S
M
T
W
T
F
S
26
75°
57°
27
77°
56°
28
75°
56°
29
74°
55°
30
68°
56°
1
71°
57°
2
69°
57°
3
70°
55°
4
74°
53°
5
75°
55°
6
77°
58°
7
78°
58°
8
79°
59°
9
80°
60°
10
80°
60°
11
79°
59°
12
80°
60°
13
80°
61°
14
79°
60°
15
77°
57°
16
79°
57°
17
81°
60°
18
82°
55°
19
79°
54°
20
76°
55°
21
77°
56°
22
76°
60°
23
79°
63°
24
85°
63°
25
85°
64°
26
86°
64°
27
87°
65°
28
88°
65°
29
87°
66°
30
87°
60°
31
86°
59°
1
84°
65°
2
86°
66°
3
88°
66°
4
89°
65°
5
89°
59°
6
85°
59°
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 68° to 89°, with overnight lows between 53° and 66°. The average high for May is 80° with an average low of 59°. 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.
