Fairview Heights, IL Weather & Growing Conditions
Tonight
57°F
Rain
Rain before 3am, then a slight chance of drizzle. Cloudy, with a low around 57. South wind 7 to 15 mph, with gusts as high as 31 mph. Chance of precipitation is 90%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 57°F | Rain | 7 to 15 mph S | 89% |
| Wednesday | 64°F | Slight Chance Drizzle then Mostly Cloudy | 7 to 13 mph W | 11% |
| Wednesday Night | 46°F | Partly Cloudy | 6 mph SW | 0% |
| Thursday | 66°F | Sunny | 5 to 9 mph W | 1% |
| Thursday Night | 47°F | Mostly Cloudy | 6 mph NW | 8% |
| Friday | 58°F | Mostly Cloudy | 6 to 10 mph NW | 6% |
| Friday Night | 42°F | Partly Cloudy | 2 to 7 mph N | 1% |
| Saturday | 56°F | Partly Sunny | 5 mph NW | 0% |
| Saturday Night | 39°F | Partly Cloudy | 2 mph NW | 0% |
| Sunday | 62°F | Sunny | 2 to 7 mph W | 8% |
| Sunday Night | 39°F | Mostly Clear | 5 mph W | 5% |
| Monday | 66°F | Sunny | 3 to 7 mph SW | 2% |
| Monday Night | 43°F | Mostly Clear | 5 mph SW | 1% |
| Tuesday | 69°F | Sunny | 6 mph W | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Fairview Heights, IL
Last spring frost
Apr 8
First fall frost
Oct 26
Growing season
200 days
Hardiness zone
7a
Explore more for Fairview Heights, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Cahokia St Louis Ap, Il (8.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.