Dover, New Hampshire Climate by Month
Dover, New Hampshire, United States
Warm summers and freezing winters, with rain spread through the year.
Dover has warm summers and freezing winters, with rain spread through the year. Afternoon highs range from 34°F (1°C) in January to 83°F (28°C) in July, and January nights average 15°F (-9°C). About 44 in (1106 mm) of rain falls in a typical year, with no clear rainy season.
- Warmest month
- 83°F(28°C)
- Average high, July
- Coldest nights
- 15°F(-9°C)
- Average low, January
- Rain per year
- 44 in(1106 mm)
- No clear rainy season
- Humidity
- 68%
- Sunniest: July
Best and worst months in Dover
Best for weatherThe most comfortable weather comes in June and September, with highs around 76°F (24°C) and about 3.5 in (88 mm) of rain a month.
Least pleasantJanuary is the least pleasant month: it's the coldest, with highs of only 34°F (1°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 June.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
Dover weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 34°F(1°C) | 15°F(-9°C) | 3.0 in(77 mm) | 67% | 1.6 |
| FebFebruary | 37°F(3°C) | 17°F(-9°C) | 3.0 in(77 mm) | 61% | 2.5 |
| MarMarch | 45°F(7°C) | 25°F(-4°C) | 3.8 in(97 mm) | 58% | 3.5 |
| AprApril | 57°F(14°C) | 35°F(2°C) | 4.4 in(111 mm) | 57% | 4.6 |
| MayMay | 68°F(20°C) | 45°F(7°C) | 3.3 in(84 mm) | 64% | 5.2 |
| JunJuneBest | 77°F(25°C) | 54°F(12°C) | 3.6 in(91 mm) | 70% | 5.6 |
| JulJuly | 83°F(28°C) | 60°F(15°C) | 3.2 in(82 mm) | 69% | 5.7 |
| AugAugust | 81°F(27°C) | 58°F(15°C) | 3.2 in(81 mm) | 73% | 5.2 |
| SepSeptemberBest | 74°F(23°C) | 51°F(10°C) | 3.3 in(85 mm) | 79% | 4.0 |
| OctOctober | 62°F(17°C) | 39°F(4°C) | 4.6 in(117 mm) | 72% | 2.5 |
| NovNovember | 50°F(10°C) | 31°F(-1°C) | 4.0 in(101 mm) | 71% | 1.7 |
| DecDecember | 39°F(4°C) | 22°F(-6°C) | 4.1 in(103 mm) | 70% | 1.3 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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