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Monthly climate in Superior, Montana, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Superior features a humid continental climate (Dfb).Temperatures typically range between -5 °C (23 °F) and 19 °C (67 °F) through the year, but rarely can drop to -27 °C (-17 °F) or can rise to as high as 38 °C (101 °F).The average annual precipitation amounts to about 862 mm (34.0 inches) and receives 154 rainy days on the 1 mm (0.04 inches) threshold annually.Superior enjoys an average of 2821 hours of sunshine throughout the year, and daylight varies from 8 hours 32 minutes to 15 hours 50 minutes per day.

Monthly average temperatures in Superior, Montana, United States §

The warmest months in Superior are June, July and August, with daily mean temperatures ranging from 14 to 19 °C (58 - 67 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -5 to -3 °C (23 - 27 °F) throughout the day. On average each year, Superior experiences 47 days above 25 °C (77.0 °F) and 162 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Superior, Montana, 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 7°C
(45°F)		 11°C
(52°F)		 17°C
(63°F)		 25°C
(77°F)		 28°C
(84°F)		 36°C
(98°F)		 37°C
(99°F)		 38°C
(101°F)		 33°C
(91°F)		 24°C
(76°F)		 14°C
(58°F)		 14°C
(58°F)
Mean maximum 5°C
(42°F)		 8°C
(46°F)		 11°C
(53°F)		 19°C
(67°F)		 25°C
(77°F)		 27°C
(81°F)		 34°C
(93°F)		 35°C
(95°F)		 31°C
(88°F)		 21°C
(69°F)		 12°C
(54°F)		 8°C
(47°F)
Average high -0°C
(32°F)		 -1°C
(30°F)		 5°C
(41°F)		 9°C
(49°F)		 16°C
(60°F)		 20°C
(69°F)		 27°C
(82°F)		 27°C
(80°F)		 20°C
(68°F)		 10°C
(51°F)		 4°C
(40°F)		 0°C
(33°F)
Daily mean -4°C
(26°F)		 -5°C
(23°F)		 0°C
(33°F)		 4°C
(39°F)		 10°C
(50°F)		 14°C
(58°F)		 19°C
(67°F)		 19°C
(66°F)		 13°C
(55°F)		 5°C
(41°F)		 1°C
(33°F)		 -3°C
(27°F)
Average low -7°C
(19°F)		 -9°C
(15°F)		 -4°C
(25°F)		 -1°C
(30°F)		 4°C
(39°F)		 8°C
(46°F)		 11°C
(52°F)		 11°C
(52°F)		 6°C
(44°F)		 -0°C
(32°F)		 -3°C
(27°F)		 -6°C
(22°F)
Mean minimum -19°C
(-1°F)		 -22°C
(-7°F)		 -14°C
(8°F)		 -7°C
(20°F)		 -3°C
(27°F)		 1°C
(34°F)		 5°C
(41°F)		 4°C
(39°F)		 -1°C
(30°F)		 -10°C
(15°F)		 -10°C
(13°F)		 -16°C
(4°F)
Minimum -27°C
(-17°F)		 -27°C
(-16°F)		 -22°C
(-7°F)		 -12°C
(11°F)		 -4°C
(24°F)		 0°C
(33°F)		 3°C
(38°F)		 2°C
(36°F)		 -5°C
(24°F)		 -21°C
(-6°F)		 -14°C
(7°F)		 -22°C
(-8°F)

Compare climate in Superior with other places

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

Monthly average precipitation in Superior, Montana, United States §

Superior usually has the most precipitation in February, November and December, with an average of 16 rainy days and 102 mm (4.0 inches) of precipitation per month.The driest months in Superior are July, August and September. On average, 30 mm (1.2 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Superior, Montana, 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) 71 (2.8) 117 (4.6) 75 (2.9) 87 (3.4) 84 (3.3) 65 (2.6) 20 (0.8) 29 (1.1) 41 (1.6) 85 (3.4) 95 (3.7) 92 (3.6)
Average precipitation days (≥ 1 mm) 13 18 15 17 15 14 4 6 8 12 16 16

Monthly sunshine hours in Superior, Montana, United States §

The sunniest months in Superior are June, July and August, when the sun shines an average of 11 hours 57 minutes a day.Least sunny months in Superior: January, February and December receive an average of 3 hours 33 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Superior, Montana, 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 97 119 215 246 311 337 409 353 272 211 138 106
Mean daily daylight hours 8h 58m 10h 17m 11h 57m 13h 39m 15h 6m 15h 50m 15h 26m 14h 7m 12h 29m 10h 48m 9h 18m 8h 32m

Solar UV radiation in Superior, Montana, United States §

Superior 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 Low / Moderate exposure category. In these months, the maximum values of the UV index do not exceed 3. For more detailed information, check out our hourly Superior UV Index data.

Average daily maximum UV levels by month for Superior, Montana, 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) 2 4 6 7 10 10 10 9 7 5 3 2