Lawrenceville weather by month
What a typical year looks like in Lawrenceville, Illinois: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Lawrenceville 2wsw, 3 km from Lawrenceville; records cover 1963–2026.
The year at a glance
- Precipitation a year
- 46.6 in1184 mm
- Snow a year
- 16 in39 cm
- Last spring freeze
- Apr 6
- First fall freeze
- Oct 26
- Heating degree days
- 4,928
- Cooling degree days
- 1,290
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 3°−16° (heating, 99%) and 97°36° (cooling, 1%).
Month by month
Lawrenceville in January
Highs average 39°4° and lows 21°−6°, with 3.3 in83 mm of precipitation and 4 in10 cm of snow in a typical January.
- Record high
- 68°20° (2026)
- Record low
- −19°−28° (1994)
- Heating degree days
- 1078
- Cooling degree days
- 0
Lawrenceville in February
Highs average 44°7° and lows 25°−4°, with 2.7 in68 mm of precipitation and 4 in11 cm of snow in a typical February.
- Record high
- 76°24° (1996)
- Record low
- −11°−24° (1996)
- Heating degree days
- 861
- Cooling degree days
- 0
Lawrenceville in March
Highs average 55°13° and lows 33°0°, with 3.6 in92 mm of precipitation and 1.8 in4.6 cm of snow in a typical March.
- Record high
- 86°30° (2026)
- Record low
- 6°−14° (1993)
- Heating degree days
- 664
- Cooling degree days
- 2
Lawrenceville in April
Highs average 67°19° and lows 43°6°, with 4.4 in111 mm of precipitation in a typical April.
- Record high
- 87°31° (2024)
- Record low
- 22°−6° (2021)
- Heating degree days
- 326
- Cooling degree days
- 17
Lawrenceville in May
Highs average 77°25° and lows 54°12°, with 5.3 in135 mm of precipitation in a typical May.
- Record high
- 95°35° (2012)
- Record low
- 32°0° (1963)
- Heating degree days
- 101
- Cooling degree days
- 107
Lawrenceville in June
Highs average 86°30° and lows 63°17°, with 5.2 in131 mm of precipitation in a typical June.
- Record high
- 107°42° (2012)
- Record low
- 41°5° (2003)
- Heating degree days
- 9
- Cooling degree days
- 283
Lawrenceville in July
Highs average 88°31° and lows 66°19°, with 4.2 in105 mm of precipitation in a typical July.
- Record high
- 106°41° (2012)
- Record low
- 50°10° (2013)
- Heating degree days
- 0
- Cooling degree days
- 371
Lawrenceville in August
Highs average 87°31° and lows 63°17°, with 3.1 in78 mm of precipitation in a typical August.
- Record high
- 103°39° (2007)
- Record low
- 46°8° (2025)
- Heating degree days
- 2
- Cooling degree days
- 318
Lawrenceville in September
Highs average 82°28° and lows 56°13°, with 3.6 in90 mm of precipitation in a typical September.
- Record high
- 99°37° (2011)
- Record low
- 34°1° (1995)
- Heating degree days
- 50
- Cooling degree days
- 161
Lawrenceville in OctoberThis month
Highs average 70°21° and lows 44°7°, with 3.9 in98 mm of precipitation and 0.1 in0.3 cm of snow in a typical October.
- Record high
- 95°35° (2019)
- Record low
- 21°−6° (2023)
- Heating degree days
- 283
- Cooling degree days
- 30
Lawrenceville in November
Highs average 55°13° and lows 34°1°, with 4.1 in104 mm of precipitation and 0.4 in1 cm of snow in a typical November.
- Record high
- 82°28° (2000)
- Record low
- 14°−10° (1997)
- Heating degree days
- 612
- Cooling degree days
- 1
Lawrenceville in December
Highs average 44°6° and lows 26°−4°, with 3.4 in87 mm of precipitation and 5 in13 cm of snow in a typical December.
- Record high
- 77°25° (2001)
- Record low
- −8°−22° (2022)
- Heating degree days
- 942
- Cooling degree days
- 0