Manchester, NH Climate & Monthly Averages
The climate of Manchester
Cold is the baseline in Manchester, not the exception. Night-time lows sit at or below freezing in 4 months of the year, and the warmest month, July, still only averages 84°F (29°C) by day. January runs to 18°F (-8°C) after dark.
Climate quick facts
- Hottest month: July - highs near 84°F (29°C)
- Coldest month: January - highs near 34°F (1°C)
- Decade extremes (2015-2024): 100°F (38°C) high · -19°F (-28°C) low
- Wettest month: December (11 rainy days) · Sunniest: July (11.2 h sun/day)
- Climate type: humid continental
- Annual swing: 26°C between the average warmest and coolest month · day to night: 10°C
- Snow: about 21 days a year
- Months with freezing average lows: 4
- Average humidity: 70%
Temperatures through the year
Three of the twelve months pair mild highs with fewer than twelve wet days; the longest unbroken run is May through June. January bottoms out at 34°F (1°C) in daylight, 18°F (-8°C) after dark. Warmth peaks in July: highs of 84°F (29°C), lows of 64°F (18°C). Overnight lows average at or below freezing for 4 months, December through March.
Rain, sun and snow
Snow falls on roughly 21 days a year, mostly November through April. December is the wettest month at 4.6 inches (116 mm) over 11 days; May is the driest. The gridded 2015-2024 daily record for this location tops out at 100°F (38°C) and bottoms at -19°F (-28°C) - decade extremes, not all-time station records.
How Manchester compares
- 27% of the year's precipitation falls in its wettest three months - more evenly spread than almost every other city we track.
- Manchester averages 49°F (10°C) across the year - cooler than all but 8% of the 3496 cities we track.
- Its warmest and coolest months are 26°C apart - a wider seasonal swing than 89% of the 3496 cities we track.
Ranked against every city in our dataset, each measured on the same ten-year window.
Monthly climate table
| Month | High | Low | Rain days | Precipitation | Sunshine | Daylight | Wet-day chance | Humidity |
|---|---|---|---|---|---|---|---|---|
| January | 34° | 18° | 10 | 3.7 in | 6.0 h/day | 9.3 h | 31% | 68% |
| February | 37° | 18° | 10 | 3.0 in | 6.8 h/day | 10.5 h | 36% | 69% |
| March | 44° | 26° | 10 | 3.7 in | 7.9 h/day | 11.8 h | 33% | 66% |
| April | 55° | 36° | 12 | 4.0 in | 8.2 h/day | 13.3 h | 41% | 68% |
| May | 69° | 48° | 10 | 2.7 in | 10.0 h/day | 14.6 h | 31% | 67% |
| June | 78° | 57° | 11 | 3.6 in | 10.9 h/day | 15.3 h | 37% | 68% |
| July | 84° | 64° | 11 | 4.3 in | 11.2 h/day | 15.0 h | 36% | 70% |
| August | 82° | 63° | 11 | 3.8 in | 10.7 h/day | 13.9 h | 36% | 73% |
| September | 74° | 56° | 9 | 3.8 in | 9.0 h/day | 12.4 h | 30% | 75% |
| October | 62° | 45° | 9 | 4.4 in | 7.2 h/day | 10.9 h | 30% | 77% |
| November | 48° | 33° | 9 | 3.1 in | 6.5 h/day | 9.7 h | 30% | 72% |
| December | 39° | 25° | 11 | 4.6 in | 5.6 h/day | 9.0 h | 35% | 73% |
Manchester month by month
Average high and low for each month, with the bar showing where it sits in Manchester's year (left is the coldest night, right is the warmest afternoon).
January
- Rain
- 10 days
- Sunshine
- 6.0 h
- Daylight
- 9.3 h
- Snow
- 5 days
February
- Rain
- 10 days
- Sunshine
- 6.8 h
- Daylight
- 10.5 h
- Snow
- 6 days
March
- Rain
- 10 days
- Sunshine
- 7.9 h
- Daylight
- 11.8 h
- Snow
- 4 days
April
- Rain
- 12 days
- Sunshine
- 8.2 h
- Daylight
- 13.3 h
- Snow
- 2 days
May
- Rain
- 10 days
- Sunshine
- 10.0 h
- Daylight
- 14.6 h
June
- Rain
- 11 days
- Sunshine
- 10.9 h
- Daylight
- 15.3 h
July
- Rain
- 11 days
- Sunshine
- 11.2 h
- Daylight
- 15.0 h
August
- Rain
- 11 days
- Sunshine
- 10.7 h
- Daylight
- 13.9 h
September
- Rain
- 9 days
- Sunshine
- 9.0 h
- Daylight
- 12.4 h
October
- Rain
- 9 days
- Sunshine
- 7.2 h
- Daylight
- 10.9 h
November
- Rain
- 9 days
- Sunshine
- 6.5 h
- Daylight
- 9.7 h
- Snow
- 1 day
December
- Rain
- 11 days
- Sunshine
- 5.6 h
- Daylight
- 9.0 h
- Snow
- 4 days
Warmer places to go, by month: January · February · March · April · May · June · July · August · September · October · November · December
Seasons in Manchester
Spring (March through May)
Spring runs cool rather than cold here - highs near 56°F (13°C), nights near 37°F (3°C), and rain falls on around 32 of the 90 days, plus about 5 snowy days.
Summer (June through August)
Summer in Manchester brings hot afternoons, with daytime highs averaging 81°F (27°C) and nights around 62°F (16°C); rain falls on around 34 of the 90 days. Daylight is generous - around 10.9 hours of sun a day.
Fall (September through November)
Through fall, Manchester stays on the cool side of mild: 61°F (16°C) by day, 45°F (7°C) after dark, and expect showers on roughly 27 days across the season.
Winter (December through February)
Winter in Manchester brings deep cold, with daytime highs averaging 37°F (3°C) and nights around 20°F (-6°C); rain falls on around 31 of the 90 days, plus about 15 snowy days. Wind sharpens cold like this considerably; pair the forecast winds with the wind speed converter to judge exposed conditions.
Climate questions, answered
How cold does Manchester get in winter?
How often does it rain in Manchester?
What should I pack for Manchester?
When does Manchester drop below freezing?
Is Manchester warmer or cooler than most cities?
How much sun does Manchester get?
Best time to visit Manchester
Aim for May to October if you get the choice: these are the warmest and brightest weeks of the year, and highs average 74°F (24°C) against roughly 10 wet days a month. For the same question asked the other way round, see where else is warm in May.
Pack for Manchester with light clothing for the warm months, a heavy insulated coat, hat and gloves for winter and a compact umbrella or rain shell. July nights average 64°F (18°C), so evenings rarely match the afternoons.
Manchester temperature records (2015-2024)
Derived from ERA5 reanalysis data, 2015–2024. Official station records may differ. Need the precipitation in other units? The mm-to-inches rainfall converter handles it.