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Williamson, IA Weather

It is 54°F and mostly cloudy in Williamson, IA, observed at 9:35 PM CDT. Tonight: Chance Showers And Thunderstorms, low 52°F. Hourly and 7-day forecast from the National Weather Service. Times are local (CDT).

Williamson, IA current weather

54°F

Mostly Cloudy

H -- / L 52°Feels like 54°

Observed at Chariton (6.8 mi away), 10/30/2026, 9:35 PM CDT

Hourly forecast

NWS, updated 10/30/2026, 8:12 PM PT

  1. Now53°40%
  2. 11 PM53°31%
  3. 12 AM54°32%Sat
  4. 1 AM54°16%
  5. 2 AM54°16%
  6. 3 AM54°24%
  7. 4 AM53°37%
  8. 5 AM53°47%
  9. 6 AM53°49%
  10. 7 AM53°57%
  11. 8 AM53°52%
  12. 9 AM55°61%
  13. 10 AM57°57%
  14. 11 AM61°54%
  15. 12 PM63°51%
  16. 1 PM63°25%
  17. 2 PM64°11%
  18. 3 PM65°11%
  19. 4 PM65°11%
  20. 5 PM64°11%
  21. 6 PM63°11%
  22. 7 PM60°
  23. 8 PM58°10%
  24. 9 PM57°19%
  25. 10 PM57°13%
  26. 11 PM56°
  27. 12 AM55°Sun
  28. 1 AM55°
  29. 1 AM54°
  30. 2 AM54°
  31. 3 AM54°
  32. 4 AM55°
  33. 5 AM55°
  34. 6 AM55°
  35. 7 AM53°
  36. 8 AM56°
  37. 9 AM59°
  38. 10 AM61°
  39. 11 AM63°
  40. 12 PM65°
  41. 1 PM66°
  42. 2 PM67°
  43. 3 PM68°10%
  44. 4 PM66°10%
  45. 5 PM64°10%
  46. 6 PM62°
  47. 7 PM61°
  48. 8 PM60°

7-day forecast

Tap a day for details

  • Today10/3047% chance of precipitationLow 52°High

    Tonight: A chance of showers and thunderstorms before 4am, then a chance of showers and thunderstorms. Cloudy, with a low around 52. East southeast wind 5 to 8 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.

    Chance Showers And Thunderstorms
  • Sat10/3161% chance of precipitationLow 53°High 65°

    Saturday: Showers and thunderstorms likely before 2pm. Cloudy, with a high near 65. Southeast wind around 6 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.

    Saturday Night: A slight chance of rain showers between 9pm and 10pm. Cloudy. Low around 53, with temperatures rising to around 55 overnight. East southeast wind around 6 mph. Chance of precipitation is 20%.

    Showers And Thunderstorms Likely
  • Sun11/132% chance of precipitationLow 54°High 68°

    Sunday: Partly sunny. High near 68, with temperatures falling to around 64 in the afternoon. East southeast wind around 6 mph.

    Sunday Night: A chance of rain showers after midnight. Mostly cloudy, with a low around 54. Southeast wind 5 to 9 mph. Chance of precipitation is 30%. New rainfall amounts between a tenth and quarter of an inch possible.

    Partly Sunny
  • Mon11/293% chance of precipitationLow 58°High 69°

    Monday: Rain showers likely before noon, then showers and thunderstorms. Cloudy, with a high near 69. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.

    Monday Night: Showers and thunderstorms. Mostly cloudy, with a low around 58. Chance of precipitation is 90%.

    Showers And Thunderstorms
  • Tue11/380% chance of precipitationLow 50°High 68°

    Tuesday: Rain showers. Mostly cloudy, with a high near 68. Chance of precipitation is 80%.

    Tuesday Night: A chance of rain showers. Mostly cloudy, with a low around 50. Chance of precipitation is 30%.

    Rain Showers
  • Wed11/435% chance of precipitationLow 46°High 64°

    Wednesday: A chance of rain showers. Mostly cloudy, with a high near 64. Chance of precipitation is 40%.

    Wednesday Night: A slight chance of rain showers before midnight. Mostly cloudy, with a low around 46.

    Chance Rain Showers
  • Thu11/517% chance of precipitationLow 43°High 61°

    Thursday: A slight chance of rain showers before noon. Partly sunny, with a high near 61.

    Thursday Night: Partly cloudy, with a low around 43.

    Slight Chance Rain Showers then Partly Sunny
  • Fri11/612% chance of precipitationLow High 60°

    Friday: Partly sunny, with a high near 60.

    Partly Sunny

Forecast for 41.088, -93.257 from the NWS DMX office, updated 10/30/2026, 8:12 PM PT · Official forecast on weather.gov

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. Now53°Chance Showers And Thunderstorms40%8 mph
  2. 11 PM53°Chance Showers And Thunderstorms31%8 mph
  3. 12 AM54°Chance Showers And Thunderstorms32%8 mph
  4. 1 AM54°Slight Chance Showers And Thunderstorms16%8 mph
  5. 2 AM54°Slight Chance Showers And Thunderstorms16%6 mph
  6. 3 AM54°Slight Chance Showers And Thunderstorms24%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 Williamson, IA right now?
The latest observation from Chariton was 54°F and mostly cloudy, reported at 10/30/2026, 9:35 PM CDT.
Will it rain in Williamson, IA in the next 24 hours?
The hourly forecast shows a 57% chance of precipitation around 10/31/2026, 7:00 AM CDT.
What time is sunrise and sunset in Williamson, IA today?
Sunrise is about 7:42 AM CDT and sunset is about 6:11 PM CDT (calculated for the center of the area, within a few minutes).
What is the normal October weather in Williamson, IA?
At Chariton 1 E, the 1991 to 2020 normal high in October is 64°F and the normal low is 38°F.

Rain and snow totals

Next 3 days, NWS forecast grid

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

Nearby hazards

Iowa hazards

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

  • Severe storm outlook today:General thunderstormsOutlook 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: None reported

UV and air quality forecast

EPA and AirNow

AQI forecast tomorrow (South-central Iowa)
46GoodPM2.5
AQI forecast tomorrow (South-central Iowa)
58ModeratePM2.5

UV index guide · Air quality

Drought

By county

Lucas County, week of 10/27/2026

No drought or abnormal dryness in this county.

Sun and moon

Local time, center of the area

Sunrise
7:42 AM
Sunset
6:11 PM
Daylight
10 hr 29 min
Moon
Waning Gibbous 74% lit
First light (civil dawn)
7:13 AM
Last light (civil dusk)
6:39 PM
Moonrise
9:50 PM
Moonset
1 PM

Normal October weather

Climate

Normal October high 64°, low 38°, precipitation 2.98 in for the month. 1991 to 2020 normals at Chariton 1 E, 5 mi away.

Other places nearby

Data sources

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About this data

Weather and emergencies: Weather, air quality and hazard information on this page is delayed and may be incomplete. It is not a substitute for official warnings. Always follow the National Weather Service, local emergency management and public safety officials. In an emergency, call 911. For evacuation orders, use your local official alert system.

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