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Belknap, IL Weather

Tonight: Partly Cloudy, low 51°F. Hourly and 10-day forecast from the National Weather Service. Times are local (CDT).

Belknap, IL current weather

72°F

Mostly Clear

Forecast for this hour. No recent report from a nearby station.

H -- / L 51°

No recent station report. NWS hourly forecast updated 10/29/2026, 3:26 PM PT

Hourly forecast

NWS, updated 10/29/2026, 3:26 PM PT

  1. Now72°
  2. 7 PM67°
  3. 8 PM62°
  4. 9 PM60°
  5. 10 PM58°
  6. 11 PM57°
  7. 12 AM55°Fri
  8. 1 AM55°
  9. 2 AM54°
  10. 3 AM53°
  11. 4 AM52°
  12. 5 AM52°
  13. 6 AM51°
  14. 7 AM51°
  15. 8 AM53°
  16. 9 AM58°
  17. 10 AM67°
  18. 11 AM72°
  19. 12 PM75°
  20. 1 PM77°
  21. 2 PM78°
  22. 3 PM79°
  23. 4 PM80°
  24. 5 PM78°
  25. 6 PM75°
  26. 7 PM70°
  27. 8 PM64°
  28. 9 PM62°
  29. 10 PM61°
  30. 11 PM61°
  31. 12 AM60°Sat
  32. 1 AM60°
  33. 2 AM59°
  34. 3 AM59°
  35. 4 AM58°
  36. 5 AM58°
  37. 6 AM57°
  38. 7 AM57°
  39. 8 AM57°
  40. 9 AM60°
  41. 10 AM65°
  42. 11 AM68°
  43. 12 PM71°
  44. 1 PM72°
  45. 2 PM74°
  46. 3 PM75°
  47. 4 PM74°
  48. 5 PM72°

10-day forecast

Tap a day for details

  • Today10/29Low 51°High

    Tonight: Partly cloudy, with a low around 51. West wind around 2 mph.

    Partly Cloudy
  • Fri10/30Low 57°High 80°

    Friday: Mostly sunny. High near 80, with temperatures falling to around 78 in the afternoon. East southeast wind 0 to 3 mph.

    Friday Night: Mostly cloudy, with a low around 57. East wind around 2 mph.

    Mostly Sunny
  • Sat10/3151% chance of precipitationLow 55°High 75°

    Saturday: Cloudy, with a high near 75. East wind around 3 mph.

    Saturday Night: A chance of rain showers after 7pm. Mostly cloudy, with a low around 55. Southeast wind around 3 mph. Chance of precipitation is 50%.

    Cloudy
  • Sun11/159% chance of precipitationLow 54°High 68°

    Sunday: Rain showers likely before 9am, then showers and thunderstorms likely between 9am and noon, then a slight chance of showers and thunderstorms. Mostly cloudy, with a high near 68. Southeast wind 3 to 7 mph. Chance of precipitation is 60%.

    Sunday Night: Mostly cloudy, with a low around 54. Southeast wind around 3 mph.

    Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms
  • Mon11/227% chance of precipitationLow 58°High 71°

    Monday: A slight chance of rain showers before noon. Mostly cloudy, with a high near 71. South southeast wind 3 to 8 mph.

    Monday Night: A chance of rain showers. Mostly cloudy, with a low around 58. South southeast wind 7 to 13 mph, with gusts as high as 21 mph.

    Slight Chance Rain Showers then Mostly Cloudy
  • Tue11/357% chance of precipitationLow 56°High 75°

    Tuesday: A chance of rain showers. Partly sunny, with a high near 75. South southeast wind 10 to 14 mph, with gusts as high as 23 mph.

    Tuesday Night: Rain showers likely. Mostly cloudy, with a low around 56. South southeast wind 7 to 10 mph, with gusts as high as 20 mph.

    Chance Rain Showers
  • Wed11/459% chance of precipitationLow 49°High 70°

    Wednesday: Rain showers likely. Mostly cloudy, with a high near 70. South southeast wind 6 to 10 mph, with gusts as high as 18 mph.

    Wednesday Night: A chance of rain showers before midnight. Mostly cloudy, with a low around 49. Southwest wind around 3 mph.

    Rain Showers Likely
  • Thu11/514% chance of precipitationLow High 66°

    Thursday: Mostly sunny, with a high near 66. West wind 2 to 6 mph.

    Mostly Sunny
  • Fri11/6Model blend11% chance of precipitationLow 45°High 66°

    Friday: Partly cloudy. High near 66°. Low that night near 45°.

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

  • Sat11/7Model blendLow 43°High 67°

    Saturday: Partly cloudy. High near 67°. Low that night near 43°.

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

Forecast for 37.324, -88.940 from the NWS PAH office, updated 10/29/2026, 3:26 PM PT · Official forecast on weather.gov

Days 9 to 10: NOAA National Blend of Models, station KPAH (Paducah/Barkley Rgnl, 20 mi), model run 10/29/2026, 3:00 PM CDT

Hazardous weather outlookIssued 10/29/2026, 1:24 AM CDT

Jefferson-Wayne IL-Edwards-Wabash-Perry IL-Franklin-Hamilton- White-Jackson-Williamson-Saline-Gallatin-Union-Johnson-Pope- Hardin-Alexander-Pulaski-Massac-Gibson-Pike-Posey-Vanderburgh- Warrick-Spencer-Fulton-Hickman-Carlisle-Ballard-McCracken-Graves- Livingston-Marshall-Calloway-Crittenden-Lyon-Trigg-Caldwell- Union KY-Webster-Hopkins-Christian-Henderson-Daviess-McLean- Muhlenberg-Todd-Perry MO-Bollinger-Cape Girardeau-Wayne MO-Carter- Ripley-Butler-Stoddard-Scott-Mississippi-New Madrid- 124 AM CDT Thu Oct 29 2026 /224 AM EDT Thu Oct 29 2026/

This Hazardous Weather Outlook is for portions of southern Illinois, southwest Indiana, western Kentucky, and southeast Missouri.

Day one: Today and Tonight

No hazardous weather is expected at this time.

Days two through seven: Friday through Wednesday

No hazardous weather is expected at this time.

Spotter information statement

Spotter activation will not be needed.

Forecaster's discussionIssued 10/29/2026, 12:02 PM CDT

Key messages

- Warm and dry weather is still on track the rest of the week.

- Weekend rain chances have grown and are a little wetter, but still focused between midnight Saturday night and noon Sunday.

- Cooler temperatures closer to normal remain on tap for the new week with continued daily rain chances.

Discussion

Issued at 1200 PM CDT Thu Oct 29 2026

A warm end to the work week proceeds unimpeded with highs around 80F a good dozen or so degrees over climo norms for this time of year.

The weekend weather forecast is a little bit wetter with a little bit better probability of rain, but the overall impact weather remains the same. Best wetting occurs between midnight Saturday night and midday Sunday, when the bulk of the now storm total cumulative precipitation of 1/2-1" amounts over western Ky occurs; lesser amounts are anticipated to the north and west of western Ky.

After a brief lull/wane in pops, still daily rain chances carry on thru next week. The onset of rain chances moves temperatures back a little closer to seasonal norms, with lower half 70s prevailing for highs this weekend thru next week. The best rain chances next week occur Tuesday into Wednesday, with amounts now ranging from about 1/2 inch in our east, upward to 2 inches possibly cumulatively totalling in our west; these projected amounts have been varying greatly from run-to-run and day-to- day, so will be monitored and adjusted accordingly as the event nears. For now, the mid week looks like our best chance for appreciable rainfall over the broader area that we've had for some time.

Aviation

Issued at 1200 PM CDT Thu Oct 29 2026

Visual Flight Rules remain standing and forecast this package. SCT-BKN bases at 5-6K FT AGL are seen on satellite to our northwest and may impact mainly KMVN this evening, otherwise it's mostly FEW-SCT250 or SKC in this still high pressure dominated forecast.

Watches, warnings and advisories

IL: None. MO: None. IN: None. KY: None.

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. Now72°Mostly Clear0%2 mph
  2. 7 PM67°Mostly Clear1%1 mph
  3. 8 PM62°Mostly Clear1%0 mph
  4. 9 PM60°Mostly Clear1%0 mph
  5. 10 PM58°Mostly Clear1%0 mph
  6. 11 PM57°Partly Cloudy1%0 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

Will it rain in Belknap, 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 Belknap, IL?
The first 8 days come from the National Weather Service forecast. Days 9 to 10 (Nov 6 to Nov 7) come from the NOAA National Blend of Models, with highs of 66°F to 67°F. Model guidance this far out often changes.
What time is sunrise and sunset in Belknap, IL today?
Sunrise is about 7:17 AM CDT and sunset is about 6:01 PM CDT (calculated for the center of the area, within a few minutes).
What is the normal October weather in Belknap, IL?
At Grand Chain Dam 53, the 1991 to 2020 normal high in October is 71°F and the normal low is 48°F.

Nearby hazards

Illinois hazards

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

  • Severe storm outlook today:No thunderstorm risk area over this locationOutlook 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 (Clarksville-Montgomery County)
51ModeratePM2.5
AQI forecast tomorrow (Clarksville-Montgomery County)
51ModeratePM2.5

UV index guide · Air quality

Drought

By county

Johnson 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
7:17 AM
Sunset
6:01 PM
Daylight
10 hr 44 min
Moon
Waning Gibbous 84% lit
First light (civil dawn)
6:50 AM
Last light (civil dusk)
6:28 PM
Moonrise
8:36 PM
Moonset
11:24 AM

Normal October weather

Climate

Normal October high 71°, low 48°, precipitation 4.04 in for the month. 1991 to 2020 normals at Grand Chain Dam 53, 10 mi away.

Other places nearby

Data sources

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About this data

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