Lexington, IL Weather & Growing Conditions
Tonight
54°F
Light Rain
Rain and a slight chance of thunderstorms. Mostly cloudy. Low around 54, with temperatures rising to around 59 overnight. South wind 14 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 54°F | Light Rain | 14 to 17 mph S | 86% |
| Wednesday | 61°F | Chance Light Rain then Mostly Cloudy | 14 to 17 mph SW | 31% |
| Wednesday Night | 44°F | Mostly Cloudy | 12 mph SW | 5% |
| Thursday | 59°F | Partly Sunny | 10 to 15 mph WSW | 6% |
| Thursday Night | 41°F | Mostly Cloudy then Chance Light Rain | 5 to 8 mph NW | 28% |
| Friday | 55°F | Slight Chance Light Rain then Mostly Cloudy | 7 to 12 mph NNW | 18% |
| Friday Night | 33°F | Mostly Cloudy | 3 to 9 mph NNW | 5% |
| Saturday | 53°F | Mostly Sunny | 5 mph WNW | 3% |
| Saturday Night | 32°F | Partly Cloudy | 5 mph W | 3% |
| Sunday | 58°F | Sunny | 5 to 9 mph W | 12% |
| Sunday Night | 33°F | Mostly Clear | 7 mph W | 8% |
| Monday | 63°F | Sunny | 5 to 12 mph WSW | 3% |
| Monday Night | 38°F | Mostly Clear | 6 to 9 mph WSW | 2% |
| Tuesday | 65°F | Sunny | 8 mph WNW | 1% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Lexington, IL
Last spring frost
Apr 23
First fall frost
Oct 15
Growing season
174 days
Hardiness zone
6a
Explore more for Lexington, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Chenoa, Il (8.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.