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Weather & Climate
Thurmont, Maryland, United States
Overview
Climate data and monthly weather averages for Thurmont.
Key Metrics
Annual Avg
11.8°C
Summer Avg
23.6°C
Winter Avg
-0.4°C
Record High
39.6°C
Record Low
-23.2°C
Annual Precipitation
1123.6 mm
Avg Humidity
77%
Summer Humidity
70%
Winter Humidity
84%
Monthly Averages
| Month | High (°C) | Avg (°C) | Low (°C) | Rain (mm) | Humidity (%) | Sunshine (h) | Wind (kph) |
|---|---|---|---|---|---|---|---|
| Jan | 20° | -1.6° | -19.2° | 69.1 | 84% | 61 | 43.6 |
| Feb | 24.4° | -0.4° | -23.2° | 67.5 | 83% | 79 | 50.7 |
| Mar | 25.8° | 4.5° | -20.7° | 83.1 | 80% | 117 | 54.3 |
| Apr | 31.9° | 11.1° | -5.4° | 94.2 | 77% | 146 | 53.1 |
| May | 32.8° | 16.8° | -1.9° | 116.9 | 78% | 168 | 35.2 |
| Jun | 36.4° | 21.9° | 5.5° | 112.2 | 75% | 182 | 36.9 |
| Jul | 39.6° | 24.9° | 10.9° | 107 | 68% | 186 | 32.2 |
| Aug | 37.7° | 24.1° | 10.9° | 93.9 | 68% | 164 | 42.3 |
| Sep | 36.6° | 20.1° | 4.4° | 111.9 | 70% | 129 | 53.3 |
| Oct | 35° | 12.8° | -3.7° | 101.1 | 77% | 98 | 48.1 |
| Nov | 25.3° | 6.2° | -9.4° | 77.1 | 80% | 68 | 43.7 |
| Dec | 22.1° | 0.9° | -14.7° | 89.6 | 85% | 53 | 47.5 |
Frequently Asked Questions
Sources: NASA POWER · Last updated: 2025
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