Knoxville, TN 14-Day Forecast
Tennessee, United States 🇺🇸
89°
Overcast right now
Today: high 89°, low 63°
Updated 2 hours ago
Knoxville weather for the next 14 days
Thursday, August 27
Sunny High 89° Low 69°Precipitation
68%
· 0.18 in
Max wind
15 mph
Humidity
72%
UV index
9 - Very High
Sunrise / sunset
07:03 AM / 08:10 PM
Friday, August 28
Overcast High 86° Low 67°Precipitation
14%
· 0.0 in
Max wind
6 mph
Humidity
69%
UV index
8 - Very High
Sunrise / sunset
07:04 AM / 08:09 PM
Saturday, August 29
Sunny High 89° Low 67°Precipitation
5%
· 0.0 in
Max wind
4 mph
Humidity
58%
UV index
8 - Very High
Sunrise / sunset
07:05 AM / 08:07 PM
Sunday, August 30
Sunny High 90° Low 71°Precipitation
7%
· 0.0 in
Max wind
5 mph
Humidity
62%
UV index
8 - Very High
Sunrise / sunset
07:06 AM / 08:06 PM
Monday, August 31
Sunny High 92° Low 74°Precipitation
4%
· 0.0 in
Max wind
7 mph
Humidity
58%
UV index
8 - Very High
Sunrise / sunset
07:06 AM / 08:05 PM
Tuesday, September 1
Sunny High 93° Low 74°Precipitation
4%
· 0.0 in
Max wind
4 mph
Humidity
56%
UV index
8 - Very High
Sunrise / sunset
07:07 AM / 08:03 PM
Wednesday, September 2
Sunny High 94° Low 76°Precipitation
36%
· 0.02 in
Max wind
10 mph
Humidity
58%
UV index
8 - Very High
Sunrise / sunset
07:08 AM / 08:02 PM
Thursday, September 3
Sunny High 94° Low 74°Precipitation
36%
· 0.03 in
Max wind
6 mph
Humidity
64%
UV index
8 - Very High
Sunrise / sunset
07:09 AM / 08:00 PM
Friday, September 4
Sunny High 90° Low 70°Precipitation
73%
· 0.32 in
Max wind
8 mph
Humidity
78%
UV index
8 - Very High
Sunrise / sunset
07:09 AM / 07:59 PM
Saturday, September 5
Overcast High 89° Low 70°Precipitation
80%
· 0.27 in
Max wind
8 mph
Humidity
77%
UV index
8 - Very High
Sunrise / sunset
07:10 AM / 07:58 PM
Sunday, September 6
Sunny High 89° Low 71°Precipitation
73%
· 0.19 in
Max wind
3 mph
Humidity
73%
UV index
8 - Very High
Sunrise / sunset
07:11 AM / 07:56 PM
Monday, September 7
Sunny High 89° Low 72°Precipitation
7%
· 0.0 in
Max wind
6 mph
Humidity
64%
UV index
8 - Very High
Sunrise / sunset
07:12 AM / 07:55 PM
Tuesday, September 8
Patchy rain nearby High 86° Low 69°Precipitation
66%
· 0.08 in
Max wind
9 mph
Humidity
75%
UV index
7 - High
Sunrise / sunset
07:12 AM / 07:53 PM
Knoxville 14-day outlook: the story
The warmest day of Knoxville's 14-day outlook is Thursday, September 3 with a high near 94°F (34°C); the coolest night comes Wednesday, August 26, dipping to 63°F (17°C). Temperatures hold fairly steady from week to week. Highs over the next two weeks average 90°F (32°C), about 4°F (2°C) above the typical August high of 86°F (30°C).
Precipitation is most likely on Thursday 27, Friday 4, Saturday 5, Sunday 6 and beyond; the wettest day looks like Friday, September 4 with about 0.32 in (8.2 mm) expected. For the weekend, expect Saturday 89°F (32°C) and sunny / Sunday 90°F (32°C) and sunny.
For typical conditions month by month, see the Knoxville climate & average temperatures guide.
Knoxville forecast questions
Will it rain in Knoxville this week?
The forecast currently shows meaningful precipitation chances on 5 of the next 14 days, peaking around Friday, September 4.
What will be the warmest day in Knoxville over the next 14 days?
Thursday, September 3, with a forecast high near 94°F (34°C).
How accurate is a 14-day forecast for Knoxville?
Days 1-3 are highly reliable, days 4-7 capture the overall pattern well, and days 8-14 indicate trends rather than exact figures - check back as the date approaches; this page refreshes throughout the day.
Average temperatures in Knoxville by month
| Month | High | Low | Rain days | Precipitation | Sunshine | Humidity |
|---|---|---|---|---|---|---|
| January | 47° | 31° | 12 | 4.4 in | 6.2 h/day | 73% |
| February | 54° | 35° | 12 | 6.0 in | 6.4 h/day | 73% |
| March | 61° | 41° | 12 | 5.1 in | 8.1 h/day | 70% |
| April | 69° | 48° | 11 | 4.4 in | 9.8 h/day | 69% |
| May | 78° | 58° | 12 | 3.8 in | 10.8 h/day | 72% |
| June | 85° | 66° | 12 | 3.3 in | 11.9 h/day | 69% |
| July | 88° | 70° | 15 | 4.0 in | 11.7 h/day | 73% |
| August | 86° | 69° | 13 | 4.3 in | 11.1 h/day | 74% |
| September | 83° | 64° | 9 | 3.4 in | 10.1 h/day | 70% |
| October | 72° | 53° | 7 | 3.2 in | 9.0 h/day | 71% |
| November | 60° | 41° | 8 | 3.5 in | 7.5 h/day | 72% |
| December | 53° | 36° | 11 | 5.1 in | 5.8 h/day | 77% |
14-day forecasts nearby