Wenona, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Wenona, a city in Lasalle County, Illinois.
This Afternoon
71°F
Light Rain Likely
Rain likely and a slight chance of thunderstorms. Mostly cloudy. High near 71, with temperatures falling to around 66 in the afternoon. South wind around 16 mph, with gusts as high as 29 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Wenona
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 71°F | Light Rain Likely | 16 mph S | 63% |
| Tonight | 55°F | Light Rain | 13 to 16 mph S | 92% |
| Wednesday | 61°F | Chance Light Rain then Mostly Cloudy | 13 to 16 mph SW | 34% |
| Wednesday Night | 46°F | Mostly Cloudy | 12 mph SW | 9% |
| Thursday | 58°F | Mostly Cloudy | 8 to 14 mph WSW | 14% |
| Thursday Night | 43°F | Chance Light Rain | 7 mph NW | 30% |
| Friday | 54°F | Slight Chance Light Rain | 7 to 10 mph N | 21% |
| Friday Night | 35°F | Partly Cloudy | 1 to 7 mph NNW | 3% |
| Saturday | 53°F | Mostly Sunny | 1 to 5 mph WNW | 3% |
| Saturday Night | 35°F | Partly Cloudy | 3 mph WSW | 3% |
| Sunday | 58°F | Sunny | 3 to 8 mph W | 14% |
| Sunday Night | 35°F | Mostly Clear | 6 mph W | 6% |
| Monday | 63°F | Sunny | 3 to 10 mph SW | 3% |
| Monday Night | 40°F | Mostly Clear | 5 to 8 mph WSW | 2% |
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
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Newark
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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 Nov 4, 2026.