S
M
T
W
T
F
S
30
81°
66°
31
77°
64°
1
77°
57°
2
79°
55°
3
81°
57°
4
N/A
5
77°
51°
6
78°
56°
7
86°
61°
8
75°
57°
9
69°
50°
10
67°
53°
11
67°
53°
12
66°
52°
13
67°
52°
14
67°
52°
15
65°
51°
16
66°
52°
17
67°
47°
18
70°
48°
19
73°
54°
20
72°
53°
21
70°
49°
22
71°
52°
23
71°
53°
24
70°
50°
25
72°
53°
26
72°
52°
27
70°
51°
28
67°
52°
29
69°
52°
30
68°
45°
1
62°
44°
2
60°
44°
3
58°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Frankenthal
Frankenthal's September 2026 forecast shows daily high temperatures ranging from 58° to 86°, with overnight lows between 43° and 61°. The average high for September is 69° with an average low of 51°. 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 Frankenthal. See also: October | November | December.