S
M
T
W
T
F
S
30
81°
56°
31
79°
56°
1
79°
57°
2
80°
58°
3
78°
61°
4
79°
56°
5
81°
57°
6
80°
56°
7
79°
54°
8
78°
55°
9
78°
55°
10
79°
56°
11
78°
53°
12
77°
53°
13
77°
54°
14
78°
56°
15
79°
59°
16
81°
58°
17
80°
52°
18
75°
50°
19
75°
52°
20
76°
55°
21
74°
50°
22
74°
54°
23
79°
55°
24
78°
56°
25
79°
55°
26
78°
48°
27
76°
49°
28
71°
48°
29
71°
48°
30
70°
46°
1
Hist. Avg.
74°
49°
2
Hist. Avg.
74°
48°
3
Hist. Avg.
73°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Red Lion
Red Lion's September 2026 forecast shows daily high temperatures ranging from 70° to 81°, with overnight lows between 46° and 61°. The average high for September is 77° with an average low of 54°. 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 Red Lion. See also: October | November | December.
