Westwood Colony weather by month
What a typical year looks like in Westwood Colony, South Dakota: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Britton, 12 km from Westwood Colony; records cover 1893–2026.
The year at a glance
- Precipitation a year
- 24.3 in616 mm
- Snow a year
- 45 in115 cm
- Last spring freeze
- May 8
- First fall freeze
- Oct 2
- Heating degree days
- 8,742
- Cooling degree days
- 505
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 94°34° (cooling, 1%).
Month by month
Westwood Colony in January
Highs average 20°−6° and lows 0°−18°, with 0.66 in17 mm of precipitation and 8 in21 cm of snow in a typical January.
- Record high
- 66°19° (1981)
- Record low
- −44°−42° (1916)
- Heating degree days
- 1692
- Cooling degree days
- 0
Westwood Colony in February
Highs average 25°−4° and lows 5°−15°, with 0.64 in16 mm of precipitation and 10 in25 cm of snow in a typical February.
- Record high
- 67°19° (1958)
- Record low
- −42°−41° (1936)
- Heating degree days
- 1400
- Cooling degree days
- 0
Westwood Colony in March
Highs average 39°4° and lows 18°−8°, with 0.87 in22 mm of precipitation and 6 in15 cm of snow in a typical March.
- Record high
- 84°29° (1946)
- Record low
- −29°−34° (2019)
- Heating degree days
- 1142
- Cooling degree days
- 0
Westwood Colony in April
Highs average 55°13° and lows 30°−1°, with 2 in50 mm of precipitation and 5 in13 cm of snow in a typical April.
- Record high
- 100°38° (1980)
- Record low
- −3°−19° (1936)
- Heating degree days
- 674
- Cooling degree days
- 1
Westwood Colony in May
Highs average 68°20° and lows 43°6°, with 3 in77 mm of precipitation in a typical May.
- Record high
- 109°43° (1934)
- Record low
- 17°−8° (1925)
- Heating degree days
- 313
- Cooling degree days
- 22
Westwood Colony in June
Highs average 78°26° and lows 54°12°, with 4.1 in105 mm of precipitation in a typical June.
- Record high
- 108°42° (1988)
- Record low
- 30°−1° (1894)
- Heating degree days
- 74
- Cooling degree days
- 98
Westwood Colony in July
Highs average 83°28° and lows 58°15°, with 4.4 in112 mm of precipitation in a typical July.
- Record high
- 114°46° (1936)
- Record low
- 37°3° (1917)
- Heating degree days
- 22
- Cooling degree days
- 189
Westwood Colony in August
Highs average 81°27° and lows 56°13°, with 2.5 in64 mm of precipitation in a typical August.
- Record high
- 114°46° (1938)
- Record low
- 31°−1° (1934)
- Heating degree days
- 36
- Cooling degree days
- 146
Westwood Colony in September
Highs average 73°23° and lows 47°8°, with 2.6 in65 mm of precipitation in a typical September.
- Record high
- 107°42° (1931)
- Record low
- 11°−12° (1893)
- Heating degree days
- 201
- Cooling degree days
- 46
Westwood Colony in OctoberThis month
Highs average 57°14° and lows 34°1°, with 2.2 in55 mm of precipitation and 1.2 in3 cm of snow in a typical October.
- Record high
- 94°34° (1963)
- Record low
- −4°−20° (1925)
- Heating degree days
- 609
- Cooling degree days
- 3
Westwood Colony in November
Highs average 39°4° and lows 19°−7°, with 0.69 in18 mm of precipitation and 5 in13 cm of snow in a typical November.
- Record high
- 79°26° (1924)
- Record low
- −24°−31° (1977)
- Heating degree days
- 1071
- Cooling degree days
- 0
Westwood Colony in December
Highs average 26°−4° and lows 7°−14°, with 0.66 in17 mm of precipitation and 10 in25 cm of snow in a typical December.
- Record high
- 65°18° (1939)
- Record low
- −40° (1916)
- Heating degree days
- 1508
- Cooling degree days
- 0