Elvaston weather by month
What a typical year looks like in Elvaston, Illinois: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Keokuk L&d 19, 11 km from Elvaston; records cover 1896–2026.
The year at a glance
- Precipitation a year
- 39.8 in1010 mm
- Snow a year
- Rare
- Last spring freeze
- Apr 6
- First fall freeze
- Oct 27
- Heating degree days
- 5,774
- Cooling degree days
- 1,103
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −3°−19° (heating, 99%) and 97°36° (cooling, 1%).
Month by month
Elvaston in January
Highs average 33°1° and lows 17°−8°, with 1.6 in41 mm of precipitation in a typical January.
- Record high
- 72°22° (1909)
- Record low
- −22°−30° (1912)
- Heating degree days
- 1244
- Cooling degree days
- 0
Elvaston in February
Highs average 38°3° and lows 20°−6°, with 1.8 in46 mm of precipitation in a typical February.
- Record high
- 78°26° (1930)
- Record low
- −27°−33° (1905)
- Heating degree days
- 1004
- Cooling degree days
- 0
Elvaston in March
Highs average 50°10° and lows 31°−1°, with 2.5 in65 mm of precipitation in a typical March.
- Record high
- 88°31° (1907)
- Record low
- −11°−24° (1960)
- Heating degree days
- 772
- Cooling degree days
- 2
Elvaston in April
Highs average 62°17° and lows 41°5°, with 4.2 in107 mm of precipitation in a typical April.
- Record high
- 92°33° (1930)
- Record low
- 11°−12° (2018)
- Heating degree days
- 402
- Cooling degree days
- 9
Elvaston in May
Highs average 73°23° and lows 53°11°, with 5.3 in134 mm of precipitation in a typical May.
- Record high
- 102°39° (1934)
- Record low
- 28°−2° (1907)
- Heating degree days
- 144
- Cooling degree days
- 73
Elvaston in June
Highs average 82°28° and lows 63°17°, with 5.2 in132 mm of precipitation in a typical June.
- Record high
- 104°40° (1934)
- Record low
- 40°4° (1913)
- Heating degree days
- 15
- Cooling degree days
- 232
Elvaston in July
Highs average 86°30° and lows 67°19°, with 4.1 in104 mm of precipitation in a typical July.
- Record high
- 113°45° (1936)
- Record low
- 50°10° (1967)
- Heating degree days
- 1
- Cooling degree days
- 345
Elvaston in August
Highs average 84°29° and lows 65°18°, with 3.8 in96 mm of precipitation in a typical August.
- Record high
- 110°43° (1934)
- Record low
- 43°6° (1915)
- Heating degree days
- 3
- Cooling degree days
- 295
Elvaston in September
Highs average 77°25° and lows 56°13°, with 3.4 in87 mm of precipitation in a typical September.
- Record high
- 102°39° (2011)
- Record low
- 30°−1° (1899)
- Heating degree days
- 73
- Cooling degree days
- 128
Elvaston in OctoberThis month
Highs average 65°18° and lows 44°7°, with 3.3 in84 mm of precipitation in a typical October.
- Record high
- 94°34° (1939)
- Record low
- 13°−11° (1925)
- Heating degree days
- 338
- Cooling degree days
- 19
Elvaston in November
Highs average 51°10° and lows 33°0°, with 2.6 in65 mm of precipitation in a typical November.
- Record high
- 82°28° (1950)
- Record low
- −3°−19° (1964)
- Heating degree days
- 704
- Cooling degree days
- 0
Elvaston in December
Highs average 38°3° and lows 23°−5°, with 2 in50 mm of precipitation in a typical December.
- Record high
- 73°23° (2012)
- Record low
- −20°−29° (1989)
- Heating degree days
- 1074
- Cooling degree days
- 0