KNOXVILLE, IA 50138 Weather Forecast & Current Conditions

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KNOXVILLE, IA
Current Weather

2:35 AM CDT SEP 4, 2026
Clear
79°F
Feels Like: 82°F
Dewpoint: 70°F
Rel. Hum.: 74%
Visibility: 10 miles
Wind: S at 6 mph
Pressure: 29.87 inches
Last 72 hours

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KNOXVILLE, IA 50138
Weather Forecast

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Snow Depth pages
REST OF TONIGHT
Mostly clear. Near steady temperature in the upper 70s. South winds 5 to 10 mph.
FRIDAY
Sunny, hot with highs in the mid 90s. Southwest winds 5 to 10 mph. Heat index values up to 104 in the afternoon.
FRIDAY NIGHT
Partly cloudy in the evening, then clearing. Humid with lows in the mid 70s. South winds around 5 mph. Heat index values up to 103 early in the evening.
SATURDAY
Sunny with highs in the mid 90s. Southeast winds around 5 mph, becoming northeast in the afternoon. Heat index values up to 103.
SATURDAY NIGHT
Mostly clear. A slight chance of showers and thunderstorms after midnight. Humid with lows in the lower 70s. East winds around 5 mph. Chance of rain 20 percent. Heat index values up to 102 early in the evening.
SUNDAY
Mostly sunny with a chance of showers with a slight chance of thunderstorms. Highs in the upper 80s. Chance of rain 40 percent.
SUNDAY NIGHT
Partly cloudy with a slight chance of thunderstorms. A slight chance of showers in the evening, then a chance of showers after midnight. Lows around 70. Chance of rain 40 percent.
LABOR DAY
Mostly sunny. A slight chance of showers in the morning. Highs in the upper 80s. Chance of rain 20 percent.
MONDAY NIGHT
Partly cloudy. Lows in the lower 70s.
TUESDAY
Mostly sunny. A slight chance of showers and thunderstorms in the morning. Hot with highs in the mid 90s. Chance of rain 20 percent. Heat index values up to 100 in the afternoon.
TUESDAY NIGHT
Mostly clear with a slight chance of showers and thunderstorms in the evening, then partly cloudy with a chance of showers and thunderstorms after midnight. Lows in the mid 70s. Chance of rain 50 percent.
WEDNESDAY
Mostly sunny. A slight chance of showers and thunderstorms in the morning. Highs in the lower 90s. Chance of rain 20 percent.
WEDNESDAY NIGHT
Partly cloudy with a slight chance of thunderstorms. A slight chance of showers in the evening, then a chance of showers after midnight. Lows around 70. Chance of rain 40 percent.

Visible Weather Satellite
KNOXVILLE, IA 50138
Infrared Weather Satellite
KNOXVILLE, IA 50138
NEXRAD Weather Radar
KNOXVILLE, IA 50138

KNOXVILLE, IA 3 hourly weather forecast

weather forecast created  5:00 PM PDT  9/ 3/2026
Friday
4 SEP 2026
KNOXVILLE, IA 50138 weather forecast Day 1, 0 hours 1 AM 81° 84° Clear 5%

0% Thunder
( 18% severe)
S   9 65% 68°
Low 77° KNOXVILLE, IA 50138 weather forecast Day 1, 3 hours 4 AM 79° 81° Clear SSW   9 69% 68°
High 95° KNOXVILLE, IA 50138 weather forecast Day 1, 6 hours 7 AM 78° 80° Clear 8%

0% Thunder
( 15% severe)
SSW   8 74% 69°

Partly Cloudy



KNOXVILLE, IA 50138 weather forecast Day 1, 9 hours 10 AM 86° 91° Partly Cloudy SW   12 61% 71°
KNOXVILLE, IA 50138 weather forecast Day 1, 12 hours 1 PM 93° 100° Partly Cloudy 5%

0% Thunder
( 14% severe)
SSW   12 49% 71°
KNOXVILLE, IA 50138 weather forecast Day 1, 15 hours 4 PM 94° 100° Partly Cloudy SSW   10 46% 70°
KNOXVILLE, IA 50138 weather forecast Day 1, 18 hours 7 PM 90° 96° Mostly Cloudy 4%

0% Thunder
( 24% severe)
SSW   6 54% 71°
KNOXVILLE, IA 50138 weather forecast Day 1, 21 hours 10 PM 81° 85° Partly Cloudy SSE   6 74% 72°
Saturday
5 SEP 2026
KNOXVILLE, IA 50138 weather forecast Day 2, 0 hours 1 AM 77° 79° Partly Cloudy 4%

0% Thunder
( 17% severe)
S   5 82% 71°
Low 74° KNOXVILLE, IA 50138 weather forecast Day 2, 3 hours 4 AM 75° 75° Clear SSE   3 87% 71°
High 93° KNOXVILLE, IA 50138 weather forecast Day 2, 6 hours 7 AM 74° 74° Clear 1%

0% Thunder
( 9% severe)
SE   3 93% 72°

Clear



KNOXVILLE, IA 50138 weather forecast Day 2, 9 hours 10 AM 84° 90° Clear NW   3 67% 72°
KNOXVILLE, IA 50138 weather forecast Day 2, 12 hours 1 PM 92° 100° Clear 2%

0% Thunder
( 12% severe)
NE   3 52% 72°
KNOXVILLE, IA 50138 weather forecast Day 2, 15 hours 4 PM 93° 100° Clear NE   6 49% 71°
KNOXVILLE, IA 50138 weather forecast Day 2, 18 hours 7 PM 88° 97° Clear 1%

0% Thunder
( 14% severe)
E   5 63% 74°
KNOXVILLE, IA 50138 weather forecast Day 2, 21 hours 10 PM 79° 83° Partly Cloudy E   7 85% 74°

KNOXVILLE, IA extended weather forecast

Sunday
6 SEP 2026
Monday
7 SEP 2026
Tuesday
8 SEP 2026
Wednesday
9 SEP 2026
Thursday
10 SEP 2026
Low 70° Low 65° Low 66° Low 69° Low 62°
High 86° High 89° High 94° High 86° High 81°
KNOXVILLE, IA 50138 weather forecast Day 3 KNOXVILLE, IA 50138 weather forecast Day 4 KNOXVILLE, IA 50138 weather forecast Day 5 KNOXVILLE, IA 50138 weather forecast Day 6 KNOXVILLE, IA 50138 weather forecast Day 7
Partly Cloudy
24% Rain
Partly Cloudy
41% Rain
Partly Cloudy
16% Rain
Partly Cloudy
19% Rain
Clear
15% Rain
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