S
M
T
W
T
F
S
30
68°
51°
31
70°
49°
1
71°
49°
2
70°
47°
3
68°
48°
4
68°
51°
5
69°
46°
6
66°
49°
7
67°
47°
8
65°
46°
9
65°
51°
10
69°
52°
11
67°
53°
12
70°
52°
13
69°
50°
14
64°
51°
15
68°
51°
16
65°
45°
17
64°
45°
18
Hist. Avg.
63°
48°
19
Hist. Avg.
63°
48°
20
Hist. Avg.
62°
48°
21
Hist. Avg.
62°
48°
22
Hist. Avg.
62°
48°
23
Hist. Avg.
61°
47°
24
Hist. Avg.
61°
47°
25
Hist. Avg.
61°
47°
26
Hist. Avg.
60°
47°
27
Hist. Avg.
60°
47°
28
Hist. Avg.
60°
47°
29
Hist. Avg.
59°
46°
30
Hist. Avg.
59°
46°
1
Hist. Avg.
59°
46°
2
Hist. Avg.
58°
46°
3
Hist. Avg.
58°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Idafehn
Idafehn's September 2026 forecast shows daily high temperatures ranging from 64° to 71°, with overnight lows between 45° and 53°. The average high for September is 68° 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 Idafehn. See also: October | November | December.