S
M
T
W
T
F
S
30
84°
64°
31
85°
63°
1
80°
59°
2
79°
57°
3
79°
57°
4
78°
55°
5
78°
57°
6
81°
62°
7
82°
61°
8
81°
57°
9
78°
55°
10
78°
55°
11
81°
61°
12
82°
61°
13
83°
60°
14
83°
60°
15
82°
59°
16
81°
59°
17
82°
60°
18
80°
58°
19
79°
57°
20
78°
57°
21
79°
55°
22
79°
50°
23
75°
55°
24
71°
56°
25
Hist. Avg.
76°
54°
26
Hist. Avg.
76°
54°
27
Hist. Avg.
76°
54°
28
Hist. Avg.
75°
53°
29
Hist. Avg.
75°
53°
30
Hist. Avg.
75°
52°
1
Hist. Avg.
74°
52°
2
Hist. Avg.
74°
52°
3
Hist. Avg.
73°
51°
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 71° to 85°, with overnight lows between 50° and 64°. The average high for September is 80° with an average low of 58°. 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.