S
M
T
W
T
F
S
30
93°
72°
31
96°
73°
1
97°
72°
2
98°
73°
3
95°
72°
4
92°
73°
5
93°
74°
6
95°
73°
7
92°
72°
8
91°
71°
9
93°
70°
10
91°
68°
11
91°
66°
12
88°
65°
13
86°
66°
14
85°
65°
15
87°
68°
16
81°
69°
17
82°
68°
18
84°
68°
19
84°
67°
20
80°
67°
21
81°
66°
22
81°
67°
23
83°
66°
24
85°
66°
25
86°
67°
26
84°
65°
27
85°
66°
28
85°
66°
29
82°
65°
30
84°
65°
1
81°
64°
2
80°
64°
3
80°
63°
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 80° to 98°, with overnight lows between 63° and 74°. The average high for September is 87° with an average low of 68°. 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.
