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Weather & Climate
Washington County, Maine, United States
Overview
Available climate summaries for Washington County. Origins and reference periods are unverified; stored values may include AI estimates. Treat these as estimates until independently verified.
Key Metrics
Annual Avg
6.5°C
Summer Avg
17.6°C
Winter Avg
-5.4°C
Record High
31.5°C
Record Low
-29.5°C
Annual Precipitation
1279 mm
Avg Humidity
86%
Summer Humidity
84%
Winter Humidity
91%
Monthly Averages
| Month | High (°C) | Avg (°C) | Low (°C) | Rain (mm) | Humidity (%) | Sunshine (h) | Wind (kph) |
|---|---|---|---|---|---|---|---|
| Jan | 12.7° | -7.1° | -29.5° | 90.8 | 92% | 47 | 44.8 |
| Feb | 10.7° | -6° | -29.4° | 86.5 | 91% | 67 | 40.9 |
| Mar | 21.8° | -1.4° | -23.6° | 99.5 | 84% | 112 | 40.2 |
| Apr | 21.4° | 4.8° | -9.7° | 102.6 | 81% | 140 | 37.3 |
| May | 27.2° | 10.5° | -1.1° | 102 | 82% | 163 | 30 |
| Jun | 30.8° | 15.4° | 3.7° | 108.3 | 83% | 172 | 24.2 |
| Jul | 31.5° | 18.9° | 9.2° | 89 | 84% | 181 | 41.4 |
| Aug | 30.6° | 18.5° | 8.3° | 88 | 84% | 161 | 31 |
| Sep | 31.5° | 14.9° | 2.3° | 95.7 | 84% | 127 | 30.1 |
| Oct | 25.6° | 9.1° | -4.4° | 142.9 | 85% | 84 | 36.5 |
| Nov | 17.5° | 3° | -14.1° | 132.3 | 87% | 49 | 34.9 |
| Dec | 14.4° | -3° | -25° | 141.4 | 90% | 37 | 41.8 |
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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