S
M
T
W
T
F
S
26
67°
48°
27
69°
48°
28
70°
46°
29
72°
46°
30
70°
51°
1
73°
51°
2
71°
57°
3
69°
59°
4
68°
53°
5
67°
51°
6
71°
50°
7
72°
51°
8
76°
60°
9
76°
56°
10
75°
52°
11
80°
52°
12
69°
53°
13
73°
56°
14
72°
58°
15
74°
61°
16
73°
57°
17
71°
52°
18
71°
51°
19
78°
47°
20
81°
50°
21
76°
57°
22
72°
59°
23
71°
59°
24
68°
61°
25
70°
59°
26
66°
55°
27
66°
54°
28
67°
55°
29
70°
55°
30
72°
56°
31
76°
57°
1
76°
57°
2
76°
59°
3
80°
61°
4
79°
61°
5
74°
61°
6
73°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Rancho Penasquitos
Rancho Penasquitos's May 2026 forecast shows daily high temperatures ranging from 66° to 80°, with overnight lows between 54° and 61°. The average high for May is 73° with an average low of 57°. 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 Rancho Penasquitos. See also: June | July | August.
