S
M
T
W
T
F
S
26
56°
41°
27
71°
36°
28
56°
42°
29
58°
48°
30
61°
43°
1
62°
36°
2
55°
41°
3
60°
42°
4
73°
35°
5
81°
50°
6
68°
53°
7
64°
49°
8
64°
39°
9
62°
47°
10
67°
46°
11
63°
45°
12
67°
37°
13
67°
51°
14
55°
47°
15
70°
47°
16
81°
44°
17
85°
62°
18
95°
65°
19
98°
68°
20
88°
54°
21
68°
49°
22
63°
51°
23
57°
53°
24
66°
57°
25
74°
59°
26
76°
57°
27
76°
58°
28
77°
58°
29
77°
59°
30
78°
57°
31
81°
55°
1
78°
59°
2
74°
60°
3
71°
60°
4
73°
59°
5
75°
58°
6
74°
60°
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 57° to 98°, with overnight lows between 49° and 68°. The average high for May is 76° with an average low of 58°. 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.
