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Weather & Climate
Grafton, West Virginia, United States
Overview
Climate data and monthly weather averages for Grafton.
Key Metrics
Annual Avg
10.7°C
Summer Avg
21.7°C
Winter Avg
-0.9°C
Record High
38°C
Record Low
-22.2°C
Annual Precipitation
1135.4 mm
Avg Humidity
79%
Summer Humidity
74%
Winter Humidity
87%
Monthly Averages
| Month | High (°C) | Avg (°C) | Low (°C) | Rain (mm) | Humidity (%) | Sunshine (h) | Wind (kph) |
|---|---|---|---|---|---|---|---|
| Jan | 20.3° | -2.2° | -22.2° | 83.4 | 87% | 51 | 31.2 |
| Feb | 21.7° | -1° | -20.4° | 81.2 | 86% | 69 | 34.2 |
| Mar | 26.9° | 3.9° | -19.8° | 87.1 | 82% | 110 | 30.2 |
| Apr | 29.4° | 10.4° | -6.5° | 99.9 | 78% | 142 | 32.1 |
| May | 33.4° | 15.9° | -4.6° | 115.9 | 80% | 168 | 22 |
| Jun | 34.7° | 20.2° | 2.8° | 114.9 | 78% | 180 | 17 |
| Jul | 38° | 22.5° | 8.5° | 119.4 | 75% | 181 | 18.5 |
| Aug | 35.9° | 22.3° | 8.1° | 88.4 | 70% | 166 | 15.6 |
| Sep | 35.4° | 18.8° | 2.9° | 86.4 | 69% | 133 | 20 |
| Oct | 32.9° | 11.8° | -4.7° | 91.1 | 75% | 95 | 21 |
| Nov | 25.1° | 5.3° | -13.2° | 74.4 | 80% | 65 | 24.2 |
| Dec | 21.6° | 0.4° | -16.3° | 93.3 | 87% | 45 | 27.3 |
Frequently Asked Questions
Sources: NASA POWER · Last updated: 2025
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