosmopolis.
Key Metrics
Annual Avg
9.9°C
Summer Avg
15°C
Winter Avg
5°C
Record High
32.5°C
Record Low
-7.3°C
Annual Precipitation
1942.4 mm
Avg Humidity
88%
Summer Humidity
85%
Winter Humidity
92%
Monthly Averages
| Month | High (°C) | Avg (°C) | Low (°C) | Rain (mm) | Humidity (%) | Sunshine (h) | Wind (kph) |
|---|---|---|---|---|---|---|---|
| Jan | 14.1° | 5.1° | -6.5° | 307.2 | 93% | 34 | 30.7 |
| Feb | 15.3° | 5.2° | -7.3° | 169.1 | 90% | 55 | 33.5 |
| Mar | 19.7° | 6.6° | -2.7° | 229.7 | 89% | 89 | 32.3 |
| Apr | 24.8° | 8.4° | -0.8° | 142.5 | 85% | 125 | 30.6 |
| May | 28.7° | 11.4° | 1.2° | 82.8 | 84% | 162 | 32.1 |
| Jun | 31.1° | 13.6° | 5.6° | 53.4 | 84% | 172 | 24.1 |
| Jul | 32.2° | 15.6° | 7.4° | 22.9 | 85% | 197 | 18.8 |
| Aug | 32.5° | 15.7° | 7.5° | 36.9 | 86% | 168 | 30.7 |
| Sep | 31.4° | 14.2° | 4.2° | 81.6 | 87% | 121 | 29.2 |
| Oct | 24.2° | 10.6° | -2.3° | 203 | 90% | 75 | 33.2 |
| Nov | 18.1° | 7.2° | -6.2° | 312.6 | 92% | 39 | 38.3 |
| Dec | 14.2° | 4.7° | -7.3° | 300.7 | 93% | 28 | 40.8 |
Frequently Asked Questions
Sources: NASA POWER · Last updated: 2025
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