S
M
T
W
T
F
S
30
81°
59°
31
85°
63°
1
86°
63°
2
87°
62°
3
87°
56°
4
83°
54°
5
79°
55°
6
79°
59°
7
83°
61°
8
84°
61°
9
82°
59°
10
78°
60°
11
83°
59°
12
83°
61°
13
82°
60°
14
82°
60°
15
84°
59°
16
84°
59°
17
81°
58°
18
82°
52°
19
78°
51°
20
75°
50°
21
72°
48°
22
73°
53°
23
75°
51°
24
76°
48°
25
72°
48°
26
72°
49°
27
73°
48°
28
77°
53°
29
76°
54°
30
78°
53°
1
73°
54°
2
74°
48°
3
75°
52°
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 72° to 87°, with overnight lows between 48° and 63°. The average high for September is 79° with an average low of 55°. 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.
