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Monthly climate in Boonsboro, Maryland, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Boonsboro features a humid subtropical climate (Cfa).Temperatures typically range between 2 °C (35 °F) and 26 °C (79 °F) through the year, but rarely can drop to -17 °C (2 °F) or can rise to as high as 37 °C (99 °F).The average annual precipitation amounts to about 1186 mm (46.7 inches) and receives 125 rainy days on the 1 mm (0.04 inches) threshold annually.Boonsboro enjoys an average of 2938 hours of sunshine throughout the year, and daylight varies from 9 hours 24 minutes to 14 hours 54 minutes per day.

Monthly average temperatures in Boonsboro, Maryland, United States §

The warmest months in Boonsboro are June, July and August, with daily mean temperatures ranging from 23 to 26 °C (74 - 79 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 2 to 4 °C (35 - 39 °F) throughout the day. On average each year, Boonsboro experiences 109 days above 25 °C (77.0 °F) and 71 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Boonsboro, Maryland, United States.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to June 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum 20°C
(69°F)		 28°C
(83°F)		 26°C
(78°F)		 30°C
(87°F)		 33°C
(92°F)		 35°C
(95°F)		 37°C
(99°F)		 37°C
(99°F)		 35°C
(95°F)		 34°C
(94°F)		 25°C
(77°F)		 19°C
(67°F)
Mean maximum 17°C
(62°F)		 21°C
(71°F)		 25°C
(77°F)		 28°C
(83°F)		 32°C
(90°F)		 34°C
(94°F)		 36°C
(97°F)		 35°C
(95°F)		 33°C
(92°F)		 30°C
(86°F)		 23°C
(74°F)		 17°C
(62°F)
Average high 5°C
(42°F)		 8°C
(47°F)		 12°C
(54°F)		 18°C
(65°F)		 23°C
(74°F)		 28°C
(83°F)		 32°C
(89°F)		 30°C
(86°F)		 27°C
(80°F)		 21°C
(70°F)		 12°C
(54°F)		 8°C
(46°F)
Daily mean 2°C
(35°F)		 4°C
(39°F)		 7°C
(45°F)		 13°C
(55°F)		 18°C
(65°F)		 23°C
(74°F)		 26°C
(79°F)		 25°C
(77°F)		 21°C
(71°F)		 16°C
(60°F)		 7°C
(45°F)		 4°C
(39°F)
Average low -2°C
(29°F)		 -0°C
(31°F)		 2°C
(36°F)		 7°C
(46°F)		 13°C
(56°F)		 18°C
(64°F)		 21°C
(70°F)		 20°C
(69°F)		 17°C
(62°F)		 11°C
(52°F)		 3°C
(37°F)		 -0°C
(32°F)
Mean minimum -12°C
(11°F)		 -10°C
(14°F)		 -7°C
(21°F)		 -1°C
(31°F)		 4°C
(39°F)		 12°C
(53°F)		 16°C
(62°F)		 15°C
(60°F)		 9°C
(48°F)		 3°C
(37°F)		 -4°C
(24°F)		 -9°C
(17°F)
Minimum -17°C
(2°F)		 -16°C
(4°F)		 -11°C
(13°F)		 -2°C
(28°F)		 1°C
(34°F)		 9°C
(48°F)		 14°C
(58°F)		 13°C
(56°F)		 4°C
(40°F)		 1°C
(34°F)		 -6°C
(22°F)		 -12°C
(11°F)

Compare climate in Boonsboro with other places

Compare temperature, precipitation, sunshine, UV index in Boonsboro, Maryland, United States with other places around the world.

Monthly average precipitation in Boonsboro, Maryland, United States §

Boonsboro usually has the most precipitation in May, July and September, with an average of 11 rainy days and 121 mm (4.8 inches) of precipitation per month.The driest months in Boonsboro are January, March and November. On average, 77 mm (3.0 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Boonsboro, Maryland, United States.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Average precipitation mm (inches) 61 (2.4) 94 (3.7) 88 (3.5) 104 (4.1) 132 (5.2) 100 (3.9) 127 (5.0) 98 (3.9) 105 (4.1) 100 (3.9) 84 (3.3) 94 (3.7)
Average precipitation days (≥ 1 mm) 8 11 10 12 14 12 11 13 9 9 7 9

Monthly sunshine hours in Boonsboro, Maryland, United States §

The sunniest months in Boonsboro are June, July and August, when the sun shines an average of 10 hours 32 minutes a day.Least sunny months in Boonsboro: January, February and December receive an average of 5 hours 22 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Boonsboro, Maryland, United States.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Mean monthly sunshine hours 136 171 249 244 262 312 347 309 271 233 216 180
Mean daily daylight hours 9h 43m 10h 42m 11h 58m 13h 16m 14h 22m 14h 54m 14h 36m 13h 38m 12h 23m 11h 6m 9h 58m 9h 24m

Solar UV radiation in Boonsboro, Maryland, United States §

Boonsboro experiences the highest level of ultraviolet (UV) radiation in May, June and July, when the maximum UV index can reach values of 10 - 10, which corresponds to the Very High category of sun exposure.January, November and December are in the Moderate exposure category. In these months, the maximum values of the UV index do not exceed 4. For more detailed information, check out our hourly Boonsboro UV Index data.

Average daily maximum UV levels by month for Boonsboro, Maryland, United States.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2022 to January 2023.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
UV Index (month maximum) 3 5 7 9 10 10 10 9 8 7 4 3