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VSWeather

Illinois weather by city

VSWeather covers 337 cities and towns in Illinois, from Chicago (population 2,707,648) down to South Barrington (population 5,004). Metropolis is the state's sunniest covered city at 205 sunny days a year. St. Charles is its snowiest at 46 in of snow in an average winter. Every figure is a 30 year average for 1991 to 2020.

Illinois climate standouts

The top 10 covered cities in the state for each measure.

Sunniest

  1. 1Metropolis 205 sunny days
  2. 2Carbondale 204 sunny days
  3. 3Murphysboro 204 sunny days
  4. 4Marion 204 sunny days
  5. 5Herrin 204 sunny days
  6. 6Carterville 204 sunny days
  7. 7Chester 204 sunny days
  8. 8Waterloo 204 sunny days
  9. 9Du Quoin 203 sunny days
  10. 10Pinckneyville 203 sunny days

Snowiest

  1. 1St. Charles 46 in of snow
  2. 2Lake Villa 43 in of snow
  3. 3Lindenhurst 43 in of snow
  4. 4Hawthorn Woods 43 in of snow
  5. 5Round Lake Beach 42 in of snow
  6. 6Geneva 42 in of snow
  7. 7Antioch 42 in of snow
  8. 8Grandwood Park 42 in of snow
  9. 9Mundelein 42 in of snow
  10. 10Oak Brook 42 in of snow

Rainiest

  1. 1Calumet City 133 wet days a year
  2. 2Lansing 133 wet days a year
  3. 3South Holland 133 wet days a year
  4. 4Dolton 133 wet days a year
  5. 5Sauk Village 133 wet days a year
  6. 6Steger 133 wet days a year
  7. 7Lynwood 133 wet days a year
  8. 8Glenwood 133 wet days a year
  9. 9Crete 133 wet days a year
  10. 10Chicago 132 wet days a year

Warmest

  1. 1Mascoutah 58 °F average
  2. 2Shiloh 58 °F average
  3. 3Metropolis 58 °F average
  4. 4O'Fallon 57 °F average
  5. 5Harrisburg 57 °F average
  6. 6Belleville 57 °F average
  7. 7Swansea 57 °F average
  8. 8Granite City 57 °F average
  9. 9Collinsville 57 °F average
  10. 10Fairview Heights 57 °F average

Popular Illinois comparisons

The state's biggest cities, head to head.

All covered Illinois cities and towns

Every place links to its full climate profile.

National rankings

See how Illinois cities place among the sunniest cities and snowiest cities and more in the US city weather rankings.

About this data

Figures are 30 year averages for 1991 to 2020, computed from daily climate history at each city's own coordinates. Sunny days count clear plus partly cloudy days; snowfall is anchored to NOAA station measurements. Methods and sources are described on the data sources page.

Weather data by Open-Meteo.com (CC BY 4.0). Contains modified Copernicus Climate Change Service information (ERA5, ERA5-Land).