Frost dates in Illinois

Average last frost dates in Illinois run from April 4 in Alton to May 1 in Cary.

Average frost dates for 225 places in Illinois
Place	Last frost	First frost
Addison	Apr 16	Oct 28
Algonquin	Apr 26	Oct 18
Alsip	Apr 10	Nov 1
Alton	Apr 4	Nov 5
Antioch	Apr 23	Oct 21
Arlington Heights	Apr 19	Oct 26
Aurora	Apr 19	Oct 23
Barrington	Apr 25	Oct 19
Bartlett	Apr 30	Oct 13
Batavia	Apr 19	Oct 23
Beach Park	Apr 30	Oct 21
Belleville	Apr 12	Oct 20
Bellwood	Apr 16	Oct 28
Belvidere	Apr 24	Oct 17
Bensenville	Apr 16	Oct 28
Berwyn	Apr 11	Oct 31
Bloomingdale	Apr 30	Oct 13
Bloomington	Apr 25	Oct 16
Blue Island	Apr 10	Nov 1
Bolingbrook	Apr 20	Oct 22
Bourbonnais	Apr 19	Oct 24
Bradley	Apr 19	Oct 24
Bridgeview	Apr 10	Nov 1
Brookfield	Apr 11	Oct 31
Buffalo Grove	Apr 19	Oct 26
Burbank	Apr 10	Nov 1
Burr Ridge	Apr 19	Oct 22
Cahokia Heights	Apr 8	Oct 26
Calumet City	Apr 23	Oct 20
Campton Hills	Apr 25	Oct 19
Canton	Apr 17	Oct 19
Carbondale	Apr 9	Oct 22
Carol Stream	Apr 25	Oct 19
Carpentersville	Apr 26	Oct 18
Cary	May 1	Oct 11
Centralia	Apr 9	Oct 24
Champaign	Apr 15	Oct 24
Channahon	Apr 16	Oct 26
Charleston	Apr 15	Oct 23
Chatham	Apr 15	Oct 22
Chicago	Apr 10	Nov 5
Chicago Heights	Apr 23	Oct 20
Chicago Ridge	Apr 10	Nov 1
Cicero	Apr 11	Oct 31
Collinsville	Apr 8	Oct 26
Columbia	Apr 6	Oct 27
Country Club Hills	Apr 23	Oct 20
Crest Hill	Apr 20	Oct 22
Crestwood	Apr 10	Nov 1
Crystal Lake	Apr 25	Oct 22
Danville	Apr 21	Oct 20
Darien	Apr 19	Oct 22
Decatur	Apr 14	Oct 24
Deerfield	Apr 26	Oct 21
DeKalb	Apr 24	Oct 18
Des Plaines	Apr 16	Oct 28
Dixon	Apr 21	Oct 19
Dolton	Apr 23	Oct 20
Downers Grove	Apr 28	Oct 16
East Moline	Apr 16	Oct 25
East Peoria	Apr 16	Oct 23
East St. Louis	Apr 8	Oct 26
Edwardsville	Apr 4	Nov 5
Effingham	Apr 13	Oct 24
Elgin	Apr 26	Oct 18
Elk Grove Village	Apr 16	Oct 28
Elmhurst	Apr 16	Oct 28
Elmwood Park	Apr 16	Oct 28
Evanston	Apr 26	Oct 21
Evergreen Park	Apr 10	Nov 1
Fairview Heights	Apr 8	Oct 26
Forest Park	Apr 11	Oct 31
Fox Lake	Apr 23	Oct 21
Frankfort	Apr 23	Oct 20
Franklin Park	Apr 16	Oct 28
Freeport	Apr 26	Oct 13
Galesburg	Apr 20	Oct 19
Geneva	Apr 25	Oct 19
Glen Carbon	Apr 4	Nov 5
Glen Ellyn	Apr 28	Oct 16
Glendale Heights	Apr 28	Oct 16
Glenview	Apr 26	Oct 21
Godfrey	Apr 4	Nov 5
Granite City	Apr 4	Nov 5
Grayslake	Apr 29	Oct 20
Gurnee	Apr 30	Oct 19
Hanover Park	Apr 30	Oct 13
Harvey	Apr 23	Oct 20
Hazel Crest	Apr 23	Oct 20
Herrin	Apr 9	Oct 22
Hickory Hills	Apr 19	Oct 22
Highland	Apr 12	Oct 20
Highland Park	Apr 26	Oct 21
Hinsdale	Apr 19	Oct 22
Hoffman Estates	Apr 30	Oct 13
Homer Glen	Apr 20	Oct 22
Homewood	Apr 23	Oct 20
Huntley	Apr 25	Oct 22
Jacksonville	Apr 17	Oct 21
Joliet	Apr 19	Oct 25
Justice	Apr 10	Nov 1
Kankakee	Apr 19	Oct 24
Kewanee	Apr 24	Oct 17
La Grange	Apr 11	Oct 31
La Grange Park	Apr 11	Oct 31
Lake Forest	Apr 26	Oct 21
Lake in the Hills	Apr 25	Oct 22
Lake Zurich	Apr 29	Oct 20
Lansing	Apr 23	Oct 20
Lemont	Apr 19	Oct 22
Libertyville	Apr 29	Oct 20
Lincoln	Apr 20	Oct 16
Lincolnwood	Apr 26	Oct 21
Lindenhurst	Apr 24	Oct 23
Lisle	Apr 28	Oct 16
Lockport	Apr 20	Oct 22
Lombard	Apr 28	Oct 16
Loves Park	Apr 24	Oct 17
Lyons	Apr 11	Oct 31
Machesney Park	May 1	Oct 12
Macomb	Apr 17	Oct 22
Mahomet	Apr 23	Oct 13
Manhattan	Apr 19	Oct 25
Marion	Apr 9	Oct 22
Markham	Apr 23	Oct 20
Matteson	Apr 23	Oct 20
Mattoon	Apr 11	Oct 29
Maywood	Apr 11	Oct 31
McHenry	May 1	Oct 11
Melrose Park	Apr 16	Oct 28
Midlothian	Apr 10	Nov 1
Minooka	Apr 16	Oct 26
Mokena	Apr 23	Oct 20
Moline	Apr 24	Oct 18
Montgomery	Apr 19	Oct 23
Morris	Apr 20	Oct 23
Morton	Apr 21	Oct 17
Morton Grove	Apr 26	Oct 21
Mount Prospect	Apr 19	Oct 26
Mount Vernon	Apr 11	Oct 22
Mundelein	Apr 29	Oct 20
Naperville	Apr 28	Oct 16
New Lenox	Apr 19	Oct 25
Niles	Apr 16	Oct 28
Normal	Apr 25	Oct 16
Norridge	Apr 16	Oct 28
North Aurora	Apr 19	Oct 23
North Chicago	Apr 30	Oct 19
Northbrook	Apr 26	Oct 21
Northlake	Apr 16	Oct 28
O'Fallon	Apr 12	Oct 20
Oak Forest	Apr 23	Oct 20
Oak Lawn	Apr 10	Nov 1
Oak Park	Apr 11	Oct 31
Orland Park	Apr 19	Oct 22
Oswego	Apr 19	Oct 23
Ottawa	Apr 27	Oct 17
Palatine	Apr 25	Oct 19
Palos Heights	Apr 10	Nov 1
Palos Hills	Apr 19	Oct 22
Park Forest	Apr 23	Oct 20
Park Ridge	Apr 16	Oct 28
Pekin	Apr 16	Oct 23
Peoria	Apr 16	Oct 23
Pingree Grove	Apr 26	Oct 18
Plainfield	Apr 20	Oct 22
Plano	Apr 28	Oct 13
Pontiac	Apr 16	Oct 24
Prospect Heights	Apr 19	Oct 26
Quincy	Apr 8	Oct 30
Rantoul	Apr 21	Oct 18
Richton Park	Apr 23	Oct 20
River Forest	Apr 11	Oct 31
River Grove	Apr 16	Oct 28
Riverdale	Apr 10	Nov 1
Rock Island	Apr 24	Oct 18
Rockford	Apr 24	Oct 17
Rolling Meadows	Apr 19	Oct 26
Romeoville	Apr 20	Oct 22
Roscoe	May 1	Oct 12
Roselle	Apr 30	Oct 13
Round Lake	Apr 29	Oct 20
Round Lake Beach	Apr 24	Oct 23
Schaumburg	Apr 30	Oct 13
Schiller Park	Apr 16	Oct 28
Shiloh	Apr 12	Oct 20
Shorewood	Apr 19	Oct 25
Skokie	Apr 26	Oct 21
South Elgin	Apr 26	Oct 18
South Holland	Apr 23	Oct 20
Springfield	Apr 15	Oct 22
St. Charles	Apr 25	Oct 19
Sterling	Apr 21	Oct 19
Streamwood	Apr 30	Oct 13
Streator	Apr 12	Oct 28
Summit	Apr 11	Oct 31
Swansea	Apr 12	Oct 20
Sycamore	Apr 24	Oct 18
Taylorville	Apr 12	Oct 20
Tinley Park	Apr 23	Oct 20
Troy	Apr 12	Oct 20
Urbana	Apr 15	Oct 24
Vernon Hills	Apr 29	Oct 20
Villa Park	Apr 28	Oct 16
Warrenville	Apr 28	Oct 16
Washington	Apr 21	Oct 17
Waterloo	Apr 9	Oct 26
Wauconda	Apr 29	Oct 20
Waukegan	Apr 30	Oct 19
West Chicago	Apr 25	Oct 19
Westchester	Apr 11	Oct 31
Western Springs	Apr 19	Oct 22
Westmont	Apr 28	Oct 16
Wheaton	Apr 28	Oct 16
Wheeling	Apr 19	Oct 26
Wilmette	Apr 26	Oct 21
Winfield	Apr 25	Oct 19
Winnetka	Apr 26	Oct 21
Wood Dale	Apr 16	Oct 28
Wood River	Apr 4	Nov 5
Woodridge	Apr 28	Oct 16
Woodstock	Apr 25	Oct 22
Worth	Apr 10	Nov 1
Yorkville	Apr 28	Oct 13
Zion	Apr 30	Oct 21

Source: NOAA U.S. Climate Normals 1991–2020, nearest station to each place. Places of 10,000+ people (US Census Bureau, 2024 estimates) within 50 miles of a station.

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