May weather forecastCarlton, WA
May
Weather in May
May, the last month of the spring in Carlton, is a mild month, with an average temperature varying between 59.4°F (15.2°C) and 36.7°F (2.6°C).Temperature
Carlton's weather in May shows a rise in the average high-temperature, moving up from April's chilly 47.5°F (8.6°C) to a refreshing 59.4°F (15.2°C). Carlton's May nights represent a significant downturn from the day's heat, with an average temperature of 36.7°F (2.6°C).Humidity
In Carlton, the average relative humidity in May is 66%.Rainfall
In Carlton, in May, during 14.6 rainfall days, 1.57" (40mm) of precipitation is typically accumulated. In Carlton, Washington, during the entire year, the rain falls for 141.4 days and collects up to 18.07" (459mm) of precipitation.Snowfall
In Carlton, Washington, snow does not fall in May through August.Daylight
In May, the average length of the day is 15h and 14min.On the first day of the month, sunrise is at 5:39 am and sunset at 8:15 pm. On the last day of May, sunrise is at 5:04 am and sunset at 8:52 pm PDT.
Sunshine
The average sunshine in May in Carlton is 10.8h.UV index
In May, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for average individuals.Note: The UV index of 4 in May translates into these instructions:
Preventative actions are necessary - The mandate to avoid skin and eye damage is in place. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. Bear in mind! The Sun's UV radiation can nearly double in intensity due to the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Carlton, WA
- Average high temperature in May: 59.4°F
The warmest month (with the highest average high temperature) is August (76.8°F).
The month with the lowest average high temperature is December (27.9°F).
- Average low temperature in May: 36.7°F
The month with the highest average low temperature is August (48.9°F).
The coldest month (with the lowest average low temperature) is December (14.7°F).
Average pressure in May
Carlton, WA
- Average pressure in May: 29.96"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is August (29.94"Hg).
Average wind speed in May
Carlton, WA
- Average wind speed in May: 4.6mph
The windiest month (with the highest average wind speed) is July (5.1mph).
The calmest months (with the lowest average wind speed) are January and December (3.5mph).
Average humidity in May
Carlton, WA
- Average humidity in May: 66%
The months with the highest relative humidity are January and February (92%).
The months with the lowest relative humidity are July and August (51%).
Average rainfall in May
Carlton, WA
- Average rainfall in May: 1.57"
The wettest month (with the highest rainfall) is December (2.52").
The driest month (with the least rainfall) is July (0.35").
Average rainfall days in May
Carlton, WA
- Average rainfall days in May: 14.6 days
The month with the highest number of rainy days is March (17.1 days).
The month with the least rainy days is August (5.7 days).
Average snowfall in May
Carlton, WA
- Average snowfall in May: 0"
The month with the highest snowfall is December (12.28").
The months with the least snowfall are May, June, July and August (0").
Average snowfall days in May
Carlton, WA
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is December (15.5 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in May /
Average sunshine in May
Carlton, WA
- Average daylight in May: 15h and 12min
The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in May: 10h and 48min
The months with the most sunshine are July and August (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).
Average sunshine days in May
Carlton, WA
- Average sunshine days in May: 13.3 days
The month with the most sunshine days is August (22.8 days).
The month with the least sunshine days is March (8.9 days).
Average UV index in May
Carlton, 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 and November (UV index 1).
Average cloud cover in May
Carlton, WA
- Average cloud cover in May: 31
The month with the most cloud cover is January (Cloud cover 55).
The month with the least cloud cover is August (Cloud cover 14).
Average visibility in May
Carlton, WA
- Average visibility in May: 6mi
The months with the highest visibility are April, May, June, July, August, September and October (6mi).
The month with the lowest visibility is January (3mi).





