Nebo weather by month
What a typical year looks like in Nebo, Illinois: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Clarksville L&d 24, 13 km from Nebo; records cover 1992–2026.
The year at a glance
- Precipitation a year
- 38.5 in977 mm
- Snow a year
- 12 in29 cm
- Last spring freeze
- Apr 5
- First fall freeze
- Oct 30
- Heating degree days
- 5,167
- Cooling degree days
- 1,323
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 0°−18° (heating, 99%) and 97°36° (cooling, 1%).
Month by month
Nebo in January
Highs average 37°3° and lows 20°−7°, with 2.1 in52 mm of precipitation and 5 in11 cm of snow in a typical January.
- Record high
- 73°23° (2008)
- Record low
- −20°−29° (2024)
- Heating degree days
- 1144
- Cooling degree days
- 0
Nebo in February
Highs average 41°5° and lows 24°−5°, with 1.7 in44 mm of precipitation and 3 in8 cm of snow in a typical February.
- Record high
- 81°27° (2024)
- Record low
- −15°−26° (1996)
- Heating degree days
- 911
- Cooling degree days
- 0
Nebo in March
Highs average 52°11° and lows 33°1°, with 3 in76 mm of precipitation and 1.4 in3.6 cm of snow in a typical March.
- Record high
- 91°33° (2026)
- Record low
- −3°−19° (2014)
- Heating degree days
- 695
- Cooling degree days
- 2
Nebo in April
Highs average 65°18° and lows 44°7°, with 4 in102 mm of precipitation and 0.1 in0.3 cm of snow in a typical April.
- Record high
- 91°33° (2006)
- Record low
- 22°−6° (2007)
- Heating degree days
- 334
- Cooling degree days
- 16
Nebo in May
Highs average 74°24° and lows 54°12°, with 4.6 in117 mm of precipitation in a typical May.
- Record high
- 99°37° (2004)
- Record low
- 29°−2° (1995)
- Heating degree days
- 113
- Cooling degree days
- 94
Nebo in June
Highs average 84°29° and lows 64°18°, with 4.4 in113 mm of precipitation in a typical June.
- Record high
- 105°41° (2012)
- Record low
- 42°6° (1999)
- Heating degree days
- 10
- Cooling degree days
- 275
Nebo in July
Highs average 87°31° and lows 68°20°, with 3.9 in99 mm of precipitation in a typical July.
- Record high
- 112°44° (2002)
- Record low
- 43°6° (2001)
- Heating degree days
- 1
- Cooling degree days
- 399
Nebo in August
Highs average 86°30° and lows 67°19°, with 3.5 in90 mm of precipitation in a typical August.
- Record high
- 104°40° (2007)
- Record low
- 44°7° (1999)
- Heating degree days
- 2
- Cooling degree days
- 350
Nebo in September
Highs average 79°26° and lows 58°15°, with 3.2 in82 mm of precipitation in a typical September.
- Record high
- 102°39° (2011)
- Record low
- 34°1° (2000)
- Heating degree days
- 47
- Cooling degree days
- 159
Nebo in OctoberThis month
Highs average 67°19° and lows 46°8°, with 2.9 in74 mm of precipitation in a typical October.
- Record high
- 93°34° (2006)
- Record low
- 25°−4° (2017)
- Heating degree days
- 284
- Cooling degree days
- 27
Nebo in November
Highs average 53°12° and lows 35°1°, with 3 in76 mm of precipitation and 0.1 in0.3 cm of snow in a typical November.
- Record high
- 84°29° (2016)
- Record low
- 6°−14° (2019)
- Heating degree days
- 637
- Cooling degree days
- 1
Nebo in December
Highs average 41°5° and lows 25°−4°, with 2.1 in52 mm of precipitation and 2.3 in5.8 cm of snow in a typical December.
- Record high
- 74°23° (2012)
- Record low
- −3°−19° (2000)
- Heating degree days
- 989
- Cooling degree days
- 0