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Herrin, IL Weather

It is 64°F and clear in Herrin, IL, observed at 1:15 AM CDT. Today: Cloudy, high 76°F, low 58°F. Hourly and 10-day forecast from the National Weather Service. Times are local (CDT).

Herrin, IL current weather

64°F

Clear

H 76° / L 58°Feels like 64°

Observed at Marion - Williamson County Regional Airport (1.9 mi away), 10/31/2026, 1:15 AM CDT

Hourly forecast

NWS, updated 10/30/2026, 11:26 PM PT

  1. Now62°
  2. 2 AM61°
  3. 3 AM61°
  4. 4 AM60°
  5. 5 AM59°
  6. 6 AM59°
  7. 7 AM58°
  8. 8 AM58°
  9. 9 AM60°
  10. 10 AM66°
  11. 11 AM70°
  12. 12 PM72°
  13. 1 PM73°
  14. 2 PM74°
  15. 3 PM75°
  16. 4 PM75°
  17. 5 PM76°
  18. 6 PM74°
  19. 7 PM70°
  20. 8 PM68°
  21. 9 PM65°
  22. 10 PM64°11%
  23. 11 PM64°13%
  24. 12 AM63°17%Sun
  25. 1 AM62°37%
  26. 1 AM61°39%
  27. 2 AM60°50%
  28. 3 AM59°53%
  29. 4 AM58°31%
  30. 5 AM57°58%
  31. 6 AM57°71%
  32. 7 AM56°71%
  33. 8 AM58°64%
  34. 9 AM61°48%
  35. 10 AM63°45%
  36. 11 AM63°19%
  37. 12 PM62°36%
  38. 1 PM63°24%
  39. 2 PM63°34%
  40. 3 PM62°
  41. 4 PM64°
  42. 5 PM62°
  43. 6 PM61°
  44. 7 PM60°
  45. 8 PM59°
  46. 9 PM58°
  47. 10 PM57°
  48. 11 PM57°

10-day forecast

Tap a day for details

  • Today10/31Low 58°High 76°

    Saturday: Cloudy, with a high near 76. East southeast wind around 7 mph.

    Overnight: Cloudy, with a low around 58. East wind around 5 mph.

    Cloudy
  • Sun11/171% chance of precipitationLow 54°High 64°

    Sunday: Rain showers likely before 3pm. Mostly cloudy, with a high near 64. Southeast wind 7 to 10 mph. Chance of precipitation is 70%.

    Sunday Night: Mostly cloudy, with a low around 54. Southeast wind around 7 mph.

    Rain Showers Likely
  • Mon11/2Low 60°High 70°

    Monday: Mostly cloudy, with a high near 70. South southeast wind 7 to 13 mph, with gusts as high as 20 mph.

    Monday Night: Mostly cloudy, with a low around 60. South southeast wind 13 to 21 mph.

    Mostly Cloudy
  • Tue11/355% chance of precipitationLow 55°High 73°

    Tuesday: Rain showers likely. Mostly cloudy, with a high near 73. South southeast wind 15 to 22 mph, with gusts as high as 32 mph.

    Tuesday Night: A chance of rain showers before midnight, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 55. South wind 5 to 15 mph, with gusts as high as 20 mph.

    Rain Showers Likely
  • Wed11/441% chance of precipitationLow 48°High 70°

    Wednesday: A chance of rain showers before noon, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 70. Southwest wind 5 to 9 mph.

    Wednesday Night: A slight chance of rain showers. Partly cloudy, with a low around 48. West northwest wind around 3 mph.

    Chance Rain Showers
  • Thu11/520% chance of precipitationLow 46°High 69°

    Thursday: A slight chance of rain showers. Mostly sunny, with a high near 69. West northwest wind 1 to 7 mph.

    Thursday Night: Partly cloudy, with a low around 46. Northwest wind around 3 mph.

    Slight Chance Rain Showers
  • Fri11/6Low High 69°

    Friday: Mostly sunny, with a high near 69. North northwest wind 3 to 7 mph.

    Mostly Sunny
  • Sat11/7Model blendLow 41°High 66°

    Saturday: Partly cloudy. High near 66°. Low that night near 41°.

    Computer model guidance from the NOAA National Blend of Models, not a forecast written by NWS forecasters. Expect changes this far out.

  • Sun11/8Model blend14% chance of precipitationLow 40°High 66°

    Sunday: Partly cloudy. High near 66°. Low that night near 40°. About 0.06 in of precipitation.

    Computer model guidance from the NOAA National Blend of Models, not a forecast written by NWS forecasters. Expect changes this far out.

  • Mon11/9Model blendLow 39°High 66°

    Monday: Partly cloudy. High near 66°. Low that night near 39°. About 0.02 in of precipitation.

    Computer model guidance from the NOAA National Blend of Models, not a forecast written by NWS forecasters. Expect changes this far out.

Forecast for 37.793, -89.021 from the NWS PAH office, updated 10/30/2026, 11:26 PM PT · Official forecast on weather.gov

Days 8 to 10: NOAA National Blend of Models, station KMDH (Murphysboro/S Illinois Arpt, 12 mi), model run 10/30/2026, 9:00 PM CDT

From the National Weather Service; may be delayed. Not for life-safety decisions. In an emergency, call 911.

Next 6 hours

NWS hourly forecast

  1. Now62°Mostly Cloudy1%3 mph
  2. 2 AM61°Cloudy1%5 mph
  3. 3 AM61°Cloudy1%3 mph
  4. 4 AM60°Cloudy1%3 mph
  5. 5 AM59°Cloudy1%3 mph
  6. 6 AM59°Cloudy1%5 mph

Hourly details

Next 7 days: temperature chart, feels like, rain and snow amounts, sky cover, wind and gustsShow

Radar and satellite

National radar

NEXRAD (up to 24 hours) and GOES

Latest

Frequently asked questions

What is the weather in Herrin, IL right now?
The latest observation from Marion - Williamson County Regional Airport was 64°F and clear, reported at 10/31/2026, 1:15 AM CDT.
What is the high temperature today in Herrin, IL?
The National Weather Service forecast for saturday calls for a high near 76°F. Cloudy.
Will it rain in Herrin, IL in the next 24 hours?
The NWS hourly forecast does not show any hour with a 50% or higher chance of precipitation in the next 24 hours.
What is the 10-day forecast for Herrin, IL?
The first 7 days come from the National Weather Service forecast. Days 8 to 10 (Nov 7 to Nov 9) come from the NOAA National Blend of Models, with highs near 66°F. Model guidance this far out often changes.
What time is sunrise and sunset in Herrin, IL today?
Sunrise is about 7:20 AM CDT and sunset is about 5:58 PM CDT (calculated for the center of the area, within a few minutes).
What is the normal October weather in Herrin, IL?
At Carbondale Sewage Plt, the 1991 to 2020 normal high in October is 70°F and the normal low is 44°F.

Rain and snow totals

Next 3 days, NWS forecast grid

Rain (liquid)
0.17 in
Snow
0.00 in
Ice
0.00 in

Nearby hazards

Illinois hazards

Severe storm and flash flood outlooks, expected rain, river flooding and wildfires near this area

  • Severe storm outlook today:Could not check the Storm Prediction Center outlook right now.Outlook map
  • Excessive rainfall outlook (flash flood risk):Could not check the Weather Prediction Center outlook right now.
  • River gauges within 40 miles at or above flood stage: None reported
  • Active wildfires within 50 miles: Blake Fire (0 acres)

UV and air quality forecast

EPA and AirNow

AQI forecast today (St. Louis (Metro-east))
ModeratePM2.5
AQI forecast tomorrow (St. Louis (Metro-east))
ModeratePM2.5

UV index guide · Air quality

Drought

By county

Williamson County, week of 10/27/2026

100% of the county is in moderate drought or worse.

Sun and moon

Local time, center of the area

Sunrise
7:20 AM
Sunset
5:58 PM
Daylight
10 hr 38 min
Moon
Waning Gibbous 73% lit
First light (civil dawn)
6:53 AM
Last light (civil dusk)
6:25 PM
Moonrise
10:59 PM
Moonset
1:19 PM

Normal October weather

Climate

Normal October high 70°, low 44°, precipitation 3.70 in for the month. 1991 to 2020 normals at Carbondale Sewage Plt, 9 mi away.

Other places nearby

Data sources

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About this data

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