Cissna Park, IL Weather & Growing Conditions
Today
84°F
Showers And Thunderstorms Likely
A chance of showers and thunderstorms before 9am, then showers and thunderstorms between 9am and 11am, then showers and thunderstorms likely between 11am and 3pm. Mostly cloudy, with a high near 84. East southeast wind around 5 mph, with gusts as high as 10 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 84°F | Showers And Thunderstorms Likely | 5 mph ESE | 77% |
| Tonight | 67°F | Chance Showers And Thunderstorms | 0 to 5 mph SSW | 45% |
| Sunday | 76°F | Chance Showers And Thunderstorms then Showers And Thunderstorms | 0 to 10 mph N | 82% |
| Sunday Night | 57°F | Chance Showers And Thunderstorms | 10 mph NE | 54% |
| Monday | 67°F | Showers And Thunderstorms Likely | 10 mph ENE | 61% |
| Monday Night | 52°F | Chance Rain Showers | 5 to 10 mph NE | 48% |
| Tuesday | 66°F | Chance Rain Showers | 10 mph NE | 37% |
| Tuesday Night | 51°F | Chance Showers And Thunderstorms then Mostly Cloudy | 5 to 10 mph NNE | 37% |
| Wednesday | 68°F | Partly Sunny | 5 to 10 mph NNE | 7% |
| Wednesday Night | 52°F | Mostly Cloudy | 5 mph NNE | 4% |
| Thursday | 70°F | Partly Sunny | 5 mph NNE | 2% |
| Thursday Night | 53°F | Partly Cloudy | 0 to 5 mph NNE | 2% |
| Friday | 73°F | Mostly Sunny | 0 to 5 mph NNE | 2% |
| Friday Night | 51°F | Partly Cloudy | 0 to 5 mph NE | 2% |
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 Sep 19, 2026.