S
M
T
W
T
F
S
30
82°
62°
31
87°
61°
1
84°
61°
2
87°
66°
3
87°
57°
4
90°
68°
5
91°
68°
6
89°
67°
7
77°
61°
8
83°
54°
9
88°
58°
10
91°
66°
11
87°
66°
12
96°
64°
13
70°
47°
14
73°
57°
15
82°
64°
16
85°
63°
17
84°
62°
18
81°
62°
19
85°
63°
20
84°
60°
21
83°
61°
22
78°
55°
23
71°
48°
24
73°
55°
25
68°
47°
26
69°
46°
27
78°
56°
28
74°
50°
29
70°
49°
30
70°
45°
1
74°
48°
2
77°
48°
3
78°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Millcreek
Millcreek's September 2026 forecast shows daily high temperatures ranging from 68° to 96°, with overnight lows between 45° and 66°. The average high for September is 79° with an average low of 56°. 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 Millcreek. See also: October | November | December.
