S
M
T
W
T
F
S
30
78°
48°
31
N/A
1
75°
55°
2
68°
49°
3
62°
48°
4
67°
49°
5
68°
48°
6
72°
48°
7
69°
49°
8
71°
50°
9
75°
52°
10
75°
51°
11
74°
52°
12
72°
49°
13
72°
48°
14
71°
49°
15
74°
49°
16
65°
46°
17
64°
47°
18
64°
43°
19
65°
48°
20
63°
45°
21
62°
42°
22
63°
42°
23
62°
43°
24
61°
41°
25
62°
41°
26
67°
43°
27
69°
50°
28
62°
47°
29
61°
43°
30
68°
46°
1
66°
49°
2
60°
48°
3
61°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Skykomish
Skykomish's September 2026 forecast shows daily high temperatures ranging from 60° to 75°, with overnight lows between 41° and 55°. The average high for September is 67° with an average low of 47°. 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 Skykomish. See also: October | November | December.
