S
M
T
W
T
F
S
30
72°
53°
31
75°
57°
1
79°
57°
2
77°
58°
3
79°
53°
4
76°
47°
5
75°
49°
6
68°
45°
7
70°
53°
8
76°
55°
9
77°
56°
10
78°
52°
11
75°
50°
12
69°
54°
13
71°
49°
14
71°
50°
15
67°
51°
16
70°
52°
17
71°
49°
18
74°
47°
19
68°
49°
20
71°
44°
21
69°
42°
22
64°
49°
23
64°
51°
24
72°
52°
25
73°
49°
26
70°
52°
27
70°
50°
28
73°
46°
29
70°
47°
30
65°
51°
1
70°
41°
2
70°
39°
3
60°
38°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Black Lake
Black Lake's September 2026 forecast shows daily high temperatures ranging from 60° to 79°, with overnight lows between 38° and 58°. The average high for September is 71° with an average low of 50°. 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 Black Lake. See also: October | November | December.
