Frost Dates in Wisconsin

Afton - Janesville Wwtp April 26 – October 15 Alma Dam 4 April 28 – October 14 Amery May 5 – October 4 Antigo May 14 – September 30 Appleton May 4 – October 6 Arlington May 4 – October 6 Ashland 3s May 20 – October 2 Ashland Kennedy Mem AP May 23 – September 29 Augusta Rs May 7 – October 1 Baldwin May 6 – October 2 Baraboo May 5 – October 5 Bayfield 6 N May 20 – October 8 Bayfield Fish Hatchery May 23 – October 2 Beaver Dam Wwtp May 2 – October 9 Belgium Wwtp May 5 – October 12 Beloit May 1 – October 12 Berlin Wwtp May 1 – October 8 Big Falls Hydro May 7 – October 3 Blair May 9 – October 1 Bloomer May 5 – October 3 Boscobel AP May 3 – October 7 Brillion May 6 – October 6 Brodhead Wwtp April 29 – October 12 Brookfield Wwtp April 30 – October 14 Brule Rs May 24 – September 26 Burlington May 5 – October 9 Butternut 3sw May 22 – September 24 Cashton April 27 – October 14 Cashton 3nnw May 6 – October 3 Charmany Farm April 28 – October 15 Chilton May 1 – October 14 Clam Lake 4w May 16 – September 30 Clinton Wwtp April 30 – October 10 Clintonville May 4 – October 6 Couderay 7 W Always frozen Crivitz High Falls May 26 – September 22 Cumberland May 5 – October 4 Dalton May 6 – October 2 Danbury May 11 – September 30 Darlington Wwtp May 3 – October 4 Delavan Wwtp April 28 – October 14 Denmark Wwtp May 6 – October 12 Dodge May 5 – October 5 Dodgeville Wwtp May 3 – October 7 Drummond May 20 – October 1 Durand May 1 – October 10 Eagle Rvr May 25 – September 24 Eau Claire 3sw April 24 – October 14 Eau Claire Rgnl AP May 8 – October 4 Ellsworth 1e May 13 – September 29 Ephraim 1ne-Wwtp May 14 – October 18 Florence May 24 – September 25 Fond Du Lac 2 Sw April 27 – October 19 Fond Du Lac Co AP May 1 – October 10 Fond Du Lac Wwtp May 1 – October 12 Forestville-4e May 6 – October 17 Foxboro June 1 – September 22 Friendship May 9 – October 3 Ft Atkinson April 28 – October 13 Gays Mills May 3 – October 7 Genoa Dam 8 April 22 – October 17 Germantown May 6 – October 8 Goodman Sanitary Dist May 24 – September 30 Gordon May 22 – September 26 Grafton Wwtp April 23 – October 24 Grantsburg May 11 – October 1 Green Bay April 30 – October 9 Green Bay Botanical May 7 – October 9 Green Bay Wfo May 1 – October 11 Hales Corners/Whitnall Park/Bo May 3 – October 14 Hancock Exp Farm May 10 – October 3 Hartford Wwtp May 8 – October 3 Hayward Muni AP May 23 – September 22 Hayward Rs May 22 – September 23 Hillsboro May 5 – October 4 Hillsboro 2sw May 12 – September 29 Hingham Wwtp May 3 – October 16 Holcombe May 5 – October 2 Horicon Wwtp May 1 – October 10 Hurley May 24 – September 28 Hustisford Wwtp April 28 – October 10 Jackson April 30 – October 15 Jefferson Wwtp April 25 – October 18 Jim Falls 3nw May 1 – October 8 Jump Rvr 3e May 20 – September 23 Kenosha April 19 – October 26 Kenosha Rgnl AP April 28 – October 19 Kewaunee May 1 – October 18 La Crosse Muni AP April 23 – October 17 La Crosse Wfo April 27 – October 13 Ladysmith 3w May 27 – September 22 Lake Geneva Wwtp April 25 – October 21 Lake Mills Wwtp April 29 – October 14 Lakewood 3 Ne May 22 – September 28 Lancaster 4 Wsw April 27 – October 11 Laona 6 Sw May 19 – September 29 Lodi May 1 – October 10 Lone Rock Tri Co AP April 30 – October 9 LuckMay 6 – October 4 Lynxville Dam 9 April 24 – October 17 Madeline Island May 20 – October 9 Madison Dane Rgnl AP May 1 – October 10 Manitowoc April 30 – October 20 Marinette May 4 – October 11 Markesan May 8 – October 2 Marshfield Exp Farm May 5 – October 5 Marshfield Muni AP May 5 – October 5 Mather 3 Nw May 6 – October 3 Mauston 1 Se May 2 – October 7 Mazomanie Wwtp May 7 – October 1 Medford May 11 – October 1 Mellen 4 Ne May 26 – September 27 Menomonie May 9 – October 1 Merrill May 11 – September 30 Milwaukee Mitchell AP April 19 – October 29 Minocqua May 23 – September 27 Minong 5 Wsw May 10 – October 4 Mondovi May 10 – October 2 Monroe Wwtp April 27 – October 14 Montello May 3 – October 5 Mt Mary College April 26 – October 18 Necedah May 17 – September 25 Necedah 5 Wnw May 1 – October 3 Neillsville 3ese May 10 – October 1 New London May 4 – October 6 North Pelican June 3 – September 18 Oconomowoc Wwtp April 30 – October 12 Oconto 4 W May 9 – October 6 Oshkosh April 24 – October 20 Oshkosh Wittman AP April 30 – October 13 Owen 1e May 13 – September 26 Paddock Lake April 30 – October 15 Park Falls Dnr Hq May 15 – September 28 Pattison Ranger Staion May 18 – October 3 Pell Lake April 30 – October 13 Peshtigo May 11 – October 5 Platteville April 30 – October 13 Plymouth Wwtp May 3 – October 10 Port Washington April 27 – October 22 Port Wing May 31 – October 2 Portage Wwtp April 28 – October 10 Prairie Du Chien April 28 – October 12 Prentice #2 May 23 – September 23 Racine April 20 – October 24 Racine Batten AP April 24 – October 24 Reedsburg May 2 – October 7 Rest Lake May 25 – September 21 Rhinelander May 22 – September 24 Rhinelander 4ne May 23 – September 23 Rhinelander Oneida AP May 26 – September 23 Rice Lake May 8 – October 2 Rice Rsvr Tomahawk-2 May 10 – October 4 Richfield 3 Ssw April 30 – October 16 Richland Ctr May 5 – October 6 Ridgeland 1nne May 10 – September 29 Ripon 5 Ne May 1 – October 11 River Falls May 11 – October 1 Rochester Wwtp May 5 – October 10 Rock Springs 3 Sw April 24 – October 20 Rosholt 9 Nne May 6 – October 5 Sauk City Wwtp May 4 – October 6 Saukville Wwtp May 5 – October 11 Saxon 1wsw May 23 – October 1 Shawano 2ssw May 9 – October 2 Sheboygan April 25 – October 23 Sheboygan Co Mem AP May 5 – October 8 Sheboygan Wwtp May 2 – October 21 Slinger Wwtp May 5 – October 5 Solon Springs May 12 – October 2 South Milwaukee Wwtp April 22 – October 26 Sparta May 9 – October 1 Spooner Ag Res Stn May 14 – September 28 St Croix Falls May 4 – October 8 St Germain May 19 – October 3 Stanley Wwtp May 7 – October 3 Steuben 4 Se April 22 – October 20 Stevens Pt May 4 – October 7 Stockbridge-Munsee Rsvn May 13 – September 30 Stoughton April 30 – October 11 Sturgeon Bay Exp Farm May 8 – October 13 Sullivan 3se May 3 – October 9 Superior May 6 – October 9 Suring May 14 – October 1 Town Of Westford May 1 – October 11 Trempealeau Dam 6 April 29 – October 11 Two Rivers April 27 – October 21 Union Grove May 5 – October 8 Uw Arboretum - Madison May 1 – October 9 Viroqua May 7 – October 2 W Bend Public Works May 1 – October 12 Washington Is May 15 – October 14 Waterloo Wwtp April 30 – October 9 Watertown Wwtp April 28 – October 12 Waukesha Wwtp May 1 – October 13 Waupaca May 8 – October 6 Wausau Dwtn AP May 6 – October 4 West Allis April 26 – October 22 West Bend May 4 – October 11 Weyerhaeuser 1n May 9 – September 29 Whitewater May 2 – October 9 Willow Rsvr May 13 – October 3 Winter May 19 – September 27 Wisconsin Dells May 8 – October 3 Wisconsin Rapids May 9 – September 30 Wisconsin Rapids Alexander Fld May 8 – October 1