US Geography / US Weather / New Hampshire Weather / Portsmouth |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
| Avg. High | 34 | 36 | 44 | 55 | 66 | 76 | 81 | 78 | 71 | 61 | 48 | 37 |
| Avg. Low | 14 | 15 | 24 | 34 | 42 | 51 | 57 | 55 | 47 | 37 | 30 | 18 |
| Mean | 24 | 26 | 35 | 44 | 55 | 64 | 68 | 68 | 60 | 50 | 40 | 28 |
| Avg. Precip. | 3.8 in | 3.7 in | 3.8 in | 4.3 in | 3.5 in | 3.4 in | 3.3 in | 3.1 in | 3.4 in | 4.0 in | 5.1 in | 4.6 in |
Degrees in Fahrenheit
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