S
M
T
W
T
F
S
30
83°
56°
31
83°
56°
1
82°
53°
2
82°
50°
3
80°
50°
4
78°
52°
5
76°
45°
6
73°
53°
7
77°
53°
8
80°
55°
9
81°
54°
10
72°
46°
11
70°
49°
12
75°
49°
13
79°
54°
14
80°
54°
15
81°
49°
16
73°
44°
17
70°
47°
18
76°
48°
19
78°
49°
20
Hist. Avg.
75°
49°
21
Hist. Avg.
74°
49°
22
Hist. Avg.
74°
48°
23
Hist. Avg.
74°
48°
24
Hist. Avg.
73°
48°
25
Hist. Avg.
73°
48°
26
Hist. Avg.
73°
48°
27
Hist. Avg.
72°
48°
28
Hist. Avg.
72°
47°
29
Hist. Avg.
71°
47°
30
Hist. Avg.
71°
47°
1
Hist. Avg.
70°
47°
2
Hist. Avg.
70°
46°
3
Hist. Avg.
70°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Stevenson
Stevenson's September 2026 forecast shows daily high temperatures ranging from 70° to 83°, with overnight lows between 44° and 56°. The average high for September is 78° with an average low of 51°. 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.
