S
M
T
W
T
F
S
30
90°
72°
31
92°
71°
1
91°
71°
2
89°
70°
3
86°
70°
4
87°
67°
5
84°
67°
6
85°
69°
7
85°
68°
8
87°
69°
9
88°
69°
10
84°
68°
11
84°
63°
12
86°
68°
13
89°
67°
14
86°
61°
15
82°
61°
16
81°
60°
17
82°
61°
18
83°
62°
19
88°
61°
20
88°
66°
21
87°
65°
22
86°
66°
23
86°
65°
24
84°
61°
25
85°
61°
26
86°
62°
27
86°
61°
28
85°
63°
29
85°
63°
30
84°
62°
1
85°
62°
2
85°
61°
3
84°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Watkins Glen
Watkins Glen's September 2026 forecast shows daily high temperatures ranging from 81° to 92°, with overnight lows between 56° and 72°. The average high for September is 86° with an average low of 65°. 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 Watkins Glen. See also: October | November | December.
