S
M
T
W
T
F
S
30
69°
48°
31
69°
48°
1
70°
54°
2
70°
57°
3
71°
57°
4
78°
56°
5
78°
54°
6
73°
47°
7
69°
47°
8
70°
48°
9
70°
46°
10
68°
46°
11
68°
47°
12
69°
46°
13
70°
52°
14
74°
53°
15
70°
51°
16
67°
49°
17
66°
50°
18
67°
49°
19
69°
43°
20
66°
45°
21
67°
43°
22
69°
41°
23
64°
41°
24
64°
42°
25
65°
47°
26
65°
41°
27
63°
47°
28
65°
46°
29
62°
39°
30
61°
41°
1
61°
46°
2
68°
44°
3
64°
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 61° to 78°, with overnight lows between 38° and 57°. The average high for September is 68° with an average low of 47°. 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.
