Tremont, IL Weather & Growing Conditions
This Afternoon
81°F
Chance Rain Showers
A chance of rain showers before 4pm. Partly sunny, with a high near 81. East wind around 9 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 81°F | Chance Rain Showers | 9 mph E | 41% |
| Tonight | 69°F | Partly Cloudy | 10 mph ESE | 5% |
| Saturday | 87°F | Slight Chance Showers And Thunderstorms then Mostly Cloudy | 9 mph S | 21% |
| Saturday Night | 68°F | Chance Showers And Thunderstorms | 7 mph ESE | 51% |
| Sunday | 78°F | Rain Showers Likely | 3 to 14 mph NNE | 66% |
| Sunday Night | 59°F | Showers And Thunderstorms Likely | 12 to 15 mph NE | 67% |
| Monday | 67°F | Showers And Thunderstorms Likely | 14 mph ENE | 67% |
| Monday Night | 54°F | Chance Showers And Thunderstorms | 12 to 16 mph NE | 46% |
| Tuesday | 65°F | Chance Rain Showers then Mostly Cloudy | 14 mph NE | 28% |
| Tuesday Night | 51°F | Mostly Cloudy | 6 to 13 mph NNE | 6% |
| Wednesday | 69°F | Mostly Sunny | 9 mph NNE | 4% |
| Wednesday Night | 52°F | Partly Cloudy | 3 to 8 mph NNE | 2% |
| Thursday | 70°F | Mostly Sunny | 3 to 7 mph NNE | 2% |
| Thursday Night | 54°F | Partly Cloudy | 2 to 6 mph NE | 3% |
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 Sep 18, 2026.