Minnesota frost dates: L
| City | Last frost | First frost | Season | Zone |
|---|---|---|---|---|
| La Crescent | Apr 15 | Oct 28 | 196 d | 5a |
| La Salle | Apr 30 | Oct 7 | 160 d | 5a |
| Lafayette | Apr 29 | Oct 7 | 161 d | 4b |
| Lake Benton | May 4 | Oct 2 | 151 d | 4b |
| Lake Bronson | May 8 | Sep 30 | 145 d | 3b |
| Lake City | May 7 | Oct 2 | 148 d | 4b |
| Lake Crystal | Apr 30 | Oct 9 | 162 d | 5a |
| Lake Elmo | Apr 30 | Oct 11 | 164 d | 5a |
| Lake George | May 18 | Sep 27 | 132 d | 3b |
| Lake Hubert | May 2 | Oct 6 | 157 d | 4a |
| Lake Lillian | Apr 30 | Oct 7 | 160 d | 4b |
| Lake Park | May 15 | Sep 24 | 132 d | 4a |
| Lake Wilson | May 7 | Sep 29 | 145 d | 5a |
| Lakefield | May 2 | Oct 2 | 153 d | 5a |
| Lakeland | Apr 22 | Oct 19 | 180 d | 5a |
| Lakeville | Apr 27 | Oct 10 | 166 d | 4b |
| Lamberton | May 3 | Oct 2 | 152 d | 5a |
| Lancaster | May 8 | Sep 30 | 145 d | 3b |
| Lanesboro | May 14 | Sep 28 | 137 d | 4b |
| Lansing | Apr 30 | Oct 5 | 158 d | 4b |
| Laporte | May 17 | Sep 26 | 132 d | 3b |
| Lastrup | May 4 | Oct 5 | 154 d | 4a |
| Le Center | May 2 | Oct 4 | 155 d | 4b |
| Le Roy | May 6 | Oct 1 | 148 d | 4b |
| Le Sueur | May 2 | Oct 4 | 155 d | 4b |
| Lengby | May 15 | Sep 26 | 134 d | 3b |
| Leonard | May 12 | Oct 4 | 145 d | 3b |
| Leota | May 7 | Sep 29 | 145 d | 4b |
| Lester Prairie | Apr 28 | Oct 8 | 163 d | 4b |
| Lewiston | Apr 21 | Oct 19 | 181 d | 4b |
| Lewisville | Apr 30 | Oct 7 | 160 d | 5a |
| Lindstrom | May 3 | Oct 5 | 155 d | 4b |
| Lismore | May 7 | Sep 29 | 145 d | 5a |
| Litchfield | May 6 | Oct 2 | 149 d | 4b |
| Little Falls | May 4 | Oct 5 | 154 d | 4a |
| Littlefork | May 23 | Sep 21 | 121 d | 3b |
| Loman | May 23 | Sep 21 | 121 d | 3a |
| Long Lake | Apr 30 | Oct 9 | 162 d | 4b |
| Long Prairie | May 13 | Sep 27 | 137 d | 4a |
| Longville | May 5 | Oct 5 | 153 d | 4a |
| Lonsdale | May 5 | Oct 5 | 153 d | 4b |
| Loretto | Apr 29 | Oct 12 | 166 d | 4b |
| Lowry | May 11 | Sep 27 | 139 d | 4b |
| Lucan | May 3 | Oct 2 | 152 d | 5a |
| Lutsen | May 26 | Sep 27 | 124 d | 3b |
| Luverne | May 1 | Oct 4 | 156 d | 5a |
| Lyle | Apr 30 | Oct 5 | 158 d | 5a |
| Lynd | May 5 | Oct 3 | 151 d | 5a |