April weather forecastSudden Valley, WA
April
Weather in April
April in Sudden Valley, Washington, is a cool spring month, with an average temperature varying between 53.8°F (12.1°C) and 40.1°F (4.5°C).Temperature
The arrival of April signals a slight increase in the average high-temperature, moving from a chilly 48°F (8.9°C) in March to a cool 53.8°F (12.1°C). Sudden Valley experiences an average low-temperature of 40.1°F (4.5°C) in the month of April.Humidity
In April, the average relative humidity is 80%.Rainfall
In Sudden Valley, during April, the rain falls for 10.8 days and regularly aggregates up to 0.51" (13mm) of precipitation. In Sudden Valley, Washington, during the entire year, the rain falls for 104.5 days and collects up to 7.01" (178mm) of precipitation.Snowfall
January through April, November and December are months with snowfall in Sudden Valley. April is the last month it regularly snows in Sudden Valley, Washington. During 0.4 snowfall days, in April, Sudden Valley aggregates 0.12" (3mm) of snow. In Sudden Valley, during the entire year, snow falls for 10.9 days and aggregates up to 1.65" (42mm) of snow.Daylight
In Sudden Valley, Washington, the average length of the day in April is 13h and 44min.On the first day of the month, sunrise is at 6:45 am and sunset at 7:40 pm. On the last day of April, in Sudden Valley, Washington, sunrise is at 5:49 am and sunset at 8:23 pm PDT.
Sunshine
In Sudden Valley, the average sunshine in April is 8h.UV index
The average daily maximum UV index in April is 3. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In April, a regular UV index of 3 translates into these guidelines:
Take care. Persons with lighter skin might suffer burns in less than 30 minutes. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. Experience reduced UV exposure by about half when donning a wide-brim hat. Notice! The UV radiation of the Sun can be intensified nearly twofold due to the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Sudden Valley, WA
- Average high temperature in April: 53.8°F
The warmest month (with the highest average high temperature) is August (71.1°F).
The month with the lowest average high temperature is December (41.7°F).
- Average low temperature in April: 40.1°F
The month with the highest average low temperature is August (52.7°F).
The coldest months (with the lowest average low temperature) are February and December (34.3°F).
Average pressure in April
Sudden Valley, WA
- Average pressure in April: 30.03"Hg
The month with the highest atmospheric pressure is January (30.08"Hg).
The month with the lowest atmospheric pressure is March (30"Hg).
Average wind speed in April
Sudden Valley, WA
- Average wind speed in April: 5mph
The windiest months (with the highest average wind speed) are November and December (5.8mph).
The calmest month (with the lowest average wind speed) is August (3.5mph).
Average humidity in April
Sudden Valley, WA
- Average humidity in April: 80%
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is July (74%).
Average rainfall in April
Sudden Valley, WA
- Average rainfall in April: 0.51"
The wettest month (with the highest rainfall) is January (1.1").
The driest months (with the least rainfall) are July and August (0.2").
Average rainfall days in April
Sudden Valley, WA
- Average rainfall days in April: 10.8 days
The month with the highest number of rainy days is November (13.6 days).
The month with the least rainy days is August (3.1 days).
Average snowfall in April
Sudden Valley, WA
- Average snowfall in April: 0.12"
The month with the highest snowfall is February (0.63").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in April
Sudden Valley, WA
- Average snowfall days in April: 0.4 days
The month with the highest number of snowfall days is February (3.4 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in April /
Average sunshine in April
Sudden Valley, WA
- Average daylight in April: 13h and 42min
The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in April: 8h and 0min
The month with the most sunshine is August (Average sunshine: 10h and 36min).
The months with the least sunshine are January and December (Average sunshine: 4h and 12min).
Average sunshine days in April
Sudden Valley, WA
- Average sunshine days in April: 11.8 days
The month with the most sunshine days is August (24.9 days).
The month with the least sunshine days is November (11.3 days).
Average UV index in April
Sudden Valley, WA
- Average UV index in April: 3
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in April
Sudden Valley, WA
- Average cloud cover in April: 50
The months with the most cloud cover are January, February, March and December (Cloud cover 56).
The months with the least cloud cover are July and August (Cloud cover 26).
Average visibility in April
Sudden Valley, WA
- Average visibility in April: 6mi
The months with the highest visibility are April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February and March (5mi).
