Troy Grove, IL Weather & Growing Conditions
This Afternoon
74°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Partly sunny, with a high near 74. East wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 74°F | Chance Showers And Thunderstorms | 10 mph E | 52% |
| Tonight | 65°F | Mostly Cloudy then Chance Showers And Thunderstorms | 10 mph ESE | 31% |
| Saturday | 82°F | Showers And Thunderstorms Likely | 5 to 10 mph SE | 65% |
| Saturday Night | 65°F | Showers And Thunderstorms Likely | 5 mph NE | 79% |
| Sunday | 71°F | Showers And Thunderstorms | 10 to 15 mph NE | 79% |
| Sunday Night | 57°F | Showers And Thunderstorms Likely | 15 mph NE | 70% |
| Monday | 65°F | Showers And Thunderstorms Likely | 15 mph ENE | 60% |
| Monday Night | 52°F | Chance Rain Showers | 15 mph NE | 37% |
| Tuesday | 64°F | Chance Rain Showers | 15 mph NE | 30% |
| Tuesday Night | 51°F | Mostly Cloudy | 5 to 15 mph NNE | 7% |
| Wednesday | 67°F | Partly Sunny | 10 mph NNE | 5% |
| Wednesday Night | 52°F | Partly Cloudy | 5 to 10 mph NNE | 5% |
| Thursday | 69°F | Mostly Sunny | 5 mph NNE | 3% |
| Thursday Night | 53°F | Partly Cloudy | 5 mph NNE | 4% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Troy Grove, IL
Last spring frost
Apr 24
First fall frost
Oct 18
Growing season
176 days
Hardiness zone
5b
Explore more for Troy Grove, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Peru, Il (8.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.