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Cumberland, Maryland climate

Cfa Humid subtropical

Cumberland has a seasonal cool-temperate climate (Humid subtropical, Köppen Cfa). The hottest month is July with an average daily high near 30°C, while the coldest is January averaging around −5°C at night. Precipitation is fairly even year-round, totalling about 1034 mm. Light snow accumulates each winter (59 cm of snow per year on average).

☀️ Summers

Warm

Highs near 30°C in July.

About 22 days a year above 32 °C

❄️ Winters

Cold

Lows near −5°C in January.

About 94 freezing nights a year

🌧️ Rain & snow

Wet

About 1034 mm of rain a year, plus 59 cm of snow.

Snow falls through the winter months

⛅ Sky & trend

Often cloudy

Cloudy skies much of the year.

+0.4 °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

Cumberland climate normals (1991–2020)

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°C)	5	7	12	18	23	28	30	29	25	19	13	7
Avg temp (°C)	0	2	6	12	17	22	24	23	19	13	7	3
Avg low (°C)	−5	−4	0	6	11	16	19	18	14	7	2	−2
Precipitation (mm)	70	57	88	89	107	104	104	82	106	77	71	79
Snowfall (cm)	18	20	10	—	—	—	—	—	—	—	2	10

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Avg high (°C)	5	7	12	18	23	28
Avg temp (°C)	0	2	6	12	17	22
Avg low (°C)	−5	−4	0	6	11	16
Precipitation (mm)	70	57	88	89	107	104
Snowfall (cm)	18	20	10	—	—	—

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°C)	30	29	25	19	13	7
Avg temp (°C)	24	23	19	13	7	3
Avg low (°C)	19	18	14	7	2	−2
Precipitation (mm)	104	82	106	77	71	79
Snowfall (cm)	—	—	—	—	2	10

How often — frequency of weather events

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Days with measurable rain (days)	9	8	10	11	13	11	10	9	9	9	9	9
Days with high ≥ 32°C (days)	—	—	—	0.3	0.8	4	9	6	2	0.2	—	—
Days with low ≤ 0°C (days)	23	21	15	3	0.0	—	—	—	—	1	11	21
Days with snowfall ≥ 2.5 cm (days)	2	2	1	—	—	—	—	—	—	0.1	0.2	1

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Days with measurable rain (days)	9	8	10	11	13	11
Days with high ≥ 32°C (days)	—	—	—	0.3	0.8	4
Days with low ≤ 0°C (days)	23	21	15	3	0.0	—
Days with snowfall ≥ 2.5 cm (days)	2	2	1	—	—	—

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Days with measurable rain (days)	10	9	9	9	9	9
Days with high ≥ 32°C (days)	9	6	2	0.2	—	—
Days with low ≤ 0°C (days)	—	—	—	1	11	21
Days with snowfall ≥ 2.5 cm (days)	—	—	—	0.1	0.2	1

Sky & atmosphere

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	70	70	68	68	66	62	60	59	57	58	66	70
Clear days (≤ 30% cloud)	3	3	5	5	5	5	6	6	7	7	5	3
Partly cloudy days (30–70%)	10	9	9	8	10	12	12	12	10	10	9	10
Cloudy days (≥ 70%)	18	17	17	17	17	14	13	12	12	13	16	18
Relative humidity (%)	83	82	79	76	76	72	67	67	69	74	77	83
Wind speed (m/s)	0.7	0.8	0.7	0.5	0.4	0.4	0.3	0.3	0.4	0.4	0.4	0.5

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Cloud cover (%)	70	70	68	68	66	62
Clear days (≤ 30% cloud)	3	3	5	5	5	5
Partly cloudy days (30–70%)	10	9	9	8	10	12
Cloudy days (≥ 70%)	18	17	17	17	17	14
Relative humidity (%)	83	82	79	76	76	72
Wind speed (m/s)	0.7	0.8	0.7	0.5	0.4	0.4

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	60	59	57	58	66	70
Clear days (≤ 30% cloud)	6	6	7	7	5	3
Partly cloudy days (30–70%)	12	12	10	10	9	10
Cloudy days (≥ 70%)	13	12	12	13	16	18
Relative humidity (%)	67	67	69	74	77	83
Wind speed (m/s)	0.3	0.3	0.4	0.4	0.4	0.5

Methodology & sources

Temperature & precipitation — the official 1991–2020 climate normals from NOAA's U.S. Climate Normals, measured at Winchester (NOAA GHCN station USC00449181), about 74 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 →