S
M
T
W
T
F
S
30
91°
71°
31
86°
68°
1
89°
64°
2
84°
63°
3
82°
57°
4
84°
63°
5
95°
59°
6
93°
75°
7
102°
75°
8
102°
77°
9
108°
79°
10
95°
75°
11
88°
72°
12
88°
70°
13
86°
70°
14
81°
66°
15
82°
64°
16
82°
64°
17
79°
64°
18
82°
62°
19
83°
63°
20
79°
66°
21
80°
65°
22
81°
64°
23
82°
66°
24
81°
65°
25
86°
64°
26
86°
64°
27
85°
65°
28
84°
62°
29
85°
63°
30
82°
61°
1
78°
60°
2
80°
62°
3
79°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Lake Murray
Lake Murray's September 2026 forecast shows daily high temperatures ranging from 78° to 86°, with overnight lows between 60° and 66°. The average high for September is 82° with an average low of 63°. 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 Murray. See also: October | November | December.