S
M
T
W
T
F
S
30
86°
68°
31
86°
67°
1
87°
66°
2
80°
60°
3
79°
61°
4
79°
62°
5
80°
60°
6
81°
64°
7
85°
66°
8
85°
66°
9
84°
65°
10
86°
66°
11
86°
66°
12
85°
65°
13
85°
67°
14
85°
59°
15
78°
57°
16
75°
55°
17
76°
56°
18
75°
55°
19
74°
54°
20
74°
53°
21
79°
54°
22
80°
58°
23
81°
53°
24
81°
52°
25
73°
51°
26
73°
52°
27
75°
58°
28
78°
58°
29
78°
49°
30
72°
49°
1
70°
56°
2
71°
56°
3
74°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Linthicum
Linthicum's September 2026 forecast shows daily high temperatures ranging from 70° to 87°, with overnight lows between 49° and 68°. The average high for September is 79° with an average low of 59°. 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 Linthicum. See also: October | November | December.