Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average snowfall in May
- Average snowfall days in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
Weather in May
Temperature
The beginning of May marks a minor shift in the average high-temperature, moving from April's mild 56.8°F (13.8°C) to an enjoyable 65.7°F (18.7°C). Clarkston logs a substantial downturn to an icy 42.1°F (5.6°C) during May nights, a considerable shift from daytime highs.Humidity
In May, the average relative humidity is 68%.Rainfall
In Clarkston, in May, it is raining for 11.6 days, with typically 0.94" (24mm) of accumulated precipitation. In Clarkston, during the entire year, the rain falls for 116.2 days and collects up to 8.23" (209mm) of precipitation.Snowfall
April through September are months without snowfall.Daylight
The average length of the day in May is 15h and 2min.On the first day of May, sunrise is at 5:32 am and sunset at 7:57 pm. On the last day of the month, sunrise is at 4:59 am and sunset at 8:32 pm PDT.
Sunshine
The average sunshine in May in Clarkston is 10.8h.UV index
In May, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the average person.Note: The maximum UV index of 4 during May translates into these guidelines:
Guard yourself - Precautionary measures against sun damage are advocated. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in May in Clarkston?
What is the average humidity in May in Clarkston?
How many days does it rain in May in Clarkston?
When it does not snow in Clarkston?
How many hours of daylight does Clarkston have in May?
What time are sunrise and sunset in May in Clarkston?
How many hours of sunshine does Clarkston have in May?
How high is the UV index in May in Clarkston?
Average temperature in May
Clarkston, WA
- Average high temperature in May: 65.7°F
The warmest month (with the highest average high temperature) is August (85.6°F).
The month with the lowest average high temperature is December (36.5°F).
- Average low temperature in May: 42.1°F
The month with the highest average low temperature is August (59.4°F).
The coldest month (with the lowest average low temperature) is December (24.8°F).
Average pressure in May
Clarkston, WA
- Average pressure in May: 29.95"Hg
The month with the highest atmospheric pressure is January (30.2"Hg).
The month with the lowest atmospheric pressure is August (29.91"Hg).
Average wind speed in May
Clarkston, WA
- Average wind speed in May: 4.8mph
The windiest month (with the highest average wind speed) is April (6mph).
The calmest month (with the lowest average wind speed) is August (4.4mph).
Average humidity in May
Clarkston, WA
- Average humidity in May: 68%
The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is August (38%).
Average rainfall in May
Clarkston, WA
- Average rainfall in May: 0.94"
The wettest month (with the highest rainfall) is March (0.98").
The driest month (with the least rainfall) is August (0.24").
Average rainfall days in May
Clarkston, WA
- Average rainfall days in May: 11.6 days
The months with the highest number of rainy days are March and April (13.8 days).
The month with the least rainy days is August (4.5 days).
Average snowfall in May
Clarkston, WA
- Average snowfall in May: 0"
The month with the highest snowfall is February (1.89").
The months with the least snowfall are April, May, June, July, August and September (0").
Average snowfall days in May
Clarkston, WA
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is February (4.7 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Clarkston, 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: 10h and 5min
The month with the most sunshine is August (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 5h and 0min).
Average sunshine days in May
Clarkston, WA
- Average sunshine days in May: 15.8 days
The month with the most sunshine days is July (23.8 days).
The month with the least sunshine days is February (12.8 days).
Average UV index in May
Clarkston, WA
- Average UV index in May: 4
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
Clarkston, WA
- Average cloud cover in May: 30
The month with the most cloud cover is February (Cloud cover 48).
The months with the least cloud cover are July and August (Cloud cover 12).
Average visibility in May
Clarkston, WA
- Average visibility in May: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (5mi).
Clarkston, Washington, USA
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