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Weather & Climate
Charlestown, New Hampshire, United States
Overview
Available climate summaries for Charlestown. Origins and reference periods are unverified; stored values may include AI estimates. Treat these as estimates until independently verified.
Key Metrics
Annual Avg
7.1°C
Summer Avg
19.2°C
Winter Avg
-5.6°C
Record High
34.6°C
Record Low
-30.6°C
Annual Precipitation
1161.5 mm
Avg Humidity
83%
Summer Humidity
80%
Winter Humidity
90%
Monthly Averages
| Month | High (°C) | Avg (°C) | Low (°C) | Rain (mm) | Humidity (%) | Sunshine (h) | Wind (kph) |
|---|---|---|---|---|---|---|---|
| Jan | 16.6° | -7.1° | -30.6° | 70.7 | 91% | 50 | 30.9 |
| Feb | 19.6° | -6.1° | -29° | 74.2 | 91% | 70 | 35.7 |
| Mar | 22.9° | -1.3° | -27.1° | 84.6 | 85% | 114 | 32.7 |
| Apr | 28.5° | 5.8° | -13.1° | 91.2 | 78% | 137 | 27.1 |
| May | 29.2° | 12.6° | -3.1° | 94.5 | 78% | 162 | 23.3 |
| Jun | 30.6° | 17.5° | 1.4° | 118.8 | 80% | 169 | 18.8 |
| Jul | 33.6° | 20.4° | 7.8° | 107.3 | 80% | 181 | 15.4 |
| Aug | 34.6° | 19.6° | 6.8° | 104.2 | 79% | 161 | 22.1 |
| Sep | 33.3° | 15.8° | 0.7° | 99.6 | 78% | 125 | 22.4 |
| Oct | 26.8° | 8.9° | -8° | 124.9 | 81% | 80 | 26.6 |
| Nov | 21.8° | 2.4° | -20.3° | 86.7 | 83% | 52 | 24.6 |
| Dec | 19.1° | -3.5° | -26° | 104.8 | 89% | 38 | 27.8 |
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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