Chicago weather in 2023
Chicago weather in 2023, with 365 daily observations from Open-Meteo archive data.
Interactive graph
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Use the graph view to inspect 2023 alongside other available years for Chicago.
Year summary
In 2023, Chicago averaged 15.0 C for daily highs and 7.1 C for daily lows.
A 1991-2020 normal is not available for this location yet, so this page compares 2023 with the 2023-2025 archive baseline. The 2023 average daily high was -0.2 C from that baseline, and total precipitation was +209.2 mm from the baseline total.
The warmest month was July, with an average high of 26.4 C, while February had the lowest average low at -4.0 C.
The wettest month was July, totaling 308.5 mm. The hottest day reached 37.0 C on August 24, 2023.
Monthly averages and precipitation
| Month | Avg low C | Avg high C | Rain and snow mm | Days |
|---|---|---|---|---|
| January | -3.3 | 3.0 | 64.9 | 31 |
| February | -4.0 | 5.0 | 90.2 | 28 |
| March | -0.9 | 6.5 | 84.8 | 31 |
| April | 4.4 | 15.1 | 71.3 | 30 |
| May | 9.4 | 19.0 | 47.1 | 31 |
| June | 15.1 | 24.2 | 62.0 | 30 |
| July | 18.4 | 26.4 | 308.5 | 31 |
| August | 18.3 | 25.7 | 111.9 | 31 |
| September | 16.0 | 22.9 | 170.0 | 30 |
| October | 9.1 | 16.3 | 126.2 | 31 |
| November | 1.6 | 9.5 | 35.0 | 30 |
| December | 0.5 | 6.3 | 73.5 | 31 |
Daily records in 2023
| Record | Date | Value |
|---|---|---|
| Hottest day | August 24, 2023 | 37.0 C |
| Coldest night | January 31, 2023 | -19.5 C |
| Wettest day | July 2, 2023 | 137.8 mm |
Related pages
Weather data source: Open-Meteo Archive API. City metadata source: GeoNames cities15000.