Marseilles, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Marseilles, a city in Lasalle County, Illinois.
This Afternoon
76°F
Chance Rain Showers
A chance of rain showers. Partly sunny, with a high near 76. East wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Marseilles
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 76°F | Chance Rain Showers | 10 mph E | 25% |
| Tonight | 66°F | Mostly Cloudy then Chance Showers And Thunderstorms | 10 mph ESE | 26% |
| Saturday | 84°F | Showers And Thunderstorms Likely | 5 to 10 mph SE | 63% |
| Saturday Night | 67°F | Showers And Thunderstorms Likely | 5 mph WNW | 79% |
| Sunday | 72°F | Showers And Thunderstorms | 5 to 15 mph NNE | 79% |
| Sunday Night | 58°F | Showers And Thunderstorms Likely | 10 to 15 mph NE | 72% |
| Monday | 67°F | Showers And Thunderstorms Likely | 15 mph ENE | 62% |
| Monday Night | 54°F | Chance Rain Showers | 10 to 15 mph NE | 34% |
| Tuesday | 65°F | Chance Rain Showers | 10 mph NE | 25% |
| Tuesday Night | 54°F | Mostly Cloudy | 5 to 10 mph NNE | 9% |
| Wednesday | 69°F | Partly Sunny | 5 to 10 mph NNE | 6% |
| Wednesday Night | 54°F | Partly Cloudy | 5 to 10 mph NNE | 5% |
| Thursday | 70°F | Mostly Sunny | 5 mph N | 2% |
| Thursday Night | 56°F | Partly Cloudy | 0 to 5 mph NNE | 3% |
Forecast source: National Weather Service (api.weather.gov) for Marseilles (41.282, -88.681). Updated through the day.
Growing snapshot for Marseilles
Last spring frost
Apr 27
First fall frost
Oct 17
Growing season
171 days
Hardiness zone
5b
More local growing data for Marseilles: nearby ZIP 61341 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Cedar Point
Dana
Dayton
Earlville
Grand Ridge
Harding
Kangley
LaSalle
Leland
Leonore
Lostant
Mendota
Millington
Naplate
Newark
North Utica
Oglesby
Ottawa
Peru
Ransom
Rutland
Seneca
Serena
Sheridan
Streator
Tonica
Triumph
Troy Grove
Wedron
Wenona
Climate data from the nearest NOAA station, Marseilles Lock, Il (3.5 mi from Marseilles). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.