Lenzburg, IL Weather & Growing Conditions
This Afternoon
97°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Sunny, with a high near 97. Heat index values as high as 105. South wind around 2 mph. Chance of precipitation is 30%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 97°F | Chance Showers And Thunderstorms | 2 mph S | 26% |
| Tonight | 71°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 2 mph SE | 24% |
| Saturday | 97°F | Mostly Sunny | 2 to 7 mph SW | 6% |
| Saturday Night | 72°F | Partly Cloudy | 5 mph S | 0% |
| Sunday | 94°F | Mostly Sunny | 2 to 6 mph W | 13% |
| Sunday Night | 67°F | Mostly Cloudy then Chance Showers And Thunderstorms | 6 mph N | 45% |
| Monday | 82°F | Showers And Thunderstorms Likely | 5 to 9 mph N | 60% |
| Monday Night | 60°F | Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms | 6 to 10 mph N | 60% |
| Tuesday | 72°F | Slight Chance Rain Showers then Partly Sunny | 8 to 12 mph N | 21% |
| Tuesday Night | 54°F | Mostly Cloudy | 5 to 10 mph N | 7% |
| Wednesday | 75°F | Mostly Sunny | 8 mph N | 3% |
| Wednesday Night | 54°F | Partly Cloudy | 2 to 7 mph N | 2% |
| Thursday | 76°F | Mostly Sunny | 2 to 7 mph N | 1% |
| Thursday Night | 57°F | Partly Cloudy | 2 to 6 mph N | 2% |
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 Sep 19, 2026.