What is the hottest month in Northampton?

July is the warmest month in Northampton, with an average high of 83.1°F.

What is the coldest month in Northampton?

January is the coldest month in Northampton, with an average low of 13.8°F.

What month does Northampton get the most rain?

October is typically the wettest month in Northampton, with about 4.74 inches of precipitation.

What plant hardiness zone is Northampton in?

Northampton is approximately in USDA plant hardiness Zone 6b, based on the average annual extreme minimum temperature.

Has the climate in Northampton changed recently?

12.3% of Northampton's all-time daily heat records were set in the last decade (since 2015), compared to roughly 5% if records were evenly distributed over time.

Northampton, MA

Climate overview — based on NOAA 1991-2020 normals from AMHERST, MA US.

Dfa Hot-summer humid continental climate 6b USDA hardiness Zone 6b

Year-round temperatures (°F)

Avg high Avg low

Climate summary

Northampton has an annual average temperature of 48.2°F with about 46.6 inches of precipitation per year and 36.5 inches of snow. The warmest month is July (average high 83.1°F), and the coldest is January (average low 13.8°F). October is typically the wettest month (4.74 in) and February the driest (2.93 in). Snow typically falls from November through April.

Pleasant months

2 / 12

avg high 65–80°F, low ≥ 50°F

Annual swing

47.8°F

warmest to coldest month

Heating need

6,435

HDD/yr

Cooling need

393

CDD/yr

Best time to visit Northampton

Full guide →

Climate change signal

All-time records →

45 of 366 (12.3%) of Northampton's all-time daily heat records have been set since 2015. If records were spread evenly across the station's history, only about 5% would fall in any given decade.

1890s		9
1900s		18
1910s		40
1920s		21
1930s		23
1940s		39
1950s		23
1960s		16
1970s		25
1980s		28
1990s		32
2000s		35
2010s		32
2020s		25

Bars: number of all-time daily heat records still standing that were set in each decade.

Monthly averages

Month	Avg High	Avg Low	Avg Temp	Precipitation	Snow	Rainy days
January	34.0°F	13.8°F	23.9°F	3.36 in	8.1 in	11
February	37.0°F	15.3°F	26.2°F	2.93 in	11.0 in	9
March	45.2°F	24.1°F	34.7°F	3.47 in	7.3 in	10
April	58.2°F	34.4°F	46.3°F	3.79 in	1.0 in	11
May	69.5°F	45.4°F	57.5°F	3.71 in	—	13
June	78.0°F	55.0°F	66.5°F	4.46 in	—	11
July	83.1°F	60.2°F	71.7°F	4.12 in	—	11
August	81.5°F	58.3°F	69.9°F	4.12 in	—	10
September	74.4°F	50.3°F	62.3°F	4.62 in	—	9
October	61.9°F	38.6°F	50.2°F	4.74 in	—	11
November	49.7°F	29.1°F	39.4°F	3.38 in	1.6 in	10
December	39.2°F	20.8°F	30.0°F	3.89 in	7.5 in	11