Cissna Park, IL Weather & Growing Conditions
Today
83°F
Mostly Sunny
Mostly sunny, with a high near 83. South southwest wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 83°F | Mostly Sunny | 5 mph SSW | 0% |
| Tonight | 63°F | Mostly Clear | 5 mph S | 0% |
| Wednesday | 84°F | Mostly Sunny | 0 to 5 mph SSW | 14% |
| Wednesday Night | 66°F | Chance Showers And Thunderstorms | 0 to 5 mph S | 76% |
| Thursday | 81°F | Showers And Thunderstorms | 0 to 5 mph SSW | 76% |
| Thursday Night | 64°F | Chance Showers And Thunderstorms | 0 mph | 50% |
| Friday | 82°F | Partly Sunny then Slight Chance Showers And Thunderstorms | 0 mph | 16% |
| Friday Night | 65°F | Slight Chance Showers And Thunderstorms | 0 mph | 24% |
| Saturday | 84°F | Slight Chance Rain Showers then Mostly Sunny | 0 to 5 mph SSW | 15% |
| Saturday Night | 69°F | Mostly Clear | 0 to 5 mph SSW | 10% |
| Sunday | 87°F | Mostly Sunny | 5 to 10 mph SSW | 10% |
| Sunday Night | 70°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 5 mph SSW | 18% |
| Monday | 87°F | Slight Chance Showers And Thunderstorms | 5 to 10 mph SSW | 22% |
| Monday Night | 70°F | Chance Showers And Thunderstorms | 5 mph SW | 34% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Cissna Park, IL
Last spring frost
Apr 22
First fall frost
Oct 19
Growing season
180 days
Hardiness zone
6a
Explore more for Cissna Park, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Hoopeston, Il (9.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.