Flora weather by month
What a typical year looks like in Flora, Illinois: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Flora, 2 km from Flora; records cover 2000–2026.
The year at a glance
- Precipitation a year
- 48 in1219 mm
- Snow a year
- 12 in29 cm
- Last spring freeze
- Apr 13
- First fall freeze
- Oct 28
- Heating degree days
- 4,931
- Cooling degree days
- 1,337
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 3°−16° (heating, 99%) and 98°37° (cooling, 1%).
Month by month
Flora in January
Highs average 39°4° and lows 21°−6°, with 3 in75 mm of precipitation and 3 in8 cm of snow in a typical January.
- Record high
- 70°21° (2002)
- Record low
- −14°−26° (2014)
- Heating degree days
- 1084
- Cooling degree days
- 0
Flora in February
Highs average 44°7° and lows 25°−4°, with 2.5 in65 mm of precipitation and 3 in8 cm of snow in a typical February.
- Record high
- 78°26° (2024)
- Record low
- −9°−23° (2004)
- Heating degree days
- 855
- Cooling degree days
- 0
Flora in March
Highs average 55°13° and lows 33°1°, with 3.8 in97 mm of precipitation and 0.8 in2 cm of snow in a typical March.
- Record high
- 88°31° (2026)
- Record low
- 2°−17° (2015)
- Heating degree days
- 662
- Cooling degree days
- 3
Flora in April
Highs average 67°19° and lows 44°6°, with 5.3 in135 mm of precipitation in a typical April.
- Record high
- 89°32° (2002)
- Record low
- 23°−5° (2021)
- Heating degree days
- 312
- Cooling degree days
- 21
Flora in May
Highs average 77°25° and lows 54°12°, with 5.1 in129 mm of precipitation in a typical May.
- Record high
- 95°35° (2012)
- Record low
- 34°1° (2002)
- Heating degree days
- 100
- Cooling degree days
- 114
Flora in June
Highs average 86°30° and lows 63°17°, with 5.9 in149 mm of precipitation in a typical June.
- Record high
- 105°41° (2012)
- Record low
- 41°5° (2003)
- Heating degree days
- 6
- Cooling degree days
- 296
Flora in July
Highs average 89°32° and lows 66°19°, with 4.2 in106 mm of precipitation in a typical July.
- Record high
- 107°42° (2012)
- Record low
- 51°11° (2013)
- Heating degree days
- 0
- Cooling degree days
- 385
Flora in August
Highs average 88°31° and lows 63°17°, with 3.7 in95 mm of precipitation in a typical August.
- Record high
- 102°39° (2012)
- Record low
- 47°8° (2004)
- Heating degree days
- 2
- Cooling degree days
- 330
Flora in September
Highs average 82°28° and lows 55°13°, with 3.3 in85 mm of precipitation in a typical September.
- Record high
- 103°39° (2026)
- Record low
- 36°2° (2001)
- Heating degree days
- 51
- Cooling degree days
- 156
Flora in OctoberThis month
Highs average 69°21° and lows 44°7°, with 3.7 in93 mm of precipitation in a typical October.
- Record high
- 95°35° (2019)
- Record low
- 24°−4° (2001)
- Heating degree days
- 290
- Cooling degree days
- 31
Flora in November
Highs average 55°13° and lows 34°1°, with 4.2 in107 mm of precipitation in a typical November.
- Record high
- 83°28° (2000)
- Record low
- 6°−14° (2019)
- Heating degree days
- 625
- Cooling degree days
- 1
Flora in December
Highs average 43°6° and lows 26°−3°, with 3.3 in83 mm of precipitation and 5 in11 cm of snow in a typical December.
- Record high
- 72°22° (2021)
- Record low
- −7°−22° (2022)
- Heating degree days
- 944
- Cooling degree days
- 0