S
M
T
W
T
F
S
30
68°
48°
31
69°
55°
1
75°
56°
2
78°
50°
3
79°
55°
4
77°
47°
5
68°
48°
6
70°
52°
7
75°
54°
8
68°
49°
9
67°
51°
10
66°
52°
11
67°
51°
12
66°
50°
13
66°
49°
14
68°
50°
15
74°
52°
16
74°
45°
17
69°
45°
18
68°
44°
19
73°
49°
20
72°
53°
21
67°
45°
22
64°
46°
23
63°
45°
24
63°
43°
25
64°
43°
26
64°
42°
27
63°
51°
28
63°
50°
29
62°
46°
30
64°
49°
1
68°
51°
2
65°
48°
3
65°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Everett
Everett's September 2026 forecast shows daily high temperatures ranging from 62° to 79°, with overnight lows between 42° and 56°. The average high for September is 68° with an average low of 49°. 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 Everett. See also: October | November | December.