S
M
T
W
T
F
S
30
71°
58°
31
70°
58°
1
70°
53°
2
68°
51°
3
65°
51°
4
67°
52°
5
69°
53°
6
68°
54°
7
69°
56°
8
69°
57°
9
68°
56°
10
68°
55°
11
67°
55°
12
68°
56°
13
67°
55°
14
67°
48°
15
62°
48°
16
63°
50°
17
65°
54°
18
66°
47°
19
60°
48°
20
59°
54°
21
61°
53°
22
65°
53°
23
58°
45°
24
58°
46°
25
Hist. Avg.
62°
50°
26
Hist. Avg.
61°
50°
27
Hist. Avg.
61°
50°
28
Hist. Avg.
61°
50°
29
Hist. Avg.
61°
49°
30
Hist. Avg.
60°
49°
1
Hist. Avg.
60°
49°
2
Hist. Avg.
60°
49°
3
Hist. Avg.
60°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Hemer
Hemer's September 2026 forecast shows daily high temperatures ranging from 58° to 71°, with overnight lows between 45° and 58°. The average high for September is 66° with an average low of 53°. 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 Hemer. See also: October | November | December.