S
M
T
W
T
F
S
30
76°
52°
31
76°
57°
1
77°
59°
2
74°
60°
3
82°
60°
4
83°
59°
5
82°
54°
6
78°
50°
7
74°
55°
8
81°
54°
9
76°
50°
10
75°
55°
11
75°
49°
12
76°
50°
13
75°
55°
14
80°
49°
15
72°
51°
16
69°
54°
17
70°
52°
18
69°
53°
19
75°
45°
20
70°
49°
21
73°
46°
22
75°
47°
23
74°
45°
24
75°
45°
25
74°
51°
26
75°
51°
27
72°
53°
28
74°
51°
29
75°
43°
30
67°
48°
1
72°
51°
2
73°
49°
3
72°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Loyalhanna
Loyalhanna's September 2026 forecast shows daily high temperatures ranging from 67° to 83°, with overnight lows between 43° and 60°. The average high for September is 75° with an average low of 51°. 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 Loyalhanna. See also: October | November | December.