The Weather Network
Weather
Maps
News
Video
|
Welcome
Monthly
⋮
Current
Hourly
7 Days
14 Days
Weekend
Monthly
Precipitation
Temperature
Wind
Temperature Unit Selection
°Celsius
°Fahrenheit
Monthly Historical Averages
Sunnyside, WA
Content continues below
May
Average Temperature
High
23°
Feels 23
Low
9°
Feels 8
Average Precipitation
6 Days
Rain amount
32.3mm
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
19
20
24°
21
25°
22
28°
23
31°
24
29°
25
32°
26
18°
27
24°
28
24°
29
24°
30
24°
31
24°
Forecast
Wednesday, May 20, 2026
Day
24°
Feels 24
Wind
11 km/h W
Gust
17 km/h
Humidity
25%
P.O.P
20%
Night
10°
Feels 9
Wind
10 km/h NW
Gust
15 km/h
Humidity
62%
P.O.P
20%
Historical Averages
May 20
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.