S
M
T
W
T
F
S
30
78°
54°
31
80°
55°
1
81°
51°
2
77°
44°
3
69°
52°
4
73°
54°
5
68°
44°
6
71°
41°
7
67°
42°
8
68°
43°
9
67°
50°
10
71°
51°
11
74°
52°
12
72°
42°
13
70°
41°
14
63°
39°
15
61°
40°
16
63°
39°
17
65°
44°
18
70°
37°
19
61°
35°
20
60°
42°
21
62°
48°
22
68°
42°
23
67°
45°
24
66°
48°
25
68°
47°
26
69°
42°
27
68°
37°
28
59°
36°
29
56°
41°
30
56°
40°
1
57°
39°
2
58°
45°
3
56°
30°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Red Lake
Red Lake's September 2026 forecast shows daily high temperatures ranging from 56° to 81°, with overnight lows between 30° and 55°. The average high for September is 67° with an average low of 44°. 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 Lake. See also: October | November | December.