What is the hottest month in Keene?

July is the warmest month in Keene, with an average high of 81.9°F.

What is the coldest month in Keene?

January is the coldest month in Keene, with an average low of 10.4°F.

What month does Keene get the most rain?

October is typically the wettest month in Keene, with about 4.86 inches of precipitation.

What plant hardiness zone is Keene in?

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

Keene, NH

Climate overview — based on NOAA 1991-2020 normals from KEENE, NH US.

Dfb Warm-summer humid continental climate 6b USDA hardiness Zone 6b

Year-round temperatures (°F)

Avg high Avg low

Climate summary

Keene has an annual average temperature of 45.4°F with about 46.1 inches of precipitation per year and 59.8 inches of snow. The warmest month is July (average high 81.9°F), and the coldest is January (average low 10.4°F). October is typically the wettest month (4.86 in) and February the driest (2.77 in). Snow typically falls from October through April.

Pleasant months

1 / 12

avg high 65–80°F, low ≥ 50°F

Annual swing

48.6°F

warmest to coldest month

Heating need

7,269

HDD/yr

Cooling need

195

CDD/yr

Best time to visit Keene

Full guide →

Climate change signal

All-time records →

28 of 366 (7.7%) of Keene'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		15
1900s		26
1910s		32
1920s		18
1930s		21
1940s		32
1950s		37
1960s		27
1970s		26
1980s		31
1990s		30
2000s		24
2010s		30
2020s		17

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	30.4°F	10.4°F	20.4°F	3.12 in	15.2 in	12
February	34.3°F	11.4°F	22.8°F	2.77 in	14.4 in	10
March	43.0°F	19.7°F	31.3°F	3.35 in	11.0 in	11
April	56.6°F	30.1°F	43.3°F	3.39 in	2.2 in	11
May	68.6°F	41.0°F	54.8°F	3.77 in	—	13
June	76.9°F	50.7°F	63.8°F	4.41 in	—	12
July	81.9°F	56.0°F	69.0°F	4.49 in	—	12
August	80.5°F	54.4°F	67.5°F	4.28 in	—	10
September	73.2°F	47.0°F	60.1°F	4.26 in	—	10
October	59.8°F	35.7°F	47.8°F	4.86 in	0.2 in	12
November	46.7°F	26.8°F	36.7°F	3.49 in	2.4 in	11
December	35.6°F	17.8°F	26.7°F	3.92 in	14.4 in	12