S
M
T
W
T
F
S
30
70°
53°
31
71°
56°
1
71°
55°
2
70°
56°
3
71°
52°
4
65°
52°
5
64°
53°
6
65°
52°
7
69°
52°
8
70°
50°
9
69°
50°
10
69°
51°
11
68°
53°
12
68°
53°
13
67°
52°
14
67°
53°
15
66°
53°
16
66°
51°
17
67°
49°
18
67°
52°
19
66°
51°
20
65°
47°
21
66°
44°
22
62°
45°
23
64°
45°
24
63°
44°
25
60°
44°
26
61°
45°
27
63°
48°
28
64°
50°
29
64°
50°
30
63°
49°
1
62°
48°
2
60°
46°
3
58°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Iffens
Iffens's September 2026 forecast shows daily high temperatures ranging from 58° to 71°, with overnight lows between 44° and 56°. The average high for September is 66° 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 Iffens. See also: October | November | December.