Richardton weather by month
What a typical year looks like in Richardton, North Dakota: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Richardton Abbey, 1 km from Richardton; records cover 1916–2026.
The year at a glance
- Precipitation a year
- 16.3 in415 mm
- Snow a year
- 33 in84 cm
- Last spring freeze
- May 11
- First fall freeze
- Sep 28
- Heating degree days
- 8,360
- Cooling degree days
- 507
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −17°−27° (heating, 99%) and 96°36° (cooling, 1%).
Month by month
Richardton in January
Highs average 24°−4° and lows 7°−14°, with 0.37 in9.4 mm of precipitation and 5 in11 cm of snow in a typical January.
- Record high
- 61°16° (1981)
- Record low
- −43°−42° (1917)
- Heating degree days
- 1533
- Cooling degree days
- 0
Richardton in February
Highs average 27°−3° and lows 10°−12°, with 0.38 in9.7 mm of precipitation and 4 in11 cm of snow in a typical February.
- Record high
- 66°19° (1932)
- Record low
- −48°−44° (1917)
- Heating degree days
- 1292
- Cooling degree days
- 0
Richardton in March
Highs average 40°4° and lows 20°−6°, with 0.67 in17 mm of precipitation and 7 in19 cm of snow in a typical March.
- Record high
- 93°34° (1918)
- Record low
- −27°−33° (1916)
- Heating degree days
- 1080
- Cooling degree days
- 0
Richardton in April
Highs average 54°12° and lows 31°0°, with 1.3 in33 mm of precipitation and 3 in8 cm of snow in a typical April.
- Record high
- 93°34° (1980)
- Record low
- −8°−22° (1975)
- Heating degree days
- 676
- Cooling degree days
- 1
Richardton in May
Highs average 66°19° and lows 43°6°, with 2.4 in62 mm of precipitation and 0.8 in2 cm of snow in a typical May.
- Record high
- 103°39° (1934)
- Record low
- 8°−13° (1967)
- Heating degree days
- 336
- Cooling degree days
- 14
Richardton in June
Highs average 75°24° and lows 53°12°, with 3.1 in79 mm of precipitation in a typical June.
- Record high
- 106°41° (1936)
- Record low
- 30°−1° (1919)
- Heating degree days
- 97
- Cooling degree days
- 71
Richardton in July
Highs average 83°28° and lows 58°15°, with 2.2 in55 mm of precipitation in a typical July.
- Record high
- 113°45° (1936)
- Record low
- 34°1° (1934)
- Heating degree days
- 24
- Cooling degree days
- 197
Richardton in August
Highs average 82°28° and lows 57°14°, with 1.7 in44 mm of precipitation in a typical August.
- Record high
- 106°41° (1949)
- Record low
- 33°1° (1928)
- Heating degree days
- 35
- Cooling degree days
- 178
Richardton in September
Highs average 72°22° and lows 48°9°, with 1.7 in44 mm of precipitation and 0.2 in0.5 cm of snow in a typical September.
- Record high
- 104°40° (1929)
- Record low
- 16°−9° (1926)
- Heating degree days
- 203
- Cooling degree days
- 44
Richardton in OctoberThis month
Highs average 55°13° and lows 34°1°, with 1.5 in37 mm of precipitation and 2.6 in6.6 cm of snow in a typical October.
- Record high
- 95°35° (1953)
- Record low
- −9°−23° (1919)
- Heating degree days
- 632
- Cooling degree days
- 2
Richardton in November
Highs average 39°4° and lows 22°−6°, with 0.5 in13 mm of precipitation and 5 in12 cm of snow in a typical November.
- Record high
- 78°26° (1931)
- Record low
- −28°−33° (1919)
- Heating degree days
- 1040
- Cooling degree days
- 0
Richardton in December
Highs average 28°−2° and lows 11°−12°, with 0.46 in12 mm of precipitation and 5 in14 cm of snow in a typical December.
- Record high
- 64°18° (1939)
- Record low
- −36°−38° (2017)
- Heating degree days
- 1412
- Cooling degree days
- 0