North Dakota Frost Dates
The median last spring freeze and first fall freeze (32°F) at 125 NOAA stations in North Dakota, 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.
| Station | Elevation | Last freeze | First freeze | Season, days | Town page |
|---|---|---|---|---|---|
| Almont | 1,915 ft | May 17 | September 21 | 127 | New Salem |
| Amidon | 2,910 ft | May 12 | September 29 | 140 | Amidon |
| Ashley | 2,014 ft | May 13 | September 28 | 138 | Ashley |
| Beach | 2,800 ft | May 16 | September 26 | 133 | Beach |
| Belcourt Keya Radio | 1,960 ft | May 19 | September 24 | 128 | Belcourt |
| Beulah 1 W | 1,785 ft | May 21 | September 20 | 122 | Beulah |
| Bismarck | 1,658 ft | May 14 | September 27 | 136 | Bismarck |
| Bismarck 2.4 Nnw | 1,831 ft | May 10 | September 30 | 143 | Bismarck |
| Bismarck WFO | 1,651 ft | May 14 | September 30 | 139 | Bismarck |
| Bottineau | 1,619 ft | May 15 | September 25 | 133 | Bottineau |
| Bowman | 2,983 ft | May 16 | September 25 | 132 | Bowman |
| Breien | 1,720 ft | May 12 | September 24 | 135 | Cannon Ball |
| Butte 5SE | 1,720 ft | May 16 | September 28 | 135 | McClusky |
| Carrington | 1,586 ft | May 10 | September 28 | 141 | Carrington |
| Carrington 4 N | 1,560 ft | May 12 | September 27 | 138 | Carrington |
| Carson | 2,335 ft | May 19 | September 25 | 129 | Carson |
| Casselton Agronomy Farm | 935 ft | May 9 | October 1 | 145 | Casselton |
| Cavalier 7NW | 899 ft | May 12 | September 30 | 141 | Cavalier |
| Center 4SE | 1,990 ft | May 11 | September 29 | 141 | Center |
| Colgate | 1,180 ft | May 10 | September 24 | 137 | Finley |
| Cooperstown | 1,380 ft | May 17 | September 23 | 129 | Cooperstown |
| Crosby | 1,959 ft | May 17 | September 23 | 129 | Crosby |
| Devils Lake | 1,440 ft | May 12 | September 30 | 141 | Devils Lake |
| Devils Lake Kdlr | 1,464 ft | May 6 | October 5 | 152 | Devils Lake |
| Dickinson | 2,460 ft | May 20 | September 22 | 125 | Dickinson |
| Dickinson Rch Hq | 2,380 ft | May 18 | September 24 | 129 | Manning |
| Drake 9 Ne | 1,547 ft | May 12 | September 27 | 138 | Towner |
| Dunn Ctr 1E | 2,187 ft | May 20 | September 21 | 124 | Killdeer |
| Edgeley 3WNW | 1,623 ft | May 7 | October 2 | 148 | Edgeley |
| Edmore 4NW | 1,539 ft | May 15 | September 22 | 130 | Langdon |
| Edmunds Arrowwood Ref | 1,460 ft | May 11 | September 28 | 140 | Carrington |
| Ellendale | 1,455 ft | May 4 | October 2 | 151 | Ellendale |
| Enderlin 2W | 1,164 ft | May 3 | October 5 | 155 | Enderlin |
| Esmond 9 Nnw | 1,632 ft | May 11 | September 28 | 140 | Rugby |
| Fairfield | 2,750 ft | May 12 | September 28 | 139 | Belfield |
| Fargo 3S | 908 ft | May 4 | October 2 | 151 | Fargo |
| Fargo Hector Intl AP | 900 ft | May 10 | September 30 | 143 | |
| Fessenden | 1,620 ft | May 13 | September 28 | 138 | Fessenden |
| Flasher | 1,980 ft | May 13 | September 27 | 137 | Carson |
| Forman 5 Sse | 1,250 ft | May 7 | October 1 | 147 | Forman |
| Fortuna 1 W | 2,350 ft | May 19 | September 17 | 121 | Crosby |
| Foxholm 7 N | 1,675 ft | May 11 | September 29 | 141 | Minot Air Force Base |
| Fullerton 1 Ese | 1,435 ft | May 9 | September 28 | 142 | Ellendale |
| Gackle | 1,951 ft | May 6 | October 4 | 151 | Edgeley |
| Garrison | 1,932 ft | May 12 | September 30 | 141 | Garrison |
| Garrison | 1,910 ft | May 14 | September 26 | 135 | Garrison |
| Grafton | 827 ft | May 4 | October 7 | 156 | Grafton |
| Grand Forks Intl AP | 842 ft | May 16 | September 27 | 134 | Grand Forks |
| Grand Forks Univ (nws) | 830 ft | May 10 | October 1 | 144 | Grand Forks |
| Granville | 1,510 ft | May 9 | October 1 | 145 | Surrey |
| Grassy Butte 2ENE | 2,670 ft | May 18 | September 23 | 128 | Killdeer |
| Hansboro 4 Nne | 1,540 ft | May 18 | September 23 | 128 | Rolla |
| Harvey 4NE | 1,611 ft | May 12 | September 26 | 137 | Harvey |
| Hazelton 4NW | 1,982 ft | May 12 | September 27 | 138 | Cannon Ball |
| Heart Butte Dam | 2,134 ft | May 14 | September 29 | 138 | Elgin |
| Hebron | 2,160 ft | May 19 | September 21 | 125 | Hebron |
| Hettinger Exp Stn | 2,703 ft | May 21 | September 21 | 123 | Hettinger |
| Hettinger Muni AP | 2,705 ft | May 24 | September 18 | 117 | Hettinger |
| Hillsboro 3 N | 910 ft | May 2 | October 9 | 160 | Hillsboro |
| Jamestown 38 Wsw | 1,920 ft | May 14 | September 27 | 136 | Steele |
| Jamestown Muni AP | 1,494 ft | May 11 | September 28 | 140 | Jamestown |
| Jamestown State Hosp | 1,467 ft | May 8 | September 29 | 144 | Jamestown |
| Keene 3S | 2,470 ft | May 20 | September 20 | 123 | Mandaree |
| Kenmare 1 Wsw | 1,810 ft | May 15 | September 23 | 131 | Kenmare |
| Killdeer | 2,310 ft | May 21 | September 23 | 125 | Killdeer |
| La Moure | 1,334 ft | May 10 | September 28 | 141 | LaMoure |
| Lake Metigoshe SP | 2,142 ft | May 17 | September 24 | 130 | Bottineau |
| Langdon Exp Farm | 1,615 ft | May 17 | September 26 | 132 | Langdon |
| Larimore 4SW | 1,152 ft | May 11 | September 28 | 140 | Larimore |
| Leeds | 1,530 ft | May 15 | September 27 | 135 | Cando |
| Lidgerwood | 1,125 ft | May 2 | October 6 | 157 | Lidgerwood |
| Linton | 1,690 ft | May 12 | September 29 | 140 | Linton |
| Lisbon | 1,149 ft | May 12 | September 27 | 138 | Lisbon |
| Mandan Exp Stn | 1,750 ft | May 13 | September 27 | 137 | Mandan |
| Max | 2,110 ft | May 10 | September 28 | 141 | Garrison |
| Mayville | 983 ft | May 13 | September 27 | 137 | Portland |
| Mc Clusky | 1,927 ft | May 8 | October 1 | 146 | McClusky |
| Mc Henry 3W | 1,555 ft | May 12 | September 28 | 139 | New Rockford |
| Mc Leod 3 E | 1,075 ft | May 6 | September 29 | 146 | Milnor |
| Medora | 2,268 ft | May 19 | September 20 | 124 | Medora |
| Medora 7 E | 2,771 ft | May 9 | September 30 | 144 | Medora |
| Minnewaukan | 1,470 ft | May 12 | September 29 | 140 | Minnewaukan |
| Minot Exp Stn | 1,769 ft | May 13 | September 27 | 137 | Minot |
| Minot Intl AP | 1,665 ft | May 10 | October 1 | 144 | Minot |
| Moffit 3 Se | 1,800 ft | May 11 | September 29 | 141 | Steele |
| Mohall | 1,641 ft | May 17 | September 23 | 129 | Mohall |
| Mott | 2,426 ft | May 16 | September 25 | 132 | Mott |
| Napoleon | 1,980 ft | May 13 | September 28 | 138 | Napoleon |
| New England | 2,600 ft | May 16 | September 24 | 131 | New England |
| New Salem 5NW | 2,150 ft | May 18 | September 24 | 129 | New Salem |
| Northgate 5 Ese | 1,842 ft | May 20 | September 19 | 122 | Bowbells |
| Oakes | 1,324 ft | May 8 | September 28 | 143 | Oakes |
| Pembina | 790 ft | May 16 | September 29 | 136 | Pembina |
| Petersburg 2 N | 1,532 ft | May 11 | September 28 | 140 | Lakota |
| Powers Lake 1N | 2,205 ft | May 18 | September 17 | 122 | Tioga |
| Pretty Rock | 2,480 ft | May 20 | September 23 | 126 | Elgin |
| Richardton Abbey | 2,470 ft | May 9 | October 1 | 145 | Richardton |
| Riverdale | 1,962 ft | May 12 | October 3 | 144 | Garrison |
| Rolette 3SE | 1,620 ft | May 22 | September 20 | 121 | Rolette |
| Rolla 1NE | 1,833 ft | May 20 | September 26 | 129 | Rolla |
| Rugby | 1,550 ft | May 17 | September 23 | 129 | Rugby |
| Stanley 3 Nnw | 2,280 ft | May 17 | September 23 | 129 | Stanley |
| Steele 4N | 1,853 ft | May 15 | September 25 | 133 | Steele |
| Streeter 5 Nw | 1,961 ft | May 13 | September 30 | 140 | Napoleon |
| Taylor 7 Nnw | 2,220 ft | May 23 | September 20 | 120 | Richardton |
| Theodore Roosevelt AP | 2,580 ft | May 18 | September 25 | 130 | Dickinson |
| Tioga 1E | 2,245 ft | May 11 | September 26 | 138 | Tioga |
| Towner 2 Ne | 1,480 ft | May 17 | September 22 | 128 | Towner |
| Trotters 3 Sse | 2,420 ft | May 15 | September 25 | 133 | |
| Turtle Lake | 1,893 ft | May 14 | September 26 | 135 | Turtle Lake |
| Tuttle 12NNE | 2,100 ft | May 13 | September 29 | 139 | Fessenden |
| Underwood | 2,045 ft | May 10 | September 29 | 142 | Underwood |
| Upham 3 N | 1,425 ft | May 15 | September 25 | 133 | Bottineau |
| Valley City 3 Nnw | 1,210 ft | May 13 | September 26 | 136 | Valley City |
| Velva | 1,510 ft | May 22 | September 22 | 123 | Velva |
| Washburn | 1,755 ft | May 12 | September 30 | 141 | Washburn |
| Watford City | 2,170 ft | May 9 | September 27 | 141 | Watford City |
| Watford City 14S | 2,027 ft | May 22 | September 17 | 118 | Watford City |
| Westhope | 1,502 ft | May 14 | September 25 | 134 | Mohall |
| Wildrose 3NW | 2,227 ft | May 18 | September 20 | 125 | Crosby |
| Williston Exp Farm | 2,105 ft | May 13 | September 26 | 136 | Williston |
| Williston Sloulin Intl AP | 1,902 ft | May 21 | September 21 | 123 | Williston |
| Willow City | 1,473 ft | May 21 | September 20 | 122 | Bottineau |
| Wilton | 2,188 ft | May 11 | September 30 | 142 | Wilton |
| Wishek | 2,037 ft | May 13 | September 27 | 137 | Wishek |
Sources
NOAA NCEI U.S. Climate Normals, 1991-2020, annual and seasonal freeze probabilities. Public domain.