S
M
T
W
T
F
S
30
76°
63°
31
76°
60°
1
71°
58°
2
71°
55°
3
69°
56°
4
68°
61°
5
66°
57°
6
68°
52°
7
71°
52°
8
77°
59°
9
68°
56°
10
64°
51°
11
66°
48°
12
N/A
13
68°
54°
14
65°
51°
15
73°
59°
16
68°
52°
17
66°
53°
18
65°
51°
19
68°
57°
20
67°
53°
21
67°
52°
22
70°
52°
23
66°
49°
24
65°
51°
25
68°
52°
26
64°
50°
27
63°
48°
28
66°
51°
29
65°
50°
30
64°
50°
1
63°
50°
2
63°
49°
3
62°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Blankensee
Blankensee's September 2026 forecast shows daily high temperatures ranging from 62° to 73°, with overnight lows between 48° and 59°. The average high for September is 66° with an average low of 52°. 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 Blankensee. See also: October | November | December.