S
M
T
W
T
F
S
26
49°
34°
27
42°
30°
28
50°
31°
29
54°
28°
30
50°
30°
1
59°
28°
2
68°
32°
3
70°
36°
4
71°
40°
5
51°
28°
6
55°
26°
7
68°
42°
8
69°
45°
9
69°
44°
10
74°
36°
11
83°
46°
12
85°
50°
13
82°
47°
14
70°
42°
15
72°
40°
16
66°
37°
17
47°
33°
18
36°
29°
19
46°
23°
20
60°
31°
21
56°
36°
22
59°
34°
23
70°
47°
24
73°
45°
25
70°
48°
26
64°
43°
27
67°
39°
28
71°
39°
29
68°
41°
30
70°
44°
31
72°
42°
1
71°
44°
2
73°
45°
3
74°
46°
4
69°
38°
5
70°
43°
6
67°
41°
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 59° to 74°, with overnight lows between 34° and 48°. The average high for May is 69° with an average low of 42°. 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.
