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Monthly climate in Monroe, Iowa, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Monroe features a humid continental climate (Dfa).Temperatures typically range between -5 °C (23 °F) and 25 °C (77 °F) through the year, but rarely can drop to -30 °C (-22 °F) or can rise to as high as 37 °C (99 °F).The average annual precipitation amounts to about 1017 mm (40.0 inches) and receives 102 rainy days on the 1 mm (0.04 inches) threshold annually.Monroe enjoys an average of 3052 hours of sunshine throughout the year, and daylight varies from 9 hours 13 minutes to 15 hours 6 minutes per day.

Monthly average temperatures in Monroe, Iowa, United States §

The warmest months in Monroe are June, July and August, with daily mean temperatures ranging from 23 to 25 °C (74 - 77 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -5 to 0 °C (23 - 31 °F) throughout the day. On average each year, Monroe experiences 99 days above 25 °C (77.0 °F) and 116 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Monroe, Iowa, 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 14°C
(58°F)		 22°C
(72°F)		 23°C
(73°F)		 29°C
(85°F)		 35°C
(96°F)		 37°C
(99°F)		 36°C
(97°F)		 35°C
(96°F)		 33°C
(92°F)		 31°C
(88°F)		 24°C
(76°F)		 23°C
(73°F)
Mean maximum 11°C
(53°F)		 15°C
(60°F)		 21°C
(70°F)		 27°C
(80°F)		 32°C
(90°F)		 34°C
(93°F)		 34°C
(94°F)		 33°C
(92°F)		 32°C
(90°F)		 30°C
(86°F)		 19°C
(66°F)		 17°C
(63°F)
Average high -1°C
(31°F)		 1°C
(33°F)		 9°C
(49°F)		 15°C
(60°F)		 22°C
(72°F)		 28°C
(83°F)		 30°C
(86°F)		 28°C
(83°F)		 26°C
(79°F)		 17°C
(62°F)		 9°C
(48°F)		 4°C
(40°F)
Daily mean -5°C
(23°F)		 -4°C
(24°F)		 4°C
(40°F)		 10°C
(50°F)		 17°C
(63°F)		 23°C
(74°F)		 25°C
(77°F)		 23°C
(74°F)		 20°C
(69°F)		 12°C
(53°F)		 4°C
(39°F)		 -0°C
(31°F)
Average low -10°C
(15°F)		 -9°C
(15°F)		 -0°C
(32°F)		 4°C
(40°F)		 12°C
(54°F)		 18°C
(65°F)		 20°C
(68°F)		 18°C
(64°F)		 15°C
(59°F)		 7°C
(45°F)		 -1°C
(30°F)		 -5°C
(23°F)
Mean minimum -25°C
(-12°F)		 -23°C
(-9°F)		 -12°C
(11°F)		 -6°C
(22°F)		 4°C
(40°F)		 13°C
(55°F)		 15°C
(60°F)		 12°C
(55°F)		 7°C
(46°F)		 -3°C
(27°F)		 -11°C
(13°F)		 -15°C
(6°F)
Minimum -30°C
(-22°F)		 -30°C
(-22°F)		 -21°C
(-6°F)		 -10°C
(15°F)		 2°C
(35°F)		 9°C
(49°F)		 13°C
(56°F)		 11°C
(52°F)		 5°C
(42°F)		 -5°C
(24°F)		 -17°C
(2°F)		 -22°C
(-8°F)

Compare climate in Monroe with other places

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

Monthly average precipitation in Monroe, Iowa, United States §

Monroe usually has the most precipitation in May, June and October, with an average of 11 rainy days and 142 mm (5.6 inches) of precipitation per month.The driest months in Monroe are January, February and December. On average, 42 mm (1.7 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Monroe, Iowa, 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) 42 (1.7) 46 (1.8) 83 (3.3) 74 (2.9) 162 (6.4) 124 (4.9) 73 (2.9) 68 (2.7) 120 (4.7) 139 (5.5) 47 (1.9) 38 (1.5)
Average precipitation days (≥ 1 mm) 6 7 8 10 15 9 8 8 9 10 7 5

Monthly sunshine hours in Monroe, Iowa, United States §

The sunniest months in Monroe are June, July and August, when the sun shines an average of 11 hours 27 minutes a day.Least sunny months in Monroe: January, February and December receive an average of 5 hours 54 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Monroe, Iowa, 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 138 191 222 257 264 344 373 337 279 226 210 208
Mean daily daylight hours 9h 33m 10h 37m 11h 58m 13h 21m 14h 31m 15h 6m 14h 47m 13h 44m 12h 24m 11h 2m 9h 50m 9h 13m

Solar UV radiation in Monroe, Iowa, United States §

Monroe experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 9 - 11, which corresponds to the Very High / Extreme 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 Monroe UV Index data.

Average daily maximum UV levels by month for Monroe, Iowa, 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 11 10 9 8 6 4 3