S
M
T
W
T
F
S
30
72°
65°
31
74°
60°
1
78°
64°
2
84°
67°
3
79°
65°
4
76°
60°
5
75°
59°
6
72°
54°
7
76°
53°
8
74°
56°
9
73°
63°
10
75°
58°
11
69°
48°
12
82°
49°
13
78°
64°
14
67°
50°
15
68°
48°
16
76°
61°
17
76°
60°
18
69°
48°
19
65°
41°
20
62°
49°
21
58°
44°
22
64°
38°
23
69°
37°
24
68°
39°
25
70°
44°
26
68°
50°
27
62°
48°
28
62°
48°
29
70°
51°
30
70°
54°
1
71°
53°
2
67°
52°
3
68°
52°
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 62° to 71°, with overnight lows between 37° and 54°. The average high for September is 68° with an average low of 48°. 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.
