S
M
T
W
T
F
S
26
67°
50°
27
70°
46°
28
75°
48°
29
81°
48°
30
86°
51°
1
84°
54°
2
77°
55°
3
69°
54°
4
62°
53°
5
68°
53°
6
74°
59°
7
83°
56°
8
86°
55°
9
88°
58°
10
88°
58°
11
93°
57°
12
93°
59°
13
82°
57°
14
90°
54°
15
90°
57°
16
82°
63°
17
78°
59°
18
85°
53°
19
89°
54°
20
91°
53°
21
92°
57°
22
92°
60°
23
86°
56°
24
86°
55°
25
76°
54°
26
72°
54°
27
71°
52°
28
75°
58°
29
75°
53°
30
85°
55°
31
90°
59°
1
93°
61°
2
101°
63°
3
96°
64°
4
97°
63°
5
92°
61°
6
91°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Marysville
Marysville's May 2026 forecast shows daily high temperatures ranging from 75° to 101°, with overnight lows between 53° and 64°. The average high for May is 90° with an average low of 60°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Marysville. See also: June | July | August.