Winslow, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Winslow, a village in Stephenson County, Illinois.
Tonight
54°F
Rain Showers
Rain showers. Mostly cloudy, with a low around 54. South wind 10 to 15 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Winslow
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 54°F | Rain Showers | 10 to 15 mph S | 87% |
| Wednesday | 58°F | Chance Rain Showers | 10 to 15 mph SW | 45% |
| Wednesday Night | 45°F | Chance Rain Showers | 10 to 15 mph SW | 29% |
| Thursday | 54°F | Rain Showers Likely | 10 to 15 mph W | 70% |
| Thursday Night | 38°F | Mostly Cloudy | 10 mph N | 12% |
| Friday | 49°F | Partly Sunny | 5 to 10 mph N | 3% |
| Friday Night | 29°F | Mostly Clear | 0 to 5 mph N | 0% |
| Saturday | 51°F | Sunny | 0 to 5 mph NW | 0% |
| Saturday Night | 32°F | Mostly Clear | 5 mph W | 2% |
| Sunday | 55°F | Sunny | 5 to 10 mph W | 6% |
| Sunday Night | 33°F | Mostly Clear | 0 to 5 mph W | 0% |
| Monday | 60°F | Sunny | 0 to 10 mph SW | 0% |
| Monday Night | 38°F | Mostly Clear | 5 mph W | 0% |
| Tuesday | 61°F | Sunny | 5 mph NW | 0% |
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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Ridott
Rock City
Willow Lake
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 4, 2026.