Lenzburg, IL Weather & Growing Conditions
This Afternoon
74°F
Rain
Rain and a slight chance of thunderstorms. Cloudy. High near 74, with temperatures falling to around 69 in the afternoon. South wind around 16 mph, with gusts as high as 28 mph. Chance of precipitation is 90%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 74°F | Rain | 16 mph S | 88% |
| Tonight | 55°F | Rain | 7 to 16 mph S | 98% |
| Wednesday | 65°F | Mostly Cloudy | 5 to 12 mph SW | 9% |
| Wednesday Night | 43°F | Partly Cloudy | 3 mph SW | 0% |
| Thursday | 68°F | Sunny | 3 to 9 mph W | 0% |
| Thursday Night | 44°F | Mostly Cloudy | 5 mph NW | 6% |
| Friday | 59°F | Mostly Cloudy | 5 to 9 mph NW | 4% |
| Friday Night | 39°F | Partly Cloudy | 5 mph N | 1% |
| Saturday | 56°F | Partly Sunny | 3 mph NW | 0% |
| Saturday Night | 35°F | Partly Cloudy | 1 mph NW | 0% |
| Sunday | 62°F | Sunny | 1 to 6 mph W | 6% |
| Sunday Night | 35°F | Mostly Clear | 2 mph NW | 5% |
| Monday | 66°F | Sunny | 1 to 6 mph W | 2% |
| Monday Night | 39°F | Mostly Clear | 2 mph SW | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Lenzburg, IL
Last spring frost
Apr 12
First fall frost
Oct 22
Growing season
191 days
Hardiness zone
6b
Explore more for Lenzburg, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Sparta 1 W, Il (14 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.