S
M
T
W
T
F
S
30
69°
41°
31
70°
44°
1
68°
45°
2
69°
41°
3
69°
41°
4
71°
43°
5
68°
41°
6
67°
40°
7
68°
40°
8
75°
41°
9
76°
44°
10
76°
47°
11
75°
46°
12
77°
48°
13
76°
48°
14
74°
38°
15
71°
40°
16
69°
46°
17
75°
47°
18
76°
41°
19
75°
44°
20
74°
45°
21
70°
46°
22
74°
46°
23
74°
43°
24
72°
45°
25
72°
48°
26
73°
48°
27
74°
45°
28
64°
42°
29
63°
43°
30
63°
43°
1
64°
41°
2
61°
37°
3
60°
39°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Coast Range
Coast Range's September 2026 forecast shows daily high temperatures ranging from 60° to 77°, with overnight lows between 37° and 48°. The average high for September is 71° with an average low of 43°. 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 Coast Range. See also: October | November | December.