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7 Days
14 Days
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Monthly
Precipitation
Temperature
Wind
Temperature Unit Selection
°Celsius
°Fahrenheit
Monthly Historical Averages
West Richland, WA
Content continues below
May
Average Temperature
High
24°
Feels 24
Low
10°
Feels 8
Average Precipitation
5 Days
Rain amount
14.8mm
Snow amount
0cm
Content continues below
Daily Historical Averages
May 2026
S
M
T
W
T
F
S
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
24°
19
25°
20
26°
21
27°
22
30°
23
31°
24
28°
25
24°
26
24°
27
25°
28
21°
29
22°
30
24°
31
27°
Forecast
Monday, May 18, 2026
Day
24°
Feels 24
Wind
10 km/h NW
Gust
15 km/h
Humidity
16%
P.O.P
20%
Night
8°
Feels 6
Wind
14 km/h W
Gust
21 km/h
Humidity
66%
P.O.P
10%
Historical Averages
May 18
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.