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