S
M
T
W
T
F
S
26
80°
58°
27
77°
57°
28
73°
57°
29
69°
56°
30
70°
57°
1
71°
56°
2
69°
57°
3
70°
58°
4
71°
58°
5
73°
59°
6
73°
60°
7
74°
60°
8
73°
59°
9
75°
61°
10
74°
61°
11
75°
60°
12
78°
61°
13
81°
61°
14
80°
62°
15
79°
62°
16
80°
61°
17
79°
62°
18
83°
58°
19
83°
60°
20
79°
59°
21
78°
63°
22
80°
64°
23
88°
63°
24
88°
65°
25
87°
65°
26
88°
66°
27
90°
66°
28
90°
67°
29
89°
66°
30
91°
62°
31
87°
67°
1
87°
67°
2
91°
68°
3
91°
68°
4
92°
69°
5
93°
60°
6
93°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Mountain View
Mountain View's May 2026 forecast shows daily high temperatures ranging from 69° to 93°, with overnight lows between 56° and 69°. The average high for May is 81° with an average low of 62°. 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 Mountain View. See also: June | July | August.
