S
M
T
W
T
F
S
26
68°
32°
27
73°
32°
28
67°
36°
29
63°
44°
30
53°
44°
1
62°
39°
2
53°
41°
3
53°
31°
4
74°
47°
5
79°
58°
6
68°
52°
7
64°
44°
8
60°
39°
9
60°
43°
10
65°
46°
11
61°
44°
12
62°
43°
13
64°
48°
14
65°
46°
15
60°
47°
16
65°
47°
17
66°
46°
18
72°
51°
19
72°
50°
20
69°
50°
21
70°
51°
22
70°
51°
23
66°
46°
24
63°
45°
25
65°
45°
26
66°
52°
27
66°
48°
28
67°
46°
29
66°
46°
30
66°
47°
31
68°
54°
1
70°
50°
2
68°
47°
3
69°
54°
4
73°
55°
5
70°
54°
6
71°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Riverdale
Riverdale's May 2026 forecast shows daily high temperatures ranging from 60° to 79°, with overnight lows between 39° and 58°. The average high for May is 67° with an average low of 48°. 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 Riverdale. See also: June | July | August.
