Weather in Knoxville: September
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Average day temperature: | 81.0°F |
| Average night temperature: | 63.9°F | |
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Number of sunny days: | 15 days |
| Day length: | 11.8 - 12.9 hours | |
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Number of rainy days: | 1 day |
| Precipitation totals: | 1.6 in. | |
| more information | ||
14 days
forecast
forecast
| Knoxville |
weather in
October
October
| Knoxville |
Air temperature in September, °F
Show year:
2026
2025
2024
The highest day temperature during September of 2026 was 101°F. At the same time the lowest night temperature was 55°F. Daily and nightly averages during September were 85.1°F and 68.7°F.
Sunny, partly cloudy and cloudy days
Mostly all days in September are sunny but cloudy days are also possible.
Precipitation total in September, in.
Precipitation total value in Knoxville in September is 1.6 in. Other months of the year show relatively similar values.
Wind speed in September, mph
The average wind speed value in September is 3.9 mph It makes September one of the least windy months of the year.
Average sunny hours
This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in September is: 8.3.
Best time for vacation in Knoxville
Knoxville on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Knoxville
Local time: 14:57
October 02, friday
1500
90°F
NE
7 mph
7 mph
1800
84°F
E
6 mph
6 mph
2100
75°F
S
2 mph
2 mph
October 03, saturday
0000
70°F
S
5 mph
5 mph
0300
68°F
S
4 mph
4 mph
0600
66°F
S
4 mph
4 mph
0900
66°F
SW
4 mph
4 mph
1200
73°F
SW
5 mph
5 mph
