S
M
T
W
T
F
S
30
83°
55°
31
N/A
1
90°
68°
2
88°
69°
3
93°
67°
4
86°
61°
5
80°
58°
6
78°
57°
7
80°
58°
8
75°
55°
9
80°
59°
10
82°
54°
11
77°
54°
12
75°
53°
13
75°
52°
14
77°
53°
15
76°
57°
16
73°
57°
17
74°
51°
18
71°
47°
19
70°
48°
20
73°
53°
21
78°
55°
22
78°
55°
23
79°
56°
24
79°
54°
25
77°
52°
26
76°
53°
27
77°
54°
28
76°
53°
29
77°
52°
30
72°
47°
1
68°
45°
2
70°
49°
3
74°
51°
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 68° to 93°, with overnight lows between 45° and 69°. The average high for September is 77° with an average low of 55°. 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.