Get the app
Best time to visit · New Hampshire, United States
May and September are the best time to visit New Hampshire on the climate data: September scores 87/100, with highs around 74°F (23°C) and 3.7 in (93 mm) of rain. June – August and October are good shoulder-season months. The toughest months are December – February, mainly because of cool days.
Highs run from 30°F to 81°F across the year, and the yearly total is about 45.4 in (1153 mm) of rain and snow.
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high | 30°F-1°C | 33°F0°C | 42°F5°C | 56°F13°C | 67°F20°C | 76°F24°C | 81°F27°C | 80°F27°C | 74°F23°C | 60°F16°C | 47°F9°C | 36°F2°C |
| Avg low | 14°F-10°C | 15°F-9°C | 24°F-5°C | 35°F2°C | 47°F8°C | 56°F14°C | 62°F17°C | 61°F16°C | 53°F12°C | 42°F6°C | 31°F0°C | 22°F-6°C |
| Rain/snow | 2.8 in70 mm | 3.1 in78 mm | 3.5 in90 mm | 3.8 in96 mm | 3.7 in94 mm | 4.5 in115 mm | 3.9 in100 mm | 3.9 in98 mm | 3.7 in93 mm | 4.9 in124 mm | 3.5 in89 mm | 4.2 in106 mm |
| Humidity | 90% | 90% | 84% | 78% | 78% | 79% | 79% | 78% | 77% | 80% | 82% | 88% |
| Cloud | 65% | 63% | 62% | 64% | 67% | 64% | 57% | 55% | 51% | 62% | 64% | 68% |
| Comfort | 45 | 44 | 46 | 68 | 81 | 73 | 76 | 79 | 87 | 73 | 55 | 39 |
Source: NASA POWER (public domain), 2001–2025 monthly averages on a ~50 km satellite and reanalysis grid, so coasts and valleys can differ from what's shown. Temperatures were adjusted from the grid cell's ~259 m (850 ft) to New Hampshire's ~91 m (299 ft) elevation using the standard lapse rate of 6.5°C per 1,000 m. Precipitation includes snow as melted water; daylight is calculated from latitude. Check a forecast before you go.
The cold peaks here: highs of 30–36°F (-1–2°C), and nights reach 14°F (-10°C). It's the driest season, with only about 10.0 in (254 mm) of rain or snow, 22% of the year's total. December – February are cold enough for snow. It holds the toughest stretch on our comfort score (December – February), averaging 43/100.
Temperatures climb through the season, from 42°F highs in March to 67°F by May. About 11.0 in (280 mm) of rain or snow falls across these months, 24% of the year's total. March is cold enough for snow. May is among the best-scoring months (season average 65/100).
Peak warmth: highs of 76–81°F (24–27°C). It's the wettest season, with about 12.3 in (313 mm) of rain, 27% of the year's total. July & August feel humid, with humidity near 79%. June – August score well without being the very best (season average 76/100).
Temperatures slide from 74°F highs in September to 47°F by November. About 12.0 in (306 mm) of rain falls across these months, 27% of the year's total. Nights dip below freezing in November. September is among the best-scoring months (season average 72/100).
By comfort score: 4 Great, 3 Good, 3 Fair and 2 Tough. Great months: May and July – September. Tap a month for its own guide.
May and September are the best time to visit New Hampshire on the climate data: September scores 87/100, with highs around 74°F (23°C) and 3.7 in (93 mm) of rain. June – August and October are good shoulder-season months. The toughest months are December – February, mainly because of cool days.
October is the wettest month, averaging about 4.9 in (124 mm) of rain. January is the driest, with about 2.8 in (70 mm). The yearly total is around 45.4 in (1153 mm).
January is the coldest, with average lows of 14°F (-10°C) and highs of 30°F (-1°C). The warmest is July, with average highs of 81°F (27°C).
Yes: in July & August humidity averages 79% with warm temperatures, so it feels muggy. Summer highs peak around 81°F (27°C).
On average, yes: lows fall below 32°F (0°C) in November – March, bottoming out around 14°F (-10°C) in January.
Poll the group on May and September dates, then plan the days, packing and costs together.
