S
M
T
W
T
F
S
30
64°
47°
31
65°
56°
1
64°
57°
2
61°
55°
3
62°
55°
4
63°
52°
5
63°
51°
6
65°
51°
7
65°
52°
8
63°
53°
9
66°
52°
10
63°
55°
11
63°
54°
12
62°
54°
13
63°
52°
14
71°
54°
15
65°
53°
16
61°
49°
17
60°
48°
18
61°
49°
19
60°
49°
20
60°
53°
21
61°
47°
22
61°
48°
23
60°
48°
24
59°
47°
25
60°
48°
26
59°
46°
27
60°
51°
28
59°
46°
29
60°
50°
30
60°
52°
1
59°
50°
2
59°
45°
3
61°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Crescent City
Crescent City's September 2026 forecast shows daily high temperatures ranging from 59° to 71°, with overnight lows between 45° and 57°. The average high for September is 62° with an average low of 51°. 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 Crescent City. See also: October | November | December.