S
M
T
W
T
F
S
26
76°
57°
27
71°
51°
28
66°
51°
29
80°
58°
30
75°
52°
1
67°
51°
2
64°
45°
3
69°
39°
4
77°
42°
5
78°
55°
6
73°
60°
7
74°
51°
8
69°
46°
9
74°
51°
10
83°
55°
11
67°
48°
12
72°
43°
13
77°
45°
14
71°
49°
15
75°
43°
16
84°
48°
17
89°
58°
18
89°
64°
19
92°
64°
20
94°
67°
21
89°
61°
22
69°
62°
23
76°
64°
24
80°
66°
25
81°
67°
26
80°
69°
27
81°
66°
28
80°
67°
29
80°
63°
30
77°
64°
31
80°
64°
1
82°
61°
2
84°
64°
3
83°
65°
4
79°
65°
5
78°
62°
6
82°
65°
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 94°, with overnight lows between 61° and 69°. The average high for May is 81° with an average low of 65°. 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.
