May weather forecastSouth Prairie, WA
May
Weather in May
The last month of the spring, May, is a refreshing month in South Prairie, Washington, with temperature in the range of an average low of 40.6°F (4.8°C) and an average high of 60.6°F (15.9°C).Temperature
The commencement of May sees a minor shift in the average high-temperature, moving from a fresh 51.8°F (11°C) in April to a refreshing 60.6°F (15.9°C). During May, an average low-temperature of 40.6°F (4.8°C) is observed.Humidity
In May, the average relative humidity in South Prairie is 78%.Rainfall
In May, the rain falls for 14.9 days. Throughout May, 2.44" (62mm) of precipitation is accumulated. In South Prairie, during the entire year, the rain falls for 189.1 days and collects up to 41.93" (1065mm) of precipitation.Snowfall
May through October are months without snowfall.Daylight
In May, the average length of the day in South Prairie is 15h and 7min.On the first day of May, sunrise is at 5:50 am and sunset at 8:19 pm. On the last day of the month, sunrise is at 5:16 am and sunset at 8:55 pm PDT.
Sunshine
In South Prairie, Washington, the average sunshine in May is 8.5h.UV index
In May, the average daily maximum UV index in South Prairie is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for the average person.Note: In May, the maximum UV index of 4 translates into these guidelines:
Adopt protective measures - Suggestions to resist sunburn are offered. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. During bright days, sunglasses that offer UVA and UVB defense are recommended. Be prepared! The intensity of the Sun's UV radiation can be amplified nearly double due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
South Prairie, WA
- Average high temperature in May: 60.6°F
The warmest month (with the highest average high temperature) is August (74.1°F).
The month with the lowest average high temperature is December (39.9°F).
- Average low temperature in May: 40.6°F
The month with the highest average low temperature is August (49.3°F).
The coldest month (with the lowest average low temperature) is December (29.8°F).
Average pressure in May
South Prairie, WA
- Average pressure in May: 30.01"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is August (29.99"Hg).
Average wind speed in May
South Prairie, WA
- Average wind speed in May: 3.9mph
The windiest month (with the highest average wind speed) is January (5.3mph).
The calmest month (with the lowest average wind speed) is August (3.6mph).
Average humidity in May
South Prairie, WA
- Average humidity in May: 78%
The months with the highest relative humidity are January and February (87%).
The month with the lowest relative humidity is July (70%).
Average rainfall in May
South Prairie, WA
- Average rainfall in May: 2.44"
The wettest months (with the highest rainfall) are January and December (6.1").
The driest month (with the least rainfall) is July (0.63").
Average rainfall days in May
South Prairie, WA
- Average rainfall days in May: 14.9 days
The month with the highest number of rainy days is March (21.2 days).
The month with the least rainy days is August (7.6 days).
Average snowfall in May
South Prairie, WA
- Average snowfall in May: 0"
The month with the highest snowfall is February (5.2").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in May
South Prairie, WA
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is February (6.3 days).
The months with the least snowfall days are June, July, August and October (0 days).
Average daylight in May /
Average sunshine in May
South Prairie, WA
- Average daylight in May: 15h and 6min
The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 36min).
- Average sunshine in May: 8h and 30min
The month with the most sunshine is August (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 4h and 0min).
Average sunshine days in May
South Prairie, WA
- Average sunshine days in May: 13.5 days
The month with the most sunshine days is July (21.2 days).
The month with the least sunshine days is March (7.8 days).
Average UV index in May
South Prairie, WA
- Average UV index in May: 4
The month with the highest UV index is July (UV index 5).
The month with the lowest UV index is November (UV index 1).
Average cloud cover in May
South Prairie, WA
- Average cloud cover in May: 48
The month with the most cloud cover is March (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in May
South Prairie, WA
- Average visibility in May: 5mi
The months with the highest visibility are April, May, June, July, August, September and October (5mi).
The months with the lowest visibility are January, February, March, November and December (4mi).
