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Monthly climate in Coffeen, Illinois, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Coffeen features a humid subtropical climate (Cfa).Temperatures typically range between 0 °C (32 °F) and 26 °C (79 °F) through the year, but rarely can drop to -22 °C (-7 °F) or can rise to as high as 38 °C (100 °F).The average annual precipitation amounts to about 1229 mm (48.4 inches) and receives 117 rainy days on the 1 mm (0.04 inches) threshold annually.Coffeen enjoys an average of 3002 hours of sunshine throughout the year, and daylight varies from 9 hours 27 minutes to 14 hours 51 minutes per day.

Monthly average temperatures in Coffeen, Illinois, United States §

The warmest months in Coffeen are June, July and August, with daily mean temperatures ranging from 24 to 26 °C (76 - 79 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 0 to 3 °C (32 - 38 °F) throughout the day. On average each year, Coffeen experiences 119 days above 25 °C (77.0 °F) and 80 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Coffeen, 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 19°C
(66°F)		 23°C
(74°F)		 25°C
(77°F)		 29°C
(85°F)		 34°C
(94°F)		 36°C
(97°F)		 38°C
(100°F)		 34°C
(94°F)		 34°C
(93°F)		 33°C
(92°F)		 25°C
(76°F)		 20°C
(68°F)
Mean maximum 16°C
(60°F)		 19°C
(67°F)		 23°C
(73°F)		 28°C
(83°F)		 32°C
(91°F)		 34°C
(94°F)		 35°C
(96°F)		 33°C
(92°F)		 33°C
(91°F)		 31°C
(88°F)		 21°C
(71°F)		 18°C
(66°F)
Average high 4°C
(39°F)		 6°C
(44°F)		 13°C
(55°F)		 18°C
(64°F)		 24°C
(76°F)		 30°C
(86°F)		 31°C
(88°F)		 29°C
(85°F)		 28°C
(82°F)		 20°C
(69°F)		 11°C
(52°F)		 8°C
(47°F)
Daily mean -0°C
(32°F)		 1°C
(35°F)		 8°C
(46°F)		 12°C
(55°F)		 19°C
(67°F)		 25°C
(77°F)		 26°C
(79°F)		 24°C
(76°F)		 22°C
(72°F)		 15°C
(59°F)		 6°C
(43°F)		 3°C
(38°F)
Average low -4°C
(25°F)		 -3°C
(27°F)		 3°C
(38°F)		 7°C
(45°F)		 15°C
(59°F)		 20°C
(68°F)		 22°C
(71°F)		 19°C
(67°F)		 17°C
(62°F)		 10°C
(50°F)		 1°C
(35°F)		 -1°C
(30°F)
Mean minimum -16°C
(3°F)		 -16°C
(4°F)		 -9°C
(17°F)		 -1°C
(30°F)		 6°C
(42°F)		 15°C
(59°F)		 16°C
(62°F)		 13°C
(56°F)		 9°C
(48°F)		 -0°C
(32°F)		 -7°C
(19°F)		 -11°C
(12°F)
Minimum -22°C
(-7°F)		 -19°C
(-2°F)		 -17°C
(1°F)		 -5°C
(24°F)		 3°C
(38°F)		 12°C
(54°F)		 15°C
(60°F)		 12°C
(54°F)		 7°C
(44°F)		 -4°C
(26°F)		 -12°C
(10°F)		 -18°C
(0°F)

Compare climate in Coffeen with other places

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

Monthly average precipitation in Coffeen, Illinois, United States §

Coffeen usually has the most precipitation in March, April and May, with an average of 12 rainy days and 146 mm (5.7 inches) of precipitation per month.The driest months in Coffeen are January, September and December. On average, 68 mm (2.7 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Coffeen, 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) 79 (3.1) 81 (3.2) 133 (5.2) 143 (5.6) 161 (6.3) 110 (4.3) 98 (3.9) 113 (4.4) 61 (2.4) 107 (4.2) 79 (3.1) 63 (2.5)
Average precipitation days (≥ 1 mm) 8 10 12 11 13 11 9 11 6 10 9 7

Monthly sunshine hours in Coffeen, Illinois, United States §

The sunniest months in Coffeen are June, July and August, when the sun shines an average of 11 hours 6 minutes a day.Least sunny months in Coffeen: January, February and December receive an average of 5 hours 23 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Coffeen, 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 120 174 209 246 288 339 352 330 294 239 210 195
Mean daily daylight hours 9h 45m 10h 44m 11h 58m 13h 15m 14h 19m 14h 51m 14h 33m 13h 36m 12h 23m 11h 7m 10h 0m 9h 27m

Solar UV radiation in Coffeen, Illinois, United States §

Coffeen experiences the highest level of ultraviolet (UV) radiation in May, June and July, when the maximum UV index can reach values of 10 - 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 Coffeen UV Index data.

Average daily maximum UV levels by month for Coffeen, 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 9 10 11 11 9 9 6 4 3