S
M
T
W
T
F
S
30
75°
51°
31
88°
58°
1
72°
55°
2
62°
52°
3
62°
51°
4
69°
52°
5
70°
49°
6
73°
50°
7
75°
52°
8
76°
51°
9
78°
51°
10
77°
52°
11
76°
49°
12
70°
52°
13
70°
48°
14
74°
50°
15
75°
49°
16
69°
48°
17
68°
47°
18
68°
44°
19
69°
49°
20
67°
46°
21
67°
42°
22
68°
42°
23
66°
43°
24
65°
41°
25
65°
41°
26
68°
43°
27
72°
50°
28
64°
48°
29
65°
43°
30
71°
48°
1
66°
48°
2
63°
45°
3
64°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Stevenson
Stevenson's September 2026 forecast shows daily high temperatures ranging from 62° to 88°, with overnight lows between 41° and 58°. The average high for September is 70° with an average low of 48°. 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 Stevenson. See also: October | November | December.
