Charleston, West Virginia Climate by Month
Charleston, West Virginia, United States
Hot summers and cold winters, with rain spread through the year.
The climate in Charleston is one of hot summers and cold winters, with rain spread through the year. July is the warmest month, with highs around 87°F (31°C); January is the coolest at 44°F (7°C), and nights dip to 25°F (-4°C). About 45 in (1139 mm) of rain falls in a typical year, with no clear rainy season.
- Warmest month
- 87°F(31°C)
- Average high, July
- Coldest nights
- 25°F(-4°C)
- Average low, January
- Rain per year
- 45 in(1139 mm)
- No clear rainy season
- Humidity
- 68%
- Sunniest: June
Best and worst months in Charleston
Best for weatherThe most comfortable weather comes in May, September and October, with highs around 76°F (24°C) and about 3.6 in (93 mm) of rain a month.
Least pleasantDecember and January are the least pleasant; January is the coldest, with highs of only 44°F (7°C).
Comfort combines how close the afternoon high is to 75°F (24°C) with how much rain falls and how humid it is. See where the weather is best in May.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
Charleston weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 44°F(7°C) | 25°F(-4°C) | 3.3 in(83 mm) | 74% | 1.8 |
| FebFebruary | 48°F(9°C) | 28°F(-2°C) | 3.1 in(80 mm) | 64% | 2.5 |
| MarMarch | 57°F(14°C) | 34°F(1°C) | 3.8 in(96 mm) | 58% | 3.5 |
| AprApril | 69°F(21°C) | 42°F(6°C) | 3.8 in(96 mm) | 59% | 4.6 |
| MayMayBest | 77°F(25°C) | 52°F(11°C) | 4.4 in(112 mm) | 67% | 5.3 |
| JunJune | 84°F(29°C) | 61°F(16°C) | 4.3 in(108 mm) | 70% | 5.8 |
| JulJuly | 87°F(31°C) | 65°F(18°C) | 5.3 in(135 mm) | 72% | 5.6 |
| AugAugust | 86°F(30°C) | 64°F(18°C) | 3.9 in(100 mm) | 72% | 5.3 |
| SepSeptemberBest | 80°F(27°C) | 57°F(14°C) | 3.8 in(97 mm) | 67% | 4.4 |
| OctOctoberBest | 69°F(21°C) | 45°F(7°C) | 2.7 in(69 mm) | 69% | 3.2 |
| NovNovember | 58°F(14°C) | 34°F(1°C) | 3.0 in(75 mm) | 67% | 2.1 |
| DecDecember | 47°F(8°C) | 28°F(-2°C) | 3.5 in(88 mm) | 78% | 1.6 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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