September 2026 Weather | Johnson City, Tennessee

Today 9/1
Cloudy Weather
Day 93°
Night 66°
25
Wed 9/2
Cloudy Weather
Day 95°
Night 68°
8
Thu 9/3
Cloudy Weather
Day 93°
Night 68°
19
Fri 9/4
Cloudy Weather
Day 93°
Night 68°
55
Sat 9/5
Cloudy Weather
Day 88°
Night 64°
55
Sun 9/6
Cloudy Weather
Day 84°
Night 64°
55
Mon 9/7
Sunny with a Chance of Thunderstorms
Day 81°
Night 63°
59
Tue 9/8
Cloudy Weather
Day 81°
Night 63°
55
Wed 9/9
Cloudy Weather
Day 82°
Night 61°
59
Thu 9/10
Sunny Weather
Day 82°
Night 63°
5
Fri 9/11
Rainy Weather
Day 81°
Night 61°
72
Sat 9/12
Partly Sunny with Showers
Day 81°
Night 57°
55
Sun 9/13
Sunny Weather
Day 79°
Night 57°
0
Mon 9/14
Cloudy Weather
Day 82°
Night 55°
25
Tue 9/15
Rainy Weather
Day 82°
Night 61°
60
Wed 9/16
Rainy Weather
Day 75°
Night 61°
Thu 9/17
Rainy Weather
Day 75°
Night 59°
7
Fri 9/18
Cloudy Weather
Day 79°
Night 59°
2
Sat 9/19
Cloudy Weather
Day 75°
Night 57°
Sun 9/20
Cloudy Weather
Day 75°
Night 55°
25
Mon 9/21
Cloudy Weather
Day 75°
Night 50°
49
Tue 9/22
Cloudy Weather
Day 75°
Night 52°
55
Wed 9/23
Cloudy Weather
Day 77°
Night 54°
80
Thu 9/24
Sunny Weather
Day 81°
Night 57°
88
Fri 9/25
Cloudy Weather
Day 81°
Night 57°
65
Sat 9/26
Rainy Weather
Day 75°
Night 57°
55
Sun 9/27
Rainy Weather
Day 72°
Night 57°
49
Mon 9/28
Cloudy Weather
Day 73°
Night 57°
49
Tue 9/29
Cloudy Weather
Day 75°
Night 55°
Wed 9/30
Sunny Weather
Day 79°
Night 55°