Kennebec weather by month
What a typical year looks like in Kennebec, South Dakota: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Kennebec, 0 km from Kennebec; records cover 1893–2026.
The year at a glance
- Precipitation a year
- 20.8 in528 mm
- Snow a year
- 40 in101 cm
- Last spring freeze
- May 12
- First fall freeze
- Sep 28
- Heating degree days
- 7,042
- Cooling degree days
- 929
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −14°−26° (heating, 99%) and 102°39° (cooling, 1%).
Month by month
Kennebec in January
Highs average 32°0° and lows 9°−13°, with 0.45 in11 mm of precipitation and 6 in14 cm of snow in a typical January.
- Record high
- 70°21° (1974)
- Record low
- −42°−41° (1912)
- Heating degree days
- 1382
- Cooling degree days
- 0
Kennebec in February
Highs average 36°2° and lows 13°−11°, with 0.59 in15 mm of precipitation and 8 in19 cm of snow in a typical February.
- Record high
- 76°24° (2016)
- Record low
- −45°−43° (1899)
- Heating degree days
- 1132
- Cooling degree days
- 0
Kennebec in March
Highs average 49°9° and lows 23°−5°, with 0.96 in24 mm of precipitation and 6 in14 cm of snow in a typical March.
- Record high
- 91°33° (1910)
- Record low
- −28°−33° (1960)
- Heating degree days
- 904
- Cooling degree days
- 0
Kennebec in April
Highs average 62°16° and lows 33°0°, with 2.3 in59 mm of precipitation and 6 in16 cm of snow in a typical April.
- Record high
- 99°37° (1980)
- Record low
- −7°−22° (1936)
- Heating degree days
- 536
- Cooling degree days
- 3
Kennebec in May
Highs average 72°22° and lows 45°7°, with 3.3 in84 mm of precipitation in a typical May.
- Record high
- 108°42° (1934)
- Record low
- 11°−12° (1909)
- Heating degree days
- 238
- Cooling degree days
- 41
Kennebec in June
Highs average 82°28° and lows 56°13°, with 3.5 in88 mm of precipitation in a typical June.
- Record high
- 112°44° (1931)
- Record low
- 28°−2° (1969)
- Heating degree days
- 40
- Cooling degree days
- 160
Kennebec in July
Highs average 90°32° and lows 61°16°, with 2.8 in72 mm of precipitation in a typical July.
- Record high
- 119°48° (1936)
- Record low
- 35°2° (1971)
- Heating degree days
- 5
- Cooling degree days
- 332
Kennebec in August
Highs average 88°31° and lows 59°15°, with 2.3 in59 mm of precipitation in a typical August.
- Record high
- 114°46° (1937)
- Record low
- 32°0° (1935)
- Heating degree days
- 13
- Cooling degree days
- 276
Kennebec in September
Highs average 80°27° and lows 50°10°, with 1.7 in44 mm of precipitation in a typical September.
- Record high
- 110°43° (1904)
- Record low
- 11°−12° (1926)
- Heating degree days
- 111
- Cooling degree days
- 108
Kennebec in OctoberThis month
Highs average 64°18° and lows 36°2°, with 1.6 in41 mm of precipitation and 1.6 in4.1 cm of snow in a typical October.
- Record high
- 101°38° (1922)
- Record low
- −19°−28° (1925)
- Heating degree days
- 483
- Cooling degree days
- 9
Kennebec in November
Highs average 47°8° and lows 22°−5°, with 0.71 in18 mm of precipitation and 6 in15 cm of snow in a typical November.
- Record high
- 89°32° (1999)
- Record low
- −23°−31° (1959)
- Heating degree days
- 909
- Cooling degree days
- 0
Kennebec in December
Highs average 34°1° and lows 13°−11°, with 0.47 in12 mm of precipitation and 7 in18 cm of snow in a typical December.
- Record high
- 74°23° (1939)
- Record low
- −35°−37° (1916)
- Heating degree days
- 1289
- Cooling degree days
- 0