May weather forecastRuston, WA
May
Weather in May
The last month of the spring, May, is a refreshing month in Ruston, Washington, with an average temperature varying between 65.8°F (18.8°C) and 43.5°F (6.4°C).Temperature
Ruston's transition into May sees a mild rise in the average high-temperature, edging from 57.2°F (14°C) in April to a still refreshing 65.8°F (18.8°C). A noticeable downturn in temperature characterizes the May nights, averaging at a chilly 43.5°F (6.4°C).Humidity
In Ruston, the average relative humidity in May is 74%.Rainfall
In May, the rain falls for 13.3 days. Throughout May, 1.57" (40mm) of precipitation is accumulated. In Ruston, during the entire year, the rain falls for 172.9 days and collects up to 30.08" (764mm) of precipitation.Snowfall
April through October are months without snowfall in Ruston.Daylight
In May, the average length of the day is 15h and 7min.On the first day of the month, sunrise is at 5:52 am and sunset at 8:22 pm. On the last day of May, sunrise is at 5:17 am and sunset at 8:58 pm PDT.
Sunshine
In Ruston, the average sunshine in May is 8.8h.UV index
The average daily maximum UV index in May is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: In May, a daily UV index of 4 turns into the following recommendations:
Be mindful. Individuals with a lighter skin tone may suffer burns in less than 30 minutes. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Ruston, WA
- Average high temperature in May: 65.8°F
The warmest month (with the highest average high temperature) is August (78.1°F).
The month with the lowest average high temperature is December (43.7°F).
- Average low temperature in May: 43.5°F
The month with the highest average low temperature is August (52.7°F).
The coldest months (with the lowest average low temperature) are February and December (34.3°F).
Average pressure in May
Ruston, WA
- Average pressure in May: 30.03"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The months with the lowest atmospheric pressure are March, August and September (30.01"Hg).
Average wind speed in May
Ruston, WA
- Average wind speed in May: 4.3mph
The windiest month (with the highest average wind speed) is March (5.2mph).
The calmest month (with the lowest average wind speed) is August (3.7mph).
Average humidity in May
Ruston, WA
- Average humidity in May: 74%
The months with the highest relative humidity are January and December (87%).
The month with the lowest relative humidity is July (68%).
Average rainfall in May
Ruston, WA
- Average rainfall in May: 1.57"
The wettest month (with the highest rainfall) is December (4.69").
The driest month (with the least rainfall) is July (0.39").
Average rainfall days in May
Ruston, WA
- Average rainfall days in May: 13.3 days
The month with the highest number of rainy days is March (20.1 days).
The month with the least rainy days is August (5 days).
Average snowfall in May
Ruston, WA
- Average snowfall in May: 0"
The month with the highest snowfall is February (2.28").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in May
Ruston, WA
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is February (3.2 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in May /
Average sunshine in May
Ruston, 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 30min).
- Average sunshine in May: 8h and 48min
The month with the most sunshine is August (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 4h and 0min).
Average sunshine days in May
Ruston, WA
- Average sunshine days in May: 15.5 days
The month with the most sunshine days is August (23.4 days).
The month with the least sunshine days is February (9 days).
Average UV index in May
Ruston, WA
- Average UV index in May: 4
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in May
Ruston, WA
- Average cloud cover in May: 45
The month with the most cloud cover is December (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in May
Ruston, WA
- Average visibility in May: 5mi
The months with the highest visibility are June, July and August (6mi).
The months with the lowest visibility are January, February, March, April, May, September, October, November and December (5mi).
