Best time to visit Chicago
Our pick for sun: July to August.
The best months
- SunJuly to August
- CitySeptember
…
The twelve months at a glance
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sun | Best avoided, 20/100 | Best avoided, 20/100 | Best avoided, 20/100 | Best avoided, 20/100 | Fair, 47/100 | Good, 78/100 | Ideal, 80/100 | Ideal, 83/100 | Good, 76/100 | Best avoided, 20/100 | Best avoided, 20/100 | Best avoided, 20/100 |
| City | Best avoided, 20/100 | Best avoided, 20/100 | Best avoided, 28/100 | Fair, 55/100 | Good, 74/100 | Good, 74/100 | Good, 69/100 | Good, 75/100 | Ideal, 80/100 | Good, 73/100 | Fair, 46/100 | Best avoided, 20/100 |
- Ideal
- Good
- Fair
- Best avoided
- Risk flagged
Temperatures and rain
See the month-by-month values
| Month | High | Low | Rain |
|---|---|---|---|
| January | -1°C | -7°C | 64 mm |
| February | 1°C | -6°C | 57 mm |
| March | 6°C | -1°C | 70 mm |
| April | 12°C | 4°C | 111 mm |
| May | 18°C | 11°C | 107 mm |
| June | 25°C | 17°C | 96 mm |
| July | 27°C | 20°C | 90 mm |
| August | 26°C | 19°C | 96 mm |
| September | 23°C | 15°C | 78 mm |
| October | 16°C | 8°C | 86 mm |
| November | 8°C | 2°C | 71 mm |
| December | 2°C | -3°C | 64 mm |
Estimated flight time
- From YUL : about 2 h 10 min
- From YYZ : about 1 h 35 min
- From YVR : about 4 h 05 min
Estimate of a nonstop flight computed from the distance: not a schedule. Connections lengthen the trip.
Getting to Chicago with points
Keep going
Where this data comes from
Temperatures, sunshine and rain: monthly normals we computed over 1991-2020. These are estimates from a climate reanalysis, not station readings.
- ERA5 reanalysis-era5-single-levels-timeseries (C3S, CC-BY)
Contains modified Copernicus Climate Change Service information (ERA5, 2026, CC BY 4.0 licence). Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains. Sea temperature: NOAA OISST v2.1 (Huang et al., 2021, J. Climate 34, doi:10.1175/JCLI-D-20-0166.1).