S
M
T
W
T
F
S
30
85°
58°
31
80°
67°
1
87°
71°
2
90°
72°
3
88°
65°
4
83°
65°
5
77°
63°
6
75°
55°
7
74°
51°
8
82°
53°
9
85°
61°
10
78°
69°
11
76°
60°
12
75°
60°
13
81°
64°
14
70°
52°
15
75°
45°
16
86°
54°
17
82°
68°
18
77°
60°
19
72°
60°
20
74°
62°
21
66°
55°
22
N/A
23
58°
45°
24
61°
41°
25
66°
44°
26
66°
45°
27
64°
49°
28
64°
51°
29
69°
51°
30
72°
57°
1
70°
51°
2
67°
52°
3
67°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Frostburg
Frostburg's September 2026 forecast shows daily high temperatures ranging from 58° to 72°, with overnight lows between 41° and 57°. The average high for September is 66° with an average low of 49°. 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 Frostburg. See also: October | November | December.