Manchester climate
Manchester (New Hampshire, United States) has a warm-summer humid continental climate (Köppen Dfb). The average temperature over the year is 9 °C48 °F, and about 1,181 mm46 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Manchester climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin | Frost days |
|---|---|---|---|---|---|
| Jan | −131 | −915 | −523 | 732.9 | 30 |
| Feb | 133 | −916 | −425 | 833.3 | 27 |
| Mar | 542 | −424 | 033 | 993.9 | 26 |
| Apr | 1355 | 134 | 745 | 1024.0 | 12 |
| May | 1966 | 846 | 1356 | 973.8 | 0 |
| Jun | 2475 | 1356 | 1865 | 1154.5 | 0 |
| Jul | 2781 | 1762 | 2272 | 973.8 | 0 |
| Aug | 2781 | 1661 | 2171 | 953.7 | 0 |
| Sep | 2374 | 1253 | 1864 | 903.5 | 0 |
| Oct | 1660 | 642 | 1151 | 1234.9 | 3 |
| Nov | 948 | 032 | 440 | 943.7 | 16 |
| Dec | 337 | −523 | −130 | 1114.4 | 27 |
| Year | 2781 | −915 | 948 | 1,18146 | 141 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total. Frost days are for the whole grid cell.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 89% | 62% | 1.8 | 9:20 |
| Feb | 88% | 61% | 2.7 | 10:28 |
| Mar | 83% | 61% | 3.7 | 11:48 |
| Apr | 79% | 61% | 4.7 | 13:20 |
| May | 79% | 64% | 5.3 | 14:38 |
| Jun | 80% | 62% | 5.7 | 15:20 |
| Jul | 78% | 55% | 6.0 | 15:03 |
| Aug | 76% | 53% | 5.3 | 13:55 |
| Sep | 76% | 51% | 4.3 | 12:26 |
| Oct | 79% | 59% | 2.8 | 10:57 |
| Nov | 82% | 60% | 2.0 | 9:39 |
| Dec | 87% | 63% | 1.5 | 9:01 |
Humid. = average relative humidity at 2 m; cloud = average cloud amount; solar = average daily solar energy reaching the ground in kWh/m² (all-sky); daylight in hours:minutes, calculated for the 15th of each month.
What the climate of Manchester is like
The warmest month is July, with an average high of 27 °C81 °F and a low of 17 °C62 °F. The coldest is January, when highs average −1 °C31 °F and lows −9 °C15 °F. Seasons are strongly marked: the warmest month is on average 27 °C48.6 °F warmer than the coldest.
It is wet, with about 1,181 mm46 in of precipitation per year. Rain is spread fairly evenly through the year. The wettest month is October (123 mm4.9 in), the driest is January (73 mm2.9 in).
Relative humidity ranges from 76% in August to 89% in January. The clearest skies (lowest average cloud amount, 51%) are typical of September. Average wind speed near the ground ranges from 1 km/h (0 mph) in June to 3 km/h (2 mph) in February. Daylight lasts from about 9.0 hours in December to 15.3 hours in June.
A lasting snow cover is typical in December–March, when the average snow depth in the reanalysis exceeds 10 cm (deepest in February, about 17 cm).
Best time to visit Manchester
Based on these averages, the most comfortable months for sightseeing and outdoor activities are July–September: average highs of 23 °C74 °F to 27 °C81 °F with 90 mm3.5 in to 97 mm3.8 in of precipitation per month.
The most challenging month is January, which is cold, with average highs of −1 °C31 °F.
Comfort score: months are ranked by how close they come to an average high of 21–28 °C (70–82 °F), lows above 5 °C (41 °F), little precipitation and moderate humidity. The best-ranked months of each place are recommended, even where none meets all of these. These are general rules of thumb applied to long-term averages.
What to pack for Manchester
- Winter (December–February) — highs −131 to 3 °C37 °F, lows −915 to −5 °C23 °F, about 89 mm3.5 in of precipitation a month. Pack a winter coat, hat, gloves and warm, non-slip boots and shoes with good grip, as frost is common.
- Spring (March–May) — highs 542 to 19 °C66 °F, lows −424 to 8 °C46 °F, about 100 mm3.9 in of precipitation a month. Pack long sleeves, a sweater and a medium jacket, an extra layer for the cooler mornings and evenings and an umbrella or light rain jacket.
- Summer (June–August) — highs 2475 to 27 °C81 °F, lows 1356 to 17 °C62 °F, about 102 mm4.0 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses, an extra layer for the cooler mornings and evenings and an umbrella or light rain jacket.
- Autumn (September–November) — highs 948 to 23 °C74 °F, lows 032 to 12 °C53 °F, about 103 mm4.0 in of precipitation a month. Pack long sleeves, a sweater and a medium jacket, an extra layer for the cooler mornings and evenings and an umbrella or light rain jacket.
How Manchester compares
Compared with Boston, about 78 km to the southeast, Manchester is on average 1.1 °C2 °F cooler and receives a similar amount of precipitation. The difference is largest in January (1.9 °C3.4 °F cooler).
Of the 222 places in the United States covered by World Climates, Manchester is the 214th warmest by annual mean temperature and the 76th wettest by annual precipitation. See all of them on the United States climate page.
Places in other countries with the most similar temperature and rainfall pattern: Kingston (Canada, Dfb), Windsor (Canada, Dfa) and Brantford (Canada, Dfa).
Nearby places
- Boston 78 km · 10 °C50 °F · 1,207 mm48 in
- Worcester 86 km · 9 °C48 °F · 1,183 mm47 in
- Providence 130 km · 11 °C51 °F · 1,208 mm48 in
- Springfield 136 km · 10 °C51 °F · 1,201 mm47 in
- New Bedford 157 km · 11 °C52 °F · 1,155 mm45 in
- Hartford 170 km · 10 °C51 °F · 1,201 mm47 in
- Albany 192 km · 10 °C49 °F · 1,197 mm47 in
- Waterbury 207 km · 10 °C51 °F · 1,208 mm48 in
Frequently asked questions
What is the warmest month in Manchester?
July is the warmest month in Manchester, with an average high of 27 °C (81 °F) and an average low of 17 °C (62 °F).
What is the coldest month in Manchester?
January is the coldest month, with an average high of -1 °C (31 °F) and an average low of -9 °C (15 °F).
When does it rain the most in Manchester?
October is the wettest month with about 123 mm (4.9 in) of precipitation; January is the driest with about 73 mm (2.9 in).
What is the best time to visit Manchester?
Judging by long-term averages, the most comfortable months are July–September.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.