Lexington, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Lexington, a city in Mclean County, Illinois.
Today
60°F
Slight Chance Light Rain then Slight Chance Drizzle
A slight chance of rain before 8am, then a slight chance of drizzle. Mostly cloudy, with a high near 60. Southwest wind 13 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Lexington
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 60°F | Slight Chance Light Rain then Slight Chance Drizzle | 13 to 16 mph SW | 16% |
| Tonight | 44°F | Slight Chance Drizzle then Mostly Cloudy | 13 mph SW | 10% |
| Thursday | 58°F | Mostly Cloudy then Slight Chance Light Rain | 12 to 16 mph WSW | 19% |
| Thursday Night | 40°F | Chance Light Rain | 6 to 9 mph NW | 40% |
| Friday | 52°F | Partly Sunny | 9 to 13 mph NNW | 10% |
| Friday Night | 31°F | Partly Cloudy | 3 to 9 mph NNW | 0% |
| Saturday | 53°F | Sunny | 3 to 7 mph NW | 0% |
| Saturday Night | 31°F | Mostly Clear | 3 mph WNW | 1% |
| Sunday | 57°F | Sunny | 3 to 9 mph W | 1% |
| Sunday Night | 32°F | Clear | 6 mph W | 0% |
| Monday | 63°F | Sunny | 3 to 9 mph SW | 0% |
| Monday Night | 37°F | Mostly Clear | 7 mph WSW | 0% |
| Tuesday | 64°F | Sunny | 6 mph WNW | 0% |
| Tuesday Night | 37°F | Partly Cloudy | 3 mph NNW | 1% |
Forecast source: National Weather Service (api.weather.gov) for Lexington (40.647, -88.784). Updated through the day.
Growing snapshot for Lexington
Last spring frost
Apr 23
First fall frost
Oct 15
Growing season
174 days
Hardiness zone
6a
More local growing data for Lexington: nearby ZIP 61753 weather · frost dates · planting calendar · Illinois frost dates
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Climate data from the nearest NOAA station, Chenoa, Il (8.5 mi from Lexington). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.