S
M
T
W
T
F
S
30
84°
63°
31
82°
66°
1
88°
72°
2
91°
73°
3
88°
68°
4
81°
68°
5
77°
61°
6
77°
57°
7
79°
54°
8
82°
57°
9
84°
63°
10
79°
68°
11
79°
63°
12
86°
61°
13
81°
58°
14
70°
48°
15
82°
60°
16
86°
66°
17
81°
66°
18
77°
61°
19
74°
61°
20
72°
55°
21
71°
56°
22
68°
54°
23
70°
51°
24
70°
52°
25
72°
55°
26
71°
56°
27
75°
52°
28
75°
51°
29
74°
52°
30
74°
51°
1
73°
52°
2
74°
50°
3
73°
46°
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 68° to 86°, with overnight lows between 46° and 66°. The average high for September is 74° with an average low of 55°. 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.