Watseka, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Watseka, a city in Iroquois County, Illinois.
Today
83°F
Mostly Sunny
Mostly sunny, with a high near 83. South southwest wind around 5 mph, with gusts as high as 10 mph.
7-day forecast for Watseka
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 83°F | Mostly Sunny | 5 mph SSW | 0% |
| Tonight | 62°F | Partly Cloudy | 5 mph S | 0% |
| Wednesday | 83°F | Partly Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph SSW | 18% |
| Wednesday Night | 65°F | Chance Showers And Thunderstorms | 0 mph | 81% |
| Thursday | 80°F | Showers And Thunderstorms | 0 mph | 81% |
| Thursday Night | 63°F | Chance Showers And Thunderstorms | 0 mph | 53% |
| Friday | 82°F | Partly Sunny | 0 mph | 11% |
| Friday Night | 64°F | Slight Chance Showers And Thunderstorms | 0 mph | 20% |
| Saturday | 84°F | Mostly Sunny | 0 to 5 mph SSW | 13% |
| Saturday Night | 68°F | Mostly Clear | 0 to 5 mph SSW | 10% |
| Sunday | 86°F | Mostly Sunny | 5 to 10 mph SSW | 10% |
| Sunday Night | 70°F | Slight Chance Showers And Thunderstorms | 5 mph SSW | 21% |
| Monday | 86°F | Slight Chance Showers And Thunderstorms | 5 mph SSW | 23% |
| Monday Night | 69°F | Chance Showers And Thunderstorms | 5 mph SW | 37% |
Forecast source: National Weather Service (api.weather.gov) for Watseka (40.775, -87.730). Updated through the day.
Growing snapshot for Watseka
Last spring frost
Apr 24
First fall frost
Oct 16
Growing season
174 days
Hardiness zone
5b
More local growing data for Watseka: nearby ZIP 60970 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Ashkum
Beaverville
Buckley
Cissna Park
Clifton
Crescent City
Danforth
Donovan
Gilman
Iroquois
Loda
Martinton
Milford
Onarga
Papineau
Sheldon
Thawville
Wellington
Woodland
Climate data from the nearest NOAA station, Watseka 2 Nw, Il (0.7 mi from Watseka). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.