Iowa · NWS DMX office

Ottumwa, IA weather

It is 54°F at Oskaloosa, Oskaloosa Municipal Airport as of Oct 28, 3:55 AM CDT. Overnight: Mostly Cloudy, low near 52°F, 1% chance of precipitation. Forecast from the National Weather Service, issued Oct 28, 1:26 AM CDT.

Updated Oct 28, 4:27 AM CDT (snapshot)

Current conditions

Temperature

54°F

Partly Sunny

Wind

SSE 6 mph

Humidity 92% · dew point 51°F

Pressure · visibility

30.12 inHg

Visibility 10 mi

Observed at Oskaloosa, Oskaloosa Municipal Airport (KOOA), Oct 28, 3:55 AM CDT. Station readings can lag or be missing.

Alerts for this area

No active NWS alerts cover the Ottumwa forecast zone right now.

Around the NWS DMX forecast area

No active alerts in zones served by the DMX office near Ottumwa.

From the alert snapshot of Oct 28, 2026, 5:12 AM EDT. No alerts are active anywhere in Iowa.

For official warnings, check weather.gov and your local authorities. OpenForecast repeats National Weather Service alerts and may be delayed or incomplete. Follow instructions from emergency officials.

Next 24 hours

Hourly forecast for Ottumwa (local time)
TimeTempForecastPrecip. chanceWind
Wed 6 AM54°FPartly Sunny3%SSE 5 mph
Wed 7 AM55°FPartly Sunny10%SSE 5 mph
Wed 8 AM55°FMostly Sunny11%SSE 6 mph
Wed 9 AM58°FMostly Sunny12%SSE 6 mph
Wed 10 AM63°FSlight Chance Rain Showers15%S 7 mph
Wed 11 AM67°FSlight Chance Rain Showers16%S 9 mph
Wed 12 PM72°FMostly Sunny11%S 10 mph
Wed 1 PM74°FSunny11%S 10 mph
Wed 2 PM76°FSunny12%S 12 mph
Wed 3 PM77°FSunny10%S 13 mph
Wed 4 PM77°FSunny8%S 13 mph
Wed 5 PM78°FSunny6%S 12 mph
Wed 6 PM76°FPartly Cloudy4%S 10 mph
Wed 7 PM73°FMostly Clear5%S 9 mph
Wed 8 PM72°FPartly Cloudy5%S 9 mph
Wed 9 PM69°FPartly Cloudy6%S 8 mph
Wed 10 PM68°FPartly Cloudy14%S 8 mph
Wed 11 PM67°FSlight Chance Showers And Thunderstorms17%SSW 8 mph
Thu 12 AM66°FSlight Chance Showers And Thunderstorms20%SSW 8 mph
Thu 1 AM65°FChance Showers And Thunderstorms36%SSW 7 mph
Thu 2 AM64°FChance Showers And Thunderstorms26%SW 7 mph
Thu 3 AM63°FSlight Chance Showers And Thunderstorms17%SW 6 mph
Thu 4 AM62°FMostly Cloudy13%WSW 6 mph
Thu 5 AM62°FMostly Cloudy12%WSW 5 mph

Hourly values come from the NWS gridded forecast for the 2.5 km grid square that covers the city's center point. Conditions elsewhere in Ottumwa can differ.

7-day forecast

Overnight

Low 52°F

Mostly cloudy, with a low around 52. South southeast wind around 3 mph.

Wednesday

High 78°F·Low 60°F

A slight chance of rain showers between 10am and noon. Mostly sunny, with a high near 78. South wind 5 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 20%.

Wednesday Night: A slight chance of showers and thunderstorms between 11pm and 1am, then a chance of showers and thunderstorms between 1am and 3am, then a slight chance of showers and thunderstorms between 3am and 4am. Partly cloudy. Low around 60, with temperatures rising to around 62 overnight. South southwest wind 5 to 10 mph, with gusts as high as 22 mph. Chance of precipitation is 40%.

Thursday

High 73°F·Low 49°F

Mostly sunny. High near 73, with temperatures falling to around 71 in the afternoon. North northwest wind around 6 mph.

Thursday Night: A chance of rain showers after 1am. Partly cloudy, with a low around 49. East northeast wind around 3 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.

Friday

High 69°F·Low 53°F

A chance of rain showers before 7am, then showers and thunderstorms. Mostly cloudy, with a high near 69. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch possible.

Friday Night: Showers and thunderstorms likely. Mostly cloudy, with a low around 53. Chance of precipitation is 60%.

Saturday

High 69°F·Low 53°F

Showers and thunderstorms likely. Cloudy, with a high near 69. Chance of precipitation is 60%.

Saturday Night: A chance of rain showers. Mostly cloudy, with a low around 53. Chance of precipitation is 40%.

Sunday

High 69°F·Low 54°F

A chance of rain showers before noon. Mostly cloudy, with a high near 69. Chance of precipitation is 30%.

Sunday Night: A slight chance of rain showers after midnight. Mostly cloudy, with a low around 54.

Monday

High 68°F·Low 54°F

Rain showers likely. Mostly cloudy, with a high near 68. Chance of precipitation is 60%.

Monday Night: Rain showers likely. Mostly cloudy, with a low around 54. Chance of precipitation is 70%.

Tuesday

High 68°F

Rain showers likely. Mostly cloudy, with a high near 68.

Nearby cities

Larger cities in the area

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About this forecast

Forecast office
Ottumwa is served by the National Weather Service DMX forecast office, forecast zone IAZ086, county zone IAC179.
Location used
The Census Bureau's internal point for Ottumwa (41.0223, -92.4233), in Wapello County. Population: 25,648 (2024 estimate), number 19 of the 27 Iowa cities on this site.
Radar
Nearest NWS radar: KDMX. View it on radar.weather.gov.

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Sources

  • Forecast, hourly forecast, observations and alerts: National Weather Service API, api.weather.gov/points/41.0223,-92.4233 (forecast issued Oct 28, 1:26 AM CDT).
  • Official forecast page: forecast.weather.gov.
  • City location and population: U.S. Census Bureau, Vintage 2024 population estimates and 2024 Gazetteer files.
  • Snapshot taken Oct 28, 2026. The NWS and Census Bureau do not endorse OpenForecast.

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