S
M
T
W
T
F
S
26
84°
64°
27
87°
69°
28
86°
70°
29
79°
65°
30
68°
58°
1
59°
52°
2
71°
51°
3
76°
47°
4
78°
51°
5
78°
57°
6
81°
59°
7
73°
57°
8
68°
59°
9
76°
63°
10
83°
62°
11
78°
65°
12
83°
62°
13
83°
58°
14
82°
62°
15
88°
59°
16
85°
69°
17
84°
70°
18
87°
73°
19
87°
69°
20
82°
69°
21
82°
68°
22
83°
69°
23
81°
69°
24
82°
66°
25
83°
68°
26
84°
69°
27
86°
67°
28
83°
66°
29
81°
67°
30
88°
65°
31
87°
69°
1
89°
69°
2
89°
68°
3
84°
69°
4
84°
66°
5
85°
68°
6
86°
70°
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 81° to 89°, with overnight lows between 65° and 73°. The average high for May is 85° with an average low of 68°. 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.
