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Monthly climate in Rolla, North Dakota, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Rolla features a humid continental climate (Dfb).Temperatures typically range between -15 °C (5 °F) and 20 °C (69 °F) through the year, but rarely can drop to -41 °C (-42 °F) or can rise to as high as 38 °C (101 °F).The average annual precipitation amounts to about 499 mm (19.6 inches) and receives 79 rainy days on the 1 mm (0.04 inches) threshold annually.Rolla enjoys an average of 3065 hours of sunshine throughout the year, and daylight varies from 8 hours 18 minutes to 16 hours 5 minutes per day.

Monthly average temperatures in Rolla, North Dakota, United States §

The warmest months in Rolla are June, July and August, with daily mean temperatures ranging from 18 to 20 °C (65 - 69 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -15 to -10 °C (5 - 15 °F) throughout the day. On average each year, Rolla experiences 45 days above 25 °C (77.0 °F) and 177 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Rolla, North Dakota, 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 3°C
(39°F)		 6°C
(43°F)		 16°C
(62°F)		 24°C
(75°F)		 32°C
(89°F)		 38°C
(101°F)		 32°C
(89°F)		 36°C
(97°F)		 31°C
(87°F)		 30°C
(87°F)		 20°C
(68°F)		 8°C
(47°F)
Mean maximum 2°C
(36°F)		 2°C
(36°F)		 11°C
(51°F)		 19°C
(67°F)		 28°C
(82°F)		 30°C
(86°F)		 31°C
(87°F)		 33°C
(91°F)		 29°C
(85°F)		 23°C
(74°F)		 10°C
(51°F)		 5°C
(42°F)
Average high -9°C
(16°F)		 -10°C
(14°F)		 0°C
(33°F)		 8°C
(46°F)		 17°C
(64°F)		 24°C
(75°F)		 26°C
(79°F)		 25°C
(77°F)		 19°C
(67°F)		 10°C
(49°F)		 -0°C
(32°F)		 -6°C
(22°F)
Daily mean -13°C
(8°F)		 -15°C
(5°F)		 -5°C
(24°F)		 2°C
(36°F)		 11°C
(53°F)		 18°C
(65°F)		 20°C
(69°F)		 18°C
(65°F)		 13°C
(56°F)		 5°C
(41°F)		 -4°C
(24°F)		 -10°C
(15°F)
Average low -18°C
(0°F)		 -20°C
(-4°F)		 -9°C
(15°F)		 -3°C
(27°F)		 5°C
(42°F)		 12°C
(54°F)		 15°C
(59°F)		 12°C
(54°F)		 8°C
(47°F)		 0°C
(33°F)		 -9°C
(17°F)		 -14°C
(7°F)
Mean minimum -35°C
(-30°F)		 -33°C
(-27°F)		 -25°C
(-12°F)		 -13°C
(8°F)		 -3°C
(26°F)		 6°C
(43°F)		 8°C
(47°F)		 7°C
(44°F)		 1°C
(33°F)		 -8°C
(18°F)		 -19°C
(-2°F)		 -30°C
(-21°F)
Minimum -39°C
(-38°F)		 -41°C
(-42°F)		 -27°C
(-16°F)		 -20°C
(-3°F)		 -7°C
(20°F)		 3°C
(38°F)		 7°C
(45°F)		 5°C
(41°F)		 -2°C
(29°F)		 -9°C
(16°F)		 -23°C
(-10°F)		 -38°C
(-35°F)

Compare climate in Rolla with other places

Compare temperature, precipitation, sunshine, UV index in Rolla, North Dakota, United States with other places around the world.

Monthly average precipitation in Rolla, North Dakota, United States §

Rolla usually has the most precipitation in June, August and September, with an average of 8 rainy days and 74 mm (2.9 inches) of precipitation per month.The driest months in Rolla are January, February and April. On average, 18 mm (0.7 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Rolla, North Dakota, 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) 15 (0.6) 16 (0.6) 23 (0.9) 22 (0.9) 42 (1.7) 78 (3.1) 59 (2.3) 70 (2.8) 73 (2.9) 51 (2.0) 26 (1.0) 23 (0.9)
Average precipitation days (≥ 1 mm) 3 5 5 6 7 10 7 7 8 7 7 7

Monthly sunshine hours in Rolla, North Dakota, United States §

The sunniest months in Rolla are June, July and August, when the sun shines an average of 11 hours 46 minutes a day.Least sunny months in Rolla: January, November and December receive an average of 5 hours 4 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Rolla, North Dakota, 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 138 208 248 276 323 359 389 334 254 203 160 168
Mean daily daylight hours 8h 45m 10h 11m 11h 56m 13h 44m 15h 18m 16h 5m 15h 39m 14h 15m 12h 31m 10h 43m 9h 8m 8h 18m

Solar UV radiation in Rolla, North Dakota, United States §

Rolla experiences the highest level of ultraviolet (UV) radiation in April, June and July, when the maximum UV index can reach values of 8 - 9, which corresponds to the Very High category of sun exposure.January, November and December are in the Low exposure category. In these months, the maximum values of the UV index do not exceed 2. For more detailed information, check out our hourly Rolla UV Index data.

Average daily maximum UV levels by month for Rolla, North Dakota, 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 5 8 8 9 9 8 7 4 2 2