S
M
T
W
T
F
S
30
84°
44°
31
72°
45°
1
75°
45°
2
77°
41°
3
74°
40°
4
80°
42°
5
79°
42°
6
77°
38°
7
76°
37°
8
75°
37°
9
70°
39°
10
69°
41°
11
68°
44°
12
74°
45°
13
78°
46°
14
75°
45°
15
74°
44°
16
77°
42°
17
72°
36°
18
67°
35°
19
66°
34°
20
73°
40°
21
73°
39°
22
72°
39°
23
70°
44°
24
73°
42°
25
64°
38°
26
62°
42°
27
64°
36°
28
60°
32°
29
57°
36°
30
61°
43°
1
60°
44°
2
62°
33°
3
63°
30°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Elk River
Elk River's September 2026 forecast shows daily high temperatures ranging from 57° to 84°, with overnight lows between 30° and 46°. The average high for September is 71° with an average low of 40°. 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 Elk River. See also: October | November | December.
