Aurora, Illinois, United States climate
Average temperatures, precipitation and all-time records for Aurora, Illinois, United States, with every day graded against ~45 years of local climate history (1981–2026). Its warmest month is July, averaging a high of 84°F, and its coldest is January, with an average low of 12°F.
Aurora is a city in northeastern Illinois, United States, located along the Fox River. The population was 180,542 at the 2020 census. It is the second-most populous city in Illinois, after Chicago, and the 144th-most populous city in the US. via Wikipedia
How today compares
Latest recorded day: 2026-07-21. Each reading placed on Aurora, Illinois, United States's own ±7-day seasonal distribution.
Aurora average temperatures by month
Typical daily high and low, and average precipitation, for each month in Aurora, Illinois, United States, based on 1981–2026 records. The wettest month is July (0.20 in on an average day).
| Month | Avg high | Avg low | Avg precip |
|---|---|---|---|
| January | 28°F | 12°F | 0.10 in |
| February | 34°F | 17°F | 0.10 in |
| March | 46°F | 27°F | 0.10 in |
| April | 58°F | 37°F | 0.10 in |
| May | 69°F | 47°F | 0.10 in |
| June | 80°F | 58°F | 0.10 in |
| July | 84°F | 64°F | 0.20 in |
| August | 82°F | 62°F | 0.10 in |
| September | 76°F | 55°F | 0.10 in |
| October | 62°F | 42°F | 0.10 in |
| November | 47°F | 30°F | 0.10 in |
| December | 33°F | 19°F | 0.10 in |
Each bar spans the 10th-percentile daily low to the 90th-percentile daily high (the range most days fall within), coloured cold → hot on a shared -10°F to 115°F scale, so the whole year's rhythm reads at a glance.
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Record extremes
- Hottest day on record: 105°F on 2005-07-24
- Coldest day on record: -38°F on 1982-01-17
Percentiles compare each day to Aurora, Illinois, United States's own history, so grades are relative to this location: a “Near Record” day here isn't the same temperature as elsewhere. How the grades work →