S
M
T
W
T
F
S
30
71°
48°
31
70°
48°
1
70°
51°
2
71°
51°
3
70°
52°
4
70°
51°
5
72°
48°
6
71°
49°
7
69°
47°
8
70°
46°
9
69°
52°
10
70°
46°
11
67°
46°
12
71°
45°
13
72°
53°
14
74°
48°
15
72°
52°
16
74°
52°
17
74°
53°
18
75°
52°
19
74°
51°
20
74°
48°
21
67°
51°
22
66°
46°
23
67°
49°
24
66°
47°
25
63°
44°
26
69°
40°
27
69°
42°
28
59°
41°
29
58°
43°
30
58°
39°
1
Hist. Avg.
63°
44°
2
Hist. Avg.
63°
43°
3
Hist. Avg.
62°
43°
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 58° to 75°, with overnight lows between 39° and 53°. The average high for September is 69° with an average low of 48°. 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.