Owasa weather by month
What a typical year looks like in Owasa, Iowa: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Iowa Falls, 11 km from Owasa; records cover 1893–2026.
The year at a glance
- Precipitation a year
- 38.1 in969 mm
- Snow a year
- 28 in70 cm
- Last spring freeze
- Apr 28
- First fall freeze
- Oct 7
- Heating degree days
- 7,306
- Cooling degree days
- 693
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −12°−24° (heating, 99%) and 92°33° (cooling, 1%).
Month by month
Owasa in January
Highs average 26°−4° and lows 8°−13°, with 0.92 in23 mm of precipitation and 7 in18 cm of snow in a typical January.
- Record high
- 68°20° (2002)
- Record low
- −34°−37° (1912)
- Heating degree days
- 1491
- Cooling degree days
- 0
Owasa in February
Highs average 31°−1° and lows 12°−11°, with 1.2 in29 mm of precipitation and 7 in18 cm of snow in a typical February.
- Record high
- 76°24° (2024)
- Record low
- −32°−36° (1905)
- Heating degree days
- 1222
- Cooling degree days
- 0
Owasa in March
Highs average 44°6° and lows 24°−4°, with 2.1 in53 mm of precipitation and 5 in11 cm of snow in a typical March.
- Record high
- 88°31° (2026)
- Record low
- −31°−35° (1962)
- Heating degree days
- 963
- Cooling degree days
- 0
Owasa in April
Highs average 58°15° and lows 35°2°, with 3.8 in97 mm of precipitation and 1.3 in3.3 cm of snow in a typical April.
- Record high
- 97°36° (1980)
- Record low
- 3°−16° (1911)
- Heating degree days
- 549
- Cooling degree days
- 3
Owasa in May
Highs average 70°21° and lows 48°9°, with 5.6 in141 mm of precipitation in a typical May.
- Record high
- 107°42° (1934)
- Record low
- 18°−8° (1907)
- Heating degree days
- 231
- Cooling degree days
- 39
Owasa in June
Highs average 80°27° and lows 58°15°, with 6.1 in156 mm of precipitation in a typical June.
- Record high
- 107°42° (1934)
- Record low
- 34°1° (1903)
- Heating degree days
- 32
- Cooling degree days
- 157
Owasa in July
Highs average 83°28° and lows 62°17°, with 4.5 in115 mm of precipitation in a typical July.
- Record high
- 111°44° (1936)
- Record low
- 36°2° (1895)
- Heating degree days
- 6
- Cooling degree days
- 240
Owasa in August
Highs average 81°27° and lows 60°15°, with 4.4 in111 mm of precipitation in a typical August.
- Record high
- 108°42° (1936)
- Record low
- 31°−1° (1915)
- Heating degree days
- 16
- Cooling degree days
- 179
Owasa in September
Highs average 75°24° and lows 51°10°, with 3.5 in89 mm of precipitation in a typical September.
- Record high
- 101°38° (1939)
- Record low
- 19°−7° (1899)
- Heating degree days
- 137
- Cooling degree days
- 68
Owasa in OctoberThis month
Highs average 62°17° and lows 38°3°, with 2.6 in65 mm of precipitation in a typical October.
- Record high
- 95°35° (1963)
- Record low
- −5°−21° (1925)
- Heating degree days
- 472
- Cooling degree days
- 7
Owasa in November
Highs average 45°7° and lows 26°−4°, with 2 in50 mm of precipitation and 1.6 in4.1 cm of snow in a typical November.
- Record high
- 79°26° (1938)
- Record low
- −13°−25° (1977)
- Heating degree days
- 891
- Cooling degree days
- 0
Owasa in December
Highs average 32°0° and lows 15°−9°, with 1.5 in39 mm of precipitation and 6 in15 cm of snow in a typical December.
- Record high
- 70°21° (2021)
- Record low
- −31°−35° (1914)
- Heating degree days
- 1296
- Cooling degree days
- 0