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. In those months the average snow depth in the reanalysis exceeds 10 cm. It is deepest in February, at 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 then reach 23 °C74 °F to 27 °C81 °F. Precipitation is 90 mm3.5 in to 97 mm3.8 in 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 ideal. That means 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
The nearest larger place is Boston, about 78 km to the southeast. Compared with it, Manchester is on average 1.1 °C2 °F cooler. It receives a similar amount of precipitation. The difference is largest in January (1.9 °C3.4 °F cooler).
World Climates covers 222 places in the United States. By annual mean temperature, Manchester is the 214th warmest of them. By annual precipitation, it is the 76th wettest. See all of them on the United States climate page.
Some places in other countries have a very similar pattern of temperature and rainfall. The closest matches are Kingston (Canada, Dfb), Windsor (Canada, Dfa) and Brantford (Canada, Dfa).
Nearby places
- Climate in Boston 78 km · 10 °C50 °F · 1,207 mm48 in
- Climate in Worcester 86 km · 9 °C48 °F · 1,183 mm47 in
- Climate in Providence 130 km · 11 °C51 °F · 1,208 mm48 in
- Climate in Springfield 136 km · 10 °C51 °F · 1,201 mm47 in
- Climate in New Bedford 157 km · 11 °C52 °F · 1,155 mm45 in
- Climate in Hartford 170 km · 10 °C51 °F · 1,201 mm47 in
- Climate in Albany 192 km · 10 °C49 °F · 1,197 mm47 in
- Climate 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. Its average high is 27 °C (81 °F) and its average low is 17 °C (62 °F).
What is the coldest month in Manchester?
January is the coldest month. Its average high is -1 °C (31 °F) and its average low is -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. The gaps are largest 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.