Pontoosuc, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Pontoosuc, a village in Hancock County, Illinois.
This Afternoon
85°F
Mostly Cloudy
Mostly cloudy, with a high near 85. Southwest wind 5 to 10 mph.
7-day forecast for Pontoosuc
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 85°F | Mostly Cloudy | 5 to 10 mph SW | 12% |
| Tonight | 71°F | Chance Showers And Thunderstorms | 5 mph NE | 62% |
| Sunday | 75°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 5 to 10 mph N | 72% |
| Sunday Night | 62°F | Chance Showers And Thunderstorms | 10 to 15 mph NE | 68% |
| Monday | 65°F | Showers And Thunderstorms Likely | 10 to 15 mph NE | 72% |
| Monday Night | 58°F | Rain Showers Likely | 10 mph NE | 72% |
| Tuesday | 64°F | Chance Rain Showers | 10 mph NE | 40% |
| Tuesday Night | 54°F | Mostly Cloudy | 5 to 10 mph NE | 3% |
| Wednesday | 66°F | Partly Sunny | 5 mph NE | 1% |
| Wednesday Night | 57°F | Partly Cloudy | 0 to 5 mph NE | 1% |
| Thursday | 70°F | Partly Sunny | 0 to 5 mph NE | 3% |
| Thursday Night | 62°F | Slight Chance Rain Showers | 0 to 5 mph NE | 16% |
| Friday | 74°F | Slight Chance Rain Showers | 0 to 5 mph NE | 16% |
| Friday Night | 62°F | Partly Cloudy | 0 to 5 mph NE | 7% |
Forecast source: National Weather Service (api.weather.gov) for Pontoosuc (40.629, -91.211). Updated through the day.
Growing snapshot for Pontoosuc
Last spring frost
Apr 12
First fall frost
Oct 25
Growing season
194 days
Hardiness zone
6a
More local growing data for Pontoosuc: nearby ZIP 62358 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Augusta
Basco
Bentley
Bowen
Carthage
Dallas City
Elvaston
Ferris
Hamilton
La Harpe
Nauvoo
Niota
Plymouth
West Point
Climate data from the nearest NOAA station, Ft Madison, Ia (4.4 mi from Pontoosuc). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.