Plankinton weather by month
What a typical year looks like in Plankinton, South Dakota: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at White Lake, 15 km from Plankinton; records cover 1920–2026.
The year at a glance
- Precipitation a year
- 23.9 in607 mm
- Snow a year
- 38 in96 cm
- Last spring freeze
- May 4
- First fall freeze
- Oct 6
- Heating degree days
- 7,585
- Cooling degree days
- 743
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −13°−25° (heating, 99%) and 99°37° (cooling, 1%).
Month by month
Plankinton in January
Highs average 27°−3° and lows 8°−13°, with 0.47 in12 mm of precipitation and 7 in18 cm of snow in a typical January.
- Record high
- 67°19° (1998)
- Record low
- −32°−36° (1970)
- Heating degree days
- 1468
- Cooling degree days
- 0
Plankinton in February
Highs average 32°0° and lows 12°−11°, with 0.68 in17 mm of precipitation and 8 in21 cm of snow in a typical February.
- Record high
- 73°23° (1992)
- Record low
- −32°−36° (1994)
- Heating degree days
- 1208
- Cooling degree days
- 0
Plankinton in March
Highs average 44°7° and lows 22°−6°, with 1 in26 mm of precipitation and 5 in13 cm of snow in a typical March.
- Record high
- 93°34° (1943)
- Record low
- −24°−31° (1962)
- Heating degree days
- 997
- Cooling degree days
- 0
Plankinton in April
Highs average 57°14° and lows 33°0°, with 3 in77 mm of precipitation and 5 in14 cm of snow in a typical April.
- Record high
- 98°37° (1934)
- Record low
- −2°−19° (1936)
- Heating degree days
- 603
- Cooling degree days
- 1
Plankinton in May
Highs average 69°20° and lows 46°8°, with 3.7 in94 mm of precipitation in a typical May.
- Record high
- 109°43° (1934)
- Record low
- 16°−9° (1980)
- Heating degree days
- 268
- Cooling degree days
- 28
Plankinton in June
Highs average 79°26° and lows 57°14°, with 3.6 in92 mm of precipitation in a typical June.
- Record high
- 111°44° (1936)
- Record low
- 32°0° (1998)
- Heating degree days
- 47
- Cooling degree days
- 136
Plankinton in July
Highs average 86°30° and lows 62°17°, with 3 in76 mm of precipitation in a typical July.
- Record high
- 115°46° (1934)
- Record low
- 36°2° (1947)
- Heating degree days
- 6
- Cooling degree days
- 281
Plankinton in August
Highs average 83°28° and lows 60°15°, with 2.6 in66 mm of precipitation in a typical August.
- Record high
- 116°47° (1934)
- Record low
- 36°2° (1950)
- Heating degree days
- 19
- Cooling degree days
- 214
Plankinton in September
Highs average 75°24° and lows 50°10°, with 2.6 in66 mm of precipitation in a typical September.
- Record high
- 106°41° (1929)
- Record low
- 17°−8° (1926)
- Heating degree days
- 143
- Cooling degree days
- 77
Plankinton in OctoberThis month
Highs average 60°15° and lows 36°2°, with 1.9 in47 mm of precipitation and 0.8 in2 cm of snow in a typical October.
- Record high
- 100°38° (1947)
- Record low
- −5°−21° (1925)
- Heating degree days
- 534
- Cooling degree days
- 6
Plankinton in November
Highs average 44°7° and lows 23°−5°, with 0.7 in18 mm of precipitation and 4 in9 cm of snow in a typical November.
- Record high
- 83°28° (2020)
- Record low
- −18°−28° (1959)
- Heating degree days
- 948
- Cooling degree days
- 0
Plankinton in December
Highs average 31°−1° and lows 13°−11°, with 0.62 in16 mm of precipitation and 7 in18 cm of snow in a typical December.
- Record high
- 72°22° (1998)
- Record low
- −32°−36° (1983)
- Heating degree days
- 1344
- Cooling degree days
- 0