Carlinville, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Carlinville, a city in Macoupin County, Illinois.
Overnight
53°F
Slight Chance Light Rain
A slight chance of rain. Mostly cloudy, with a low around 53. Southwest wind 9 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 20%.
7-day forecast for Carlinville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 53°F | Slight Chance Light Rain | 9 to 13 mph SW | 24% |
| Wednesday | 61°F | Slight Chance Drizzle then Mostly Cloudy | 8 to 14 mph SW | 12% |
| Wednesday Night | 40°F | Partly Cloudy | 7 mph SW | 1% |
| Thursday | 61°F | Mostly Sunny | 6 to 10 mph W | 0% |
| Thursday Night | 41°F | Mostly Cloudy | 5 mph NW | 1% |
| Friday | 55°F | Partly Sunny | 6 to 9 mph N | 4% |
| Friday Night | 30°F | Partly Cloudy | 1 to 6 mph N | 0% |
| Saturday | 54°F | Mostly Sunny | 3 mph NW | 0% |
| Saturday Night | 30°F | Partly Cloudy | 1 mph NW | 0% |
| Sunday | 59°F | Sunny | 1 to 6 mph W | 1% |
| Sunday Night | 31°F | Clear | 2 mph W | 0% |
| Monday | 64°F | Sunny | 0 to 6 mph SW | 0% |
| Monday Night | 36°F | Clear | 3 mph SW | 0% |
| Tuesday | 67°F | Sunny | 3 mph W | 1% |
Forecast source: National Weather Service (api.weather.gov) for Carlinville (39.277, -89.876). Updated through the day.
Growing snapshot for Carlinville
Last spring frost
Apr 14
First fall frost
Oct 21
Growing season
188 days
Hardiness zone
6b
More local growing data for Carlinville: nearby ZIP 62626 weather · frost dates · planting calendar · Illinois frost dates
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Climate data from the nearest NOAA station, Carlinville, Il (0.8 mi from Carlinville). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.