S
M
T
W
T
F
S
30
76°
58°
31
75°
55°
1
74°
53°
2
68°
52°
3
68°
53°
4
70°
52°
5
67°
49°
6
66°
49°
7
67°
50°
8
67°
48°
9
72°
50°
10
65°
49°
11
72°
54°
12
72°
52°
13
71°
53°
14
65°
52°
15
64°
53°
16
64°
48°
17
63°
46°
18
64°
46°
19
63°
45°
20
62°
46°
21
62°
47°
22
63°
50°
23
61°
52°
24
67°
47°
25
63°
44°
26
60°
46°
27
60°
43°
28
61°
47°
29
60°
49°
30
59°
46°
1
59°
44°
2
60°
47°
3
63°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Blankensee
Blankensee's September 2026 forecast shows daily high temperatures ranging from 59° to 76°, with overnight lows between 43° and 58°. The average high for September is 66° with an average low of 49°. 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.