S
M
T
W
T
F
S
30
68°
53°
31
70°
50°
1
68°
49°
2
69°
47°
3
68°
47°
4
68°
51°
5
69°
48°
6
65°
50°
7
65°
48°
8
66°
46°
9
65°
50°
10
67°
53°
11
68°
54°
12
70°
53°
13
69°
51°
14
65°
52°
15
67°
52°
16
66°
52°
17
Hist. Avg.
64°
48°
18
Hist. Avg.
64°
48°
19
Hist. Avg.
63°
48°
20
Hist. Avg.
63°
48°
21
Hist. Avg.
63°
47°
22
Hist. Avg.
62°
47°
23
Hist. Avg.
62°
47°
24
Hist. Avg.
62°
47°
25
Hist. Avg.
62°
46°
26
Hist. Avg.
61°
46°
27
Hist. Avg.
61°
46°
28
Hist. Avg.
61°
46°
29
Hist. Avg.
60°
46°
30
Hist. Avg.
60°
45°
1
Hist. Avg.
60°
45°
2
Hist. Avg.
59°
45°
3
Hist. Avg.
59°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Rethem
Rethem's September 2026 forecast shows daily high temperatures ranging from 65° to 70°, with overnight lows between 46° and 54°. The average high for September is 67° with an average low of 50°. 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 Rethem. See also: October | November | December.
