Carrollton, IL Weather

Greene County9:28 AM CDT39.30°N, 90.41°WElevation 620 ft

Current conditions

Clear
55°
Clear
Feels like 55°
High 76°·Low 47°
WindE 9 mph
Humidity77%
Dew point48°
Pressure30.37 inHg
Visibility10 mi
Cloud cover29%
UV index1 Low
Sunrise7:21 AM
Sunset6:12 PM

Observed at St. Charles, St. Charles County Smartt Airport · 33 min ago

Forecast

10-day

  • Today

    Mostly sunny, with a high near 76. Southeast wind around 6 mph.

  • Tonight

    Mostly clear, with a low around 47. Southeast wind around 3 mph.

  • Sunday

    Mostly sunny, with a high near 79. South wind around 3 mph.

National Weather Service forecast updated 2 hrs ago.

Hourly

Hourly forecast
  1. Now Mostly Sunny 54°
  2. 10 AM Mostly Sunny 60°
  3. 11 AM Mostly Sunny 65°
  4. 12 PM Mostly Sunny 71°
  5. 1 PM Mostly Sunny 72°
  6. 2 PM Mostly Sunny 74°
  7. 3 PM Mostly Sunny 76°
  8. 4 PM Sunny 74°
  9. 5 PM Mostly Sunny 74°
  10. 6 PM Partly Cloudy 70°
  11. 7 PM Partly Cloudy 64°
  12. 8 PM Partly Cloudy 60°
  13. 9 PM Mostly Clear 58°
  14. 10 PM Mostly Clear 56°
  15. 11 PM Mostly Clear 55°
  16. Sun12 AM Mostly Clear 54°
  17. 1 AM Mostly Clear 54°
  18. 2 AM Mostly Clear 52°
  19. 3 AM Mostly Clear 51°
  20. 4 AM Mostly Clear 49°
  21. 5 AM Mostly Clear 49°
  22. 6 AM Sunny 49°
  23. 7 AM Sunny 47°
  24. 8 AM Sunny 49°

10-day forecast

Details
  1. TodayOct 24 Mostly Sunny Mostly Sunny47°76°
  2. SunOct 25 Mostly Sunny Mostly Sunny50°79°
  3. MonOct 26 Partly Sunny Partly Sunny50°77°
  4. TueOct 27 Mostly Cloudy Mostly Cloudy51°75°
  5. WedOct 28 Mostly Sunny Mostly Sunny52°79°
  6. ThuOct 29 Sunny Sunny50°76°
  7. FriOct 30 Mostly Sunny Mostly Sunny23%51°75°
  8. SatOct 31 Cloudy Cloudy0.07 in59°74°
  9. SunNov 1 Rain Rain0.45 in63°76°
  10. MonNov 2 Heavy rain Heavy rain0.89 in66°71°

Days after the National Weather Service's seven are MET Norway's outlook, a computer model with no forecaster's review.

Radar

Full map
Open the National Weather Service radar (the map here needs JavaScript).

Weather news in Illinois

More weather news
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  • Gorgeous weather continues for Central Illinois

    WEDNESDAY: Warming up with sunny skies and calm conditions. High: 75 Low: 47 THURSDAY: Above average with sunny skies. High: 76 Low: 47 FRIDAY: Nice weather continues with sunny skies. High: 76 Low: 46 SATURDAY: Some…

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  • Another beautiful day ahead for Central Illinois

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    CENTRAL ILLINOIS (25News Now) - Fall is making an appearance across central Illinois this weekend, but don’t get too comfortable with the chilly temperatures. After a cold start on Sunday morning, sunshine will help…

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  • Overnight Frost Advisory for parts of Illinois, NW Indiana

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  • Frost advisory back in effect for Central Illinois

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Air quality

63
Moderate
Fine particles (PM2.5)

Acceptable. Unusually sensitive people should consider limiting prolonged outdoor exertion.

Saint Louis, MO reporting area · 1 hr ago. Data from AirNow (EPA and its state, local and tribal partners); preliminary and subject to change.

Sun & moon

Sunrise 7:21 AM
Sunset 6:12 PM
Daylight 10 h 50 min (−2 min 23 s tomorrow)
Waxing Gibbous · 97% lit
Moonrise 5:03 PM Moonset 5:37 AM
Full moon Oct 26 New moon Nov 9

Almanac

Monthly
Normal high / low63° / 40°
Record high85° (1940)
Record low22° (2006)
Wettest1.43 in (1920)
Yesterday77° / 43°
Month to date1.95 in (normal 2.20 in)

White Hall 1 E, records since 1887. Normals 1991–2020. Data from NOAA's Regional Climate Centers (ACIS).

Nearby

Forecasters' discussion

From the National Weather Service office in LSX, issued 6 hrs ago

Key Messages

- A stagnant pattern remains in place keeping warm and dry conditions through the end of the week.

Short Term

Issued at 228 AM CDT Sat Oct 24 2026

A slow moving upper-level ridge remains over the central CONUS keeping dry and seasonably warm conditions in the Mid-Mississippi Valley through the weekend and into Monday. As a result, very little change in the weather day-to-day is expected. The only change is the presence of some upper-level clouds. The stubborn ridge continues to drive high temperatures into the mid to upper 70s, with some areas possibly exceeding 80 on Sunday depending on the thickness of the clouds. Dry air will allow for radiative cooling overnight keeping low temperatures in the upper 40s to low 50s, with the 40s predominately being in the river valleys and southeastern MO and southwestern IL. This is due to the presence of fewer clouds in that region, which will allow for more efficient radiative cooling overnight.

Long Term

Issued at 228 AM CDT Sat Oct 24 2026

Over the western CONUS, a deep upper-level trough is present and is expected to propagate to the northeast toward the north-central CONUS and into the Midwest during the middle of the week. Guidance is in good consensus that as the trough tracks northeast it will reduce the amplitude of the ridge over the region. The current forecasted track of the trough will cause the associated cold front to stay well to the north of the region, resulting in dry and seasonably warm conditions in the region continuing through the entire week. High temperatures will remain in the 70s each day.

Earlier guidance had indicated a potential pattern change at the end of the week, but latest model trends indicate stronger confidence that the ridge remains in place through the end of the week. Yesterday, the NBM and LREF guidances continued to hint at the possibility of a cold front coming at the end of the week with IQRs of 10-15 degrees for Thursday and Friday, but latest runs have IQRs of 5-10 degrees by raising the 25th percentile from being in the 60s to being in the low 70s. At the same time, this model trend has also decreased the chance of rain at the end of the week down to 10-30 percent on Friday while increasing the chances the following weekend ahead of the potential cold front.

Aviation

Issued at 1220 AM CDT Sat Oct 24 2026

High pressure continues to bring calm winds and VFR conditions. There continues to be a daily threat of fog in the valleys each morning, but thus far some high level cirrus clouds are providing enough of a blanket tonight to make this less likely than previous nights. However, if these clouds disperse then locally greater cooling may lead to local instances of fog through 12 or 13Z. The greatest chances are at SUS or CPS.

Forecasts, observations and alerts in the United States come from the National Weather Service (NOAA); radar from NOAA's Multi-Radar Multi-Sensor system; satellite imagery from NASA's Global Imagery Browse Services (GIBS) and NOAA's GOES satellites; the map from the U.S. Geological Survey's National Map; air quality from AirNow (EPA and its partners); hurricane information from the National Hurricane Center; climate normals and records from NOAA's Regional Climate Centers (ACIS). Forecasts outside the United States and the UV index: MET Norway (CC BY 4.0); observations outside the U.S.: airport reports via NOAA's Aviation Weather Center. Place names: GeoNames (CC BY 4.0). Data are copied on a schedule and may lag the sources; for warnings that affect your safety, follow your local National Weather Service office and emergency officials. Weather news is drawn from the 4Search index and reflects what the press published. Terms of use.