S
M
T
W
T
F
S
30
90°
68°
31
79°
64°
1
88°
58°
2
89°
64°
3
91°
66°
4
90°
69°
5
92°
70°
6
86°
69°
7
90°
64°
8
93°
64°
9
95°
64°
10
94°
65°
11
N/A
12
97°
72°
13
94°
72°
14
94°
72°
15
89°
69°
16
91°
67°
17
90°
65°
18
90°
64°
19
89°
63°
20
88°
64°
21
85°
60°
22
86°
60°
23
85°
59°
24
84°
61°
25
84°
56°
26
77°
57°
27
85°
61°
28
80°
57°
29
77°
53°
30
79°
57°
1
82°
58°
2
83°
59°
3
76°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Lake Powell
Lake Powell's September 2026 forecast shows daily high temperatures ranging from 76° to 97°, with overnight lows between 53° and 72°. The average high for September is 86° with an average low of 62°. 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 Lake Powell. See also: October | November | December.
