White Rock Colony weather by month
What a typical year looks like in White Rock 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 Wheaton, 15 km from White Rock Colony; records cover 1914–2026.
The year at a glance
- Precipitation a year
- 25.3 in643 mm
- Snow a year
- 43 in109 cm
- Last spring freeze
- Apr 30
- First fall freeze
- Oct 8
- Heating degree days
- 8,323
- Cooling degree days
- 666
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −18°−28° (heating, 99%) and 94°34° (cooling, 1%).
Month by month
White Rock Colony in January
Highs average 20°−7° and lows 3°−16°, with 0.78 in20 mm of precipitation and 8 in20 cm of snow in a typical January.
- Record high
- 61°16° (1981)
- Record low
- −38°−39° (1916)
- Heating degree days
- 1661
- Cooling degree days
- 0
White Rock Colony in February
Highs average 25°−4° and lows 6°−14°, with 0.71 in18 mm of precipitation and 9 in23 cm of snow in a typical February.
- Record high
- 66°19° (1991)
- Record low
- −35°−37° (1936)
- Heating degree days
- 1387
- Cooling degree days
- 0
White Rock Colony in March
Highs average 38°3° and lows 20°−7°, with 1.2 in30 mm of precipitation and 7 in18 cm of snow in a typical March.
- Record high
- 84°29° (1963)
- Record low
- −30°−34° (1948)
- Heating degree days
- 1118
- Cooling degree days
- 0
White Rock Colony in April
Highs average 55°13° and lows 33°1°, with 2.3 in58 mm of precipitation and 5 in13 cm of snow in a typical April.
- Record high
- 98°37° (1980)
- Record low
- −7°−22° (1924)
- Heating degree days
- 636
- Cooling degree days
- 1
White Rock Colony in May
Highs average 69°20° and lows 47°8°, with 2.8 in71 mm of precipitation in a typical May.
- Record high
- 106°41° (1934)
- Record low
- 14°−10° (1925)
- Heating degree days
- 262
- Cooling degree days
- 36
White Rock Colony in June
Highs average 78°26° and lows 59°15°, with 4.2 in107 mm of precipitation in a typical June.
- Record high
- 106°41° (1931)
- Record low
- 31°−1° (1915)
- Heating degree days
- 43
- Cooling degree days
- 145
White Rock Colony in July
Highs average 82°28° and lows 62°17°, with 3.5 in89 mm of precipitation in a typical July.
- Record high
- 113°45° (1936)
- Record low
- 39°4° (1972)
- Heating degree days
- 9
- Cooling degree days
- 238
White Rock Colony in August
Highs average 81°27° and lows 60°15°, with 2.7 in69 mm of precipitation in a typical August.
- Record high
- 109°43° (1947)
- Record low
- 31°−1° (1931)
- Heating degree days
- 22
- Cooling degree days
- 182
White Rock Colony in September
Highs average 73°23° and lows 50°10°, with 2.9 in74 mm of precipitation in a typical September.
- Record high
- 108°42° (1931)
- Record low
- 18°−8° (1939)
- Heating degree days
- 163
- Cooling degree days
- 59
White Rock Colony in OctoberThis month
Highs average 58°14° and lows 37°3°, with 2.3 in58 mm of precipitation and 1 in2.5 cm of snow in a typical October.
- Record high
- 96°36° (1963)
- Record low
- −4°−20° (1919)
- Heating degree days
- 557
- Cooling degree days
- 5
White Rock Colony in November
Highs average 41°5° and lows 23°−5°, with 1.1 in27 mm of precipitation and 4 in10 cm of snow in a typical November.
- Record high
- 81°27° (1950)
- Record low
- −17°−27° (1951)
- Heating degree days
- 1000
- Cooling degree days
- 0
White Rock Colony in December
Highs average 26°−4° and lows 10°−12°, with 0.82 in21 mm of precipitation and 9 in22 cm of snow in a typical December.
- Record high
- 74°23° (1939)
- Record low
- −34°−37° (1916)
- Heating degree days
- 1465
- Cooling degree days
- 0