La Grange Park weather by month
What a typical year looks like in La Grange Park, Illinois: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Chicago Ohare International Airport, 15 km from La Grange Park; records cover 1872–2026.
The year at a glance
- Precipitation a year
- 37.9 in962 mm
- Snow a year
- 38 in98 cm
- Last spring freeze
- Apr 21
- First fall freeze
- Oct 16
- Heating degree days
- 5,974
- Cooling degree days
- 1,003
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 94°34° (cooling, 1%).
Month by month
La Grange Park in January
Highs average 32°0° and lows 19°−7°, with 2 in51 mm of precipitation and 11 in29 cm of snow in a typical January.
- Record high
- 67°19° (1950)
- Record low
- −27°−33° (1985)
- Heating degree days
- 1234
- Cooling degree days
- 0
La Grange Park in February
Highs average 36°2° and lows 22°−6°, with 2 in50 mm of precipitation and 11 in27 cm of snow in a typical February.
- Record high
- 75°24° (1976)
- Record low
- −21°−29° (1899)
- Heating degree days
- 1015
- Cooling degree days
- 0
La Grange Park in March
Highs average 47°8° and lows 31°−1°, with 2.5 in62 mm of precipitation and 6 in14 cm of snow in a typical March.
- Record high
- 88°31° (1986)
- Record low
- −12°−24° (1873)
- Heating degree days
- 808
- Cooling degree days
- 2
La Grange Park in April
Highs average 59°15° and lows 40°5°, with 3.8 in95 mm of precipitation and 1.3 in3.3 cm of snow in a typical April.
- Record high
- 91°33° (1942)
- Record low
- 7°−14° (1982)
- Heating degree days
- 468
- Cooling degree days
- 8
La Grange Park in May
Highs average 71°21° and lows 51°10°, with 4.5 in114 mm of precipitation in a typical May.
- Record high
- 98°37° (1934)
- Record low
- 27°−3° (1875)
- Heating degree days
- 198
- Cooling degree days
- 60
La Grange Park in June
Highs average 80°27° and lows 61°16°, with 4.1 in104 mm of precipitation in a typical June.
- Record high
- 104°40° (1953)
- Record low
- 35°2° (1945)
- Heating degree days
- 31
- Cooling degree days
- 199
La Grange Park in July
Highs average 85°29° and lows 66°19°, with 3.7 in94 mm of precipitation in a typical July.
- Record high
- 105°41° (1934)
- Record low
- 45°7° (1983)
- Heating degree days
- 2
- Cooling degree days
- 326
La Grange Park in August
Highs average 83°28° and lows 65°18°, with 4.3 in108 mm of precipitation in a typical August.
- Record high
- 102°39° (1918)
- Record low
- 42°6° (1986)
- Heating degree days
- 4
- Cooling degree days
- 277
La Grange Park in September
Highs average 76°24° and lows 57°14°, with 3.2 in81 mm of precipitation in a typical September.
- Record high
- 101°38° (1953)
- Record low
- 29°−2° (1942)
- Heating degree days
- 77
- Cooling degree days
- 116
La Grange Park in OctoberThis month
Highs average 63°17° and lows 45°7°, with 3.4 in87 mm of precipitation and 0.2 in0.5 cm of snow in a typical October.
- Record high
- 94°34° (1963)
- Record low
- 14°−10° (1887)
- Heating degree days
- 355
- Cooling degree days
- 15
La Grange Park in November
Highs average 48°9° and lows 34°1°, with 2.4 in61 mm of precipitation and 1.8 in4.6 cm of snow in a typical November.
- Record high
- 81°27° (1950)
- Record low
- −2°−19° (1872)
- Heating degree days
- 713
- Cooling degree days
- 0
La Grange Park in December
Highs average 37°3° and lows 24°−4°, with 2.1 in54 mm of precipitation and 8 in19 cm of snow in a typical December.
- Record high
- 71°22° (1970)
- Record low
- −25°−32° (1983)
- Heating degree days
- 1069
- Cooling degree days
- 0