Warsaw, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Warsaw, a city in Lee County, Illinois.
Today
91°F
Sunny
Sunny, with a high near 91. South wind 5 to 10 mph.
7-day forecast for Warsaw
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 91°F | Sunny | 5 to 10 mph S | 1% |
| Tonight | 70°F | Slight Chance Showers And Thunderstorms | 5 mph SE | 21% |
| Wednesday | 86°F | Chance Showers And Thunderstorms | 5 mph S | 65% |
| Wednesday Night | 66°F | Showers And Thunderstorms | 5 mph N | 83% |
| Thursday | 84°F | Showers And Thunderstorms | 5 mph NE | 80% |
| Thursday Night | 66°F | Partly Cloudy | 0 to 5 mph E | 10% |
| Friday | 87°F | Mostly Sunny | 0 to 5 mph S | 7% |
| Friday Night | 68°F | Slight Chance Showers And Thunderstorms | 0 to 5 mph S | 21% |
| Saturday | 90°F | Slight Chance Showers And Thunderstorms then Sunny | 5 mph S | 21% |
| Saturday Night | 72°F | Mostly Clear | 5 to 10 mph S | 6% |
| Sunday | 92°F | Sunny | 10 mph SW | 6% |
| Sunday Night | 73°F | Mostly Clear then Slight Chance Showers And Thunderstorms | 5 to 10 mph S | 18% |
| Monday | 93°F | Slight Chance Showers And Thunderstorms then Mostly Sunny | 5 to 10 mph S | 18% |
| Monday Night | 73°F | Chance Showers And Thunderstorms | 5 to 10 mph S | 26% |
Forecast source: National Weather Service (api.weather.gov) for Warsaw (40.351, -91.428). Updated through the day.
Growing snapshot for Warsaw
Last spring frost
Apr 10
First fall frost
Oct 27
Growing season
198 days
Hardiness zone
6a
More local growing data for Warsaw: nearby ZIP 52632 weather · frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Keokuk Lock Dam 19, Ia (4.4 mi from Warsaw). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.