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Changes to River Forecast Services at Multiple Locations in Central Iowa, effective 6/22/2026

Hazardous Weather Conditions

Current conditions at

Knoxville (KOXV)

Lat: 41.3° N Lon: 93.12° W Elev: 928 ft.

Overcast

73°F

23°C

Humidity	89%
Wind Speed	SE 9 mph
Barometer	29.86 in
Dewpoint	70°F (21°C)
Visibility	10.00 mi
Last update	27 Jun 10:35 pm CDT

More Information:

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

Detailed forecast for

Marion County

Rest Of Tonight

Mostly cloudy. Near steady temperature around 70. Southeast winds 10 to 15 mph.

Sunday

Mostly sunny. Humid with highs in the lower 90s. Southeast winds 15 to 20 mph with gusts up to 30 mph. Heat index values up to 105 in the afternoon.

Sunday Night

Mostly clear. Humid with lows in the mid 70s. South winds 15 to 20 mph with gusts up to 30 mph. Heat index values up to 105 early in the evening.

Monday

Sunny with highs in the mid 90s. South winds 15 to 20 mph with gusts up to 30 mph. Heat index values up to 107.

Monday Night

Mostly clear in the evening, then becoming partly cloudy. Humid with lows in the mid 70s. South winds 15 to 20 mph with gusts up to 30 mph. Heat index values up to 105 early in the evening.

Tuesday

Sunny, hot with highs in the mid 90s. Heat index values up to 105.

Tuesday Night

Mostly clear with a slight chance of showers and thunderstorms. Lows in the mid 70s. Chance of rain 20 percent. Heat index values up to 105 early in the evening.

Wednesday

Sunny. Highs in the mid 90s. Heat index values up to 100.

Wednesday Night

Mostly clear. Lows in the mid 70s. Heat index values up to 100 early in the evening.

Thursday

Sunny. A slight chance of showers and thunderstorms in the morning. Highs in the mid 90s. Chance of rain 20 percent. Heat index values up to 100.

Thursday Night

Mostly clear. A slight chance of showers and thunderstorms after midnight. Lows in the lower 70s. Chance of rain 20 percent. Heat index values up to 100 early in the evening.

Friday

Sunny, hot with highs in the mid 90s. Heat index values up to 105.

Friday Night

Mostly clear. Lows in the lower 70s. Heat index values up to 100 early in the evening.

Independence Day

Sunny. A slight chance of showers and thunderstorms in the morning. Highs in the mid 90s. Chance of rain 20 percent. Heat index values up to 100.