Average First Frost Dates for North Dakota

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First Frost Dates were calculated using daily climate data from the period between 1991-2020.

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List of Average First Frost Dates for Locations in North Dakota

LocationAverage First Frost Dates
BismarckSep. 21 - Sep. 30
Devils LakeSep. 21 - Sep. 30
DickinsonSep.11 - Sep. 20
FargoOct. 1 - Oct. 10
Grand ForksSep. 21 - Sep. 30
JamestownOct. 1 - Oct. 10
MandanSep. 21 - Sep. 30
MinotSep. 21 - Sep. 30
Valley CitySep. 21 - Sep. 30
WahpetonOct. 1 - Oct. 10
Watford CitySep.11 - Sep. 20
West FargoOct. 1 - Oct. 10
WillistonSep. 21 - Sep. 30
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