Marissa, IL Weather & Growing Conditions
Overnight
72°F
Clear
Clear, with a low around 72. Southeast wind around 6 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 72°F | Clear | 6 mph SE | 3% |
| Saturday | 97°F | Mostly Sunny | 3 to 7 mph SW | 3% |
| Saturday Night | 71°F | Partly Cloudy | 5 mph S | 3% |
| Sunday | 94°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 5 mph W | 19% |
| Sunday Night | 66°F | Slight Chance Showers And Thunderstorms | 7 mph N | 52% |
| Monday | 80°F | Showers And Thunderstorms Likely | 5 to 10 mph N | 63% |
| Monday Night | 58°F | Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms | 5 to 10 mph N | 63% |
| Tuesday | 72°F | Slight Chance Showers And Thunderstorms then Partly Sunny | 8 to 12 mph N | 24% |
| Tuesday Night | 53°F | Mostly Cloudy | 5 to 12 mph N | 7% |
| Wednesday | 74°F | Mostly Sunny | 7 to 10 mph N | 2% |
| Wednesday Night | 53°F | Partly Cloudy | 2 to 7 mph N | 0% |
| Thursday | 76°F | Mostly Sunny | 3 to 7 mph N | 1% |
| Thursday Night | 56°F | Partly Cloudy | 2 to 6 mph NE | 4% |
| Friday | 77°F | Mostly Sunny | 2 to 8 mph NE | 4% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Marissa, IL
Last spring frost
Apr 12
First fall frost
Oct 22
Growing season
191 days
Hardiness zone
7a
Explore more for Marissa, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Sparta 1 W, Il (11.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.