S
M
T
W
T
F
S
26
69°
45°
27
68°
48°
28
60°
47°
29
53°
42°
30
53°
35°
1
50°
33°
2
51°
30°
3
64°
37°
4
77°
44°
5
59°
45°
6
56°
37°
7
57°
35°
8
65°
35°
9
70°
46°
10
61°
36°
11
62°
38°
12
63°
32°
13
62°
38°
14
67°
38°
15
69°
39°
16
82°
55°
17
85°
58°
18
84°
66°
19
82°
58°
20
66°
49°
21
67°
46°
22
73°
47°
23
60°
54°
24
69°
48°
25
81°
53°
26
83°
60°
27
82°
56°
28
80°
53°
29
78°
52°
30
77°
54°
31
78°
53°
1
77°
55°
2
79°
58°
3
78°
57°
4
77°
58°
5
80°
56°
6
79°
55°
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 69° to 83°, with overnight lows between 48° and 60°. The average high for May is 78° with an average low of 55°. 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.
