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Chicago vs Miami weather: climate comparison
Miami is the warmer of the two, averaging 77°F (25°C) over the year against 50°F (10°C) in Chicago. Miami is wetter, with 45.4 in (1154 mm) of precipitation a year to Chicago's 38.7 in (982 mm). Below: every month side by side, from 30 years of ERA5 data (1996–2025).
- Mean temperature
- 10.1°C Chicago
24.8°C Miami - Annual precipitation
- 982.3 mm Chicago
1154.4 mm Miami - Rainy days a year
- 121 Chicago
162 Miami - Sunshine per day
- 8.8 h Chicago
10.5 h Miami
Month by month
| Month | Chicago | Miami |
|---|---|---|
| January | -0.9°C | 23.3°C |
| February | 0.6°C | 24.3°C |
| March | 5.4°C | 25.4°C |
| April | 11.4°C | 26.9°C |
| May | 17.9°C | 28.4°C |
| June | 24.2°C | 29.3°C |
| July | 26.6°C | 30.3°C |
| August | 25.8°C | 30.4°C |
| September | 22.5°C | 29.5°C |
| October | 15.6°C | 28.1°C |
| November | 8.3°C | 26.0°C |
| December | 2.2°C | 24.4°C |
Year at a glance
| Measure | Chicago | Miami |
|---|---|---|
| Mean annual temperature | 10.1°C | 24.8°C |
| Warmest month (avg high) | Jul · 27°C | Aug · 30°C |
| Coldest month (avg low) | Jan · -7°C | Jan · 18°C |
| Annual range (warmest high − coldest low) | 34°C | 13°C |
| Annual precipitation | 982.3 mm | 1154.4 mm |
| Rainy days per year | 121 | 162 |
| Wettest / driest month | May / Feb | Jun / Feb |
| Average sunshine per day | 8.8 h | 10.5 h |
In short: Miami is the warmest overall (24.8°C mean); Miami gets the most precipitation (1154.4 mm a year); Miami is the sunniest (10.5 h a day on average); Miami has the smallest swing between its warmest and coldest months.
Record high 1996–2025: Chicago 37.4°C (2022-06-21), Miami 36.2°C (2024-05-16). Record low: Chicago -32.5°C (2019-01-31), Miami 3.3°C (2010-01-10).
Source: Open-Meteo Historical Weather API (CC BY 4.0). Values are ERA5 reanalysis model data on a ~9–25 km grid, not readings from a weather station, so a single town’s thermometer can differ by a few degrees and local showers can be missed. Monthly means of daily ERA5 values, 1996–2025, for the grid cells nearest Chicago (41.86, -87.65) and Miami (25.76, -80.20).
Which months differ most?
The gap in average highs is widest in January, when Miami runs 44°F / 24°C warmer, and narrowest in July (7°F / 4°C apart). The biggest rainfall difference is in September: Miami gets 3.7 in (93 mm) more on average.
Add a third or fourth city, or swap in any other place, in the full comparison tool. For one city in depth, see the Chicago climate and Miami climate pages.
Compare Chicago or Miami with another city
Questions people ask
Is Chicago warmer than Miami?
Miami is warmer on average: its mean annual temperature is 77°F (25°C) against 50°F (10°C) in Chicago (ERA5, 1996–2025).
Which gets more rain, Chicago or Miami?
Miami, with about 45.4 in (1154 mm) of precipitation a year and 162 days with at least 1 mm, compared with 38.7 in (982 mm) and 121 days in Chicago.
Which is sunnier, Chicago or Miami?
Miami averages more sunshine: 10.5 h a day against 8.8 h. Sunshine duration is modelled from cloud cover.
How reliable is this comparison?
Both cities use the same 30-year reanalysis, so differences are consistent. Absolute values describe a grid cell several kilometres wide and can differ by a degree or two from the airport station.