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Monthly climate in Aurora, Illinois, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Aurora features a humid continental climate (Dfa).Temperatures typically range between -4 °C (26 °F) and 24 °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 1184 mm (46.6 inches) and receives 129 rainy days on the 1 mm (0.04 inches) threshold annually.Aurora enjoys an average of 2961 hours of sunshine throughout the year, and daylight varies from 9 hours 11 minutes to 15 hours 7 minutes per day.

Monthly average temperatures in Aurora, Illinois, United States §

The warmest months in Aurora are June, July and August, with daily mean temperatures ranging from 22 to 24 °C (72 - 76 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -4 to 0 °C (26 - 33 °F) throughout the day. On average each year, Aurora experiences 86 days above 25 °C (77.0 °F) and 111 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Aurora, 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 15°C
(59°F)		 21°C
(70°F)		 26°C
(79°F)		 29°C
(84°F)		 34°C
(93°F)		 34°C
(93°F)		 34°C
(94°F)		 34°C
(93°F)		 34°C
(93°F)		 31°C
(88°F)		 24°C
(76°F)		 19°C
(67°F)
Mean maximum 11°C
(51°F)		 14°C
(58°F)		 21°C
(69°F)		 27°C
(80°F)		 31°C
(88°F)		 33°C
(91°F)		 33°C
(91°F)		 32°C
(91°F)		 32°C
(90°F)		 29°C
(84°F)		 18°C
(64°F)		 16°C
(61°F)
Average high -0°C
(32°F)		 2°C
(36°F)		 9°C
(49°F)		 14°C
(58°F)		 21°C
(70°F)		 27°C
(81°F)		 28°C
(84°F)		 27°C
(82°F)		 25°C
(77°F)		 17°C
(63°F)		 8°C
(46°F)		 4°C
(40°F)
Daily mean -4°C
(26°F)		 -3°C
(28°F)		 4°C
(40°F)		 9°C
(49°F)		 16°C
(61°F)		 22°C
(72°F)		 24°C
(76°F)		 23°C
(73°F)		 20°C
(68°F)		 12°C
(54°F)		 4°C
(39°F)		 0°C
(33°F)
Average low -8°C
(19°F)		 -7°C
(19°F)		 -0°C
(31°F)		 4°C
(40°F)		 11°C
(52°F)		 17°C
(63°F)		 19°C
(67°F)		 18°C
(64°F)		 15°C
(58°F)		 8°C
(46°F)		 -1°C
(31°F)		 -4°C
(26°F)
Mean minimum -23°C
(-8°F)		 -22°C
(-8°F)		 -11°C
(13°F)		 -4°C
(25°F)		 3°C
(37°F)		 12°C
(54°F)		 14°C
(58°F)		 12°C
(53°F)		 7°C
(44°F)		 -1°C
(31°F)		 -11°C
(13°F)		 -14°C
(8°F)
Minimum -31°C
(-23°F)		 -34°C
(-29°F)		 -20°C
(-3°F)		 -8°C
(18°F)		 -2°C
(29°F)		 10°C
(50°F)		 13°C
(55°F)		 9°C
(49°F)		 2°C
(36°F)		 -5°C
(23°F)		 -16°C
(3°F)		 -21°C
(-6°F)

Compare climate in Aurora with other places

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

Monthly average precipitation in Aurora, Illinois, United States §

Aurora usually has the most precipitation in May, June and October, with an average of 13 rainy days and 146 mm (5.8 inches) of precipitation per month.The driest months in Aurora are January, November and December. On average, 58 mm (2.3 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Aurora, 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) 62 (2.5) 63 (2.5) 87 (3.4) 117 (4.6) 157 (6.2) 152 (6.0) 119 (4.7) 91 (3.6) 95 (3.8) 129 (5.1) 57 (2.3) 53 (2.1)
Average precipitation days (≥ 1 mm) 8 11 11 11 15 13 12 11 10 12 8 7

Monthly sunshine hours in Aurora, Illinois, United States §

The sunniest months in Aurora are June, July and August, when the sun shines an average of 11 hours 7 minutes a day.Least sunny months in Aurora: January, February and December receive an average of 5 hours 20 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Aurora, 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 119 180 229 242 283 330 357 334 282 220 194 186
Mean daily daylight hours 9h 32m 10h 36m 11h 58m 13h 21m 14h 32m 15h 7m 14h 48m 13h 45m 12h 25m 11h 1m 9h 49m 9h 11m

Solar UV radiation in Aurora, Illinois, United States §

Aurora 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, February 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 Aurora UV Index data.

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