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
May sees a temperature increase, moving from a cool 54.5°F (12.5°C) in April to a refreshing 63.9°F (17.7°C). Pullman experiences a significant reduction from daytime highs with an average low-temperature of 41.7°F (5.4°C) in May.Humidity
In May, the average relative humidity in Pullman, Washington, is 69%.Rainfall
In May, in Pullman, Washington, the rain falls for 14.8 days. Throughout May, 2.09" (53mm) of precipitation is accumulated. In Pullman, during the entire year, the rain falls for 131 days and collects up to 18.15" (461mm) of precipitation.Snowfall
January through May, September through December are months with snowfall in Pullman. May is the last month it regularly snows. During 0.3 snowfall days, in May, Pullman aggregates 0.08" (2mm) of snow. Throughout the year, in Pullman, there are 53.7 snowfall days, and 37.44" (951mm) of snow is accumulated.Daylight
The average length of the day in May in Pullman, Washington, is 15h and 4min.On the first day of the month, sunrise is at 5:32 am and sunset at 7:59 pm. On the last day of May, in Pullman, sunrise is at 4:58 am and sunset at 8:34 pm PDT.
Sunshine
In May, the average sunshine in Pullman is 10.4h.UV index
In May, the average daily maximum UV index in Pullman is 4. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.Note: A maximum high daily UV index of 4 during May translates into the following directions:
Take precautions - Protection against sunburn is recommended. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Enhance your sun protection with tightly woven, yet airy clothing. Take precaution! The reflection from snow can almost double the UV radiation of the Sun.
Frequently asked questions
What is the temperature in May in Pullman?
What is the average humidity in May in Pullman?
How many days does it rain in May in Pullman?
What is the last month it snows in Pullman?
How many hours of daylight does Pullman have in May?
When is the sunrise / sunset in May in Pullman?
How long on average sun shines in May in Pullman?
What is the UV index reading in May in Pullman?
Average temperature in May
Pullman, WA
- Average high temperature in May: 63.9°F
The warmest month (with the highest average high temperature) is August (83.7°F).
The month with the lowest average high temperature is December (34.3°F).
- Average low temperature in May: 41.7°F
The month with the highest average low temperature is August (58.6°F).
The coldest month (with the lowest average low temperature) is December (24.1°F).
Average pressure in May
Pullman, 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
Pullman, WA
- Average wind speed in May: 5.4mph
The windiest months (with the highest average wind speed) are March and April (6.7mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in May
Pullman, WA
- Average humidity in May: 69%
The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is August (39%).
Average rainfall in May
Pullman, WA
- Average rainfall in May: 2.09"
The wettest month (with the highest rainfall) is January (2.2").
The driest months (with the least rainfall) are July and August (0.47").
Average rainfall days in May
Pullman, WA
- Average rainfall days in May: 14.8 days
The month with the highest number of rainy days is March (15.4 days).
The months with the least rainy days are July and August (5.8 days).
Average snowfall in May
Pullman, WA
- Average snowfall in May: 0.08"
The month with the highest snowfall is February (10.04").
The months with the least snowfall are June, July and August (0").
Average snowfall days in May
Pullman, WA
- Average snowfall days in May: 0.3 days
The month with the highest number of snowfall days is December (12.9 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in May /
Average sunshine in May
Pullman, WA
- Average daylight in May: 15h and 1min
The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).
- Average sunshine in May: 10h and 2min
The month with the most sunshine is August (Average sunshine: 12h and 6min).
The months with the least sunshine are January, February and December (Average sunshine: 4h and 42min).
Average sunshine days in May
Pullman, WA
- Average sunshine days in May: 13.4 days
The month with the most sunshine days is July (23.4 days).
The month with the least sunshine days is February (10.2 days).
Average UV index in May
Pullman, 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, March, November and December (UV index 2).
Average cloud cover in May
Pullman, WA
- Average cloud cover in May: 32
The months with the most cloud cover are January and February (Cloud cover 52).
The months with the least cloud cover are July and August (Cloud cover 12).
Average visibility in May
Pullman, 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).
Pullman, Washington, USA
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