Witt weather by month
What a typical year looks like in Witt, Illinois: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Hillsboro, 16 km from Witt; records cover 1895–2026.
The year at a glance
- Precipitation a year
- 42.1 in1069 mm
- Snow a year
- Rare
- Last spring freeze
- Apr 10
- First fall freeze
- Oct 18
- Heating degree days
- 4,799
- Cooling degree days
- 1,387
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 2°−17° (heating, 99%) and 97°36° (cooling, 1%).
Month by month
Witt in January
Highs average 38°4° and lows 21°−6°, with 2.5 in64 mm of precipitation in a typical January.
- Record high
- 75°24° (1909)
- Record low
- −21°−29° (1918)
- Heating degree days
- 1088
- Cooling degree days
- 0
Witt in February
Highs average 45°7° and lows 25°−4°, with 2.6 in66 mm of precipitation in a typical February.
- Record high
- 79°26° (1930)
- Record low
- −22°−30° (1905)
- Heating degree days
- 842
- Cooling degree days
- 0
Witt in March
Highs average 55°13° and lows 34°1°, with 3.1 in77 mm of precipitation in a typical March.
- Record high
- 90°32° (1929)
- Record low
- −10°−23° (1960)
- Heating degree days
- 631
- Cooling degree days
- 4
Witt in April
Highs average 68°20° and lows 44°7°, with 5 in128 mm of precipitation in a typical April.
- Record high
- 92°33° (1989)
- Record low
- 18°−8° (1920)
- Heating degree days
- 290
- Cooling degree days
- 26
Witt in May
Highs average 78°25° and lows 54°12°, with 5.1 in129 mm of precipitation in a typical May.
- Record high
- 99°37° (1895)
- Record low
- 28°−2° (1925)
- Heating degree days
- 89
- Cooling degree days
- 120
Witt in June
Highs average 86°30° and lows 63°17°, with 3.8 in97 mm of precipitation in a typical June.
- Record high
- 106°41° (1931)
- Record low
- 37°3° (1917)
- Heating degree days
- 7
- Cooling degree days
- 296
Witt in July
Highs average 89°32° and lows 67°19°, with 3.7 in95 mm of precipitation in a typical July.
- Record high
- 114°46° (1954)
- Record low
- 45°7° (1930)
- Heating degree days
- 0
- Cooling degree days
- 392
Witt in August
Highs average 87°31° and lows 65°18°, with 3.1 in80 mm of precipitation in a typical August.
- Record high
- 112°44° (1918)
- Record low
- 39°4° (1986)
- Heating degree days
- 1
- Cooling degree days
- 342
Witt in September
Highs average 82°28° and lows 57°14°, with 3.3 in84 mm of precipitation in a typical September.
- Record high
- 105°41° (1954)
- Record low
- 26°−3° (1899)
- Heating degree days
- 43
- Cooling degree days
- 169
Witt in OctoberThis month
Highs average 70°21° and lows 46°8°, with 3.4 in87 mm of precipitation in a typical October.
- Record high
- 95°35° (1922)
- Record low
- 17°−8° (1925)
- Heating degree days
- 261
- Cooling degree days
- 36
Witt in November
Highs average 55°13° and lows 35°2°, with 3.8 in96 mm of precipitation in a typical November.
- Record high
- 83°28° (1931)
- Record low
- −5°−21° (1950)
- Heating degree days
- 605
- Cooling degree days
- 2
Witt in December
Highs average 43°6° and lows 26°−3°, with 2.6 in67 mm of precipitation in a typical December.
- Record high
- 74°23° (1970)
- Record low
- −20°−29° (1989)
- Heating degree days
- 942
- Cooling degree days
- 0