Knoxville, TN 14-Day Forecast
Tennessee, United States 🇺🇸
84°
Overcast right now
Today: high 97°, low 73°
Updated 7 hours ago
Knoxville weather for the next 14 days
Tuesday, August 18
Sunny High 89° Low 71°Precipitation
57%
· 0.06 in
Max wind
6 mph
Humidity
71%
UV index
9 - Very High
Sunrise / sunset
06:56 AM / 08:22 PM
Wednesday, August 19
Sunny High 90° Low 69°Precipitation
3%
· 0.0 in
Max wind
5 mph
Humidity
59%
UV index
10 - Very High
Sunrise / sunset
06:57 AM / 08:21 PM
Thursday, August 20
Overcast High 90° Low 70°Precipitation
57%
· 0.06 in
Max wind
9 mph
Humidity
63%
UV index
8 - Very High
Sunrise / sunset
06:58 AM / 08:19 PM
Friday, August 21
Overcast High 84° Low 67°Precipitation
75%
· 0.17 in
Max wind
7 mph
Humidity
76%
UV index
6 - Moderate
Sunrise / sunset
06:59 AM / 08:18 PM
Saturday, August 22
Sunny High 85° Low 67°Precipitation
57%
· 0.04 in
Max wind
6 mph
Humidity
72%
UV index
7 - High
Sunrise / sunset
06:59 AM / 08:17 PM
Sunday, August 23
Sunny High 86° Low 66°Precipitation
2%
· 0.0 in
Max wind
6 mph
Humidity
56%
UV index
7 - High
Sunrise / sunset
07:00 AM / 08:16 PM
Monday, August 24
Sunny High 89° Low 67°Precipitation
5%
· 0.0 in
Max wind
5 mph
Humidity
54%
UV index
8 - Very High
Sunrise / sunset
07:01 AM / 08:14 PM
Tuesday, August 25
Sunny High 89° Low 71°Precipitation
6%
· 0.0 in
Max wind
8 mph
Humidity
57%
UV index
8 - Very High
Sunrise / sunset
07:02 AM / 08:13 PM
Wednesday, August 26
Sunny High 88° Low 71°Precipitation
5%
· 0.0 in
Max wind
12 mph
Humidity
62%
UV index
8 - Very High
Sunrise / sunset
07:02 AM / 08:12 PM
Thursday, August 27
Sunny High 84° Low 65°Precipitation
5%
· 0.0 in
Max wind
10 mph
Humidity
62%
UV index
7 - High
Sunrise / sunset
07:03 AM / 08:10 PM
Friday, August 28
Sunny High 83° Low 64°Precipitation
6%
· 0.0 in
Max wind
7 mph
Humidity
60%
UV index
7 - High
Sunrise / sunset
07:04 AM / 08:09 PM
Saturday, August 29
Sunny High 85° Low 64°Precipitation
3%
· 0.0 in
Max wind
6 mph
Humidity
51%
UV index
7 - High
Sunrise / sunset
07:05 AM / 08:07 PM
Sunday, August 30
Sunny High 86° Low 65°Precipitation
5%
· 0.0 in
Max wind
5 mph
Humidity
55%
UV index
8 - Very High
Sunrise / sunset
07:06 AM / 08:06 PM
Knoxville 14-day outlook: the story
The warmest day of Knoxville's 14-day outlook is Monday, August 17 with a high near 97°F (36°C); the coolest night comes Friday, August 28, dipping to 64°F (18°C). Temperatures hold fairly steady from week to week. Highs over the next two weeks average 89°F (32°C), about 3°F (2°C) above the typical August high of 86°F (30°C).
Precipitation is most likely on Monday 17, Tuesday 18, Thursday 20, Friday 21 and beyond; the wettest day looks like Friday, August 21 with about 0.17 in (4.3 mm) expected. For the weekend, expect Saturday 85°F (29°C) and sunny / Sunday 86°F (30°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, August 21.
What will be the warmest day in Knoxville over the next 14 days?
Monday, August 17, with a forecast high near 97°F (36°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