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 arrival of May sees a shift in the average high-temperature, moving from a fresh 54.9°F (12.7°C) in April to a comfortable 65.8°F (18.8°C). During May, Nine Mile Falls reports a marked contrast from daily peak temperatures, with an average nighttime reading of 43.3°F (6.3°C).Humidity
The average relative humidity in May is 62%.Rainfall
In Nine Mile Falls, in May, it is raining for 13.4 days, with typically 1.65" (42mm) of accumulated precipitation. In Nine Mile Falls, during the entire year, the rain falls for 127.8 days and collects up to 16.93" (430mm) of precipitation.Snowfall
Months with snowfall are January through May, September through December. May is the last month it regularly snows. During 0.3 snowfall days, in May, Nine Mile Falls aggregates 0.08" (2mm) of snow. In Nine Mile Falls, during the entire year, snow falls for 62.3 days and aggregates up to 37.83" (961mm) of snow.Daylight
The average length of the day in May is 15h and 11min.On the first day of the month, sunrise is at 5:30 am and sunset at 8:03 pm. On the last day of May, sunrise is at 4:55 am and sunset at 8:40 pm PDT.
Sunshine
The average sunshine in May in Nine Mile Falls is 10.3h.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:
Take necessary precautions - Defending against sun damage is advocated. It's recommended to limit sun exposure when its radiation is at its peak during midday. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in May in Nine Mile Falls?
What is the average humidity in May?
How many days does it rain in May?
What is the last month it snows?
How many hours of daylight does Nine Mile Falls have in May?
When are sunrise and sunset in May?
How long on average sun shines in May in Nine Mile Falls?
What is the UV index intensity in May?
Average temperature in May
Nine Mile Falls, WA
- Average high temperature in May: 65.8°F
The warmest months (with the highest average high temperature) are July and August (83.7°F).
The month with the lowest average high temperature is December (32.2°F).
- Average low temperature in May: 43.3°F
The month with the highest average low temperature is August (59°F).
The coldest month (with the lowest average low temperature) is December (22.1°F).
Average pressure in May
Nine Mile Falls, WA
- Average pressure in May: 29.94"Hg
The month with the highest atmospheric pressure is January (30.19"Hg).
The month with the lowest atmospheric pressure is August (29.9"Hg).
Average wind speed in May
Nine Mile Falls, WA
- Average wind speed in May: 6.4mph
The windiest month (with the highest average wind speed) is April (7.3mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).
Average humidity in May
Nine Mile Falls, WA
- Average humidity in May: 62%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is August (38%).
Average rainfall in May
Nine Mile Falls, WA
- Average rainfall in May: 1.65"
The wettest month (with the highest rainfall) is March (2.13").
The driest month (with the least rainfall) is August (0.35").
Average rainfall days in May
Nine Mile Falls, WA
- Average rainfall days in May: 13.4 days
The month with the highest number of rainy days is April (16.3 days).
The month with the least rainy days is July (4.9 days).
Average snowfall in May
Nine Mile Falls, WA
- Average snowfall in May: 0.08"
The month with the highest snowfall is January (10.39").
The months with the least snowfall are June, July and August (0").
Average snowfall days in May
Nine Mile Falls, WA
- Average snowfall days in May: 0.3 days
The month with the highest number of snowfall days is December (15.6 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in May /
Average sunshine in May
Nine Mile Falls, WA
- Average daylight in May: 15h and 1min
The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- Average sunshine in May: 10h and 2min
The month with the most sunshine is August (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 3h and 54min).
Average sunshine days in May
Nine Mile Falls, WA
- Average sunshine days in May: 14.9 days
The month with the most sunshine days is July (24.1 days).
The month with the least sunshine days is March (9.8 days).
Average UV index in May
Nine Mile Falls, 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 February and December (UV index 1).
Average cloud cover in May
Nine Mile Falls, WA
- Average cloud cover in May: 33
The months with the most cloud cover are January and December (Cloud cover 59).
The months with the least cloud cover are July and August (Cloud cover 13).
Average visibility in May
Nine Mile Falls, 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 and December (4mi).
Nine Mile Falls, Washington, USA
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