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Monthly climate in Forest City, Iowa, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Forest City features a humid continental climate (Dfa).Temperatures typically range between -8 °C (18 °F) and 23 °C (74 °F) through the year, but rarely can drop to -35 °C (-31 °F) or can rise to as high as 36 °C (97 °F).The average annual precipitation amounts to about 1054 mm (41.5 inches) and receives 108 rainy days on the 1 mm (0.04 inches) threshold annually.Forest City enjoys an average of 2985 hours of sunshine throughout the year, and daylight varies from 9 hours 1 minutes to 15 hours 19 minutes per day.

Monthly average temperatures in Forest City, Iowa, United States §

The warmest months in Forest City are June, July and August, with daily mean temperatures ranging from 21 to 23 °C (71 - 74 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -8 to -3 °C (18 - 27 °F) throughout the day. On average each year, Forest City experiences 79 days above 25 °C (77.0 °F) and 137 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Forest City, 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 10°C
(51°F)		 19°C
(67°F)		 23°C
(74°F)		 28°C
(83°F)		 35°C
(95°F)		 36°C
(97°F)		 34°C
(94°F)		 36°C
(97°F)		 33°C
(93°F)		 30°C
(87°F)		 25°C
(78°F)		 20°C
(68°F)
Mean maximum 8°C
(48°F)		 9°C
(49°F)		 19°C
(66°F)		 25°C
(77°F)		 32°C
(89°F)		 33°C
(91°F)		 34°C
(93°F)		 31°C
(89°F)		 32°C
(89°F)		 28°C
(83°F)		 18°C
(64°F)		 14°C
(57°F)
Average high -3°C
(27°F)		 -3°C
(26°F)		 6°C
(43°F)		 13°C
(56°F)		 21°C
(70°F)		 27°C
(82°F)		 28°C
(83°F)		 26°C
(80°F)		 24°C
(76°F)		 15°C
(58°F)		 6°C
(44°F)		 1°C
(35°F)
Daily mean -8°C
(19°F)		 -8°C
(18°F)		 1°C
(35°F)		 7°C
(46°F)		 15°C
(60°F)		 22°C
(72°F)		 23°C
(74°F)		 21°C
(71°F)		 19°C
(66°F)		 10°C
(49°F)		 2°C
(35°F)		 -3°C
(27°F)
Average low -12°C
(11°F)		 -13°C
(9°F)		 -3°C
(27°F)		 2°C
(36°F)		 10°C
(51°F)		 17°C
(63°F)		 18°C
(65°F)		 16°C
(62°F)		 13°C
(56°F)		 5°C
(41°F)		 -3°C
(27°F)		 -7°C
(19°F)
Mean minimum -25°C
(-13°F)		 -26°C
(-15°F)		 -15°C
(4°F)		 -8°C
(18°F)		 2°C
(36°F)		 10°C
(51°F)		 13°C
(55°F)		 10°C
(51°F)		 5°C
(42°F)		 -4°C
(25°F)		 -13°C
(9°F)		 -19°C
(-3°F)
Minimum -34°C
(-28°F)		 -35°C
(-31°F)		 -25°C
(-13°F)		 -15°C
(6°F)		 0°C
(33°F)		 8°C
(47°F)		 12°C
(54°F)		 9°C
(49°F)		 3°C
(37°F)		 -9°C
(16°F)		 -17°C
(1°F)		 -23°C
(-10°F)

Compare climate in Forest City with other places

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

Monthly average precipitation in Forest City, Iowa, United States §

Forest City usually has the most precipitation in May, June and August, with an average of 12 rainy days and 136 mm (5.4 inches) of precipitation per month.The driest months in Forest City are January, November and December. On average, 39 mm (1.5 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Forest City, 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) 34 (1.4) 47 (1.9) 72 (2.9) 87 (3.4) 158 (6.2) 129 (5.1) 105 (4.1) 122 (4.8) 108 (4.3) 108 (4.3) 45 (1.8) 38 (1.5)
Average precipitation days (≥ 1 mm) 5 7 9 10 14 13 8 10 10 11 6 5

Monthly sunshine hours in Forest City, Iowa, United States §

The sunniest months in Forest City are June, July and August, when the sun shines an average of 11 hours 17 minutes a day.Least sunny months in Forest City: January, February and December receive an average of 5 hours 48 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Forest City, 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 137 195 226 242 268 341 369 328 259 219 199 196
Mean daily daylight hours 9h 22m 10h 31m 11h 58m 13h 26m 14h 41m 15h 19m 14h 58m 13h 51m 12h 26m 10h 58m 9h 40m 9h 1m

Solar UV radiation in Forest City, Iowa, United States §

Forest City 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 3. For more detailed information, check out our hourly Forest City UV Index data.

Average daily maximum UV levels by month for Forest City, 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 5 8 9 11 10 9 8 5 3 3