Marseilles, IL Weather & Growing Conditions
This Afternoon
70°F
Rain Showers Likely
Rain showers likely. Mostly cloudy. High near 70, with temperatures falling to around 67 in the afternoon. South wind around 15 mph, with gusts as high as 35 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 70°F | Rain Showers Likely | 15 mph S | 62% |
| Tonight | 58°F | Rain Showers | 15 mph S | 91% |
| Wednesday | 61°F | Chance Rain Showers then Mostly Cloudy | 15 mph SSW | 41% |
| Wednesday Night | 48°F | Mostly Cloudy | 15 mph SW | 11% |
| Thursday | 58°F | Mostly Cloudy then Chance Rain Showers | 10 to 15 mph WSW | 32% |
| Thursday Night | 44°F | Chance Rain Showers | 5 mph NW | 35% |
| Friday | 53°F | Slight Chance Rain Showers | 10 mph N | 23% |
| Friday Night | 37°F | Partly Cloudy | 0 to 5 mph NNW | 3% |
| Saturday | 52°F | Mostly Sunny | 0 to 5 mph WNW | 4% |
| Saturday Night | 36°F | Partly Cloudy | 0 to 5 mph WSW | 3% |
| Sunday | 58°F | Sunny | 5 to 10 mph W | 13% |
| Sunday Night | 37°F | Mostly Clear | 0 to 5 mph WNW | 6% |
| Monday | 62°F | Sunny | 5 to 10 mph WSW | 3% |
| Monday Night | 41°F | Mostly Clear | 5 mph WSW | 1% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Marseilles, IL
Last spring frost
Apr 27
First fall frost
Oct 17
Growing season
171 days
Hardiness zone
5b
Explore more for Marseilles, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Marseilles Lock, Il (3.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.