Marvin weather by month
What a typical year looks like in Marvin, South Dakota: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Summit 1 W, 13 km from Marvin; records cover 1956–2026.
The year at a glance
- Precipitation a year
- 25.7 in653 mm
- Snow a year
- 59 in149 cm
- Last spring freeze
- May 15
- First fall freeze
- Sep 24
- Heating degree days
- 8,603
- Cooling degree days
- 481
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −20°−29° (heating, 99%) and 91°33° (cooling, 1%).
Month by month
Marvin in January
Highs average 21°−6° and lows 2°−17°, with 0.65 in17 mm of precipitation and 10 in26 cm of snow in a typical January.
- Record high
- 64°18° (1981)
- Record low
- −38°−39° (2019)
- Heating degree days
- 1661
- Cooling degree days
- 0
Marvin in February
Highs average 26°−4° and lows 6°−14°, with 0.69 in18 mm of precipitation and 12 in31 cm of snow in a typical February.
- Record high
- 62°17° (2000)
- Record low
- −40° (1994)
- Heating degree days
- 1375
- Cooling degree days
- 0
Marvin in March
Highs average 39°4° and lows 18°−8°, with 1 in26 mm of precipitation and 9 in22 cm of snow in a typical March.
- Record high
- 81°27° (2012)
- Record low
- −26°−32° (1962)
- Heating degree days
- 1130
- Cooling degree days
- 0
Marvin in April
Highs average 55°13° and lows 30°−1°, with 2.3 in59 mm of precipitation and 8 in20 cm of snow in a typical April.
- Record high
- 94°34° (1980)
- Record low
- −7°−22° (2018)
- Heating degree days
- 677
- Cooling degree days
- 1
Marvin in May
Highs average 68°20° and lows 43°6°, with 3.2 in80 mm of precipitation and 0.1 in0.3 cm of snow in a typical May.
- Record high
- 95°35° (1959)
- Record low
- 15°−9° (2005)
- Heating degree days
- 315
- Cooling degree days
- 20
Marvin in June
Highs average 77°25° and lows 54°12°, with 4 in100 mm of precipitation in a typical June.
- Record high
- 103°39° (1988)
- Record low
- 30°−1° (1964)
- Heating degree days
- 78
- Cooling degree days
- 87
Marvin in July
Highs average 82°28° and lows 58°15°, with 4.1 in103 mm of precipitation in a typical July.
- Record high
- 103°39° (1966)
- Record low
- 38°3° (1967)
- Heating degree days
- 23
- Cooling degree days
- 178
Marvin in August
Highs average 80°27° and lows 56°13°, with 3 in75 mm of precipitation in a typical August.
- Record high
- 102°39° (1965)
- Record low
- 32°0° (1987)
- Heating degree days
- 37
- Cooling degree days
- 140
Marvin in September
Highs average 73°23° and lows 48°9°, with 2.8 in70 mm of precipitation in a typical September.
- Record high
- 97°36° (2023)
- Record low
- 15°−9° (1974)
- Heating degree days
- 188
- Cooling degree days
- 51
Marvin in OctoberThis month
Highs average 58°14° and lows 34°1°, with 2.5 in64 mm of precipitation and 2 in5.1 cm of snow in a typical October.
- Record high
- 90°32° (2023)
- Record low
- 4°−16° (2020)
- Heating degree days
- 594
- Cooling degree days
- 4
Marvin in November
Highs average 40°4° and lows 21°−6°, with 0.9 in23 mm of precipitation and 5 in14 cm of snow in a typical November.
- Record high
- 76°24° (2020)
- Record low
- −25°−32° (1985)
- Heating degree days
- 1042
- Cooling degree days
- 0
Marvin in December
Highs average 26°−4° and lows 9°−13°, with 0.66 in17 mm of precipitation and 12 in30 cm of snow in a typical December.
- Record high
- 64°18° (2023)
- Record low
- −34°−37° (1967)
- Heating degree days
- 1483
- Cooling degree days
- 0