Tremont, IL Weather & Growing Conditions
This Afternoon
70°F
Light Rain
Rain and a slight chance of thunderstorms. Mostly cloudy, with a high near 70. South wind around 18 mph, with gusts as high as 30 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 |
|---|---|---|---|---|
| This Afternoon | 70°F | Light Rain | 18 mph S | 79% |
| Tonight | 53°F | Light Rain | 14 to 20 mph S | 82% |
| Wednesday | 60°F | Slight Chance Light Rain then Mostly Cloudy | 13 to 16 mph SW | 22% |
| Wednesday Night | 44°F | Mostly Cloudy | 12 mph SW | 3% |
| Thursday | 59°F | Partly Sunny | 9 to 14 mph WSW | 8% |
| Thursday Night | 42°F | Mostly Cloudy then Chance Light Rain | 3 to 8 mph NW | 27% |
| Friday | 55°F | Mostly Cloudy then Slight Chance Light Rain | 10 mph N | 17% |
| Friday Night | 35°F | Partly Cloudy | 1 to 8 mph NNW | 4% |
| Saturday | 53°F | Mostly Sunny | 1 to 5 mph WNW | 2% |
| Saturday Night | 33°F | Partly Cloudy | 2 mph W | 3% |
| Sunday | 60°F | Sunny | 2 to 9 mph W | 13% |
| Sunday Night | 34°F | Mostly Clear | 2 to 7 mph W | 5% |
| Monday | 64°F | Sunny | 2 to 12 mph SW | 2% |
| Monday Night | 39°F | Mostly Clear | 3 to 8 mph WSW | 1% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Tremont, IL
Last spring frost
Apr 21
First fall frost
Oct 17
Growing season
178 days
Hardiness zone
6a
Explore more for Tremont, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Congerville 2Nw, Il (14.7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.