S
M
T
W
T
F
S
30
74°
52°
31
78°
42°
1
77°
41°
2
66°
39°
3
65°
40°
4
63°
42°
5
64°
38°
6
66°
46°
7
74°
50°
8
75°
42°
9
72°
39°
10
69°
43°
11
67°
40°
12
67°
43°
13
68°
40°
14
62°
39°
15
63°
45°
16
69°
46°
17
70°
37°
18
62°
46°
19
65°
38°
20
66°
33°
21
58°
38°
22
59°
45°
23
63°
40°
24
68°
35°
25
67°
40°
26
56°
44°
27
62°
42°
28
63°
42°
29
63°
43°
30
59°
35°
1
65°
34°
2
57°
31°
3
54°
34°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Rainy Lake Ut
Rainy Lake Ut's September 2026 forecast shows daily high temperatures ranging from 54° to 78°, with overnight lows between 31° and 52°. The average high for September is 66° with an average low of 41°. 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 Rainy Lake Ut. See also: October | November | December.
