S
M
T
W
T
F
S
30
78°
55°
31
77°
55°
1
77°
59°
2
78°
62°
3
80°
62°
4
85°
63°
5
84°
61°
6
82°
55°
7
80°
54°
8
78°
54°
9
77°
53°
10
75°
52°
11
75°
53°
12
76°
53°
13
78°
58°
14
80°
58°
15
78°
56°
16
75°
55°
17
74°
54°
18
75°
57°
19
76°
50°
20
76°
53°
21
75°
50°
22
79°
48°
23
72°
47°
24
72°
48°
25
71°
53°
26
72°
48°
27
73°
53°
28
72°
53°
29
73°
45°
30
70°
48°
1
69°
52°
2
75°
51°
3
74°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Maryland
Maryland's September 2026 forecast shows daily high temperatures ranging from 69° to 85°, with overnight lows between 45° and 63°. The average high for September is 76° with an average low of 54°. 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 Maryland. See also: October | November | December.
