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Monthly climate in Westminster, Maryland, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Westminster features a humid subtropical climate (Cfa).Temperatures typically range between 2 °C (35 °F) and 26 °C (78 °F) through the year, but rarely can drop to -16 °C (3 °F) or can rise to as high as 36 °C (98 °F).The average annual precipitation amounts to about 1326 mm (52.2 inches) and receives 127 rainy days on the 1 mm (0.04 inches) threshold annually.Westminster enjoys an average of 2979 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 Westminster, Maryland, United States §

The warmest months in Westminster are June, July and August, with daily mean temperatures ranging from 23 to 26 °C (73 - 78 °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, Westminster experiences 101 days above 25 °C (77.0 °F) and 69 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Westminster, 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)		 27°C
(80°F)		 26°C
(80°F)		 30°C
(86°F)		 33°C
(92°F)		 34°C
(94°F)		 36°C
(98°F)		 36°C
(97°F)		 34°C
(93°F)		 34°C
(93°F)		 24°C
(75°F)		 18°C
(65°F)
Mean maximum 17°C
(62°F)		 21°C
(69°F)		 24°C
(76°F)		 28°C
(82°F)		 32°C
(90°F)		 34°C
(93°F)		 35°C
(96°F)		 34°C
(94°F)		 32°C
(89°F)		 29°C
(85°F)		 23°C
(73°F)		 16°C
(62°F)
Average high 5°C
(42°F)		 8°C
(47°F)		 12°C
(53°F)		 18°C
(64°F)		 23°C
(73°F)		 28°C
(82°F)		 31°C
(88°F)		 29°C
(84°F)		 26°C
(79°F)		 20°C
(69°F)		 12°C
(54°F)		 8°C
(46°F)
Daily mean 2°C
(35°F)		 4°C
(39°F)		 7°C
(44°F)		 12°C
(55°F)		 18°C
(64°F)		 23°C
(73°F)		 26°C
(78°F)		 24°C
(76°F)		 21°C
(70°F)		 15°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)		 8°C
(46°F)		 13°C
(56°F)		 18°C
(64°F)		 21°C
(70°F)		 20°C
(68°F)		 17°C
(62°F)		 11°C
(52°F)		 3°C
(37°F)		 0°C
(32°F)
Mean minimum -11°C
(12°F)		 -10°C
(14°F)		 -7°C
(20°F)		 -1°C
(31°F)		 4°C
(40°F)		 12°C
(53°F)		 16°C
(62°F)		 15°C
(59°F)		 9°C
(49°F)		 3°C
(37°F)		 -5°C
(24°F)		 -8°C
(18°F)
Minimum -16°C
(4°F)		 -16°C
(3°F)		 -12°C
(11°F)		 -2°C
(28°F)		 1°C
(34°F)		 9°C
(48°F)		 14°C
(58°F)		 14°C
(57°F)		 5°C
(42°F)		 1°C
(33°F)		 -6°C
(22°F)		 -12°C
(10°F)

Compare climate in Westminster with other places

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

Monthly average precipitation in Westminster, Maryland, United States §

Westminster usually has the most precipitation in May, July and August, with an average of 13 rainy days and 150 mm (5.9 inches) of precipitation per month.The driest months in Westminster are January, March and November. On average, 82 mm (3.2 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Westminster, 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) 62 (2.4) 95 (3.8) 93 (3.6) 95 (3.7) 144 (5.7) 125 (4.9) 152 (6.0) 156 (6.1) 116 (4.5) 103 (4.1) 90 (3.6) 96 (3.8)
Average precipitation days (≥ 1 mm) 8 11 11 11 14 12 11 14 10 9 7 9

Monthly sunshine hours in Westminster, Maryland, United States §

The sunniest months in Westminster are June, July and August, when the sun shines an average of 10 hours 41 minutes a day.Least sunny months in Westminster: January, February and December receive an average of 5 hours 28 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Westminster, 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 139 174 252 248 269 321 349 312 272 236 219 183
Mean daily daylight hours 9h 43m 10h 42m 11h 58m 13h 16m 14h 21m 14h 54m 14h 36m 13h 38m 12h 23m 11h 6m 9h 58m 9h 24m

Solar UV radiation in Westminster, Maryland, United States §

Westminster 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 Westminster UV Index data.

Average daily maximum UV levels by month for Westminster, 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