What is the hottest month in Aurora?

July is the warmest month in Aurora, with an average high of 84.0°F.

What is the coldest month in Aurora?

January is the coldest month in Aurora, with an average low of 16.0°F.

What month does Aurora get the most rain?

May is typically the wettest month in Aurora, with about 4.86 inches of precipitation.

What plant hardiness zone is Aurora in?

Aurora is approximately in USDA plant hardiness Zone 7a, based on the average annual extreme minimum temperature.

Has the climate in Aurora changed recently?

8.5% of Aurora's all-time daily heat records were set in the last decade (since 2015), compared to roughly 5% if records were evenly distributed over time.

Aurora, IL

Climate overview — based on NOAA 1991-2020 normals from AURORA, IL US.

Dfa Hot-summer humid continental climate 7a USDA hardiness Zone 7a

Year-round temperatures (°F)

Avg high Avg low

Climate summary

Aurora has an annual average temperature of 50.2°F with about 39.5 inches of precipitation per year and 27.9 inches of snow. The warmest month is July (average high 84.0°F), and the coldest is January (average low 16.0°F). May is typically the wettest month (4.86 in) and February the driest (1.83 in). Snow typically falls from November through April.

Pleasant months

2 / 12

avg high 65–80°F, low ≥ 50°F

Annual swing

51.2°F

warmest to coldest month

Heating need

6,003

HDD/yr

Cooling need

684

CDD/yr

Best time to visit Aurora

Full guide →

Climate change signal

All-time records →

31 of 366 (8.5%) of Aurora's all-time daily heat records have been set since 2015. If records were spread evenly across the station's history, only about 5% would fall in any given decade.

1890s		42
1900s		17
1910s		27
1920s		25
1930s		70
1940s		16
1950s		29
1960s		8
1970s		17
1980s		26
1990s		18
2000s		26
2010s		31
2020s		14

Bars: number of all-time daily heat records still standing that were set in each decade.

Monthly averages

Month	Avg High	Avg Low	Avg Temp	Precipitation	Snow	Rainy days
January	30.5°F	16.0°F	23.2°F	1.86 in	9.1 in	9
February	34.9°F	19.5°F	27.2°F	1.83 in	7.9 in	8
March	47.0°F	28.9°F	37.9°F	2.35 in	2.6 in	10
April	59.8°F	39.3°F	49.6°F	4.05 in	0.6 in	12
May	71.1°F	50.1°F	60.6°F	4.86 in	—	13
June	80.5°F	60.1°F	70.3°F	4.50 in	—	11
July	84.0°F	64.8°F	74.4°F	4.19 in	—	9
August	82.1°F	63.1°F	72.6°F	3.86 in	—	9
September	75.8°F	55.3°F	65.5°F	3.37 in	—	8
October	62.8°F	43.1°F	53.0°F	3.70 in	—	9
November	47.8°F	31.7°F	39.7°F	2.71 in	1.3 in	9
December	35.6°F	21.8°F	28.7°F	2.19 in	6.4 in	9