S
M
T
W
T
F
S
30
68°
55°
31
70°
57°
1
71°
57°
2
70°
56°
3
74°
57°
4
75°
57°
5
74°
55°
6
73°
56°
7
67°
56°
8
69°
55°
9
72°
55°
10
73°
54°
11
74°
55°
12
74°
55°
13
72°
54°
14
72°
53°
15
68°
52°
16
63°
49°
17
66°
51°
18
68°
52°
19
69°
52°
20
67°
53°
21
69°
48°
22
70°
47°
23
69°
47°
24
68°
43°
25
70°
39°
26
62°
49°
27
67°
47°
28
68°
51°
29
69°
37°
30
67°
37°
1
61°
41°
2
62°
43°
3
63°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Deer River
Deer River's September 2026 forecast shows daily high temperatures ranging from 61° to 75°, with overnight lows between 37° and 57°. The average high for September is 69° with an average low of 51°. 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 Deer River. See also: October | November | December.
