Chicago weather by month
The best time to visit Chicago, United States is September. Pick a month for full climate normals and a verdict.
- Januaryfreezing, a little rain, clean air40tier F
- Februaryfreezing, a little rain, clean air45tier F
- Marchcold, rainy, clean air62tier C
- Aprilcool, rainy, clean air74tier B
- Maynice, rainy83tier A
- Junewarm, rainy86tier A
- Julyhot, rainy79tier B
- Augusthot, a little rain81tier A
- Septemberwarm, rainy, clean air88tier A
- Octobercool, rainy, clean air73tier B
- Novembercold, a little rain, clean air66tier C
- Decembercold, a little rain, clean air52tier D