S
M
T
W
T
F
S
26
89°
73°
27
91°
77°
28
84°
76°
29
77°
62°
30
65°
61°
1
62°
53°
2
78°
50°
3
82°
53°
4
83°
57°
5
86°
71°
6
77°
57°
7
72°
53°
8
77°
58°
9
93°
71°
10
85°
65°
11
80°
63°
12
86°
60°
13
93°
62°
14
92°
66°
15
88°
69°
16
90°
72°
17
91°
76°
18
94°
79°
19
88°
68°
20
86°
67°
21
83°
69°
22
88°
70°
23
86°
65°
24
91°
66°
25
88°
70°
26
88°
72°
27
77°
69°
28
83°
70°
29
83°
70°
30
92°
71°
31
87°
68°
1
82°
65°
2
80°
66°
3
83°
68°
4
85°
70°
5
87°
71°
6
88°
72°
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 77° to 92°, with overnight lows between 65° and 72°. The average high for May is 85° with an average low of 69°. 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.
