S
M
T
W
T
F
S
30
102°
79°
31
102°
78°
1
101°
78°
2
100°
80°
3
94°
78°
4
100°
77°
5
101°
77°
6
100°
79°
7
98°
78°
8
102°
80°
9
100°
79°
10
98°
79°
11
97°
81°
12
103°
79°
13
99°
79°
14
97°
77°
15
93°
72°
16
91°
71°
17
90°
71°
18
89°
72°
19
88°
68°
20
86°
67°
21
85°
66°
22
90°
72°
23
89°
71°
24
88°
70°
25
81°
70°
26
85°
69°
27
85°
69°
28
87°
68°
29
86°
69°
30
85°
61°
1
76°
57°
2
75°
58°
3
75°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Watauga
Watauga's September 2026 forecast shows daily high temperatures ranging from 75° to 103°, with overnight lows between 57° and 81°. The average high for September is 89° with an average low of 70°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Watauga. See also: October | November | December.