Grand Forks AFB weather by month
What a typical year looks like in Grand Forks AFB, North Dakota: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at GRAND FORKS UNIV (NWS), 22 km from Grand Forks AFB; records cover 1893–2026.
The year at a glance
- Precipitation a year
- 22.8 in580 mm
- Snow a year
- 49 in124 cm
- Last spring freeze
- May 12
- First fall freeze
- Oct 1
- Heating degree days
- 9,315
- Cooling degree days
- 431
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −21°−29° (heating, 99%) and 91°33° (cooling, 1%).
Month by month
Grand Forks AFB in January
Highs average 15°−9° and lows −1°−18°, with 0.49 in12 mm of precipitation and 10 in24 cm of snow in a typical January.
- Record high
- 54°12° (1990)
- Record low
- −43°−42° (1912)
- Heating degree days
- 1798
- Cooling degree days
- 0
Grand Forks AFB in February
Highs average 20°−6° and lows 3°−16°, with 0.56 in14 mm of precipitation and 8 in21 cm of snow in a typical February.
- Record high
- 67°19° (2000)
- Record low
- −42°−41° (1936)
- Heating degree days
- 1499
- Cooling degree days
- 0
Grand Forks AFB in March
Highs average 34°1° and lows 17°−8°, with 0.91 in23 mm of precipitation and 8 in20 cm of snow in a typical March.
- Record high
- 83°28° (1910)
- Record low
- −36°−38° (1948)
- Heating degree days
- 1229
- Cooling degree days
- 0
Grand Forks AFB in April
Highs average 52°11° and lows 31°−1°, with 1.2 in30 mm of precipitation and 3 in8 cm of snow in a typical April.
- Record high
- 98°37° (1980)
- Record low
- −9°−23° (1920)
- Heating degree days
- 706
- Cooling degree days
- 1
Grand Forks AFB in May
Highs average 67°19° and lows 44°6°, with 3 in76 mm of precipitation and 0.1 in0.3 cm of snow in a typical May.
- Record high
- 105°41° (1934)
- Record low
- 5°−15° (1967)
- Heating degree days
- 330
- Cooling degree days
- 20
Grand Forks AFB in June
Highs average 76°24° and lows 55°13°, with 4.1 in105 mm of precipitation in a typical June.
- Record high
- 105°41° (1933)
- Record low
- 28°−2° (1910)
- Heating degree days
- 78
- Cooling degree days
- 88
Grand Forks AFB in July
Highs average 80°27° and lows 59°15°, with 3.6 in90 mm of precipitation in a typical July.
- Record high
- 109°43° (1936)
- Record low
- 36°2° (1908)
- Heating degree days
- 24
- Cooling degree days
- 161
Grand Forks AFB in August
Highs average 79°26° and lows 57°14°, with 3 in77 mm of precipitation in a typical August.
- Record high
- 104°40° (1983)
- Record low
- 30°−1° (1931)
- Heating degree days
- 39
- Cooling degree days
- 127
Grand Forks AFB in September
Highs average 70°21° and lows 47°9°, with 2.4 in61 mm of precipitation in a typical September.
- Record high
- 102°39° (1978)
- Record low
- 11°−12° (1893)
- Heating degree days
- 225
- Cooling degree days
- 32
Grand Forks AFB in OctoberThis month
Highs average 53°12° and lows 35°1°, with 2 in51 mm of precipitation and 1.5 in3.8 cm of snow in a typical October.
- Record high
- 95°35° (1922)
- Record low
- −9°−23° (1919)
- Heating degree days
- 656
- Cooling degree days
- 2
Grand Forks AFB in November
Highs average 35°2° and lows 20°−7°, with 0.83 in21 mm of precipitation and 5 in13 cm of snow in a typical November.
- Record high
- 73°23° (1975)
- Record low
- −35°−37° (1905)
- Heating degree days
- 1131
- Cooling degree days
- 0
Grand Forks AFB in December
Highs average 21°−6° and lows 6°−15°, with 0.73 in19 mm of precipitation and 14 in34 cm of snow in a typical December.
- Record high
- 58°14° (1900)
- Record low
- −37°−38° (1933)
- Heating degree days
- 1600
- Cooling degree days
- 0