Lexington, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Lexington, a city in Mclean County, Illinois.
Today
84°F
Sunny
Sunny, with a high near 84. South wind around 7 mph.
7-day forecast for Lexington
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 84°F | Sunny | 7 mph S | 0% |
| Tonight | 66°F | Partly Cloudy | 3 to 7 mph S | 4% |
| Wednesday | 83°F | Partly Sunny then Chance Showers And Thunderstorms | 8 mph SSW | 30% |
| Wednesday Night | 66°F | Chance Showers And Thunderstorms then Showers And Thunderstorms | 6 mph S | 80% |
| Thursday | 81°F | Showers And Thunderstorms | 6 mph SSW | 80% |
| Thursday Night | 63°F | Slight Chance Showers And Thunderstorms | 3 mph S | 22% |
| Friday | 83°F | Partly Sunny | 2 mph SSW | 11% |
| Friday Night | 65°F | Slight Chance Showers And Thunderstorms | 3 mph S | 22% |
| Saturday | 85°F | Mostly Sunny | 7 mph SSW | 11% |
| Saturday Night | 70°F | Mostly Clear | 5 to 9 mph SSW | 11% |
| Sunday | 88°F | Sunny | 9 to 13 mph SSW | 11% |
| Sunday Night | 71°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 12 mph SSW | 18% |
| Monday | 88°F | Slight Chance Showers And Thunderstorms | 12 mph SSW | 19% |
| Monday Night | 71°F | Slight Chance Showers And Thunderstorms | 10 mph SW | 29% |
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 Aug 4, 2026.