Chicago Ridge weather by month
What a typical year looks like in Chicago Ridge, Illinois: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at CHICAGO MIDWAY AP, 9 km from Chicago Ridge; records cover 1928–2026.
The year at a glance
- Precipitation a year
- 34.4 in874 mm
- Snow a year
- Rare
- Last spring freeze
- Apr 10
- First fall freeze
- Oct 28
- Heating degree days
- 5,752
- Cooling degree days
- 1,112
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 95°35° (cooling, 1%).
Month by month
Chicago Ridge in January
Highs average 33°0° and lows 19°−7°, with 1.5 in38 mm of precipitation in a typical January.
- Record high
- 67°19° (1950)
- Record low
- −22°−30° (2019)
- Heating degree days
- 1207
- Cooling degree days
- 0
Chicago Ridge in February
Highs average 37°3° and lows 23°−5°, with 1.5 in37 mm of precipitation in a typical February.
- Record high
- 75°24° (1976)
- Record low
- −20°−29° (1933)
- Heating degree days
- 988
- Cooling degree days
- 0
Chicago Ridge in March
Highs average 48°9° and lows 32°0°, with 1.9 in48 mm of precipitation in a typical March.
- Record high
- 86°30° (2012)
- Record low
- −7°−22° (1943)
- Heating degree days
- 788
- Cooling degree days
- 2
Chicago Ridge in April
Highs average 60°16° and lows 41°5°, with 3.6 in91 mm of precipitation in a typical April.
- Record high
- 92°33° (1942)
- Record low
- 16°−9° (1975)
- Heating degree days
- 439
- Cooling degree days
- 9
Chicago Ridge in May
Highs average 71°22° and lows 52°11°, with 4.1 in104 mm of precipitation in a typical May.
- Record high
- 102°39° (1934)
- Record low
- 29°−2° (1966)
- Heating degree days
- 178
- Cooling degree days
- 71
Chicago Ridge in June
Highs average 81°27° and lows 62°17°, with 4 in102 mm of precipitation in a typical June.
- Record high
- 107°42° (1934)
- Record low
- 35°2° (1945)
- Heating degree days
- 24
- Cooling degree days
- 222
Chicago Ridge in July
Highs average 85°29° and lows 68°20°, with 3.6 in90 mm of precipitation in a typical July.
- Record high
- 109°43° (1934)
- Record low
- 46°8° (1972)
- Heating degree days
- 1
- Cooling degree days
- 353
Chicago Ridge in August
Highs average 83°28° and lows 66°19°, with 4 in101 mm of precipitation in a typical August.
- Record high
- 104°40° (1934)
- Record low
- 43°6° (1965)
- Heating degree days
- 3
- Cooling degree days
- 299
Chicago Ridge in September
Highs average 76°25° and lows 59°15°, with 2.8 in70 mm of precipitation in a typical September.
- Record high
- 102°39° (1939)
- Record low
- 29°−2° (1942)
- Heating degree days
- 59
- Cooling degree days
- 136
Chicago Ridge in OctoberThis month
Highs average 63°17° and lows 47°8°, with 3.5 in88 mm of precipitation in a typical October.
- Record high
- 94°34° (1963)
- Record low
- 20°−7° (1930)
- Heating degree days
- 332
- Cooling degree days
- 20
Chicago Ridge in November
Highs average 49°10° and lows 35°2°, with 2.4 in60 mm of precipitation in a typical November.
- Record high
- 81°27° (1950)
- Record low
- −3°−19° (1930)
- Heating degree days
- 689
- Cooling degree days
- 0
Chicago Ridge in December
Highs average 38°3° and lows 25°−4°, with 1.8 in45 mm of precipitation in a typical December.
- Record high
- 72°22° (2012)
- Record low
- −14°−26° (1960)
- Heating degree days
- 1044
- Cooling degree days
- 0