Illinois · NWS PAH office

Carbondale, IL weather

It is 46°F and clear at Southern Illinois Airport as of Oct 28, 4:15 AM CDT. Overnight: Mostly Clear, low near 48°F, 1% chance of precipitation. Forecast from the National Weather Service, issued Oct 28, 1:25 AM CDT.

Updated Oct 28, 4:29 AM CDT (snapshot)

Current conditions

Temperature

46°F

Clear

Wind

Calm

Humidity 100% · dew point 46°F

Pressure · visibility

30.23 inHg

Visibility 9 mi

Observed at Southern Illinois Airport (KMDH), Oct 28, 4:15 AM CDT. Station readings can lag or be missing.

Alerts for this area

No active NWS alerts cover the Carbondale forecast zone right now.

Around the NWS PAH forecast area

No active alerts in zones served by the PAH office near Carbondale.

From the alert snapshot of Oct 28, 2026, 5:12 AM EDT. No alerts are active anywhere in Illinois.

For official warnings, check weather.gov and your local authorities. OpenForecast repeats National Weather Service alerts and may be delayed or incomplete. Follow instructions from emergency officials.

Next 24 hours

Hourly forecast for Carbondale (local time)
TimeTempForecastPrecip. chanceWind
Wed 6 AM49°FSunny1% 0 mph
Wed 7 AM48°FSunny1%S 1 mph
Wed 8 AM50°FSunny1%S 1 mph
Wed 9 AM55°FSunny1%S 2 mph
Wed 10 AM64°FSunny1%S 3 mph
Wed 11 AM69°FSunny1%S 5 mph
Wed 12 PM73°FSunny1%S 5 mph
Wed 1 PM75°FSunny1%S 6 mph
Wed 2 PM77°FSunny1%S 6 mph
Wed 3 PM77°FSunny1%S 6 mph
Wed 4 PM78°FSunny1%S 6 mph
Wed 5 PM76°FSunny1%S 5 mph
Wed 6 PM73°FClear1%SSE 3 mph
Wed 7 PM68°FClear1%SSE 2 mph
Wed 8 PM62°FClear1%SSE 2 mph
Wed 9 PM60°FClear1%SSE 2 mph
Wed 10 PM58°FClear1%S 2 mph
Wed 11 PM57°FClear1%S 2 mph
Thu 12 AM56°FClear1%S 2 mph
Thu 1 AM55°FClear1%S 2 mph
Thu 2 AM55°FClear1%S 3 mph
Thu 3 AM54°FMostly Clear1%S 3 mph
Thu 4 AM53°FClear1%S 3 mph
Thu 5 AM52°FClear1%S 3 mph

Hourly values come from the NWS gridded forecast for the 2.5 km grid square that covers the city's center point. Conditions elsewhere in Carbondale can differ.

7-day forecast

Overnight

Low 48°F

Mostly clear, with a low around 48. Wind around 0 mph.

Wednesday

High 78°F·Low 50°F

Sunny. High near 78, with temperatures falling to around 76 in the afternoon. South wind 0 to 6 mph.

Wednesday Night: Clear. Low around 50, with temperatures rising to around 52 overnight. South wind around 3 mph.

Thursday

High 80°F·Low 52°F

Sunny, with a high near 80. South southwest wind 5 to 8 mph.

Thursday Night: Mostly clear, with a low around 52. South wind 0 to 3 mph.

Friday

High 79°F·Low 56°F

Mostly sunny, with a high near 79. East southeast wind 0 to 3 mph.

Friday Night: Mostly cloudy, with a low around 56. East southeast wind around 2 mph.

Saturday

High 74°F·Low 56°F

Cloudy, with a high near 74. East southeast wind 1 to 5 mph.

Saturday Night: A chance of rain showers after 7pm. Cloudy, with a low around 56. Southeast wind around 3 mph.

Sunday

High 71°F·Low 54°F

A chance of rain showers. Cloudy, with a high near 71. South southeast wind 2 to 7 mph.

Sunday Night: A slight chance of rain showers after midnight. Mostly cloudy, with a low around 54. Southeast wind around 2 mph.

Monday

High 72°F·Low 57°F

A chance of rain showers. Mostly cloudy, with a high near 72. Southeast wind 1 to 7 mph.

Monday Night: A chance of rain showers. Mostly cloudy, with a low around 57. Southeast wind 5 to 9 mph.

Tuesday

High 72°F

A chance of rain showers. Mostly cloudy, with a high near 72. South southeast wind 9 to 14 mph, with gusts as high as 20 mph.

Nearby cities

Larger cities in the area

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About this forecast

Forecast office
Carbondale is served by the National Weather Service PAH forecast office, forecast zone ILZ084, county zone ILC077.
Location used
The Census Bureau's internal point for Carbondale (37.7221, -89.2237), in Jackson County. Population: 22,223 (2024 estimate), number 107 of the 121 Illinois cities on this site.
Radar
Nearest NWS radar: KPAH. View it on radar.weather.gov.

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Sources

  • Forecast, hourly forecast, observations and alerts: National Weather Service API, api.weather.gov/points/37.7221,-89.2237 (forecast issued Oct 28, 1:25 AM CDT).
  • Official forecast page: forecast.weather.gov.
  • City location and population: U.S. Census Bureau, Vintage 2024 population estimates and 2024 Gazetteer files.
  • Snapshot taken Oct 28, 2026. The NWS and Census Bureau do not endorse OpenForecast.

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