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
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| 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.