S
M
T
W
T
F
S
30
66°
44°
31
77°
35°
1
86°
39°
2
64°
45°
3
64°
43°
4
63°
44°
5
65°
41°
6
72°
48°
7
65°
44°
8
67°
40°
9
71°
41°
10
74°
40°
11
71°
38°
12
69°
36°
13
71°
37°
14
73°
38°
15
72°
36°
16
77°
39°
17
64°
32°
18
68°
34°
19
60°
29°
20
62°
35°
21
62°
35°
22
67°
38°
23
71°
33°
24
60°
28°
25
57°
27°
26
59°
28°
27
62°
32°
28
70°
34°
29
69°
35°
30
70°
34°
1
65°
35°
2
69°
37°
3
68°
38°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Philipsburg
Philipsburg's September 2026 forecast shows daily high temperatures ranging from 57° to 77°, with overnight lows between 27° and 48°. The average high for September is 67° with an average low of 37°. 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 Philipsburg. See also: October | November | December.