Smithwick weather by month
What a typical year looks like in Smithwick, South Dakota: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Oelrichs, 12 km from Smithwick; records cover 1893–2026.
The year at a glance
- Precipitation a year
- 17.8 in453 mm
- Snow a year
- 44 in111 cm
- Last spring freeze
- May 15
- First fall freeze
- Oct 2
- Heating degree days
- 7,013
- Cooling degree days
- 694
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 102°39° (cooling, 1%).
Month by month
Smithwick in January
Highs average 36°2° and lows 13°−11°, with 0.41 in10 mm of precipitation and 6 in16 cm of snow in a typical January.
- Record high
- 69°21° (1989)
- Record low
- −36°−38° (1909)
- Heating degree days
- 1260
- Cooling degree days
- 0
Smithwick in February
Highs average 40°4° and lows 14°−10°, with 0.5 in13 mm of precipitation and 7 in19 cm of snow in a typical February.
- Record high
- 78°26° (1896)
- Record low
- −41° (1899)
- Heating degree days
- 1062
- Cooling degree days
- 0
Smithwick in March
Highs average 51°11° and lows 23°−5°, with 1 in26 mm of precipitation and 7 in18 cm of snow in a typical March.
- Record high
- 91°33° (2026)
- Record low
- −24°−31° (1913)
- Heating degree days
- 874
- Cooling degree days
- 0
Smithwick in April
Highs average 60°15° and lows 31°−1°, with 2 in52 mm of precipitation and 5 in13 cm of snow in a typical April.
- Record high
- 98°37° (1898)
- Record low
- −7°−22° (1936)
- Heating degree days
- 597
- Cooling degree days
- 0
Smithwick in May
Highs average 69°21° and lows 41°5°, with 3.3 in83 mm of precipitation and 0.3 in0.8 cm of snow in a typical May.
- Record high
- 103°39° (1934)
- Record low
- 14°−10° (2005)
- Heating degree days
- 320
- Cooling degree days
- 14
Smithwick in June
Highs average 80°27° and lows 51°11°, with 3.4 in85 mm of precipitation in a typical June.
- Record high
- 110°43° (1893)
- Record low
- 27°−3° (1969)
- Heating degree days
- 78
- Cooling degree days
- 98
Smithwick in July
Highs average 89°32° and lows 58°14°, with 2 in51 mm of precipitation in a typical July.
- Record high
- 114°46° (1973)
- Record low
- 34°1° (1915)
- Heating degree days
- 10
- Cooling degree days
- 272
Smithwick in August
Highs average 88°31° and lows 56°13°, with 1.5 in39 mm of precipitation in a typical August.
- Record high
- 110°43° (1937)
- Record low
- 26°−3° (1899)
- Heating degree days
- 17
- Cooling degree days
- 236
Smithwick in September
Highs average 79°26° and lows 46°8°, with 1.4 in36 mm of precipitation and 0.2 in0.5 cm of snow in a typical September.
- Record high
- 109°43° (1899)
- Record low
- 9°−13° (1926)
- Heating degree days
- 146
- Cooling degree days
- 71
Smithwick in OctoberThis month
Highs average 63°17° and lows 33°1°, with 1.4 in34 mm of precipitation and 4 in9 cm of snow in a typical October.
- Record high
- 96°36° (1897)
- Record low
- −11°−24° (1991)
- Heating degree days
- 528
- Cooling degree days
- 3
Smithwick in November
Highs average 48°9° and lows 22°−6°, with 0.58 in15 mm of precipitation and 6 in14 cm of snow in a typical November.
- Record high
- 87°31° (1894)
- Record low
- −22°−30° (1916)
- Heating degree days
- 894
- Cooling degree days
- 0
Smithwick in December
Highs average 37°3° and lows 14°−10°, with 0.41 in10 mm of precipitation and 8 in21 cm of snow in a typical December.
- Record high
- 74°23° (1941)
- Record low
- −37°−38° (1989)
- Heating degree days
- 1227
- Cooling degree days
- 0