May weather forecastProsser, WA
May
Weather in May
May, the last month of the spring in Prosser, is an agreeable month, with an average temperature ranging between min 50.2°F (10.1°C) and max 71.8°F (22.1°C).Temperature
Prosser's weather in May presents a rise in the average high-temperature, moving from a refreshing 62.2°F (16.8°C) in April to a pleasant 71.8°F (22.1°C). May nights are characterized by a significant departure from the daytime highs, dropping to an average temperature of 50.2°F (10.1°C).Humidity
The average relative humidity in May is 49%.Rainfall
In May, the rain falls for 9.3 days. Throughout May, 0.83" (21mm) of precipitation is accumulated. Throughout the year, there are 97.8 rainfall days, and 7.44" (189mm) of precipitation is accumulated.Snowfall
In Prosser, snow does not fall in April through August and October.Daylight
The average length of the day in May is 15h and 0min.On the first day of May in Prosser, sunrise is at 5:43 am and sunset at 8:08 pm. On the last day of the month, sunrise is at 5:10 am and sunset at 8:42 pm PDT.
Sunshine
In May, the average sunshine is 11h.UV index
The average daily maximum UV index in May in Prosser, Washington, is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: An average UV index of 5 in May transforms into this advice:
Preventative actions are necessary - The mandate to avoid skin and eye damage is in place. When the Sun is at its strongest around midday, find shade and limit exposure. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Prosser, WA
- Average high temperature in May: 71.8°F
The warmest month (with the highest average high temperature) is July (88.3°F).
The month with the lowest average high temperature is December (37.2°F).
- Average low temperature in May: 50.2°F
The month with the highest average low temperature is August (63.1°F).
The coldest month (with the lowest average low temperature) is December (27°F).
Average pressure in May
Prosser, WA
- Average pressure in May: 29.95"Hg
The month with the highest atmospheric pressure is January (30.18"Hg).
The month with the lowest atmospheric pressure is August (29.91"Hg).
Average wind speed in May
Prosser, WA
- Average wind speed in May: 7.6mph
The windiest month (with the highest average wind speed) is April (8.6mph).
The calmest month (with the lowest average wind speed) is December (5.6mph).
Average humidity in May
Prosser, WA
- Average humidity in May: 49%
The month with the highest relative humidity is January (81%).
The months with the lowest relative humidity are July and August (37%).
Average rainfall in May
Prosser, WA
- Average rainfall in May: 0.83"
The wettest months (with the highest rainfall) are January and December (0.94").
The driest month (with the least rainfall) is July (0.2").
Average rainfall days in May
Prosser, WA
- Average rainfall days in May: 9.3 days
The month with the highest number of rainy days is March (11.8 days).
The month with the least rainy days is July (3.6 days).
Average snowfall in May
Prosser, WA
- Average snowfall in May: 0"
The month with the highest snowfall is February (2.01").
The months with the least snowfall are April, May, June, July, August and October (0").
Average snowfall days in May
Prosser, WA
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is December (4.6 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
Prosser, 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 0min
The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 5h and 12min).
Average sunshine days in May
Prosser, WA
- Average sunshine days in May: 19.4 days
The month with the most sunshine days is July (25.8 days).
The month with the least sunshine days is February (15.5 days).
Average UV index in May
Prosser, 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
Prosser, WA
- Average cloud cover in May: 26
The month with the most cloud cover is January (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 9).
Average visibility in May
Prosser, WA
- Average visibility in May: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
