Contents
- Weather in April
- Frequently asked questions
- Average temperature in April
- Average pressure in April
- Average wind speed in April
- Average humidity in April
- Average rainfall in April
- Average rainfall days in April
- Average snowfall in April
- Average snowfall days in April
- Average daylight in April
- Average sunshine in April
- Average sunshine days in April
- Average UV index in April
- Average cloud cover in April
- Average visibility in April
Weather in April
Temperature
April's advent denotes a minor fluctuation in the average high-temperature to a cool 53.6°F (12°C) from March's 48.4°F (9.1°C). The mean low-temperature during April nights is an icy 39.4°F (4.1°C).Humidity
In April, the average relative humidity is 81%.Rainfall
In Silvana, in April, during 19 rainfall days, 2.95" (75mm) of precipitation is typically accumulated. In Silvana, during the entire year, the rain falls for 188.6 days and collects up to 34.92" (887mm) of precipitation.Snowfall
January through April, November and December are months with snowfall. April is the last month it regularly snows. During 0.2 snowfall days, in April, Silvana aggregates 0.12" (3mm) of snow. In Silvana, during the entire year, snow falls for 11.6 days and aggregates up to 9.61" (244mm) of snow.Daylight
The average length of the day in April is 13h and 43min.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 Silvana, sunrise is at 5:50 am and sunset at 8:22 pm PDT.
Sunshine
The average sunshine in April in Silvana is 7.9h.UV index
The average daily maximum UV index in April is 3. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for average individuals.Note: The maximum UV index of 3 during April leads to these instructions:
Act with care - The suggestion to avoid sunburn is emphasized. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Always opt for UVA and UVB-resistant sunglasses on radiant days. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
Frequently asked questions
What is the usual temperature for Silvana in April?
What is the average humidity in April in Silvana?
How much does it rain in Silvana in April?
What is the last month it snows in Silvana?
What is the average length of the day in April in Silvana?
What time are sunrise and sunset in April in Silvana?
How long on average sun shines in April in Silvana?
How high is the UV index in April in Silvana?
Average temperature in April
Silvana, WA
- Average high temperature in April: 53.6°F
The warmest month (with the highest average high temperature) is August (72.3°F).
The month with the lowest average high temperature is December (41.7°F).
- Average low temperature in April: 39.4°F
The month with the highest average low temperature is August (51.6°F).
The coldest month (with the lowest average low temperature) is February (33.8°F).
Average pressure in April
Silvana, WA
- Average pressure in April: 30.04"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is August (30"Hg).
Average wind speed in April
Silvana, WA
- Average wind speed in April: 4.7mph
The windiest months (with the highest average wind speed) are January and November (5.6mph).
The calmest month (with the lowest average wind speed) is August (3.3mph).
Average humidity in April
Silvana, WA
- Average humidity in April: 81%
The months with the highest relative humidity are January, February, November and December (85%).
The month with the lowest relative humidity is July (73%).
Average rainfall in April
Silvana, WA
- Average rainfall in April: 2.95"
The wettest month (with the highest rainfall) is November (4.92").
The driest month (with the least rainfall) is July (0.51").
Average rainfall days in April
Silvana, WA
- Average rainfall days in April: 19 days
The month with the highest number of rainy days is March (20.9 days).
The month with the least rainy days is August (6.9 days).
Average snowfall in April
Silvana, WA
- Average snowfall in April: 0.12"
The month with the highest snowfall is February (4.45").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in April
Silvana, WA
- Average snowfall days in April: 0.2 days
The month with the highest number of snowfall days is February (4.3 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
Silvana, WA
- Average daylight in April: 13h and 4min
The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in April: 7h and 5min
The month with the most sunshine is August (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 4h and 6min).
Average sunshine days in April
Silvana, WA
- Average sunshine days in April: 8.4 days
The month with the most sunshine days is August (22 days).
The month with the least sunshine days is March (8.1 days).
Average UV index in April
Silvana, 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, October, November and December (UV index 2).
Average cloud cover in April
Silvana, WA
- Average cloud cover in April: 51
The month with the most cloud cover is December (Cloud cover 57).
The months with the least cloud cover are July and August (Cloud cover 26).
Average visibility in April
Silvana, WA
- Average visibility in April: 6mi
The months with the highest visibility are March, April, May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February, November and December (5mi).
Silvana, Washington, USA
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