S
M
T
W
T
F
S
30
85°
58°
31
83°
67°
1
92°
68°
2
78°
67°
3
85°
69°
4
85°
67°
5
80°
58°
6
78°
56°
7
77°
51°
8
83°
50°
9
87°
57°
10
86°
68°
11
81°
65°
12
78°
69°
13
82°
66°
14
74°
51°
15
77°
55°
16
84°
62°
17
88°
62°
18
81°
59°
19
76°
55°
20
73°
53°
21
74°
51°
22
75°
54°
23
76°
56°
24
79°
52°
25
70°
49°
26
71°
53°
27
78°
56°
28
79°
55°
29
73°
51°
30
77°
56°
1
76°
54°
2
74°
50°
3
76°
54°
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 88°, with overnight lows between 49° and 69°. The average high for September is 77° with an average low of 56°. 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.
