S
M
T
W
T
F
S
1
56°
37°
2
57°
36°
3
53°
47°
4
52°
46°
5
51°
44°
6
50°
43°
7
54°
48°
8
53°
40°
9
47°
37°
10
48°
35°
11
52°
40°
12
47°
34°
13
35°
32°
14
46°
33°
15
49°
34°
16
56°
42°
17
53°
48°
18
57°
50°
19
54°
49°
20
58°
45°
21
52°
41°
22
52°
36°
23
50°
36°
24
54°
43°
25
52°
39°
26
53°
35°
27
58°
35°
28
57°
41°
29
46°
35°
30
50°
32°
31
58°
38°
1
49°
42°
2
54°
41°
3
60°
42°
4
63°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
March Weather in Seattle
Seattle's March 2026 forecast shows daily high temperatures ranging from 60° to 63°, with overnight lows between 42° and 47°. The average high for March is 62° with an average low of 45°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how March weather will actually feel in Seattle. See also: April | May | June.
