Marissa, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Marissa, a village in St. Clair County, Illinois.
Overnight
55°F
Chance Light Rain
A chance of rain before 3am, then a slight chance of drizzle. Mostly cloudy, with a low around 55. Southwest wind 7 to 12 mph, with gusts as high as 23 mph. Chance of precipitation is 30%.
7-day forecast for Marissa
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 55°F | Chance Light Rain | 7 to 12 mph SW | 34% |
| Wednesday | 65°F | Mostly Cloudy | 5 to 10 mph W | 9% |
| Wednesday Night | 43°F | Mostly Clear | 5 mph W | 0% |
| Thursday | 67°F | Sunny | 3 to 8 mph W | 0% |
| Thursday Night | 45°F | Mostly Cloudy | 3 mph NW | 1% |
| Friday | 58°F | Partly Sunny | 5 to 10 mph NW | 1% |
| Friday Night | 36°F | Partly Cloudy | 2 to 6 mph N | 0% |
| Saturday | 56°F | Mostly Sunny | 1 to 5 mph N | 0% |
| Saturday Night | 34°F | Partly Cloudy | 1 mph NW | 0% |
| Sunday | 61°F | Sunny | 1 to 5 mph NW | 1% |
| Sunday Night | 35°F | Clear | 0 mph | 0% |
| Monday | 66°F | Sunny | 0 to 3 mph SW | 0% |
| Monday Night | 40°F | Clear | 2 mph SW | 0% |
| Tuesday | 69°F | Sunny | 3 mph W | 1% |
Forecast source: National Weather Service (api.weather.gov) for Marissa (38.250, -89.771). Updated through the day.
Growing snapshot for Marissa
Last spring frost
Apr 12
First fall frost
Oct 22
Growing season
191 days
Hardiness zone
7a
More local growing data for Marissa: nearby ZIP 62257 weather · frost dates · planting calendar · Illinois frost dates
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Climate data from the nearest NOAA station, Sparta 1 W, Il (11.6 mi from Marissa). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.