May weather forecastBeaverton, OR
May
Weather in May
By May, Beaverton sinks into the essence of spring with even warmer temperatures. Rainfall plummets to 1.69" (43mm), the first notable decrease since the start of the year, making it the driest month yet. It’s the beginning of a dry spell as the frequency of rainy days reduces significantly. This dwindling rainfall is accompanied by an increase in sunshine and daylight hours, thus amplifying the cheerfulness of the month. Through and through May is a breath of fresh air with its clear skies, warm days and mild winds.Temperature
The transition to May introduces an increase in the average high-temperature, shifting from a moderate 58.6°F (14.8°C) in April to a still refreshing 67.6°F (19.8°C). In the face of high daytime temperatures, Beaverton witnesses a consistent average nighttime low of 44.6°F (7°C) during May.Humidity
In Beaverton, the average relative humidity in May is 72%.Rainfall
In Beaverton, during May, the rain falls for 13.8 days and regularly aggregates up to 1.69" (43mm) of precipitation. Throughout the year, there are 173.2 rainfall days, and 30.55" (776mm) of precipitation is accumulated.Snowfall
April through October are months without snowfall.Daylight
In Beaverton, the average length of the day in May is 14h and 56min.On the first day of the month, sunrise is at 5:57 am and sunset at 8:18 pm. On the last day of May, sunrise is at 5:25 am and sunset at 8:52 pm PDT.
Sunshine
The average sunshine in May is 8.7h.UV index
In Beaverton, the average daily maximum UV index in May is 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for the average person.Note: The daily maximum UV index of 4 in May interprets into the following advice:
Preventative actions are necessary - Recommendations to ward off sunburn are given. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Beaverton, OR
- Average high temperature in May: 67.6°F
The warmest month (with the highest average high temperature) is August (81.7°F).
The month with the lowest average high temperature is December (44.2°F).
- Average low temperature in May: 44.6°F
The month with the highest average low temperature is August (55.6°F).
The coldest month (with the lowest average low temperature) is December (34.7°F).
Average pressure in May
Beaverton, OR
- Average pressure in May: 30.03"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The months with the lowest atmospheric pressure are August and September (30.01"Hg).
Average wind speed in May
Beaverton, OR
- Average wind speed in May: 4.3mph
The windiest month (with the highest average wind speed) is January (5.4mph).
The calmest month (with the lowest average wind speed) is August (4mph).
Average humidity in May
Beaverton, OR
- Average humidity in May: 72%
The months with the highest relative humidity are February and December (84%).
The month with the lowest relative humidity is August (63%).
Average rainfall in May
Beaverton, OR
- Average rainfall in May: 1.69"
The wettest month (with the highest rainfall) is December (4.61").
The driest month (with the least rainfall) is July (0.31").
Average rainfall days in May
Beaverton, OR
- Average rainfall days in May: 13.8 days
The month with the highest number of rainy days is March (20.6 days).
The month with the least rainy days is August (4.6 days).
Average snowfall in May
Beaverton, OR
- Average snowfall in May: 0"
The month with the highest snowfall is February (1.61").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in May
Beaverton, OR
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is February (2.2 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in May /
Average sunshine in May
Beaverton, OR
- Average daylight in May: 14h and 54min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in May: 8h and 42min
The month with the most sunshine is August (Average sunshine: 10h and 54min).
The month with the least sunshine is February (Average sunshine: 3h and 54min).
Average sunshine days in May
Beaverton, OR
- Average sunshine days in May: 15.8 days
The month with the most sunshine days is July (24.9 days).
The month with the least sunshine days is March (8.6 days).
Average UV index in May
Beaverton, OR
- 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
Beaverton, OR
- Average cloud cover in May: 47
The month with the most cloud cover is February (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 23).
Average visibility in May
Beaverton, OR
- Average visibility in May: 5mi
The months with the highest visibility are July, August and September (6mi).
The months with the lowest visibility are January, February, March, April, May, June, October, November and December (5mi).
