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's onset is marked by a temperature increase, moving from a moderate 59.2°F (15.1°C) in April to a pleasant 69.3°F (20.7°C). Ahtanum anticipates a pronounced temperature drop from daily highs during the nights of May, with an average low of 47.5°F (8.6°C).Humidity
In May, the average relative humidity in Ahtanum is 51%.Rainfall
In Ahtanum, during May, the rain falls for 6.8 days and regularly aggregates up to 0.63" (16mm) of precipitation. Throughout the year, there are 82.2 rainfall days, and 5.43" (138mm) of precipitation is accumulated.Snowfall
April through August and October are months without snowfall in Ahtanum.Daylight
In May, the average length of the day in Ahtanum is 15h and 2min.On the first day of the month, sunrise is at 5:46 am and sunset at 8:12 pm. On the last day of May, in Ahtanum, sunrise is at 5:13 am and sunset at 8:47 pm PDT.
Sunshine
In May, the average sunshine in Ahtanum is 11.4h.UV index
In Ahtanum, Washington, the average daily maximum UV index in May is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for average individuals.Note: A maximum high UV index of 5 in May translates into the following recommendations:
Undertake precautions - Guarding against sun damage is counselled. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
Frequently asked questions
What are the temperatures in Ahtanum in May?
What is the average humidity in May in Ahtanum?
How much does it rain in Ahtanum in May?
When it does not snow in Ahtanum?
How many hours of daylight does Ahtanum have in May?
When is the sunrise / sunset in May in Ahtanum?
How many hours of sunshine does Ahtanum have in May?
What is the UV index reading in May in Ahtanum?
Average temperature in May
Ahtanum, WA
- Average high temperature in May: 69.3°F
The warmest month (with the highest average high temperature) is August (86.5°F).
The month with the lowest average high temperature is December (36.9°F).
- Average low temperature in May: 47.5°F
The month with the highest average low temperature is August (60.3°F).
The coldest month (with the lowest average low temperature) is December (25.5°F).
Average pressure in May
Ahtanum, WA
- Average pressure in May: 29.97"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is August (29.93"Hg).
Average wind speed in May
Ahtanum, WA
- Average wind speed in May: 6.8mph
The windiest month (with the highest average wind speed) is June (7.1mph).
The calmest month (with the lowest average wind speed) is December (4.4mph).
Average humidity in May
Ahtanum, WA
- Average humidity in May: 51%
The month with the highest relative humidity is January (81%).
The months with the lowest relative humidity are July and August (39%).
Average rainfall in May
Ahtanum, WA
- Average rainfall in May: 0.63"
The wettest month (with the highest rainfall) is January (0.87").
The driest month (with the least rainfall) is July (0.08").
Average rainfall days in May
Ahtanum, WA
- Average rainfall days in May: 6.8 days
The month with the highest number of rainy days is March (10.8 days).
The month with the least rainy days is August (2 days).
Average snowfall in May
Ahtanum, WA
- Average snowfall in May: 0"
The month with the highest snowfall is December (2.76").
The months with the least snowfall are April, May, June, July, August and October (0").
Average snowfall days in May
Ahtanum, WA
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is December (5.4 days).
The months with the least snowfall days are May, June, July, August and October (0 days).
Average daylight in May /
Average sunshine in May
Ahtanum, WA
- Average daylight in May: 15h and 0min
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: 11h and 2min
The months with the most sunshine are July and August (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 5h and 36min).
Average sunshine days in May
Ahtanum, WA
- Average sunshine days in May: 21.2 days
The month with the most sunshine days is July (27.5 days).
The month with the least sunshine days is February (15.8 days).
Average UV index in May
Ahtanum, WA
- Average UV index in May: 5
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
Ahtanum, WA
- Average cloud cover in May: 22
The month with the most cloud cover is January (Cloud cover 40).
The months with the least cloud cover are July and August (Cloud cover 9).
Average visibility in May
Ahtanum, WA
- Average visibility in May: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
Ahtanum, Washington, USA
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