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 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 signifies a subtle uplift in the average high-temperature, adjusting from a refreshing 61.3°F (16.3°C) in March to an agreeable 68°F (20°C). A noticeable temperature swing characterizes Yountville's April nights, dipping to an average of 44.4°F (6.9°C).Humidity
The average relative humidity in April is 69%.Rainfall
In Yountville, in April, it is raining for 8.3 days, with typically 0.79" (20mm) of accumulated precipitation. Throughout the year, there are 77.8 rainfall days, and 16.02" (407mm) of precipitation is accumulated.Daylight
In Yountville, the average length of the day in April is 13h and 14min.On the first day of April, sunrise is at 6:52 am and sunset at 7:33 pm. On the last day of the month, sunrise is at 6:12 am and sunset at 8:00 pm PDT.
Sunshine
In Yountville, the average sunshine in April is 10h.UV index
In April, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for the average person.Note: The daily maximum UV index of 5 in April interprets into the following advice:
Be mindful. Individuals with a lighter skin tone may suffer burns in less than 30 minutes. It's recommended to limit sun exposure when its radiation is at its peak during midday. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average April temperature?
What is the average humidity in April?
How many days does it rain in April?
What is the average length of the day in April in Yountville?
When are sunrise and sunset in April?
How many hours of sunshine does Yountville have in April?
What is the UV index reading in April?
Average temperature in April
Yountville, CA
- Average high temperature in April: 68°F
The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is December (54.5°F).
- Average low temperature in April: 44.4°F
The month with the highest average low temperature is August (55.4°F).
The coldest month (with the lowest average low temperature) is December (40.1°F).
Average pressure in April
Yountville, CA
- Average pressure in April: 30.03"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The months with the lowest atmospheric pressure are June and August (29.91"Hg).
Average wind speed in April
Yountville, CA
- Average wind speed in April: 5.8mph
The windiest month (with the highest average wind speed) is May (6mph).
The calmest month (with the lowest average wind speed) is November (4.3mph).
Average humidity in April
Yountville, CA
- Average humidity in April: 69%
The month with the highest relative humidity is March (76%).
The month with the lowest relative humidity is September (54%).
Average rainfall in April
Yountville, CA
- Average rainfall in April: 0.79"
The wettest month (with the highest rainfall) is February (3.43").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in April
Yountville, CA
- Average rainfall days in April: 8.3 days
The month with the highest number of rainy days is March (13.9 days).
The month with the least rainy days is August (0.9 days).
Average daylight in April /
Average sunshine in April
Yountville, CA
- Average daylight in April: 13h and 1min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in April: 10h and 0min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 36min).
Average sunshine days in April
Yountville, CA
- Average sunshine days in April: 20.8 days
The month with the most sunshine days is July (29.4 days).
The month with the least sunshine days is March (15.8 days).
Average UV index in April
Yountville, CA
- Average UV index in April: 5
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in April
Yountville, CA
- Average cloud cover in April: 30
The month with the most cloud cover is March (Cloud cover 40).
The month with the least cloud cover is July (Cloud cover 6).
Average visibility in April
Yountville, CA
- Average visibility in April: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Yountville, California, USA
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