S
M
T
W
T
F
S
30
77°
53°
31
78°
41°
1
66°
52°
2
76°
40°
3
77°
35°
4
78°
46°
5
79°
47°
6
82°
40°
7
82°
49°
8
80°
43°
9
80°
40°
10
79°
39°
11
79°
42°
12
77°
44°
13
74°
47°
14
67°
46°
15
65°
46°
16
63°
42°
17
62°
42°
18
63°
38°
19
62°
34°
20
62°
38°
21
63°
38°
22
61°
36°
23
60°
37°
24
64°
32°
25
58°
36°
26
62°
36°
27
60°
37°
28
57°
36°
29
59°
32°
30
61°
33°
1
62°
35°
2
64°
34°
3
64°
34°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Red River
Red River's September 2026 forecast shows daily high temperatures ranging from 57° to 79°, with overnight lows between 32° and 47°. The average high for September is 64° with an average low of 38°. 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 River. See also: October | November | December.
