Frost dates in Minnesota
Across 179 NOAA stations in Minnesota, the average last spring frost ranges from April 15 at La Crescent Dam 7 to June 5 at Hibbing Chisholm Hibbing Airport.
| Ada | May 11 | September 27 | 137 |
| Agassiz Refuge | May 6 | October 3 | 148 |
| Aitkin 2E | May 16 | September 28 | 133 |
| Albert Lea 3Se | April 27 | October 9 | 164 |
| Alexandria Muni Airport | May 2 | October 8 | 159 |
| Amboy | April 30 | October 7 | 161 |
| Andover 1N | May 5 | October 2 | 148 |
| Argyle | May 15 | September 26 | 134 |
| Artichoke Lake 1 E | May 1 | October 8 | 159 |
| Austin Waste Wtp Facility | April 30 | October 5 | 158 |
| Babbitt | May 28 | September 14 | 108 |
| Baudette | May 14 | September 26 | 135 |
| Baudette Intl Airport | May 15 | September 26 | 132 |
| Benson | May 4 | October 3 | 151 |
| Big Falls | May 24 | September 20 | 117 |
| Blackduck | May 24 | September 17 | 115 |
| Brainerd | May 8 | September 29 | 141 |
| Brainerd Crow Wing Co Airport | May 13 | September 27 | 138 |
| Breckenridge 3E | May 4 | October 3 | 152 |
| Browns Valley | May 9 | September 28 | 141 |
| Brownton Wwtp | April 30 | October 4 | 156 |
| Bruno 7Ene | May 18 | September 26 | 129 |
| Buffalo 2Ne | April 30 | October 9 | 163 |
| Byron 4North | May 12 | September 28 | 139 |
| Caledonia | April 29 | October 10 | 165 |
| Cambridge | May 2 | October 4 | 153 |
| Camp Norris Dnr | May 25 | September 22 | 119 |
| Canby | May 2 | October 5 | 156 |
| Cass Lake | May 17 | September 26 | 131 |
| Cedar | May 1 | October 7 | 158 |
| Celina 2E | June 1 | September 15 | 104 |
| Chanhassen Wsfo | April 30 | October 9 | 160 |
| Chaska 2Nw | May 5 | October 5 | 151 |
| Cloquet | May 26 | September 23 | 118 |
| Collegeville St John'S | May 3 | October 7 | 155 |
| Cook 8Ne | May 12 | October 1 | 138 |
| Cotton | May 27 | September 20 | 115 |
| Crookston Nw Exp Stn | May 11 | September 27 | 138 |
| Dassel 3Se | April 30 | October 10 | 162 |
| Deep Portage | May 5 | October 5 | 150 |
| Delano | April 30 | October 8 | 159 |
| Detroit Lakes 1 Nne | May 15 | September 24 | 130 |
| Detroit Lakes 12E | May 4 | October 3 | 150 |
| Duluth | May 13 | October 1 | 140 |
| Duluth Harbor Stn | May 14 | October 12 | 149 |
| Duluth Nws | May 18 | October 1 | 135 |
| Elk Rvr | May 4 | October 5 | 154 |
| Ely | May 24 | September 23 | 121 |
| Ely | May 14 | September 29 | 135 |
| Ely 25E | May 21 | September 25 | 127 |
| Eveleth Wwtp | May 12 | October 1 | 141 |
| Fairmont | April 25 | October 14 | 171 |
| Faribault | May 5 | October 5 | 152 |
| Farmington 3 Nw | April 27 | October 10 | 166 |
| Fergus Falls | May 4 | October 5 | 152 |
| Floodwood 3 Ne | May 29 | September 18 | 111 |
| Forest Lake 5Ne | May 3 | October 5 | 154 |
| Fosston 1 E | May 15 | September 26 | 132 |
| Gaylord | April 24 | October 15 | 170 |
| Georgetown 1 E | May 9 | October 1 | 143 |
| Glenwood 2Wnw | May 11 | September 27 | 139 |
| Goodridge 12 Nnw | May 20 | September 17 | 118 |
| Grand Marais | May 22 | October 9 | 136 |
| Grand Marais | May 20 | October 5 | 137 |
| Grand Meadow | May 6 | October 1 | 146 |
| Grand Portage | May 24 | September 29 | 127 |
| Grand Rpds Forest Lab | May 17 | September 24 | 130 |
| Granite Falls | May 4 | October 1 | 150 |
| Gull Lake Dam | May 2 | October 6 | 156 |
| Gunflint Lake 10 Nw | May 23 | September 26 | 124 |
| Hallock | May 8 | September 30 | 142 |
| Hastings Dam 2 | April 23 | October 19 | 177 |
| Hibbing Chisholm Hibbing Airport | June 5 | September 8 | 93 |
| Hinckley | May 16 | September 24 | 130 |
| Hutchinson 1 N | April 28 | October 8 | 163 |
| Intl Falls Intl Airport | May 29 | September 13 | 109 |
| Isabella 14W | May 31 | September 15 | 104 |
| Island Lake 4E | May 21 | September 27 | 129 |
| Isle 12N | May 10 | October 3 | 144 |
| Itasca Univ Of Minn | May 18 | September 27 | 130 |
| Jordan 1Ssw | May 2 | October 5 | 153 |
| Kabetogama | May 28 | September 16 | 111 |
| Kimball 3N | May 2 | October 5 | 156 |
| La Crescent Dam 7 | April 15 | October 28 | 194 |
| Lake Wilson | May 7 | September 29 | 145 |
| Lakefield 2Ne | May 2 | October 2 | 153 |
| Lamberton Sw Rsch & Outreach C | May 3 | October 2 | 152 |
| Leech Lake | May 8 | October 1 | 144 |
| Litchfield | May 6 | October 2 | 147 |
| Little Falls 2Nne | May 4 | October 5 | 151 |
| Littlefork 10 Sw | May 23 | September 21 | 118 |
| Long Prairie | May 13 | September 27 | 134 |
| Lower St Anthony Falls | April 23 | October 16 | 175 |
| Lutsen 3Nne | May 26 | September 27 | 126 |
| Mabel | May 10 | September 28 | 140 |
| Madison Wwtp | May 3 | October 2 | 151 |
| Mahnomen | May 7 | September 28 | 143 |
| Mankato | April 30 | October 9 | 161 |
| Marcell 5Ne | May 14 | October 2 | 140 |
| Marshall | May 5 | October 3 | 150 |
| Melrose | May 4 | October 1 | 148 |
| Milaca | May 8 | October 1 | 143 |
| Milan 1Nw | May 3 | October 2 | 151 |
| Minneapolis/St Paul Airport | April 23 | October 18 | 176 |
| Minnesota City Dam 5 | April 23 | October 16 | 175 |
| Montevideo 1Sw | May 4 | October 1 | 149 |
| Moorhead | May 5 | October 3 | 150 |
| Moose Lake 1 Sse | May 12 | October 2 | 144 |
| Mora | May 9 | September 30 | 142 |
| Morris W Cntrl Rsch & Outreach | May 4 | October 1 | 150 |
| Mpls Crystal Airport | April 30 | October 8 | 159 |
| Mpls Flying Cloud Airport | April 23 | October 14 | 172 |
| New Hope | April 29 | October 12 | 163 |
| New London | May 4 | October 4 | 152 |
| New Ulm 2 Se | April 29 | October 7 | 161 |
| New Ulm 3Se | May 2 | October 7 | 157 |
| New York Mills | May 10 | September 29 | 141 |
| Northome 3S | May 16 | September 26 | 131 |
| Olivia 3E | May 6 | October 1 | 146 |
| Orr 3E | June 2 | September 15 | 102 |
| Ottertail | May 5 | October 5 | 153 |
| Owatonna | May 5 | October 6 | 154 |
| Park Rapids Muni Airport | May 14 | September 25 | 133 |
| Pine Rvr Dam | May 6 | October 7 | 152 |
| Pipestone | May 4 | October 2 | 152 |
| Pokegama Dam | May 16 | October 1 | 138 |
| Preston | May 14 | September 28 | 136 |
| Red Lake Falls | May 9 | September 30 | 142 |
| Red Lake Indian Agcy | May 12 | October 4 | 142 |
| Red Wing Dam 3 | April 23 | October 14 | 173 |
| Redwood Falls | April 30 | October 10 | 162 |
| Redwood Falls Muni Airport | April 30 | October 4 | 157 |
| Rice | May 10 | September 29 | 140 |
| Rochester Intl Airport | April 30 | October 6 | 159 |
| Rosemount Rsch & Outreach Ctr | May 2 | October 5 | 155 |
| Rothsay | May 5 | October 3 | 149 |
| Rushford | May 8 | October 3 | 147 |
| Sandstone 6 W | May 13 | September 29 | 137 |
| Sandy Lake Dam Libby | May 7 | October 3 | 148 |
| Santiago 3 E | May 7 | September 28 | 144 |
| Sherburn 3Wsw | April 28 | October 8 | 162 |
| Springfield 1 Nw | May 4 | October 1 | 150 |
| St Cloud Rgnl Airport | May 7 | September 30 | 144 |
| St James Wwtp | April 30 | October 7 | 160 |
| St Paul | April 26 | October 12 | 166 |
| St Paul 3Sw | April 25 | October 12 | 169 |
| St Paul Downtown Airport | April 24 | October 16 | 174 |
| St Peter | May 2 | October 4 | 153 |
| Stillwater 1 Se | April 22 | October 19 | 178 |
| Stillwater 2Sw | April 30 | October 11 | 163 |
| Tamarac Wildlife Re | May 5 | October 3 | 150 |
| Theilman 1Ssw | May 7 | October 2 | 148 |
| Thief Rvr Falls 2 | May 14 | September 28 | 135 |
| Thorhult | May 24 | September 20 | 120 |
| Tracy | May 2 | October 5 | 156 |
| Two Harbors | May 12 | October 6 | 145 |
| Two Harbors 7Nw | May 27 | September 23 | 117 |
| U Of Mn St Paul | April 28 | October 8 | 162 |
| Vadnais Lake | April 23 | October 20 | 177 |
| Wadena 3 S | May 10 | September 30 | 141 |
| Walker | May 4 | October 7 | 155 |
| Warren Wsd | May 5 | October 2 | 147 |
| Warroad | May 16 | September 24 | 129 |
| Waseca S Rsch & Outreach Ctr | May 2 | October 4 | 155 |
| Waskish 4Ne | May 22 | September 17 | 117 |
| Wells | April 30 | October 6 | 158 |
| Wheaton | May 1 | October 9 | 160 |
| White Rock Dam | May 3 | October 3 | 154 |
| Wild Rvr Sp | May 19 | September 25 | 128 |
| Willmar 5N | May 1 | October 6 | 156 |
| Willmar Wwtp | April 30 | October 7 | 159 |
| Windom | April 30 | October 10 | 162 |
| Winnebago | April 27 | October 10 | 166 |
| Winona | April 21 | October 19 | 180 |
| Winona Dam 5 A | April 23 | October 21 | 180 |
| Wolf Ridge Elc | May 15 | October 1 | 137 |
| Worthington 2 Nne | May 3 | October 4 | 153 |
| Wright 3 E | May 31 | September 18 | 107 |
| Zumbrota | May 9 | September 30 | 144 |
Sources
- U.S. Annual/Seasonal Climate Normals, 1991 to 2020 (freeze probability dates by station), NOAA National Centers for Environmental Information, checked 1 November 2026
- Annual/Seasonal Normals 1991 to 2020 documentation, NOAA National Centers for Environmental Information, checked 1 November 2026
- 2024 Gazetteer Files, ZIP Code Tabulation Areas, US Census Bureau, checked 1 November 2026