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

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

Ottumwa Regional Airport (KOTM)

Lat: 41.1°NLon: 92.44°WElev: 830ft.

Fair

69°F

21°C

Humidity	61%
Wind Speed	NW 7 mph
Barometer	29.63 in (1002.9 mb)
Dewpoint	55°F (13°C)
Visibility	10.00 mi
Last update	18 Oct 4:53 pm CDT

More Information:

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

Extended Forecast for

Unionville IA

Tonight
Low: 45 °F
Showers
Likely and
Breezy
Sunday
High: 62 °F
Sunny and
Breezy
Sunday Night
Low: 44 °F
Clear
Monday
High: 70 °F
Sunny and
Windy
Monday Night
Low: 46 °F
Mostly Clear
Tuesday
High: 58 °F
Sunny and
Windy
Tuesday Night
Low: 38 °F
Mostly Clear
Wednesday
High: 60 °F
Sunny
Wednesday Night
Low: 36 °F
Mostly Clear

Detailed Forecast

Tonight

Showers likely, mainly between midnight and 2am. Cloudy, then gradual clearing toward daybreak, with a low around 45. Breezy, with a north northwest wind 6 to 11 mph increasing to 13 to 18 mph in the evening. Winds could gust as high as 36 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

Sunday

Sunny, with a high near 62. Breezy, with a west northwest wind 15 to 18 mph, with gusts as high as 30 mph.

Sunday Night

Clear, with a low around 44. West wind 5 to 10 mph becoming south after midnight. Winds could gust as high as 18 mph.

Monday

Sunny, with a high near 70. Windy, with a south wind 14 to 22 mph, with gusts as high as 32 mph.

Monday Night

Mostly clear, with a low around 46. West wind 11 to 15 mph, with gusts as high as 26 mph.

Tuesday

Sunny, with a high near 58. Windy.

Tuesday Night

Mostly clear, with a low around 38.