S
M
T
W
T
F
S
30
86°
61°
31
89°
69°
1
82°
70°
2
92°
69°
3
93°
71°
4
84°
68°
5
83°
68°
6
80°
58°
7
82°
60°
8
86°
59°
9
89°
68°
10
79°
72°
11
81°
65°
12
78°
65°
13
84°
56°
14
73°
50°
15
84°
64°
16
89°
66°
17
87°
67°
18
81°
62°
19
80°
67°
20
73°
61°
21
74°
58°
22
70°
56°
23
72°
54°
24
71°
54°
25
73°
55°
26
77°
52°
27
78°
58°
28
78°
58°
29
77°
57°
30
76°
58°
1
76°
58°
2
76°
56°
3
74°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Philo
Philo's September 2026 forecast shows daily high temperatures ranging from 70° to 89°, with overnight lows between 50° and 67°. The average high for September is 77° with an average low of 58°. 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 Philo. See also: October | November | December.