Lenzburg, IL Weather & Growing Conditions
Today
87°F
Sunny
Sunny, with a high near 87. Southeast wind around 3 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 87°F | Sunny | 3 mph SE | 0% |
| Tonight | 66°F | Mostly Clear | 1 to 5 mph SE | 0% |
| Wednesday | 90°F | Sunny | 1 to 5 mph S | 3% |
| Wednesday Night | 70°F | Partly Cloudy then Chance Showers And Thunderstorms | 5 mph S | 49% |
| Thursday | 87°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 5 mph S | 67% |
| Thursday Night | 70°F | Chance Showers And Thunderstorms | 2 mph S | 53% |
| Friday | 87°F | Chance Showers And Thunderstorms | 2 mph SW | 53% |
| Friday Night | 70°F | Chance Showers And Thunderstorms | 1 mph S | 40% |
| Saturday | 89°F | Chance Showers And Thunderstorms | 3 mph S | 40% |
| Saturday Night | 71°F | Partly Cloudy | 5 mph S | 10% |
| Sunday | 91°F | Sunny | 3 to 7 mph S | 7% |
| Sunday Night | 73°F | Mostly Clear | 5 to 8 mph S | 5% |
| Monday | 93°F | Sunny | 5 to 8 mph S | 5% |
| Monday Night | 74°F | Partly Cloudy | 8 mph S | 11% |
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 Aug 4, 2026.