S
M
T
W
T
F
S
26
61°
42°
27
60°
41°
28
49°
37°
29
62°
32°
30
55°
34°
1
57°
33°
2
69°
27°
3
75°
44°
4
75°
42°
5
57°
41°
6
61°
31°
7
70°
44°
8
78°
49°
9
76°
38°
10
73°
35°
11
84°
41°
12
78°
46°
13
80°
38°
14
83°
58°
15
94°
52°
16
86°
54°
17
83°
55°
18
54°
48°
19
61°
42°
20
59°
38°
21
67°
47°
22
71°
52°
23
75°
51°
24
84°
61°
25
90°
61°
26
86°
60°
27
81°
60°
28
77°
60°
29
75°
55°
30
76°
53°
31
78°
60°
1
80°
60°
2
78°
59°
3
79°
57°
4
72°
62°
5
76°
63°
6
75°
64°
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 72° to 90°, with overnight lows between 51° and 64°. The average high for May is 79° with an average low of 59°. 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.
