S
M
T
W
T
F
S
26
86°
63°
27
88°
63°
28
68°
54°
29
68°
46°
30
70°
46°
1
70°
45°
2
73°
51°
3
85°
61°
4
90°
62°
5
69°
45°
6
59°
41°
7
79°
56°
8
89°
58°
9
89°
64°
10
82°
56°
11
77°
57°
12
86°
65°
13
87°
62°
14
86°
61°
15
80°
58°
16
78°
63°
17
75°
62°
18
79°
63°
19
81°
63°
20
76°
59°
21
83°
57°
22
75°
55°
23
75°
59°
24
76°
58°
25
75°
57°
26
76°
56°
27
77°
60°
28
78°
62°
29
79°
62°
30
80°
66°
31
79°
65°
1
79°
60°
2
80°
65°
3
84°
68°
4
85°
68°
5
81°
67°
6
81°
68°
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 59° to 90°, with overnight lows between 41° and 68°. The average high for May is 80° with an average low of 60°. 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.
