S
M
T
W
T
F
S
30
75°
51°
31
77°
52°
1
76°
51°
2
76°
43°
3
71°
41°
4
67°
49°
5
69°
50°
6
75°
43°
7
72°
41°
8
64°
38°
9
65°
45°
10
68°
49°
11
70°
50°
12
74°
48°
13
73°
44°
14
67°
41°
15
62°
38°
16
62°
44°
17
64°
41°
18
62°
38°
19
69°
35°
20
60°
35°
21
59°
45°
22
63°
44°
23
68°
38°
24
64°
43°
25
64°
44°
26
61°
44°
27
68°
37°
28
67°
36°
29
60°
39°
30
56°
41°
1
61°
37°
2
64°
42°
3
61°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Crystal Falls
Crystal Falls's September 2026 forecast shows daily high temperatures ranging from 56° to 77°, with overnight lows between 35° and 52°. The average high for September is 67° with an average low of 43°. 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 Crystal Falls. See also: October | November | December.
