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National Weather Service Flood Inundation Mapping Available for Iowa in September 2025

Current conditions at

Ottumwa Regional Airport (KOTM)

Lat: 41.1°NLon: 92.44°WElev: 830ft.

Fair

48°F

9°C

Humidity	93%
Wind Speed	W 8 mph
Barometer	29.91 in (1012.6 mb)
Dewpoint	46°F (8°C)
Visibility	8.00 mi
Wind Chill	44°F (7°C)
Last update	4 Sep 1:53 am CDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

Chillicothe IA

Overnight
Low: 45 °F
Areas Smoke
Thursday
High: 74 °F
Areas Smoke
Thursday Night
Low: 53 °F
Chance
Showers
Friday
High: 69 °F
Mostly Sunny
Friday Night
Low: 44 °F
Mostly Clear
Saturday
High: 73 °F
Sunny
Saturday Night
Low: 43 °F
Mostly Clear
Sunday
High: 72 °F
Sunny
Sunday Night
Low: 46 °F
Clear

Detailed Forecast

Overnight

Areas of smoke. Partly cloudy, with a low around 45. West northwest wind around 5 mph.

Thursday

Areas of smoke before 10am, then areas of smoke after 11am. Mostly sunny, with a high near 74. Light west wind becoming southwest 5 to 9 mph in the morning.

Thursday Night

A 30 percent chance of showers, mainly before 1am. Areas of smoke before 4am. Partly cloudy, with a low around 53. South southwest wind 8 to 11 mph becoming west northwest after midnight. Winds could gust as high as 23 mph.

Friday

Mostly sunny, with a high near 69. Northwest wind around 11 mph, with gusts as high as 21 mph.

Friday Night

Mostly clear, with a low around 44. Northwest wind around 6 mph becoming calm in the evening.

Saturday

Sunny, with a high near 73.

Saturday Night

Mostly clear, with a low around 43.

Sunday

Sunny, with a high near 72.

Sunday Night

Clear, with a low around 46.