S
M
T
W
T
F
S
30
76°
54°
31
76°
55°
1
77°
61°
2
75°
63°
3
83°
63°
4
84°
62°
5
83°
58°
6
78°
53°
7
74°
54°
8
78°
54°
9
76°
51°
10
74°
52°
11
73°
52°
12
77°
51°
13
75°
58°
14
80°
57°
15
71°
52°
16
70°
54°
17
71°
55°
18
69°
56°
19
74°
47°
20
70°
51°
21
72°
48°
22
73°
47°
23
70°
47°
24
70°
46°
25
71°
53°
26
73°
50°
27
68°
55°
28
73°
52°
29
74°
44°
30
66°
49°
1
69°
53°
2
74°
51°
3
72°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Mifflinburg
Mifflinburg's September 2026 forecast shows daily high temperatures ranging from 66° to 84°, with overnight lows between 44° and 63°. The average high for September is 74° 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 Mifflinburg. See also: October | November | December.
