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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

Knoxville (KOXV)

Lat: 41.3°NLon: 93.12°WElev: 928ft.

Fair

77°F

25°C

Humidity	39%
Wind Speed	W 5 mph
Barometer	30.01 in
Dewpoint	50°F (10°C)
Visibility	10.00 mi
Heat Index	78°F (26°C)
Last update	2 Sep 6:35 pm CDT

More Information:

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

Extended Forecast for

Swan IA

Tonight
Low: 59 °F
Mostly Clear
Wednesday
High: 73 °F
Showers
Likely then
Chance
T-storms
Wednesday Night
Low: 46 °F
Partly Cloudy
Thursday
High: 73 °F
Sunny
Thursday Night
Low: 50 °F
Chance
Showers
Friday
High: 68 °F
Sunny
Friday Night
Low: 45 °F
Mostly Clear
Saturday
High: 72 °F
Sunny
Saturday Night
Low: 45 °F
Mostly Clear

Detailed Forecast

Tonight

Mostly clear, with a low around 59. West southwest wind 3 to 6 mph.

Wednesday

Showers and thunderstorms likely before 4pm, then a chance of showers. Mostly cloudy, with a high near 73. West southwest wind 6 to 14 mph becoming north northwest in the afternoon. Winds could gust as high as 22 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Wednesday Night

Partly cloudy, with a low around 46. North northwest wind 5 to 13 mph, with gusts as high as 18 mph.

Thursday

Sunny, with a high near 73. West wind 5 to 10 mph.

Thursday Night

A chance of showers and thunderstorms. Partly cloudy, with a low around 50. Southwest wind around 11 mph becoming west northwest after midnight. Winds could gust as high as 18 mph. Chance of precipitation is 30%.

Friday

Sunny, with a high near 68.

Friday Night

Mostly clear, with a low around 45.

Saturday

Sunny, with a high near 72.

Saturday Night

Mostly clear, with a low around 45.

Sunday

Sunny, with a high near 76.

Sunday Night

Mostly cloudy, with a low around 54.