Aurora weather by month
What a typical year looks like in Aurora, Iowa: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Oelwein 1e, 14 km from Aurora; records cover 2005–2026.
The year at a glance
- Precipitation a year
- 35.4 in898 mm
- Snow a year
- 39 in100 cm
- Last spring freeze
- Apr 26
- First fall freeze
- Oct 12
- Heating degree days
- 7,062
- Cooling degree days
- 776
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −15°−26° (heating, 99%) and 92°33° (cooling, 1%).
Month by month
Aurora in January
Highs average 27°−3° and lows 9°−13°, with 1.1 in29 mm of precipitation and 9 in22 cm of snow in a typical January.
- Record high
- 60°16° (2025)
- Record low
- −33°−36° (2019)
- Heating degree days
- 1470
- Cooling degree days
- 0
Aurora in February
Highs average 31°−1° and lows 12°−11°, with 1.1 in27 mm of precipitation and 11 in28 cm of snow in a typical February.
- Record high
- 75°24° (2024)
- Record low
- −33°−36° (2019)
- Heating degree days
- 1228
- Cooling degree days
- 0
Aurora in March
Highs average 45°7° and lows 24°−4°, with 1.9 in49 mm of precipitation and 4 in11 cm of snow in a typical March.
- Record high
- 84°29° (2026)
- Record low
- −16°−27° (2014)
- Heating degree days
- 948
- Cooling degree days
- 1
Aurora in April
Highs average 59°15° and lows 37°3°, with 3.5 in89 mm of precipitation and 2.2 in5.6 cm of snow in a typical April.
- Record high
- 87°31° (2009)
- Record low
- 12°−11° (2018)
- Heating degree days
- 514
- Cooling degree days
- 2
Aurora in May
Highs average 71°22° and lows 49°9°, with 4.2 in108 mm of precipitation and 0.1 in0.3 cm of snow in a typical May.
- Record high
- 96°36° (2018)
- Record low
- 30°−1° (2011)
- Heating degree days
- 208
- Cooling degree days
- 47
Aurora in June
Highs average 81°27° and lows 60°15°, with 5.4 in138 mm of precipitation in a typical June.
- Record high
- 99°37° (2022)
- Record low
- 38°3° (2023)
- Heating degree days
- 20
- Cooling degree days
- 177
Aurora in July
Highs average 83°28° and lows 63°17°, with 5.3 in135 mm of precipitation in a typical July.
- Record high
- 99°37° (2012)
- Record low
- 47°8° (2013)
- Heating degree days
- 5
- Cooling degree days
- 256
Aurora in August
Highs average 81°27° and lows 61°16°, with 3.9 in98 mm of precipitation in a typical August.
- Record high
- 96°36° (2024)
- Record low
- 44°7° (2009)
- Heating degree days
- 10
- Cooling degree days
- 198
Aurora in September
Highs average 76°24° and lows 52°11°, with 3.4 in86 mm of precipitation in a typical September.
- Record high
- 98°37° (2022)
- Record low
- 32°0° (2006)
- Heating degree days
- 111
- Cooling degree days
- 84
Aurora in OctoberThis month
Highs average 63°17° and lows 40°4°, with 2.6 in65 mm of precipitation and 0.3 in0.8 cm of snow in a typical October.
- Record high
- 89°32° (2006)
- Record low
- 17°−8° (2022)
- Heating degree days
- 436
- Cooling degree days
- 11
Aurora in November
Highs average 46°8° and lows 27°−3°, with 1.6 in40 mm of precipitation and 1.8 in4.6 cm of snow in a typical November.
- Record high
- 75°24° (2020)
- Record low
- −2°−19° (2019)
- Heating degree days
- 852
- Cooling degree days
- 0
Aurora in December
Highs average 33°0° and lows 16°−9°, with 1.4 in35 mm of precipitation and 11 in28 cm of snow in a typical December.
- Record high
- 71°22° (2021)
- Record low
- −21°−29° (2016)
- Heating degree days
- 1260
- Cooling degree days
- 0