Minnesota climate

Minnesota Frost Dates

The median last spring freeze and first fall freeze (32°F) at 179 NOAA stations in Minnesota, 1991-2020, with the growing season between them.

Every station

A median date has an even chance of a later freeze in spring or an earlier one in fall. Each town page gives the dates at 36, 32 and 28°F and every probability from 10 to 90 percent.

StationElevationLast freezeFirst freezeSeason, daysTown page
Ada907 ftMay 11September 27139Ada
Agassiz Refuge1,142 ftMay 6October 3150Thief River Falls
Aitkin 2E1,215 ftMay 16September 28135Aitkin
Albert Lea 3SE1,230 ftApril 27October 9165Glenville
Alexandria Muni AP1,416 ftMay 2October 8159Alexandria
Amboy1,030 ftApril 30October 7160Amboy
Andover 1N899 ftMay 5October 2150Andover
Argyle847 ftMay 15September 26134Argyle
Artichoke Lake 1 E1,098 ftMay 1October 8160Appleton
Austin Waste Wtp Facility1,199 ftApril 30October 5158Austin
Babbitt1,481 ftMay 28September 14109Babbitt
Baudette1,094 ftMay 14September 26135Baudette
Baudette Intl AP1,082 ftMay 15September 26134Baudette
Benson1,030 ftMay 4October 3152Benson
Big Falls1,220 ftMay 24September 20119Littlefork
Blackduck1,340 ftMay 24September 17116Blackduck
Brainerd1,180 ftMay 8September 29144Brainerd
Brainerd Crow Wing CO AP1,221 ftMay 13September 27137Brainerd
Breckenridge 3E971 ftMay 4October 3152Breckenridge
Browns Valley978 ftMay 9September 28142Browns Valley
Brownton Wwtp1,040 ftApril 30October 4157Brownton
Bruno 7ENE1,253 ftMay 18September 26131Moose Lake
Buffalo 2NE992 ftApril 30October 9162Buffalo
Byron 4NORTH1,041 ftMay 12September 28139Byron
Caledonia1,166 ftApril 29October 10164Caledonia
Cambridge965 ftMay 2October 4155Cambridge
Camp Norris Dnr1,289 ftMay 25September 22120Warroad
Canby1,210 ftMay 2October 5156Canby
Cass Lake1,296 ftMay 17September 26132Cass Lake
Cedar907 ftMay 1October 7159Oak Grove
Celina 2E1,285 ftJune 1September 15106Cook
Chanhassen Wsfo946 ftApril 30October 9162Chanhassen
Chaska 2NW923 ftMay 5October 5153Chaska
Cloquet1,265 ftMay 26September 23120Cloquet
Collegeville St John's1,210 ftMay 3October 7157Collegeville
Cook 8NE1,355 ftMay 12October 1142Cook
Cotton1,323 ftMay 27September 20116Eveleth
Crookston Nw Exp Stn891 ftMay 11September 27139Crookston
Dassel 3SE1,065 ftApril 30October 10163Dassel
Deep Portage1,471 ftMay 5October 5153Pine River
Delano975 ftApril 30October 8161Delano
Detroit Lakes 1 Nne1,355 ftMay 15September 24132Detroit Lakes
Detroit Lakes 12E1,542 ftMay 4October 3152Frazee
Duluth1,428 ftMay 13October 1141Hermantown
Duluth Harbor Stn610 ftMay 14October 12151Duluth
Duluth NWS1,433 ftMay 18October 1136Hermantown
Elk Rvr880 ftMay 4October 5154Elk River
Ely1,382 ftMay 24September 23122Ely
Ely1,475 ftMay 14September 29138Ely
Ely 25E1,444 ftMay 21September 25127Ely
Eveleth Wwtp1,445 ftMay 12October 1142Eveleth
Fairmont1,187 ftApril 25October 14172Fairmont
Faribault970 ftMay 5October 5153Faribault
Farmington 3 Nw980 ftApril 27October 10166Farmington
Fergus Falls1,250 ftMay 4October 5154Fergus Falls
Floodwood 3 Ne1,260 ftMay 29September 18112Floodwood
Forest Lake 5NE905 ftMay 3October 5155Chisago City
Fosston 1 E1,300 ftMay 15September 26134Fosston
Gaylord1,020 ftApril 24October 15174Gaylord
Georgetown 1 E885 ftMay 9October 1145
Glenwood 2WNW1,198 ftMay 11September 27139Glenwood
Goodridge 12 Nnw1,150 ftMay 20September 17120Thief River Falls
Grand Marais612 ftMay 20October 5138Grand Marais
Grand Marais610 ftMay 22October 9140Grand Marais
Grand Meadow1,350 ftMay 6October 1148Grand Meadow
Grand Portage730 ftMay 24September 29128Grand Marais
Grand Rpds Forest Lab1,310 ftMay 17September 24130La Prairie
Granite Falls930 ftMay 4October 1150Granite Falls
Gull Lake Dam1,215 ftMay 2October 6157East Gull Lake
Gunflint Lake 10 Nw1,455 ftMay 23September 26126Grand Marais
Hallock815 ftMay 8September 30145Hallock
Hastings Dam 2680 ftApril 23October 19179Hastings
Hibbing Chisholm Hibbing AP1,352 ftJune 5September 895Hibbing
Hinckley1,035 ftMay 16September 24131Hinckley
Hutchinson 1 N1,095 ftApril 28October 8163Hutchinson
Intl Falls Intl AP1,183 ftMay 29September 13107International Falls
Isabella 14W1,740 ftMay 31September 15107Babbitt
Island Lake 4E1,410 ftMay 21September 27129Arnold
Isle 12N1,285 ftMay 10October 3146Isle
Itasca Univ Of Minn1,490 ftMay 18September 27132Naytahwaush
Jordan 1SSW900 ftMay 2October 5156Jordan
Kabetogama1,200 ftMay 28September 16111Ranier
Kimball 3N1,160 ftMay 2October 5156Kimball
La Crescent Dam 7647 ftApril 15October 28196
Lake Wilson1,653 ftMay 7September 29145Slayton
Lakefield 2NE1,530 ftMay 2October 2153Lakefield
Lamberton Sw Rsch & Outreach C1,140 ftMay 3October 2152Lamberton
Leech Lake1,302 ftMay 8October 1146Walker
Litchfield1,120 ftMay 6October 2149Litchfield
Little Falls 2NNE1,120 ftMay 4October 5154Little Falls
Littlefork 10 Sw1,200 ftMay 23September 21121Littlefork
Long Prairie1,340 ftMay 13September 27137Long Prairie
Lower St Anthony Falls754 ftApril 23October 16176Minneapolis
Lutsen 3NNE1,300 ftMay 26September 27124Grand Marais
Mabel1,112 ftMay 10September 28141Mabel
Madison Wwtp1,075 ftMay 3October 2152Madison
Mahnomen1,212 ftMay 7September 28144Mahnomen
Mankato850 ftApril 30October 9162Mankato
Marcell 5NE1,387 ftMay 14October 2141Deer River
Marshall1,149 ftMay 5October 3151Marshall
Melrose1,195 ftMay 4October 1150Melrose
Milaca1,064 ftMay 8October 1146Milaca
Milan 1NW1,020 ftMay 3October 2152Appleton
Minneapolis/st Paul AP872 ftApril 23October 18178Richfield
Minnesota City Dam 5670 ftApril 23October 16176Rollingstone
Montevideo 1SW990 ftMay 4October 1150Montevideo
Moorhead904 ftMay 5October 3151Moorhead
Moose Lake 1 Sse1,110 ftMay 12October 2143Moose Lake
Mora1,018 ftMay 9September 30144Mora
Morris W Cntrl Rsch & Outreach1,140 ftMay 4October 1150Morris
Mpls Crystal AP861 ftApril 30October 8161Brooklyn Center
Mpls Flying Cloud AP907 ftApril 23October 14174Eden Prairie
New Hope910 ftApril 29October 12166Golden Valley
New London1,250 ftMay 4October 4153New London
New Ulm 2 Se890 ftApril 29October 7161New Ulm
New Ulm 3SE925 ftMay 2October 7158New Ulm
New York Mills1,406 ftMay 10September 29142New York Mills
Northome 3S1,415 ftMay 16September 26133Blackduck
Olivia 3E1,100 ftMay 6October 1148Bird Island
Orr 3E1,315 ftJune 2September 15105Cook
Ottertail1,349 ftMay 5October 5153Ottertail
Owatonna1,140 ftMay 5October 6154Owatonna
Park Rapids Muni AP1,434 ftMay 14September 25134Park Rapids
Pine Rvr Dam1,250 ftMay 6October 7154Crosslake
Pipestone1,705 ftMay 4October 2151Pipestone
Pokegama Dam1,280 ftMay 16October 1138Cohasset
Preston930 ftMay 14September 28137Preston
Red Lake Falls1,038 ftMay 9September 30144Red Lake Falls
Red Lake Indian Agcy1,216 ftMay 12October 4145Red Lake
Red Wing Dam 3677 ftApril 23October 14174Red Wing
Redwood Falls1,020 ftApril 30October 10163Redwood Falls
Redwood Falls Muni AP1,021 ftApril 30October 4157Redwood Falls
Rice1,060 ftMay 10September 29142Rice
Rochester Intl AP1,304 ftApril 30October 6159Stewartville
Rosemount Rsch & Outreach Ctr945 ftMay 2October 5156Rosemount
Rothsay1,204 ftMay 5October 3151Pelican Rapids
Rushford770 ftMay 8October 3148Rushford
Sandstone 6 W1,130 ftMay 13September 29139Sandstone
Sandy Lake Dam Libby1,234 ftMay 7October 3149Hill City
Santiago 3 E1,010 ftMay 7September 28144Princeton
Sherburn 3WSW1,320 ftApril 28October 8163Sherburn
Springfield 1 Nw1,066 ftMay 4October 1150Springfield
St Cloud Rgnl AP1,018 ftMay 7September 30146Saint Cloud
St James Wwtp1,070 ftApril 30October 7160Saint James
St Paul900 ftApril 26October 12169Maplewood
St Paul 3SW925 ftApril 25October 12170Lilydale
St Paul Downtown AP700 ftApril 24October 16175Saint Paul
St Peter795 ftMay 2October 4155Saint Peter
Stillwater 1 Se710 ftApril 22October 19180Oak Park Heights
Stillwater 2SW898 ftApril 30October 11164Stillwater
Tamarac Wildlife Re1,508 ftMay 5October 3151White Earth
Theilman 1SSW753 ftMay 7October 2148Plainview
Thief Rvr Falls 21,128 ftMay 14September 28137Thief River Falls
Thorhult1,237 ftMay 24September 20119Ponemah
Tracy1,403 ftMay 2October 5156Tracy
Two Harbors625 ftMay 12October 6147Two Harbors
Two Harbors 7NW1,355 ftMay 27September 23119Two Harbors
U Of Mn St Paul970 ftApril 28October 8163Falcon Heights
Vadnais Lake890 ftApril 23October 20180Vadnais Heights
Wadena 3 S1,372 ftMay 10September 30143Wadena
Walker1,430 ftMay 4October 7156Walker
Warren Wsd855 ftMay 5October 2150Warren
Warroad1,073 ftMay 16September 24131Warroad
Waseca S Rsch & Outreach Ctr1,153 ftMay 2October 4155Waseca
Waskish 4NE1,191 ftMay 22September 17118Ponemah
Wells1,135 ftApril 30October 6159Wells
Wheaton1,018 ftMay 1October 9161Wheaton
White Rock Dam1,024 ftMay 3October 3153Wheaton
Wild Rvr SP840 ftMay 19September 25129Shafer
Willmar 5N1,190 ftMay 1October 6158Willmar
Willmar Wwtp1,100 ftApril 30October 7160Willmar
Windom1,384 ftApril 30October 10163Windom
Winnebago1,110 ftApril 27October 10166Winnebago
Winona652 ftApril 21October 19181Winona
Winona Dam 5 A663 ftApril 23October 21181Goodview
Wolf Ridge Elc1,400 ftMay 15October 1139Silver Bay
Worthington 2 Nne1,570 ftMay 3October 4154Worthington
Wright 3 E1,330 ftMay 31September 18110Floodwood
Zumbrota970 ftMay 9September 30144Zumbrota

Sources

NOAA NCEI U.S. Climate Normals, 1991-2020, annual and seasonal freeze probabilities. Public domain.