Lexington, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Lexington, a city in Mclean County, Illinois.
This Afternoon
71°F
Light Rain Likely
Rain likely and a slight chance of thunderstorms. Partly sunny, with a high near 71. South wind around 18 mph, with gusts as high as 29 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Lexington
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 71°F | Light Rain Likely | 18 mph S | 55% |
| Tonight | 54°F | Light Rain | 14 to 18 mph S | 86% |
| Wednesday | 61°F | Chance Light Rain then Mostly Cloudy | 14 to 17 mph SW | 32% |
| Wednesday Night | 44°F | Mostly Cloudy | 12 mph SW | 5% |
| Thursday | 60°F | Partly Sunny | 10 to 16 mph WSW | 6% |
| Thursday Night | 41°F | Mostly Cloudy then Chance Light Rain | 5 to 8 mph NW | 29% |
| 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 | 3 mph W | 3% |
| Sunday | 59°F | Sunny | 3 to 10 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% |
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.