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Keene, New Hampshire climate

Dfa Hot-summer humid continental

Keene has a strongly seasonal cool-temperate climate (Hot-summer humid continental, Köppen Dfa). The hottest month is July with an average daily high near 28°C, while the coldest is January averaging around −10°C at night. Precipitation is fairly even year-round, totalling about 1183 mm. Winters bring significant snowfall (93 cm of snow per year on average).

☀️ Summers

Warm

Highs near 28°C in July.

About 12 days a year above 32 °C

❄️ Winters

Very cold

Lows near −10°C in January.

About 152 freezing nights a year

🌧️ Rain & snow

Wet

About 1183 mm of rain a year, plus 93 cm of snow.

Snow falls through the winter months

⛅ Sky & trend

Often cloudy

Cloudy skies much of the year.

−0.0 °C vs 50 years ago

Temperature & precipitation

Daily high–low temperature range with the monthly average, plus monthly precipitation split into rain and snow · 1991–2020 normals · hover a month for the exact figures

Clear vs cloudy days

Share of days each month that are clear, partly cloudy or cloudy · 1991–2020 · hover a month for the day counts

Keene climate normals (1991–2020)

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°C)	1	3	7	15	21	26	28	28	24	17	10	4
Avg temp (°C)	−5	−3	2	8	14	19	22	21	17	10	4	−1
Avg low (°C)	−10	−9	−4	1	7	13	16	15	10	4	−2	−6
Precipitation (mm)	85	74	88	96	94	113	105	105	117	120	86	99
Snowfall (cm)	21	28	19	3	—	—	—	—	—	—	4	19

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Avg high (°C)	1	3	7	15	21	26
Avg temp (°C)	−5	−3	2	8	14	19
Avg low (°C)	−10	−9	−4	1	7	13
Precipitation (mm)	85	74	88	96	94	113
Snowfall (cm)	21	28	19	3	—	—

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°C)	28	28	24	17	10	4
Avg temp (°C)	22	21	17	10	4	−1
Avg low (°C)	16	15	10	4	−2	−6
Precipitation (mm)	105	105	117	120	86	99
Snowfall (cm)	—	—	—	—	4	19

How often — frequency of weather events

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Days with measurable rain (days)	11	9	9	11	13	11	11	10	9	10	10	11
Days with high ≥ 32°C (days)	—	—	—	0.2	0.6	2	5	3	0.8	—	—	—
Days with low ≤ 0°C (days)	29	27	25	13	2	0.0	—	—	0.4	9	20	27
Days with snowfall ≥ 2.5 cm (days)	4	3	2	0.3	—	—	—	—	—	0.0	0.5	2

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Days with measurable rain (days)	11	9	9	11	13	11
Days with high ≥ 32°C (days)	—	—	—	0.2	0.6	2
Days with low ≤ 0°C (days)	29	27	25	13	2	0.0
Days with snowfall ≥ 2.5 cm (days)	4	3	2	0.3	—	—

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Days with measurable rain (days)	11	10	9	10	10	11
Days with high ≥ 32°C (days)	5	3	0.8	—	—	—
Days with low ≤ 0°C (days)	—	—	0.4	9	20	27
Days with snowfall ≥ 2.5 cm (days)	—	—	—	0.0	0.5	2

Sky & atmosphere

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	66	64	64	66	67	65	60	57	57	62	66	66
Clear days (≤ 30% cloud)	4	4	5	5	4	4	6	7	8	6	5	4
Partly cloudy days (30–70%)	12	11	11	10	10	11	13	12	10	10	10	11
Cloudy days (≥ 70%)	15	13	15	16	17	15	12	12	12	15	16	16
Relative humidity (%)	90	90	85	79	77	78	75	74	74	78	82	88
Wind speed (m/s)	0.4	0.6	0.4	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Cloud cover (%)	66	64	64	66	67	65
Clear days (≤ 30% cloud)	4	4	5	5	4	4
Partly cloudy days (30–70%)	12	11	11	10	10	11
Cloudy days (≥ 70%)	15	13	15	16	17	15
Relative humidity (%)	90	90	85	79	77	78
Wind speed (m/s)	0.4	0.6	0.4	0.1	0.1	0.1

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	60	57	57	62	66	66
Clear days (≤ 30% cloud)	6	7	8	6	5	4
Partly cloudy days (30–70%)	13	12	10	10	10	11
Cloudy days (≥ 70%)	12	12	12	15	16	16
Relative humidity (%)	75	74	74	78	82	88
Wind speed (m/s)	0.1	0.1	0.1	0.1	0.1	0.1

Methodology & sources

Temperature & precipitation — the official 1991–2020 climate normals from NOAA's U.S. Climate Normals, measured at Amherst (NOAA GHCN station USC00190120), about 64 km from the city centre.

Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.

How we build these numbers →