Oskaloosa weather by month
What a typical year looks like in Oskaloosa, Kansas: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Valley Falls, 18 km from Oskaloosa; records cover 1948–2026.
The year at a glance
- Precipitation a year
- 37.6 in955 mm
- Snow a year
- 14 in34 cm
- Last spring freeze
- Apr 12
- First fall freeze
- Oct 26
- Heating degree days
- 5,119
- Cooling degree days
- 1,440
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −1°−18° (heating, 99%) and 102°39° (cooling, 1%).
Month by month
Oskaloosa in January
Highs average 39°4° and lows 18°−8°, with 0.94 in24 mm of precipitation and 4 in9 cm of snow in a typical January.
- Record high
- 76°24° (2015)
- Record low
- −12°−24° (2014)
- Heating degree days
- 1131
- Cooling degree days
- 0
Oskaloosa in February
Highs average 45°7° and lows 20°−6°, with 1.3 in33 mm of precipitation and 4 in11 cm of snow in a typical February.
- Record high
- 83°28° (2024)
- Record low
- −20°−29° (2021)
- Heating degree days
- 903
- Cooling degree days
- 0
Oskaloosa in March
Highs average 56°13° and lows 32°0°, with 2.3 in59 mm of precipitation and 1 in2.5 cm of snow in a typical March.
- Record high
- 96°36° (2026)
- Record low
- −9°−23° (2014)
- Heating degree days
- 663
- Cooling degree days
- 4
Oskaloosa in April
Highs average 67°19° and lows 42°6°, with 3.8 in97 mm of precipitation and 0.1 in0.3 cm of snow in a typical April.
- Record high
- 97°36° (2012)
- Record low
- 15°−9° (2018)
- Heating degree days
- 333
- Cooling degree days
- 15
Oskaloosa in May
Highs average 76°24° and lows 54°12°, with 5.6 in141 mm of precipitation in a typical May.
- Record high
- 98°37° (2018)
- Record low
- 31°−1° (2005)
- Heating degree days
- 114
- Cooling degree days
- 104
Oskaloosa in June
Highs average 86°30° and lows 64°18°, with 4.9 in124 mm of precipitation in a typical June.
- Record high
- 107°42° (2012)
- Record low
- 42°6° (1950)
- Heating degree days
- 5
- Cooling degree days
- 298
Oskaloosa in July
Highs average 91°33° and lows 68°20°, with 3.9 in99 mm of precipitation in a typical July.
- Record high
- 111°44° (2006)
- Record low
- 50°10° (1950)
- Heating degree days
- 0
- Cooling degree days
- 443
Oskaloosa in August
Highs average 89°31° and lows 65°19°, with 4.7 in119 mm of precipitation in a typical August.
- Record high
- 112°44° (2006)
- Record low
- 43°6° (1950)
- Heating degree days
- 2
- Cooling degree days
- 372
Oskaloosa in September
Highs average 81°27° and lows 56°14°, with 3.7 in94 mm of precipitation in a typical September.
- Record high
- 106°41° (1953)
- Record low
- 32°0° (1949)
- Heating degree days
- 56
- Cooling degree days
- 170
Oskaloosa in OctoberThis month
Highs average 70°21° and lows 45°7°, with 3 in77 mm of precipitation and 0.2 in0.5 cm of snow in a typical October.
- Record high
- 99°37° (2006)
- Record low
- 15°−9° (1952)
- Heating degree days
- 265
- Cooling degree days
- 33
Oskaloosa in November
Highs average 55°13° and lows 33°0°, with 1.9 in49 mm of precipitation and 0.9 in2.3 cm of snow in a typical November.
- Record high
- 86°30° (2006)
- Record low
- 3°−16° (1952)
- Heating degree days
- 635
- Cooling degree days
- 1
Oskaloosa in December
Highs average 42°6° and lows 23°−5°, with 1.6 in40 mm of precipitation and 3 in8 cm of snow in a typical December.
- Record high
- 76°24° (2021)
- Record low
- −9°−23° (2016)
- Heating degree days
- 1012
- Cooling degree days
- 0