S
M
T
W
T
F
S
30
89°
71°
31
90°
73°
1
92°
74°
2
97°
73°
3
96°
72°
4
88°
68°
5
85°
64°
6
84°
64°
7
82°
63°
8
85°
65°
9
88°
67°
10
89°
62°
11
76°
61°
12
77°
60°
13
76°
60°
14
78°
61°
15
82°
63°
16
83°
65°
17
84°
65°
18
83°
64°
19
82°
65°
20
83°
65°
21
83°
64°
22
82°
63°
23
82°
64°
24
83°
63°
25
80°
61°
26
78°
60°
27
75°
60°
28
77°
59°
29
79°
60°
30
79°
60°
1
78°
59°
2
79°
59°
3
80°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Colonial Beach
Colonial Beach's September 2026 forecast shows daily high temperatures ranging from 75° to 97°, with overnight lows between 59° and 74°. The average high for September is 83° with an average low of 64°. 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 Colonial Beach. See also: October | November | December.
