S
M
T
W
T
F
S
26
81°
57°
27
77°
53°
28
68°
47°
29
69°
50°
30
64°
44°
1
57°
42°
2
60°
42°
3
63°
46°
4
66°
49°
5
65°
48°
6
64°
49°
7
63°
47°
8
65°
44°
9
65°
45°
10
66°
46°
11
68°
55°
12
69°
56°
13
76°
53°
14
67°
49°
15
66°
47°
16
66°
46°
17
67°
48°
18
68°
53°
19
66°
51°
20
68°
49°
21
68°
48°
22
69°
51°
23
71°
56°
24
74°
54°
25
70°
51°
26
70°
51°
27
71°
54°
28
72°
59°
29
72°
60°
30
73°
59°
31
72°
58°
1
73°
59°
2
73°
56°
3
75°
55°
4
77°
60°
5
83°
62°
6
83°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Modesto
Modesto's May 2026 forecast shows daily high temperatures ranging from 57° to 83°, with overnight lows between 42° and 62°. The average high for May is 70° with an average low of 52°. 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 Modesto. See also: June | July | August.