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
Winthrop's weather in April shows a rise in the average high-temperature, moving up from March's icy 36.5°F (2.5°C) to a chilly 46°F (7.8°C). In April, the temperature in Winthrop drops to an average of 26.6°F (-3°C) at night.Humidity
In April, the average relative humidity is 77%.Rainfall
In Winthrop, in April, it is raining for 15.8 days, with typically 1.22" (31mm) of accumulated precipitation. Throughout the year, there are 142.6 rainfall days, and 17.91" (455mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, September through December. April is the last month it regularly snows. During 3.5 snowfall days, in April, Winthrop aggregates 1.22" (31mm) of snow. Throughout the year, there are 66.9 snowfall days, and 43.98" (1117mm) of snow is accumulated.Daylight
In Winthrop, the average length of the day in April is 13h and 44min.On the first day of April in Winthrop, sunrise is at 6:36 am and sunset at 7:32 pm. On the last day of the month, sunrise is at 5:41 am and sunset at 8:14 pm PDT.
Sunshine
In Winthrop, the average sunshine in April is 9.9h.UV index
In Winthrop, the average daily maximum UV index in April is 2. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: A maximum UV index of 2 in April translates into the following recommendations:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are April temperatures?
What is the average humidity in April?
How many days does it rain in April in Winthrop?
What is the last month it snows?
How many hours of daylight does Winthrop have in April?
When is the sunrise / sunset in April?
How many hours of sunshine does Winthrop have in April?
What is the UV index reading in April?
Average temperature in April
Winthrop, WA
- Average high temperature in April: 46°F
The warmest month (with the highest average high temperature) is August (75.9°F).
The month with the lowest average high temperature is December (27.5°F).
- Average low temperature in April: 26.6°F
The month with the highest average low temperature is August (47.8°F).
The coldest month (with the lowest average low temperature) is December (13.5°F).
Average pressure in April
Winthrop, WA
- Average pressure in April: 30"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The months with the lowest atmospheric pressure are June and August (29.95"Hg).
Average wind speed in April
Winthrop, WA
- Average wind speed in April: 4.8mph
The windiest months (with the highest average wind speed) are June and July (5mph).
The calmest months (with the lowest average wind speed) are January and December (3.6mph).
Average humidity in April
Winthrop, WA
- Average humidity in April: 77%
The month with the highest relative humidity is January (93%).
The months with the lowest relative humidity are July and August (53%).
Average rainfall in April
Winthrop, WA
- Average rainfall in April: 1.22"
The wettest month (with the highest rainfall) is December (2.48").
The driest month (with the least rainfall) is July (0.31").
Average rainfall days in April
Winthrop, WA
- Average rainfall days in April: 15.8 days
The month with the highest number of rainy days is March (17.3 days).
The month with the least rainy days is August (6.1 days).
Average snowfall in April
Winthrop, WA
- Average snowfall in April: 1.22"
The month with the highest snowfall is December (12.87").
The months with the least snowfall are May, June, July and August (0").
Average snowfall days in April
Winthrop, WA
- Average snowfall days in April: 3.5 days
The month with the highest number of snowfall days is December (15.3 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in April /
Average sunshine in April
Winthrop, WA
- Average daylight in April: 13h and 4min
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: 9h and 5min
The month with the most sunshine is August (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in April
Winthrop, WA
- Average sunshine days in April: 10.5 days
The month with the most sunshine days is August (23 days).
The month with the least sunshine days is March (8.3 days).
Average UV index in April
Winthrop, WA
- Average UV index in April: 2
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February and November (UV index 1).
Average cloud cover in April
Winthrop, WA
- Average cloud cover in April: 39
The month with the most cloud cover is January (Cloud cover 55).
The month with the least cloud cover is August (Cloud cover 15).
Average visibility in April
Winthrop, WA
- Average visibility in April: 5mi
The months with the highest visibility are May, June, July, August, September and October (6mi).
The months with the lowest visibility are January and February (3mi).
Winthrop, Washington, USA
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