S
M
T
W
T
F
S
30
79°
53°
31
77°
53°
1
77°
54°
2
78°
55°
3
77°
59°
4
78°
53°
5
79°
54°
6
78°
53°
7
77°
51°
8
76°
52°
9
76°
54°
10
77°
52°
11
75°
50°
12
75°
50°
13
76°
51°
14
76°
52°
15
77°
56°
16
80°
55°
17
79°
50°
18
73°
47°
19
74°
51°
20
75°
50°
21
72°
48°
22
72°
51°
23
75°
52°
24
76°
53°
25
77°
52°
26
76°
44°
27
72°
44°
28
68°
45°
29
67°
45°
30
68°
43°
1
67°
44°
2
Hist. Avg.
68°
48°
3
Hist. Avg.
68°
47°
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 67° to 80°, with overnight lows between 43° and 59°. The average high for September is 75° 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 Everett. See also: October | November | December.