Gregory weather by month
What a typical year looks like in Gregory, South Dakota: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Gregory, 1 km from Gregory; records cover 1906–2026.
The year at a glance
- Precipitation a year
- 26.7 in677 mm
- Snow a year
- 45 in114 cm
- Last spring freeze
- May 12
- First fall freeze
- Oct 4
- Heating degree days
- 7,207
- Cooling degree days
- 778
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −11°−24° (heating, 99%) and 99°37° (cooling, 1%).
Month by month
Gregory in January
Highs average 32°0° and lows 10°−12°, with 0.55 in14 mm of precipitation and 7 in17 cm of snow in a typical January.
- Record high
- 71°22° (1974)
- Record low
- −31°−35° (2018)
- Heating degree days
- 1368
- Cooling degree days
- 0
Gregory in February
Highs average 36°2° and lows 13°−10°, with 0.75 in19 mm of precipitation and 9 in22 cm of snow in a typical February.
- Record high
- 76°24° (1995)
- Record low
- −28°−33° (1936)
- Heating degree days
- 1134
- Cooling degree days
- 0
Gregory in March
Highs average 47°8° and lows 23°−5°, with 1.3 in34 mm of precipitation and 5 in13 cm of snow in a typical March.
- Record high
- 91°33° (1943)
- Record low
- −25°−32° (1960)
- Heating degree days
- 941
- Cooling degree days
- 0
Gregory in April
Highs average 58°14° and lows 33°1°, with 3.1 in79 mm of precipitation and 5 in14 cm of snow in a typical April.
- Record high
- 98°37° (1980)
- Record low
- −4°−20° (1936)
- Heating degree days
- 588
- Cooling degree days
- 2
Gregory in May
Highs average 69°20° and lows 45°7°, with 4.1 in105 mm of precipitation in a typical May.
- Record high
- 103°39° (1934)
- Record low
- 16°−9° (1909)
- Heating degree days
- 279
- Cooling degree days
- 28
Gregory in June
Highs average 80°26° and lows 56°13°, with 4.2 in106 mm of precipitation in a typical June.
- Record high
- 107°42° (1936)
- Record low
- 32°0° (1969)
- Heating degree days
- 53
- Cooling degree days
- 135
Gregory in July
Highs average 87°30° and lows 62°17°, with 3 in76 mm of precipitation in a typical July.
- Record high
- 114°46° (1936)
- Record low
- 35°2° (1985)
- Heating degree days
- 7
- Cooling degree days
- 290
Gregory in August
Highs average 85°29° and lows 59°15°, with 3.1 in80 mm of precipitation in a typical August.
- Record high
- 113°45° (1936)
- Record low
- 33°1° (1935)
- Heating degree days
- 16
- Cooling degree days
- 233
Gregory in September
Highs average 77°25° and lows 50°10°, with 2.4 in61 mm of precipitation in a typical September.
- Record high
- 105°41° (1931)
- Record low
- 20°−7° (1984)
- Heating degree days
- 140
- Cooling degree days
- 84
Gregory in OctoberThis month
Highs average 62°16° and lows 36°2°, with 2.4 in60 mm of precipitation and 1.7 in4.3 cm of snow in a typical October.
- Record high
- 97°36° (1947)
- Record low
- 3°−16° (2020)
- Heating degree days
- 512
- Cooling degree days
- 6
Gregory in November
Highs average 47°8° and lows 23°−5°, with 0.95 in24 mm of precipitation and 7 in18 cm of snow in a typical November.
- Record high
- 85°29° (1999)
- Record low
- −24°−31° (1959)
- Heating degree days
- 903
- Cooling degree days
- 0
Gregory in December
Highs average 35°1° and lows 14°−10°, with 0.74 in19 mm of precipitation and 10 in26 cm of snow in a typical December.
- Record high
- 79°26° (1939)
- Record low
- −36°−38° (1983)
- Heating degree days
- 1266
- Cooling degree days
- 0