Lawrenceville, Illinois climate: Normal weather by month, frost dates and records
Lawrenceville's normal year runs from 23°F January nights to 88°F July afternoons, with 41.7 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 13.2°C, January lows of −5°C, July highs of 31°C, 1,058 mm of precipitation a year.
- NOAA stationLawrenceville International Airport
- Station IDUSW00013809
- Location38.76°N 87.61°W
- Elevation429 ft (131 m)
- Population4,315
On October 23, the normal high in Lawrenceville is 66°F and the normal low 43°F, and the chance of measurable rain or snow is 30%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Lawrenceville.
- Jan 39° 23°
- Feb 44° 27°
- Mar 55° 35°
- Apr 67° 45°
- May 77° 56°
- Jun 85° 64°
- Jul 88° 67°
- Aug 87° 65°
- Sep 82° 57°
- Oct 69° 46°
- Nov 55° 35°
- Dec 43° 27°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like in Lawrenceville each month?
July is the warmest month, with normal highs of 88°F; January the coldest, with normal lows of 23°F. The most precipitation falls in May (4.85 in), the least in February (2.16 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 39°F | 23°F | 31.1°F | 3.16 | 8 | <1 | 24 | 9 h 40 min |
| February | 44°F | 27°F | 35.4°F | 2.16 | 8 | <1 | 21 | 10 h 40 min |
| March | 55°F | 35°F | 44.8°F | 3.16 | 11 | <1 | 13 | 11 h 50 min |
| April | 67°F | 45°F | 56.1°F | 4.24 | 11 | <1 | 2 | 13 h 10 min |
| May | 77°F | 56°F | 66.4°F | 4.85 | 12 | 2 | <1 | 14 h 20 min |
| June | 85°F | 64°F | 74.7°F | 4.38 | 11 | 10 | <1 | 14 h 50 min |
| July | 88°F | 67°F | 77.4°F | 4.22 | 11 | 13 | <1 | 14 h 40 min |
| August | 87°F | 65°F | 76.0°F | 2.94 | 9 | 9 | <1 | 13 h 40 min |
| September | 82°F | 57°F | 69.2°F | 2.94 | 8 | 6 | <1 | 12 h 30 min |
| October | 69°F | 46°F | 57.6°F | 3.51 | 9 | 1 | 2 | 11 h 20 min |
| November | 55°F | 35°F | 44.8°F | 3.44 | 9 | <1 | 13 | 10 h 10 min |
| December | 43°F | 27°F | 35.4°F | 2.66 | 9 | <1 | 22 | 9 h 30 min |
| Year (annual) | 66°F | 46°F | 55.7°F | 41.66 | 116 | 41 | 97 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 4°C | −5°C | −0.5°C | 80 mm |
| February | 7°C | −3°C | 1.9°C | 55 mm |
| March | 13°C | 1°C | 7.1°C | 80 mm |
| April | 20°C | 7°C | 13.4°C | 108 mm |
| May | 25°C | 13°C | 19.1°C | 123 mm |
| June | 30°C | 18°C | 23.7°C | 111 mm |
| July | 31°C | 20°C | 25.2°C | 107 mm |
| August | 30°C | 18°C | 24.4°C | 75 mm |
| September | 28°C | 14°C | 20.7°C | 75 mm |
| October | 21°C | 8°C | 14.2°C | 89 mm |
| November | 13°C | 2°C | 7.1°C | 87 mm |
| December | 6°C | −3°C | 1.9°C | 68 mm |
NOAA publishes no 1991-2020 snowfall normal for this station. Lawrenceville's own co-op station Lawrenceville (2 mi WSW) does: 16 inches of snow in a normal year (see the other stations below).
Source: NOAA NCEI 1991-2020 monthly normals, station USW00013809; annual normals. Wet days: 0.01 inch or more; 90°F days and freezing nights: NOAA's day counts. Daylight: sunrise to sunset on the 15th, computed from the latitude.
When is the best weather to visit Lawrenceville?
Normal highs sit between 65°F and 85°F in April, May, September and October. Of those, September has the fewest days with rain (8).
That is a measurement, not a recommendation: it counts the months whose normal afternoon high sits between 65°F and 85°F, where a light layer is enough by day.
Source: NOAA NCEI 1991-2020 monthly normals, station USW00013809.
When is the last frost in Lawrenceville?
In Lawrenceville, the last spring frost (32°F) comes after April 8 in half of years and after April 22 in one year in ten; the first autumn frost comes before October 26 in half of years and before October 13 in one year in ten.
Frost-free in half of yearsFrost in 1 to 9 years out of 10Frost most years
- Last spring frost, half of years after
- April 81 year in 10 after April 22; 9 in 10 after March 26
- First autumn frost, half of years before
- October 261 year in 10 before October 13; 9 in 10 before November 7
NOAA puts the median frost-free season at 200 days, and the season without a hard freeze (28°F) at 223 days.
A hard freeze (28°F) comes after March 29 in half of springs and before November 5 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Lawrenceville in zone 6b in ZIP code 62439, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, Lawrenceville's NOAA station is in zone 6b: the coldest night of a typical year reaches −3°F (23 complete years).
Frost dates for every NOAA station in Illinois · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USW00013809; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026; the station zone: ACIS daily lows, 1991-2020. A 10% date means one year in ten has a frost after it in spring or before it in autumn.
How hot and how cold does it get in Lawrenceville?
In a normal year in Lawrenceville, 41 days a year reach 90°F (1 of them 100°F or more), 97 nights fall to 32°F or colder and 116 days bring measurable precipitation.
- Days at 90°F or more
- 41a normal year
- Days at 100°F or more
- 1a normal year
- Nights at 32°F or colder
- 97a normal year
- Days that stay below freezing
- 20high of 32°F or less
- Days with 0.01 inch of precipitation
- 116a normal year
The highest temperature in this station's record (since 1996) is 108°F, on June 28, 2012; the lowest is −14°F, on January 28, 2026.
The wettest calendar year on that record is 2013, with 55.26 in.
Source: NOAA NCEI 1991-2020 annual normals, station USW00013809; records: ACIS (NOAA Regional Climate Centers), station USW00013809. Records use complete months only; a month missing more than three days is left out.
How sunny is Lawrenceville?
Over a year 75% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Lawrenceville, 4.1 kWh per square metre a day. August is the sunniest month (82%) and December the cloudiest (62%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 63% | 2.0 |
| February | 64% | 2.7 |
| March | 67% | 3.7 |
| April | 72% | 5.0 |
| May | 73% | 5.6 |
| June | 81% | 6.4 |
| July | 82% | 6.3 |
| August | 82% | 5.7 |
| September | 80% | 4.7 |
| October | 75% | 3.4 |
| November | 71% | 2.4 |
| December | 62% | 1.7 |
Source: NASA POWER solar climatology, 2001-2020 (CERES SYN1deg). Satellite-based, for the 1-degree cell (about 100 km across) around the station, so it describes the area rather than the airport.
How much heating and cooling does Lawrenceville need?
A normal year in Lawrenceville brings 4,715 heating degree days, 12% fewer than the median U.S. place (5,373), and 1,379 cooling degree days, 52% more than the median (908). Five months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 4,131 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,051 | 0 |
| February | 830 | 0 |
| March | 628 | 3 |
| April | 290 | 23 |
| May | 85 | 128 |
| June | 5 | 298 |
| July | 0 | 384 |
| August | 1 | 340 |
| September | 39 | 167 |
| October | 263 | 35 |
| November | 606 | 1 |
| December | 918 | 0 |
| Year (annual) | 4,715 | 1,379 |
Source: NOAA NCEI 1991-2020 monthly normals, station USW00013809. A degree day is one degree of a day's mean temperature below 65°F (heating) or above it (cooling); utilities use them to estimate energy use.
Has Lawrenceville been warmer than normal lately?
2025 averaged 56.0°F, 0.3°F above the 1991-2020 normal of 55.7°F. 3 of the 3 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 56.8°F | +1.1°F | 42.39 |
| 2023 | 58.4°F | +2.7°F | – |
| 2025 | 56.0°F | +0.3°F | – |
Source: observed years: ACIS, station USW00013809. A year counts only with all twelve months complete.
How does Lawrenceville's climate compare?
Lawrenceville is warmer than 127 of the other 143 places with their own NOAA record in Illinois, and wetter than 98. Across the 7,247 U.S. stations with normals, its annual mean of 55.7°F is warmer than 63%.
In the Köppen classification computed from these normals, Lawrenceville is Dfa: continental, no dry season, hot summer. What the classes mean.
Places with the most similar year elsewhere
Measured month by month on the normal high, low and precipitation, among places of 20,000 or more people in other states:
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers. Similarity: the root-mean-square difference of the 36 monthly figures, precipitation weighted so an inch counts like 6°F.
Which places near Lawrenceville share this climate record?
5 places have no NOAA station with 1991-2020 normals of their own, and this station is the nearest full record. A place's own climate can differ from these figures, by several degrees where it sits much higher or lower than the station, nearer the coast, or inside a large city's heat; for the larger places the next nearest records are named with their yearly mean, so the spread around them is visible, and places of 50,000 or more have their own page with NOAA's gridded normals.
- Oaktown, IN580 people · 12 mi NE
- Monroe City, IN489 people · 17 mi SE
- Bruceville, IN449 people · 10 mi E
- Ragsdale, IN131 people · 15 mi E
- Emison, IN48 people · 8 mi E
Source: Census Bureau 2024 Gazetteer (place centers) and Vintage 2024 population estimates. Distance and direction from the station to each place's center.
What do Lawrenceville's other NOAA stations record?
One more NOAA station keeps 1991-2020 normals in or near Lawrenceville. This page uses Lawrenceville International Airport; the other differs by site and elevation:
| Station | From this station | Elevation | Year | Jan low | Jul high | Precip. | Snow | Last frost |
|---|---|---|---|---|---|---|---|---|
| Lawrenceville (2 mi WSW) USC00114957 | 7 mi SW | 451 ft | 54.9°F | 21°F | 88°F | 46.6 | 16 | April 12 |
Source: NOAA NCEI 1991-2020 normals for each station. Last frost: the median last spring date of 32°F.
Questions about Lawrenceville's climate
What is the coldest month in Lawrenceville?
January, with a normal high of 39°F and a normal low of 23°F. The warmest is July (88°F by day, 67°F at night).
Does it snow in Lawrenceville?
Yes. NOAA publishes no 1991-2020 snowfall normal for Lawrenceville's NOAA station; Lawrenceville's own co-op station Lawrenceville (2 mi WSW) records 16 inches of snow in a normal year.
What is the rainiest month in Lawrenceville?
May, with 4.85 in of precipitation in a normal year; the driest is February with 2.16 in.
What plant hardiness zone is Lawrenceville in?
The USDA's 2023 map puts Lawrenceville in zone 6b in ZIP code 62439, the nearest ZIP area. By the same method at Lawrenceville's NOAA station, the coldest night of a typical year reaches −3°F (23 years, 1991-2020): zone 6b.
How late can frost come in Lawrenceville?
In half of years the last 32°F night comes after April 8; in one year in ten it comes after April 22. Waiting until April 22 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Illinois climateThe statewide normals and every place in the state
- Vincennes, IN7 miles from this station, 55.5°F a year
- Palestine, IL17 miles from this station, 55.1°F a year
- Freelandville, IN17 miles from this station, 54.4°F a year
- Robinson, IL19 miles from this station, 54.1°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made