Carlinville, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Carlinville, a city in Macoupin County, Illinois.
This Afternoon
93°F
Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms. Sunny, with a high near 93. Heat index values as high as 101. East wind around 3 mph. Chance of precipitation is 20%.
7-day forecast for Carlinville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 93°F | Slight Chance Showers And Thunderstorms | 3 mph E | 24% |
| Tonight | 69°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 6 mph SE | 22% |
| Saturday | 96°F | Mostly Sunny | 7 mph SW | 7% |
| Saturday Night | 69°F | Partly Cloudy | 3 mph SW | 11% |
| Sunday | 90°F | Chance Rain Showers then Chance Showers And Thunderstorms | 1 to 6 mph NW | 37% |
| Sunday Night | 61°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 5 to 8 mph NE | 63% |
| Monday | 76°F | Showers And Thunderstorms Likely | 6 to 10 mph NE | 63% |
| Monday Night | 55°F | Chance Showers And Thunderstorms | 6 to 12 mph NE | 53% |
| Tuesday | 70°F | Slight Chance Rain Showers then Mostly Cloudy | 10 mph NE | 22% |
| Tuesday Night | 50°F | Mostly Cloudy | 3 to 10 mph N | 4% |
| Wednesday | 73°F | Mostly Sunny | 5 to 8 mph N | 2% |
| Wednesday Night | 51°F | Partly Cloudy | 1 to 7 mph N | 1% |
| Thursday | 75°F | Mostly Sunny | 2 to 6 mph N | 4% |
| Thursday Night | 54°F | Partly Cloudy | 5 mph NE | 4% |
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 Sep 18, 2026.