Harvey weather by month
What a typical year looks like in Harvey, North Dakota: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Harvey 4ne, 5 km from Harvey; records cover 1979–2026.
The year at a glance
- Precipitation a year
- 19.3 in489 mm
- Snow a year
- Rare
- Last spring freeze
- May 11
- First fall freeze
- Sep 23
- Heating degree days
- 9,517
- Cooling degree days
- 361
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −23°−31° (heating, 99%) and 93°34° (cooling, 1%).
Month by month
Harvey in January
Highs average 17°−8° and lows −2°−19°, with 0.41 in10 mm of precipitation in a typical January.
- Record high
- 58°14° (2012)
- Record low
- −40° (2009)
- Heating degree days
- 1781
- Cooling degree days
- 0
Harvey in February
Highs average 22°−6° and lows 2°−17°, with 0.41 in10 mm of precipitation in a typical February.
- Record high
- 61°16° (1988)
- Record low
- −41° (1996)
- Heating degree days
- 1491
- Cooling degree days
- 0
Harvey in March
Highs average 35°1° and lows 15°−9°, with 0.73 in19 mm of precipitation in a typical March.
- Record high
- 74°23° (2007)
- Record low
- −29°−34° (2003)
- Heating degree days
- 1245
- Cooling degree days
- 0
Harvey in April
Highs average 52°11° and lows 29°−2°, with 1.1 in27 mm of precipitation in a typical April.
- Record high
- 91°33° (1987)
- Record low
- −7°−22° (2002)
- Heating degree days
- 738
- Cooling degree days
- 0
Harvey in May
Highs average 66°19° and lows 42°6°, with 2.7 in68 mm of precipitation in a typical May.
- Record high
- 97°36° (1980)
- Record low
- 16°−9° (2005)
- Heating degree days
- 350
- Cooling degree days
- 13
Harvey in June
Highs average 75°24° and lows 53°12°, with 3.6 in92 mm of precipitation in a typical June.
- Record high
- 103°39° (1988)
- Record low
- 34°1° (1992)
- Heating degree days
- 96
- Cooling degree days
- 65
Harvey in July
Highs average 81°27° and lows 57°14°, with 3.1 in80 mm of precipitation in a typical July.
- Record high
- 107°42° (1988)
- Record low
- 40°4° (1993)
- Heating degree days
- 28
- Cooling degree days
- 143
Harvey in August
Highs average 80°26° and lows 54°12°, with 2.3 in59 mm of precipitation in a typical August.
- Record high
- 105°41° (1983)
- Record low
- 32°0° (1982)
- Heating degree days
- 61
- Cooling degree days
- 112
Harvey in September
Highs average 71°21° and lows 45°7°, with 1.8 in47 mm of precipitation in a typical September.
- Record high
- 103°39° (2015)
- Record low
- 23°−5° (1989)
- Heating degree days
- 252
- Cooling degree days
- 27
Harvey in OctoberThis month
Highs average 54°12° and lows 31°−1°, with 1.4 in36 mm of precipitation in a typical October.
- Record high
- 90°32° (1992)
- Record low
- −1°−18° (1991)
- Heating degree days
- 700
- Cooling degree days
- 1
Harvey in November
Highs average 36°2° and lows 16°−9°, with 0.69 in18 mm of precipitation in a typical November.
- Record high
- 78°26° (1999)
- Record low
- −22°−30° (1985)
- Heating degree days
- 1168
- Cooling degree days
- 0
Harvey in December
Highs average 22°−6° and lows 4°−15°, with 0.9 in23 mm of precipitation in a typical December.
- Record high
- 60°16° (2015)
- Record low
- −33°−36° (1989)
- Heating degree days
- 1607
- Cooling degree days
- 0