April weather forecastWhite Swan, WA
April
Weather in April
April is a cool spring month in White Swan, Washington, with an average temperature varying between 36.7°F (2.6°C) and 55.2°F (12.9°C).Temperature
April sees a rise in the average high-temperature, climbing from a frosty 46°F (7.8°C) in March to a cool 55.2°F (12.9°C). In April, White Swan experiences an average nighttime temperature of 36.7°F (2.6°C).Humidity
The average relative humidity in April is 64%.Rainfall
In April, the rain falls for 12.1 days. Throughout April, 0.59" (15mm) of precipitation is accumulated. Throughout the year, there are 112.8 rainfall days, and 10.28" (261mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, September, November and December. April is the last month it regularly snows. During 0.3 snowfall days, in April, White Swan aggregates 0.08" (2mm) of snow. In White Swan, during the entire year, snow falls for 19.9 days and aggregates up to 12.36" (314mm) of snow.Daylight
In White Swan, the average length of the day in April is 13h and 37min.On the first day of April, sunrise is at 6:40 am and sunset at 7:32 pm. On the last day of the month, sunrise is at 5:48 am and sunset at 8:11 pm PDT.
Sunshine
The average sunshine in April is 10.5h.UV index
In April, the average daily maximum UV index is 3. A UV Index estimate of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: In April, an average UV index of 3 transforms into the following instructions:
Heed the precautions - It is counselled to guard against solar damage. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Take warning! The intensity of the Sun's UV radiation can be nearly amplified twice due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
White Swan, WA
- Average high temperature in April: 55.2°F
The warmest month (with the highest average high temperature) is August (83.1°F).
The month with the lowest average high temperature is December (35.2°F).
- Average low temperature in April: 36.7°F
The month with the highest average low temperature is August (56.8°F).
The coldest month (with the lowest average low temperature) is December (23.9°F).
Average pressure in April
White Swan, WA
- Average pressure in April: 30.02"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is August (29.94"Hg).
Average wind speed in April
White Swan, WA
- Average wind speed in April: 6.9mph
The windiest month (with the highest average wind speed) is April (6.9mph).
The calmest month (with the lowest average wind speed) is December (4.5mph).
Average humidity in April
White Swan, WA
- Average humidity in April: 64%
The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is August (43%).
Average rainfall in April
White Swan, WA
- Average rainfall in April: 0.59"
The wettest month (with the highest rainfall) is January (1.61").
The driest month (with the least rainfall) is July (0.12").
Average rainfall days in April
White Swan, WA
- Average rainfall days in April: 12.1 days
The month with the highest number of rainy days is March (13.7 days).
The month with the least rainy days is July (3.1 days).
Average snowfall in April
White Swan, WA
- Average snowfall in April: 0.08"
The month with the highest snowfall is February (3.5").
The months with the least snowfall are May, June, July, August and October (0").
Average snowfall days in April
White Swan, WA
- Average snowfall days in April: 0.3 days
The month with the highest number of snowfall days is December (5.5 days).
The months with the least snowfall days are May, June, July, August and October (0 days).
Average daylight in April /
Average sunshine in April
White Swan, WA
- Average daylight in April: 13h and 36min
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 April: 10h and 30min
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 24min).
Average sunshine days in April
White Swan, WA
- Average sunshine days in April: 14.7 days
The month with the most sunshine days is July (25.9 days).
The month with the least sunshine days is February (12.6 days).
Average UV index in April
White Swan, WA
- Average UV index in April: 3
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in April
White Swan, WA
- Average cloud cover in April: 30
The month with the most cloud cover is January (Cloud cover 44).
The months with the least cloud cover are July and August (Cloud cover 9).
Average visibility in April
White Swan, WA
- Average visibility in April: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January and December (5mi).
