S
M
T
W
T
F
S
30
82°
71°
31
85°
69°
1
79°
67°
2
76°
63°
3
79°
65°
4
77°
66°
5
81°
71°
6
84°
71°
7
79°
70°
8
79°
69°
9
78°
68°
10
77°
67°
11
75°
66°
12
75°
65°
13
76°
65°
14
74°
66°
15
77°
65°
16
79°
69°
17
80°
69°
18
73°
62°
19
72°
64°
20
75°
66°
21
78°
68°
22
76°
68°
23
77°
67°
24
74°
65°
25
75°
67°
26
78°
68°
27
79°
68°
28
79°
67°
29
78°
68°
30
78°
66°
1
79°
67°
2
77°
67°
3
76°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Coronado
Coronado's September 2026 forecast shows daily high temperatures ranging from 72° to 84°, with overnight lows between 62° and 71°. The average high for September is 77° with an average low of 67°. 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 Coronado. See also: October | November | December.
