Fairview Heights, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Fairview Heights, a city in St. Clair County, Illinois.
Overnight
55°F
Slight Chance Light Rain
A slight chance of rain before 3am, then a slight chance of drizzle. Mostly cloudy, with a low around 55. Southwest wind around 9 mph. Chance of precipitation is 20%.
7-day forecast for Fairview Heights
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 55°F | Slight Chance Light Rain | 9 mph SW | 17% |
| Wednesday | 63°F | Slight Chance Drizzle then Mostly Cloudy | 7 to 13 mph W | 11% |
| Wednesday Night | 46°F | Partly Cloudy | 6 mph W | 0% |
| Thursday | 65°F | Sunny | 6 to 10 mph W | 0% |
| Thursday Night | 48°F | Mostly Cloudy | 6 mph NW | 2% |
| Friday | 57°F | Partly Sunny | 7 to 12 mph N | 1% |
| Friday Night | 38°F | Partly Cloudy | 2 to 8 mph N | 0% |
| Saturday | 55°F | Mostly Sunny | 5 mph N | 0% |
| Saturday Night | 36°F | Partly Cloudy | 2 mph NW | 0% |
| Sunday | 60°F | Sunny | 2 to 6 mph NW | 1% |
| Sunday Night | 38°F | Clear | 2 mph W | 0% |
| Monday | 65°F | Sunny | 1 to 5 mph SW | 0% |
| Monday Night | 43°F | Clear | 3 mph SW | 0% |
| Tuesday | 68°F | Sunny | 5 mph W | 1% |
Forecast source: National Weather Service (api.weather.gov) for Fairview Heights (38.595, -90.005). Updated through the day.
Growing snapshot for Fairview Heights
Last spring frost
Apr 8
First fall frost
Oct 26
Growing season
200 days
Hardiness zone
7a
More local growing data for Fairview Heights: nearby ZIP 62208 weather · frost dates · planting calendar · Illinois frost dates
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Climate data from the nearest NOAA station, Cahokia St Louis Ap, Il (8.4 mi from Fairview Heights). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.