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Shiloh, IL Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Shiloh, a village in St. Clair County, Illinois.

Today
97°F
Mostly Sunny
Mostly sunny, with a high near 97. Heat index values as high as 101. Southwest wind 3 to 8 mph.

7-day forecast for Shiloh

WhenTempForecastWindPrecip
Today 97°F Mostly Sunny 3 to 8 mph SW 4%
Tonight 73°F Partly Cloudy 5 mph S 4%
Sunday 93°F Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms 3 to 7 mph W 23%
Sunday Night 68°F Slight Chance Showers And Thunderstorms then Showers And Thunderstorms Likely 6 to 9 mph N 57%
Monday 79°F Showers And Thunderstorms Likely 7 to 12 mph NE 64%
Monday Night 60°F Showers And Thunderstorms Likely 7 to 13 mph N 55%
Tuesday 72°F Slight Chance Rain Showers then Partly Sunny 9 to 13 mph N 20%
Tuesday Night 55°F Mostly Cloudy 6 to 13 mph N 6%
Wednesday 74°F Mostly Sunny 7 to 10 mph N 1%
Wednesday Night 55°F Partly Cloudy 2 to 9 mph N 0%
Thursday 76°F Mostly Sunny 3 to 8 mph N 1%
Thursday Night 57°F Partly Cloudy 2 to 8 mph NE 3%
Friday 78°F Partly Sunny 3 to 8 mph NE 5%
Friday Night 58°F Partly Cloudy 3 to 7 mph NE 5%

Forecast source: National Weather Service (api.weather.gov) for Shiloh (38.552, -89.915). Updated through the day.

Growing snapshot for Shiloh

Last spring frost
Apr 12
First fall frost
Oct 20
Growing season
189 days
Hardiness zone
7a

More local growing data for Shiloh: nearby ZIP 62221 weather · frost dates · planting calendar · Illinois frost dates

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Climate data from the nearest NOAA station, Belleville Siu Rsch, Il (3.1 mi from Shiloh). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.