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Pontoosuc, IL Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Pontoosuc, a village in Hancock County, Illinois.

Tonight
74°F
Partly Cloudy then Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms after 5am. Partly cloudy, with a low around 74. Southeast wind 5 to 10 mph. Chance of precipitation is 20%.

7-day forecast for Pontoosuc

WhenTempForecastWindPrecip
Tonight 74°F Partly Cloudy then Slight Chance Showers And Thunderstorms 5 to 10 mph SE 22%
Saturday 87°F Partly Sunny 5 to 10 mph S 13%
Saturday Night 71°F Chance Showers And Thunderstorms then Showers And Thunderstorms Likely 5 mph NW 71%
Sunday 77°F Rain Showers Likely 5 to 10 mph N 71%
Sunday Night 62°F Showers And Thunderstorms Likely 10 to 15 mph NE 68%
Monday 66°F Showers And Thunderstorms Likely 10 to 15 mph NE 63%
Monday Night 57°F Chance Rain Showers 10 mph NE 50%
Tuesday 64°F Chance Rain Showers 10 mph NE 29%
Tuesday Night 54°F Mostly Cloudy 5 to 10 mph NE 6%
Wednesday 67°F Mostly Sunny 5 mph NE 1%
Wednesday Night 58°F Partly Cloudy 0 to 5 mph NE 1%
Thursday 70°F Partly Sunny 5 mph NE 5%
Thursday Night 60°F Partly Cloudy 0 to 5 mph NE 5%
Friday 72°F Mostly Sunny 0 to 5 mph NE 6%

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

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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.