nomadseason

Monthly climate in Bunker Hill, Illinois, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Bunker Hill 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 -23 °C (-8 °F) or can rise to as high as 37 °C (100 °F).The average annual precipitation amounts to about 1205 mm (47.4 inches) and receives 118 rainy days on the 1 mm (0.04 inches) threshold annually.Bunker Hill enjoys an average of 2979 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 Bunker Hill, Illinois, United States §

The warmest months in Bunker Hill 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, Bunker Hill experiences 119 days above 25 °C (77.0 °F) and 78 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Bunker Hill, 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)		 24°C
(75°F)		 26°C
(78°F)		 30°C
(86°F)		 35°C
(95°F)		 36°C
(97°F)		 37°C
(100°F)		 35°C
(95°F)		 34°C
(94°F)		 33°C
(92°F)		 25°C
(77°F)		 20°C
(69°F)
Mean maximum 16°C
(61°F)		 19°C
(67°F)		 23°C
(73°F)		 29°C
(84°F)		 32°C
(90°F)		 34°C
(93°F)		 35°C
(96°F)		 34°C
(93°F)		 33°C
(92°F)		 31°C
(88°F)		 22°C
(71°F)		 19°C
(66°F)
Average high 4°C
(39°F)		 6°C
(43°F)		 13°C
(55°F)		 18°C
(64°F)		 24°C
(76°F)		 30°C
(85°F)		 31°C
(88°F)		 29°C
(85°F)		 28°C
(82°F)		 20°C
(69°F)		 11°C
(53°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
(44°F)		 3°C
(38°F)
Average low -4°C
(25°F)		 -3°C
(26°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)		 2°C
(35°F)		 -1°C
(30°F)
Mean minimum -17°C
(2°F)		 -16°C
(4°F)		 -8°C
(17°F)		 -1°C
(30°F)		 6°C
(43°F)		 15°C
(59°F)		 16°C
(62°F)		 14°C
(57°F)		 9°C
(49°F)		 -0°C
(32°F)		 -7°C
(19°F)		 -12°C
(11°F)
Minimum -23°C
(-8°F)		 -19°C
(-1°F)		 -17°C
(1°F)		 -5°C
(23°F)		 3°C
(38°F)		 12°C
(54°F)		 15°C
(60°F)		 12°C
(54°F)		 7°C
(44°F)		 -3°C
(26°F)		 -13°C
(9°F)		 -20°C
(-4°F)

Compare climate in Bunker Hill with other places

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

Monthly average precipitation in Bunker Hill, Illinois, United States §

Bunker Hill usually has the most precipitation in March, April and May, with an average of 12 rainy days and 140 mm (5.5 inches) of precipitation per month.The driest months in Bunker Hill are September, November and December. On average, 65 mm (2.6 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Bunker Hill, 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) 75 (3.0) 80 (3.1) 133 (5.2) 132 (5.2) 156 (6.1) 111 (4.4) 100 (3.9) 120 (4.7) 64 (2.5) 102 (4.0) 75 (2.9) 57 (2.2)
Average precipitation days (≥ 1 mm) 8 10 12 11 13 11 10 10 6 11 9 7

Monthly sunshine hours in Bunker Hill, Illinois, United States §

The sunniest months in Bunker Hill are June, July and August, when the sun shines an average of 11 hours 2 minutes a day.Least sunny months in Bunker Hill: January, February and December receive an average of 5 hours 22 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Bunker Hill, 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 120 173 207 240 286 334 350 331 291 238 210 194
Mean daily daylight hours 9h 45m 10h 44m 11h 58m 13h 15m 14h 19m 14h 51m 14h 34m 13h 36m 12h 23m 11h 7m 10h 0m 9h 27m

Solar UV radiation in Bunker Hill, Illinois, United States §

Bunker Hill 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 Bunker Hill UV Index data.

Average daily maximum UV levels by month for Bunker Hill, 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