What is today's weather forecast for Carterville, IL?

Today's forecast for Carterville shows a low of 28 degrees Fahrenheit. A slight chance of freezing rain before 3am.

What is the 7-day weather forecast for Carterville, IL?

The 7-day forecast for Carterville shows highs from 31 to 50 degrees and lows from 19 to 33 degrees Fahrenheit. Expect precipitation on 4 days with chances of 20% or higher.

Will it rain in Carterville, IL this week?

Yes, rain is possible in Carterville this week. Precipitation chances: Wednesday (20% chance), Saturday (20% chance), Sunday (50% chance), Wednesday (50% chance).

How accurate is the Carterville weather forecast?

WeatherForYou provides highly accurate Carterville forecasts using National Weather Service data and current conditions from the nearest available weather stations, often miles closer than regional airports, for the most precise local forecasts.

Carterville, IL Weather Forecast and Current Conditions

Current Conditions From Nearby Local Station

Switch to Metric Units

29°F
Feels Like 29°F

Humidity 89% Dew Point 26°F Wind Calm Barometer 30.24 in.

Report from a MADIS/MESONET weather station 1.3 mi. ESE of central Carterville
at 1:45 AM Thu, Dec 4, 2025

Point Forecast at a Glance

WedDec 3

20%

ThuDec 4

FriDec 5

SatDec 6

SunDec 7

50%

MonDec 8

TueDec 9

7-Day Temperature Trend

Week Ahead Summary

Warming trend through the week with high temperatures climbing from 31°F to 46°F. Some precipitation possible with wintry mix on at least one day.

Climate Context

This week's forecast shows temperatures running 4°F below the historical average for December. Normal highs for this period are around 45°F with lows around 28°F.

This Date in Weather History

1982 - The temperature in New York City's Central Park reached 72 degrees to establish a record high for December. The month as a whole was also the warmest of record.

Carterville, IL 7 Day Weather Forecast Details

Wednesday Dec 3

Night: A slight chance of freezing rain before 3am. Mostly cloudy, with a steady temperature around 28. Calm wind becoming north 5 to 9 mph. Chance of precipitation is 20%.

Thursday Dec 4

Day: Mostly cloudy, with a high near 31. North northeast wind 5 to 10 mph.

Night: Partly cloudy, with a low around 19. Calm wind.

Friday Dec 5

Day: Sunny, with a high near 41. Calm wind becoming south southwest around 6 mph in the afternoon.

Night: Partly cloudy, with a low around 27. South wind around 5 mph becoming calm in the evening.

Saturday Dec 6

Day: Mostly sunny, with a high near 44. Light and variable wind.

Night: A slight chance of rain showers between midnight and 3am, then a slight chance of freezing rain after 3am. Mostly cloudy, with a low around 29. Calm wind becoming northeast around 5 mph after midnight. Chance of precipitation is 20%.

Sunday Dec 7

Day: A slight chance of showers before noon. Mostly cloudy, with a high near 39. North wind 5 to 9 mph.

Night: Mostly cloudy, with a low around 22. North wind 5 to 8 mph.

Monday Dec 8

Day: Mostly sunny, with a high near 36. North wind around 6 mph becoming light and variable in the afternoon.

Night: Partly cloudy, with a low around 24. Calm wind becoming south southwest 5 to 7 mph after midnight.

Tuesday Dec 9

Day: Mostly sunny, with a high near 46. Southwest wind 7 to 11 mph, with gusts as high as 18 mph.

Night: Mostly cloudy, with a low around 33. South southwest wind 7 to 10 mph.

Wednesday Dec 10

Day: A chance of showers. Mostly cloudy, with a high near 50. South southwest wind 9 to 13 mph, with gusts as high as 21 mph.

About Carterville, IL

Carterville is a city in Williamson County, Illinois, United States. At the 2020 census, the city's population was 5,848. The city is part of the Carbondale-Marion-Herrin combined statistical area and has grown considerably as a residential community of Carbondale and Marion. The city is located next to Crab Orchard National Wildlife Refuge. The Refuge's 44,000 acres (180 km2) of land and water contain a wide diversity of flora and fauna.

Content from Wikipedia, licensed under CC BY-SA 3.0.

How We Provide Better Local Weather

Current conditions: We use the nearest available station to your location - including professional MESONET/MADIS and local weather stations - often miles closer than regional airports.

Forecasts: National Weather Service point forecasts predict for your specific area, not broad regional zones, making them far more relevant to your location.

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