S
M
T
W
T
F
S
30
75°
51°
31
86°
49°
1
73°
56°
2
64°
52°
3
65°
51°
4
67°
52°
5
74°
56°
6
73°
52°
7
71°
52°
8
73°
51°
9
75°
54°
10
77°
52°
11
79°
53°
12
77°
52°
13
75°
50°
14
74°
48°
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 63° to 79°, with overnight lows between 41° and 56°. 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.
