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
With the onset of April, Thornton's average high-temperature sees a modest rise, moving from March's chilly 46.9°F (8.3°C) to a cool 55°F (12.8°C). An average low-temperature of 37°F (2.8°C) is noted during the nights in April.Humidity
In April, the average relative humidity is 69%.Rainfall
In April, the rain falls for 14.6 days. Throughout April, 1.42" (36mm) of precipitation is accumulated. In Thornton, during the entire year, the rain falls for 120.2 days and collects up to 14.69" (373mm) of precipitation.Snowfall
Months with snowfall in Thornton are January through May, September through December. In Thornton, in April, snow falls for 2.2 days, with typically accumulated 0.75" (19mm) of snow. In Thornton, Washington, during the entire year, snow falls for 39.6 days and aggregates up to 22.68" (576mm) of snow.Daylight
The average length of the day in April is 13h and 39min.On the first day of the month, sunrise is at 6:26 am and sunset at 7:19 pm. On the last day of April, sunrise is at 5:33 am and sunset at 7:59 pm PDT.
Sunshine
The average sunshine in April is 9.4h.UV index
In Thornton, the average daily maximum UV index in April is 3. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for the average person.Note: A maximum high daily UV index of 3 during April translates into the following directions:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
Frequently asked questions
What is the temperature in April in Thornton?
What is the average humidity in April in Thornton?
How many days does it rain in April in Thornton?
How much does it snow in Thornton in April?
What is the average length of the day in April in Thornton?
When are sunrise and sunset in April in Thornton?
How long on average sun shines in April in Thornton?
What is the UV index intensity in April in Thornton?
Average temperature in April
Thornton, WA
- Average high temperature in April: 55°F
The warmest month (with the highest average high temperature) is August (83.5°F).
The month with the lowest average high temperature is December (34.7°F).
- Average low temperature in April: 37°F
The month with the highest average low temperature is August (60.4°F).
The coldest month (with the lowest average low temperature) is December (24.6°F).
Average pressure in April
Thornton, WA
- Average pressure in April: 29.99"Hg
The month with the highest atmospheric pressure is January (30.19"Hg).
The month with the lowest atmospheric pressure is August (29.91"Hg).
Average wind speed in April
Thornton, WA
- Average wind speed in April: 7.9mph
The windiest month (with the highest average wind speed) is March (8mph).
The calmest month (with the lowest average wind speed) is August (5.9mph).
Average humidity in April
Thornton, WA
- Average humidity in April: 69%
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is August (37%).
Average rainfall in April
Thornton, WA
- Average rainfall in April: 1.42"
The wettest month (with the highest rainfall) is December (1.93").
The driest month (with the least rainfall) is July (0.28").
Average rainfall days in April
Thornton, WA
- Average rainfall days in April: 14.6 days
The month with the highest number of rainy days is April (14.6 days).
The month with the least rainy days is July (4.5 days).
Average snowfall in April
Thornton, WA
- Average snowfall in April: 0.75"
The month with the highest snowfall is February (6.69").
The months with the least snowfall are June, July and August (0").
Average snowfall days in April
Thornton, WA
- Average snowfall days in April: 2.2 days
The months with the highest number of snowfall days are February and December (9.6 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in April /
Average sunshine in April
Thornton, WA
- Average daylight in April: 13h and 4min
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 April: 9h and 2min
The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The months with the least sunshine are January and December (Average sunshine: 4h and 36min).
Average sunshine days in April
Thornton, WA
- Average sunshine days in April: 12.9 days
The month with the most sunshine days is July (24.6 days).
The month with the least sunshine days is February (12.2 days).
Average UV index in April
Thornton, WA
- Average UV index in April: 3
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 April
Thornton, WA
- Average cloud cover in April: 40
The months with the most cloud cover are January and December (Cloud cover 53).
The month with the least cloud cover is July (Cloud cover 11).
Average visibility in April
Thornton, WA
- Average visibility in April: 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, February and December (5mi).
Thornton, Washington, USA
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