S
M
T
W
T
F
S
30
82°
61°
31
83°
60°
1
84°
60°
2
84°
57°
3
82°
60°
4
81°
60°
5
82°
59°
6
77°
59°
7
77°
58°
8
78°
51°
9
77°
51°
10
76°
58°
11
79°
58°
12
82°
57°
13
81°
57°
14
80°
58°
15
81°
57°
16
73°
49°
17
74°
52°
18
Hist. Avg.
77°
53°
19
Hist. Avg.
76°
53°
20
Hist. Avg.
76°
52°
21
Hist. Avg.
76°
52°
22
Hist. Avg.
75°
51°
23
Hist. Avg.
75°
51°
24
Hist. Avg.
74°
51°
25
Hist. Avg.
74°
50°
26
Hist. Avg.
73°
50°
27
Hist. Avg.
73°
49°
28
Hist. Avg.
72°
49°
29
Hist. Avg.
72°
49°
30
Hist. Avg.
72°
48°
1
Hist. Avg.
71°
48°
2
Hist. Avg.
71°
48°
3
Hist. Avg.
70°
47°
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 73° to 84°, with overnight lows between 49° and 61°. The average high for September is 80° with an average low of 57°. 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.