Winslow, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Winslow, a village in Stephenson County, Illinois.
This Afternoon
59°F
Slight Chance Rain Showers
A slight chance of rain showers. Cloudy, with a high near 59. Southwest wind 10 to 15 mph. Chance of precipitation is 20%.
7-day forecast for Winslow
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 59°F | Slight Chance Rain Showers | 10 to 15 mph SW | 18% |
| Tonight | 46°F | Chance Rain Showers | 10 mph SW | 33% |
| Thursday | 51°F | Chance Rain Showers | 10 mph W | 41% |
| Thursday Night | 35°F | Slight Chance Rain Showers then Mostly Cloudy | 10 mph N | 16% |
| Friday | 48°F | Mostly Sunny | 5 to 10 mph N | 0% |
| Friday Night | 27°F | Mostly Clear | 0 to 5 mph N | 0% |
| Saturday | 52°F | Sunny | 0 to 5 mph NW | 0% |
| Saturday Night | 31°F | Mostly Clear | 5 mph W | 0% |
| Sunday | 58°F | Sunny | 5 to 10 mph W | 1% |
| Sunday Night | 33°F | Clear | 5 mph W | 0% |
| Monday | 61°F | Sunny | 5 to 10 mph SW | 0% |
| Monday Night | 38°F | Clear | 5 to 10 mph W | 0% |
| Tuesday | 61°F | Sunny | 5 mph NW | 1% |
| Tuesday Night | 36°F | Partly Cloudy | 0 to 5 mph NW | 2% |
Forecast source: National Weather Service (api.weather.gov) for Winslow (42.493, -89.795). Updated through the day.
Growing snapshot for Winslow
Last spring frost
Apr 27
First fall frost
Oct 9
Growing season
165 days
Hardiness zone
5a
More local growing data for Winslow: nearby ZIP 61089 weather · frost dates · planting calendar · Illinois frost dates
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Climate data from the nearest NOAA station, Stockton 3 Nne, Il (9.9 mi from Winslow). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 5, 2026.