S
M
T
W
T
F
S
30
97°
70°
31
96°
73°
1
95°
72°
2
96°
71°
3
94°
70°
4
92°
71°
5
92°
71°
6
94°
72°
7
96°
71°
8
96°
71°
9
95°
70°
10
96°
71°
11
95°
71°
12
96°
70°
13
96°
70°
14
94°
68°
15
91°
68°
16
93°
69°
17
92°
69°
18
89°
68°
19
89°
69°
20
92°
70°
21
93°
69°
22
89°
68°
23
89°
64°
24
94°
63°
25
88°
62°
26
86°
62°
27
Hist. Avg.
88°
63°
28
Hist. Avg.
88°
63°
29
Hist. Avg.
88°
63°
30
Hist. Avg.
88°
62°
1
Hist. Avg.
88°
62°
2
Hist. Avg.
87°
62°
3
Hist. Avg.
87°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Sheridan
Sheridan's September 2026 forecast shows daily high temperatures ranging from 86° to 97°, with overnight lows between 62° and 73°. The average high for September is 93° with an average low of 69°. 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 Sheridan. See also: October | November | December.