S
M
T
W
T
F
S
26
56°
31°
27
44°
35°
28
47°
29°
29
46°
28°
30
47°
26°
1
54°
25°
2
67°
32°
3
72°
33°
4
60°
30°
5
40°
31°
6
42°
30°
7
58°
26°
8
66°
31°
9
56°
37°
10
53°
31°
11
65°
32°
12
65°
39°
13
73°
34°
14
78°
55°
15
78°
48°
16
55°
38°
17
56°
39°
18
51°
39°
19
N/A
20
63°
43°
21
68°
46°
22
65°
47°
23
62°
47°
24
76°
54°
25
80°
59°
26
81°
58°
27
75°
56°
28
74°
55°
29
77°
57°
30
75°
58°
31
75°
57°
1
77°
59°
2
72°
50°
3
77°
56°
4
75°
53°
5
67°
48°
6
67°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
May Weather in Riverland
Riverland's May 2026 forecast shows daily high temperatures ranging from 62° to 81°, with overnight lows between 43° and 59°. The average high for May is 73° with an average low of 53°. 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 Riverland. See also: June | July | August.