Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average snowfall in May
- Average snowfall days in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
Weather in May
Temperature
May comes with an increase, with the average high-temperature moving from a moderate 59.5°F (15.3°C) in April to an agreeable 69.4°F (20.8°C). In May, Zillah endures a notable temperature shift from day to night, with lows averaging at a frosty 47.8°F (8.8°C).Humidity
The average relative humidity in May in Zillah, Washington, is 50%.Rainfall
In Zillah, during May, the rain falls for 8.9 days and regularly aggregates up to 0.94" (24mm) of precipitation. Throughout the year, there are 98.5 rainfall days, and 6.97" (177mm) of precipitation is accumulated.Snowfall
April through August and October are months without snowfall in Zillah, Washington.Daylight
In May, the average length of the day in Zillah, Washington, is 15h and 1min.On the first day of the month, sunrise is at 5:45 am and sunset at 8:10 pm. On the last day of May, sunrise is at 5:12 am and sunset at 8:45 pm PDT.
Sunshine
The average sunshine in May is 11.3h.UV index
The average daily maximum UV index in May in Zillah is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for the average person.Note: The daily high UV index of 5 during May translates into the following recommendations:
Act with care - The need to guard against sun damage is communicated. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in May in Zillah?
What is the average humidity in May in Zillah?
How much does it rain in Zillah in May?
When it does not snow in Zillah?
What is the average length of the day in May in Zillah?
What time are sunrise and sunset in May in Zillah?
How long on average sun shines in May in Zillah?
How high is the UV index in May in Zillah?
Average temperature in May
Zillah, WA
- Average high temperature in May: 69.4°F
The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is December (36.7°F).
- Average low temperature in May: 47.8°F
The month with the highest average low temperature is August (60.8°F).
The coldest month (with the lowest average low temperature) is December (25.7°F).
Average pressure in May
Zillah, WA
- Average pressure in May: 29.96"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is August (29.93"Hg).
Average wind speed in May
Zillah, WA
- Average wind speed in May: 7mph
The windiest month (with the highest average wind speed) is April (7.5mph).
The calmest month (with the lowest average wind speed) is December (4.7mph).
Average humidity in May
Zillah, WA
- Average humidity in May: 50%
The month with the highest relative humidity is January (82%).
The month with the lowest relative humidity is July (38%).
Average rainfall in May
Zillah, WA
- Average rainfall in May: 0.94"
The wettest month (with the highest rainfall) is January (1.02").
The driest month (with the least rainfall) is July (0.16").
Average rainfall days in May
Zillah, WA
- Average rainfall days in May: 8.9 days
The month with the highest number of rainy days is March (12.1 days).
The month with the least rainy days is July (3.5 days).
Average snowfall in May
Zillah, WA
- Average snowfall in May: 0"
The month with the highest snowfall is February (2.4").
The months with the least snowfall are April, May, June, July, August and October (0").
Average snowfall days in May
Zillah, WA
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is December (5 days).
The months with the least snowfall days are April, May, June, July, August and October (0 days).
Average daylight in May /
Average sunshine in May
Zillah, WA
- Average daylight in May: 15h and 0min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in May: 11h and 2min
The months with the most sunshine are July and August (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 5h and 30min).
Average sunshine days in May
Zillah, WA
- Average sunshine days in May: 19.7 days
The month with the most sunshine days is July (25.8 days).
The month with the least sunshine days is February (14.6 days).
Average UV index in May
Zillah, WA
- Average UV index in May: 5
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in May
Zillah, WA
- Average cloud cover in May: 23
The month with the most cloud cover is January (Cloud cover 42).
The month with the least cloud cover is July (Cloud cover 9).
Average visibility in May
Zillah, WA
- Average visibility in May: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
Zillah, Washington, USA
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