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Walnut, IA Weather

It is 55°F and mostly cloudy in Walnut, IA, observed at 10:35 PM CDT. Tonight: Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms, low 54°F. Hourly and 7-day forecast from the National Weather Service. Times are local (CDT).

Walnut, IA current weather

55°F

Mostly Cloudy

H -- / L 54°Feels like 55°

Observed at Harlan, Harlan Municipal Airport (9.2 mi away), 10/30/2026, 10:35 PM CDT

Hourly forecast

NWS, updated 10/30/2026, 9:18 PM PT

  1. Now58°18%
  2. 12 AM58°26%Sat
  3. 1 AM58°33%
  4. 2 AM58°39%
  5. 3 AM58°47%
  6. 4 AM58°54%
  7. 5 AM58°49%
  8. 6 AM56°53%
  9. 7 AM58°50%
  10. 8 AM58°56%
  11. 9 AM58°61%
  12. 10 AM60°57%
  13. 11 AM62°39%
  14. 12 PM63°31%
  15. 1 PM63°24%
  16. 2 PM64°19%
  17. 3 PM64°17%
  18. 4 PM64°17%
  19. 5 PM64°15%
  20. 6 PM64°15%
  21. 7 PM61°16%
  22. 8 PM59°16%
  23. 9 PM57°15%
  24. 10 PM57°21%
  25. 11 PM56°21%
  26. 12 AM56°22%Sun
  27. 1 AM56°17%
  28. 1 AM56°15%
  29. 2 AM56°14%
  30. 3 AM56°14%
  31. 4 AM55°10%
  32. 5 AM54°
  33. 6 AM54°17%
  34. 7 AM54°
  35. 8 AM55°
  36. 9 AM58°
  37. 10 AM61°
  38. 11 AM63°
  39. 12 PM63°
  40. 1 PM66°
  41. 2 PM65°
  42. 3 PM66°
  43. 4 PM66°
  44. 5 PM65°
  45. 6 PM62°
  46. 7 PM60°
  47. 8 PM59°
  48. 9 PM58°

7-day forecast

Tap a day for details

  • Today10/3054% chance of precipitationLow 54°High

    Tonight: A slight chance of showers and thunderstorms before midnight, then a chance of showers and thunderstorms. Cloudy. Low around 54, with temperatures rising to around 58 overnight. Southeast wind 7 to 10 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.

    Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms
  • Sat10/3161% chance of precipitationLow 53°High 64°

    Saturday: A chance of rain showers before 7am, then rain showers likely and patchy fog. Cloudy, with a high near 64. South wind around 8 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.

    Saturday Night: A slight chance of rain showers before 2am. Mostly cloudy, with a low around 53. Southeast wind around 7 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.

    Rain Showers Likely
  • Sun11/159% chance of precipitationLow 56°High 66°

    Sunday: A slight chance of rain showers before 7am. Partly sunny, with a high near 66. Southeast wind 6 to 10 mph. Chance of precipitation is 20%.

    Sunday Night: Rain showers likely after midnight. Cloudy, with a low around 56. South southeast wind 8 to 18 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    Slight Chance Rain Showers then Partly Sunny
  • Mon11/2100% chance of precipitationLow 54°High 68°

    Monday: Rain showers before noon, then showers and thunderstorms. Cloudy, with a high near 68. South southeast wind 20 to 25 mph, with gusts as high as 35 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

    Monday Night: Showers and thunderstorms. Mostly cloudy, with a low around 54. South southwest wind 10 to 20 mph, with gusts as high as 26 mph.

    Rain Showers
  • Tue11/379% chance of precipitationLow 46°High 62°

    Tuesday: Rain showers. Mostly cloudy, with a high near 62. West northwest wind around 13 mph, with gusts as high as 20 mph.

    Tuesday Night: A chance of rain showers. Mostly cloudy, with a low around 46. North northwest wind 9 to 13 mph, with gusts as high as 18 mph.

    Rain Showers
  • Wed11/437% chance of precipitationLow 43°High 60°

    Wednesday: A chance of rain showers. Partly sunny, with a high near 60. North northwest wind around 12 mph, with gusts as high as 18 mph.

    Wednesday Night: Partly cloudy, with a low around 43. North wind 5 to 9 mph.

    Chance Rain Showers
  • Thu11/519% chance of precipitationLow 40°High 57°

    Thursday: A slight chance of rain showers. Partly sunny, with a high near 57. North wind 6 to 9 mph.

    Thursday Night: Partly cloudy, with a low around 40. North northeast wind around 5 mph.

    Slight Chance Rain Showers
  • Fri11/613% chance of precipitationLow High 57°

    Friday: Partly sunny, with a high near 57. Northeast wind around 5 mph.

    Partly Sunny

Forecast for 41.485, -95.222 from the NWS OAX office, updated 10/30/2026, 9:18 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. Now58°Slight Chance Showers And Thunderstorms18%10 mph
  2. 12 AM58°Chance Showers And Thunderstorms26%9 mph
  3. 1 AM58°Chance Showers And Thunderstorms33%8 mph
  4. 2 AM58°Chance Showers And Thunderstorms39%7 mph
  5. 3 AM58°Chance Showers And Thunderstorms47%7 mph
  6. 4 AM58°Chance Rain Showers54%7 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 Walnut, IA right now?
The latest observation from Harlan, Harlan Municipal Airport was 55°F and mostly cloudy, reported at 10/30/2026, 10:35 PM CDT.
Will it rain in Walnut, IA in the next 24 hours?
The hourly forecast shows a 54% chance of precipitation around 10/31/2026, 4:00 AM CDT.
What time is sunrise and sunset in Walnut, IA today?
Sunrise is about 7:50 AM CDT and sunset is about 6:18 PM CDT (calculated for the center of the area, within a few minutes).
What is the normal October weather in Walnut, IA?
At Atlantic 1 NE, the 1991 to 2020 normal high in October is 65°F and the normal low is 38°F.

Rain and snow totals

Next 3 days, NWS forecast grid

Rain (liquid)
1.33 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 (Southwest Iowa)
35GoodOzone
AQI forecast tomorrow (Southwest Iowa)
56ModeratePM2.5

UV index guide · Air quality

Drought

By county

Pottawattamie County, week of 10/27/2026

No drought or abnormal dryness in this county.

Sun and moon

Local time, center of the area

Sunrise
7:50 AM
Sunset
6:18 PM
Daylight
10 hr 28 min
Moon
Waning Gibbous 74% lit
First light (civil dawn)
7:21 AM
Last light (civil dusk)
6:47 PM
Moonrise
9:56 PM
Moonset
1:09 PM

Normal October weather

Climate

Normal October high 65°, low 38°, precipitation 2.93 in for the month. 1991 to 2020 normals at Atlantic 1 NE, 12 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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