S
M
T
W
T
F
S
1
41°
23°
2
45°
28°
3
61°
30°
4
64°
32°
5
66°
30°
6
55°
30°
7
59°
24°
8
77°
27°
9
78°
34°
10
61°
33°
11
51°
20°
12
78°
23°
13
57°
26°
14
73°
30°
15
63°
10°
16
38°
5°
17
67°
27°
18
82°
40°
19
87°
36°
20
89°
39°
21
97°
38°
22
62°
32°
23
57°
29°
24
77°
32°
25
92°
47°
26
65°
36°
27
54°
28°
28
68°
33°
29
89°
46°
30
88°
38°
31
58°
39°
1
48°
35°
2
62°
38°
3
61°
35°
4
56°
32°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
March Weather in Sumner
Sumner's March 2026 forecast shows daily high temperatures ranging from 56° to 56°, with overnight lows between 32° and 32°. The average high for March is 56° with an average low of 32°. 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 Sumner. See also: April | May | June.