Wenona, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Wenona, a city in Lasalle County, Illinois.
Today
85°F
Mostly Sunny
Mostly sunny, with a high near 85. South southwest wind around 7 mph.
7-day forecast for Wenona
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 85°F | Mostly Sunny | 7 mph SSW | 0% |
| Tonight | 67°F | Partly Cloudy | 6 mph S | 8% |
| Wednesday | 82°F | Chance Showers And Thunderstorms | 3 to 7 mph SW | 55% |
| Wednesday Night | 66°F | Showers And Thunderstorms | 2 to 6 mph WSW | 89% |
| Thursday | 80°F | Chance Showers And Thunderstorms | 5 mph S | 75% |
| Thursday Night | 64°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 3 mph SSE | 24% |
| Friday | 83°F | Mostly Sunny | 2 mph S | 12% |
| Friday Night | 65°F | Slight Chance Showers And Thunderstorms | 3 mph SSW | 16% |
| Saturday | 85°F | Mostly Sunny | 6 mph SSW | 9% |
| Saturday Night | 71°F | Mostly Clear | 3 to 9 mph SSW | 9% |
| Sunday | 88°F | Sunny | 12 mph SSW | 10% |
| Sunday Night | 71°F | Slight Chance Showers And Thunderstorms | 10 mph SSW | 23% |
| Monday | 87°F | Slight Chance Showers And Thunderstorms | 10 mph SSW | 23% |
| Monday Night | 71°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 10 mph SW | 35% |
Forecast source: National Weather Service (api.weather.gov) for Wenona (41.049, -89.052). Updated through the day.
Growing snapshot for Wenona
Last spring frost
Apr 26
First fall frost
Oct 17
Growing season
173 days
Hardiness zone
5b
More local growing data for Wenona: nearby ZIP 61377 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Cedar Point
Dana
Dayton
Earlville
Grand Ridge
Harding
Kangley
LaSalle
Leland
Leonore
Lostant
Marseilles
Mendota
Millington
Naplate
Newark
North Utica
Oglesby
Ottawa
Peru
Ransom
Rutland
Seneca
Serena
Sheridan
Streator
Tonica
Triumph
Troy Grove
Wedron
Climate data from the nearest NOAA station, Minonk, Il (10.6 mi from Wenona). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.