S
M
T
W
T
F
S
1
54°
35°
2
55°
46°
3
60°
40°
4
57°
49°
5
59°
49°
6
56°
44°
7
55°
48°
8
56°
46°
9
55°
46°
10
57°
47°
11
57°
48°
12
56°
46°
13
52°
38°
14
54°
43°
15
48°
41°
16
53°
42°
17
48°
39°
18
46°
36°
19
46°
37°
20
47°
43°
21
54°
43°
22
53°
40°
23
48°
36°
24
47°
34°
25
44°
33°
26
44°
33°
27
45°
39°
28
44°
35°
29
43°
32°
30
42°
32°
1
43°
39°
2
48°
42°
3
48°
39°
4
46°
37°
5
46°
34°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
November Weather in Mercer Island
Mercer Island's November 2026 forecast shows daily high temperatures ranging from 42° to 60°, with overnight lows between 32° and 49°. The average high for November is 50° with an average low of 40°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how November weather will actually feel in Mercer Island. See also: December | January | February.
