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Monthly climate in Morrison, Illinois, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Morrison features a humid continental climate (Dfa).Temperatures typically range between -5 °C (24 °F) and 25 °C (76 °F) through the year, but rarely can drop to -34 °C (-29 °F) or can rise to as high as 34 °C (94 °F).The average annual precipitation amounts to about 1095 mm (43.1 inches) and receives 115 rainy days on the 1 mm (0.04 inches) threshold annually.Morrison enjoys an average of 2952 hours of sunshine throughout the year, and daylight varies from 9 hours 11 minutes to 15 hours 8 minutes per day.

Monthly average temperatures in Morrison, Illinois, United States §

The warmest months in Morrison are June, July and August, with daily mean temperatures ranging from 23 to 25 °C (73 - 76 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -5 to 0 °C (24 - 32 °F) throughout the day. On average each year, Morrison experiences 94 days above 25 °C (77.0 °F) and 112 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Morrison, Illinois, 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 13°C
(55°F)		 21°C
(70°F)		 25°C
(76°F)		 28°C
(83°F)		 34°C
(93°F)		 34°C
(93°F)		 34°C
(94°F)		 34°C
(94°F)		 34°C
(94°F)		 31°C
(89°F)		 24°C
(75°F)		 21°C
(69°F)
Mean maximum 9°C
(49°F)		 14°C
(57°F)		 20°C
(68°F)		 26°C
(80°F)		 31°C
(88°F)		 33°C
(91°F)		 33°C
(92°F)		 33°C
(91°F)		 32°C
(90°F)		 30°C
(86°F)		 18°C
(65°F)		 16°C
(61°F)
Average high -1°C
(31°F)		 1°C
(34°F)		 9°C
(49°F)		 15°C
(59°F)		 22°C
(71°F)		 28°C
(82°F)		 29°C
(85°F)		 28°C
(83°F)		 26°C
(79°F)		 17°C
(63°F)		 8°C
(47°F)		 4°C
(40°F)
Daily mean -5°C
(24°F)		 -3°C
(26°F)		 4°C
(40°F)		 9°C
(49°F)		 17°C
(62°F)		 23°C
(73°F)		 25°C
(76°F)		 23°C
(74°F)		 20°C
(69°F)		 12°C
(54°F)		 4°C
(39°F)		 0°C
(32°F)
Average low -9°C
(17°F)		 -8°C
(18°F)		 -0°C
(32°F)		 4°C
(40°F)		 12°C
(54°F)		 18°C
(64°F)		 20°C
(68°F)		 18°C
(64°F)		 15°C
(59°F)		 8°C
(46°F)		 -1°C
(31°F)		 -4°C
(25°F)
Mean minimum -23°C
(-10°F)		 -21°C
(-6°F)		 -11°C
(12°F)		 -4°C
(24°F)		 3°C
(38°F)		 13°C
(55°F)		 15°C
(60°F)		 13°C
(55°F)		 7°C
(45°F)		 -2°C
(29°F)		 -10°C
(14°F)		 -14°C
(7°F)
Minimum -31°C
(-24°F)		 -34°C
(-29°F)		 -20°C
(-4°F)		 -8°C
(18°F)		 -1°C
(31°F)		 9°C
(49°F)		 13°C
(56°F)		 12°C
(54°F)		 4°C
(39°F)		 -5°C
(24°F)		 -16°C
(4°F)		 -21°C
(-6°F)

Compare climate in Morrison with other places

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

Monthly average precipitation in Morrison, Illinois, United States §

Morrison usually has the most precipitation in May, June and October, with an average of 13 rainy days and 135 mm (5.3 inches) of precipitation per month.The driest months in Morrison are February, November and December. On average, 52 mm (2.1 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Morrison, Illinois, 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) 57 (2.3) 57 (2.3) 88 (3.5) 106 (4.2) 146 (5.7) 145 (5.7) 93 (3.7) 78 (3.1) 112 (4.4) 113 (4.4) 50 (2.0) 49 (1.9)
Average precipitation days (≥ 1 mm) 7 9 9 12 16 11 10 8 9 12 6 6

Monthly sunshine hours in Morrison, Illinois, United States §

The sunniest months in Morrison are June, July and August, when the sun shines an average of 11 hours 7 minutes a day.Least sunny months in Morrison: January, February and December receive an average of 5 hours 34 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Morrison, Illinois, 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 127 184 223 239 269 331 359 333 278 217 194 194
Mean daily daylight hours 9h 32m 10h 36m 11h 58m 13h 22m 14h 32m 15h 8m 14h 48m 13h 45m 12h 25m 11h 1m 9h 48m 9h 11m

Solar UV radiation in Morrison, Illinois, United States §

Morrison experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 9 - 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 4. For more detailed information, check out our hourly Morrison UV Index data.

Average daily maximum UV levels by month for Morrison, Illinois, 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 6 8 9 10 10 9 8 6 4 2