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Weather & Climate
Hillsborough County, New Hampshire, United States
Overview
Climate data and monthly weather averages for Hillsborough County.
Key Metrics
Annual Avg
7.7°C
Summer Avg
19.7°C
Winter Avg
-4.9°C
Record High
36.4°C
Record Low
-30.2°C
Annual Precipitation
1152.9 mm
Avg Humidity
82%
Summer Humidity
79%
Winter Humidity
89%
Monthly Averages
| Month | High (°C) | Avg (°C) | Low (°C) | Rain (mm) | Humidity (%) | Sunshine (h) | Wind (kph) |
|---|---|---|---|---|---|---|---|
| Jan | 17.1° | -6.5° | -29.8° | 69.8 | 90% | 57 | 28.5 |
| Feb | 19.5° | -5.5° | -30.2° | 77.6 | 90% | 74 | 34.3 |
| Mar | 23.8° | -0.7° | -27.1° | 90.2 | 84% | 114 | 35.1 |
| Apr | 29.9° | 6.3° | -11.2° | 96.3 | 78% | 142 | 26.2 |
| May | 29.7° | 12.9° | -3° | 93.6 | 78% | 164 | 22.5 |
| Jun | 34.5° | 17.9° | 2.5° | 114.6 | 79% | 172 | 18.1 |
| Jul | 34.9° | 21° | 8.6° | 100.4 | 79% | 185 | 15.6 |
| Aug | 36.4° | 20.3° | 7.3° | 98 | 78% | 165 | 23 |
| Sep | 35.2° | 16.4° | 1.6° | 93.3 | 77% | 128 | 22.8 |
| Oct | 28° | 9.5° | -7.9° | 124 | 80% | 87 | 26.7 |
| Nov | 22.7° | 3° | -18.4° | 89.4 | 82% | 59 | 24.6 |
| Dec | 19.3° | -2.8° | -26.2° | 105.7 | 88% | 46 | 27.3 |
Frequently Asked Questions
Sources: NASA POWER · Last updated: 2025
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