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Average Date of Last Spring Frost and First Fall Frost in North Dakota

Station & County Average Date of Last Spring Frost Average Date of First Fall Frost
  28 F 32 F 32 F 28 F
Northwest District
Crosby - Divide May 10 May 18 September 16 September 23
Minot Exp - Ward May 12 May 20 September 17 September 26
Mohall - Renville May 11 May 18 September 16 September 23
Parshall - Mountrail May 15 May 21 September 12 September 18
Powers Lake - Burke May 15 May 23 September 11 September 23
Williston - Williams May 4 May 13 September 22 September 28
North Central District
Bottineau - Bottineau May 15 May 21 September 15 September 23
Granville - McHenry May 13 May 19 September 15 September 25
Maddock - Benson May 15 May 23 September 13 September 21
Towner - McHenry May 14 May 21 September 12 September 21
Northeast District
Grafton - Walsh May 9 May 18 September 19 September 25
Grand Forks - Grand Forks May 6 May 16 September 23 September 29
Hansboro - Towner May 17 May 27 September 11 September 18
Langdon Exp - Cavalier May 17 May 28 September 13 September 21
Pembina - Pembina May 12 May 21 September 17 September 25
West Central District
Dun Center - Dunn May 12 May 17 September 18 September 27
Garrison - McLean May 8 May 18 September 19 September 25
Washburn - McLean May 6 May 13 September 24 October 1
Watford City -McKenzie May 7 May 13 September 19 September 27
Central District
Fessenden - Wells May 8 May 17 September 18 September 26
Jamestown - Stutsman May 5 May 15 September 20 September 29
McClusky - Sheridan May 11 May 20 September 18 September 26
Pettibone - Kidder May 13 May 22 September 12 September 17
East Central District
Amenia - Cass May 6 May 15 September 23 September 28
Cooperstown - Griggs May 11 May 21 September 19 September 26
Fargo - Cass May 4 May 12 September 26 October 2
Mayville - Traill May 8 May 17 September 24 October 2
Southwest District
Beach - Golden Valley May 12 May 20 September 18 September 27
Bowman - Bowman May 4 May 14 September 21 September 30
Dickinson Exp - Stark May 12 May 19 September 14 September 22
Hettinger - Adams May 11 May 18 September 20 September 27
Marmarth - Slope May 11 May 16 September 15 September 23
South Central District
Carson #2 - LaMoure May 11 May 19 September 15 September 24
Mandan Exp. -Morton May 7 May 12 September 23 September 28
Southeast District
Edgeley Exp. - LaMoure May 11 May 18 September 19 September 28
Lisbon - Ransom May 10 May 19 September 20 September 27
McLeod - Ransom May 9 May 15 September 22 September 29
Napoleon - Logan May 14 May 21 September 16 September 23
Oakes - Dickey May 5 May 13 September 23 October 1
Wahpeton - Richland May 4 May 13 September 25 October 3

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