Winslow, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Winslow, a village in Stephenson County, Illinois.
Today
83°F
Partly Sunny then Chance Showers And Thunderstorms
A chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 83. Southwest wind around 10 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Winslow
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 83°F | Partly Sunny then Chance Showers And Thunderstorms | 10 mph SW | 29% |
| Tonight | 64°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 5 mph W | 85% |
| Wednesday | 75°F | Showers And Thunderstorms Likely | 0 to 5 mph N | 70% |
| Wednesday Night | 58°F | Chance Showers And Thunderstorms | 0 to 5 mph NW | 50% |
| Thursday | 78°F | Slight Chance Rain Showers then Mostly Sunny | 0 mph | 21% |
| Thursday Night | 58°F | Mostly Clear | 0 mph | 5% |
| Friday | 80°F | Mostly Sunny | 0 to 5 mph S | 5% |
| Friday Night | 62°F | Mostly Clear | 5 mph S | 6% |
| Saturday | 83°F | Mostly Sunny | 5 to 10 mph SW | 11% |
| Saturday Night | 68°F | Chance Showers And Thunderstorms | 5 to 10 mph S | 25% |
| Sunday | 84°F | Chance Showers And Thunderstorms | 10 to 15 mph SW | 25% |
| Sunday Night | 67°F | Chance Showers And Thunderstorms | 5 to 10 mph S | 43% |
| Monday | 83°F | Chance Showers And Thunderstorms | 5 to 10 mph S | 41% |
| Monday Night | 67°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 5 to 10 mph W | 41% |
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
Nearby towns & communities
Adeline
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Ridott
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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 Aug 4, 2026.