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