S
M
T
W
T
F
S
26
29°
12°
27
35°
21°
28
51°
19°
29
48°
26°
30
56°
28°
1
67°
30°
2
63°
43°
3
74°
36°
4
44°
30°
5
45°
28°
6
54°
20°
7
64°
29°
8
67°
36°
9
60°
32°
10
70°
35°
11
73°
44°
12
71°
45°
13
82°
44°
14
64°
43°
15
61°
38°
16
60°
35°
17
43°
32°
18
46°
30°
19
62°
29°
20
62°
39°
21
58°
40°
22
61°
41°
23
73°
49°
24
80°
52°
25
87°
56°
26
92°
62°
27
87°
62°
28
87°
56°
29
79°
54°
30
80°
53°
31
77°
50°
1
76°
51°
2
75°
50°
3
76°
50°
4
76°
47°
5
71°
43°
6
75°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Richland
Richland's May 2026 forecast shows daily high temperatures ranging from 71° to 92°, with overnight lows between 43° and 62°. The average high for May is 79° 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 Richland. See also: June | July | August.
