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
The transition from March to April sees an average high-temperature of a still refreshing 66.2°F (19°C), indicating a minor variance from the prior month. The month of April records an average low-temperature of 46°F (7.8°C).Humidity
The average relative humidity in April is 70%.Rainfall
In April, the rain falls for 5.8 days. Throughout April, 0.28" (7mm) of precipitation is accumulated. In Mountain View, during the entire year, the rain falls for 53.1 days and collects up to 4.41" (112mm) of precipitation.Daylight
In Mountain View, the average length of the day in April is 13h and 11min.On the first day of the month, sunrise is at 6:52 am and sunset at 7:31 pm. On the last day of April, sunrise is at 6:13 am and sunset at 7:57 pm PDT.
Sunshine
In Mountain View, the average sunshine in April is 10.5h.UV index
In April, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for average individuals.Note: In April, a regular UV index of 5 translates into these guidelines:
Make use of precautions - It is urged to ward off sun damage. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Mountain View in April?
What is the average humidity in April?
How many days does it rain in April in Mountain View?
What is the average length of the day in April in Mountain View?
When are sunrise and sunset in April?
How many hours of sunshine does Mountain View have in April?
What is the UV index reading in April?
Average temperature in April
Mountain View, CA
- Average high temperature in April: 66.2°F
The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is December (56.5°F).
- Average low temperature in April: 46°F
The month with the highest average low temperature is August (56.8°F).
The coldest month (with the lowest average low temperature) is December (44.1°F).
Average pressure in April
Mountain View, CA
- Average pressure in April: 30.04"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The months with the lowest atmospheric pressure are June and September (29.92"Hg).
Average wind speed in April
Mountain View, CA
- Average wind speed in April: 6.2mph
The windiest months (with the highest average wind speed) are April and May (6.2mph).
The calmest months (with the lowest average wind speed) are August, September, October and November (4.7mph).
Average humidity in April
Mountain View, CA
- Average humidity in April: 70%
The month with the highest relative humidity is March (73%).
The months with the lowest relative humidity are July, September and October (63%).
Average rainfall in April
Mountain View, CA
- Average rainfall in April: 0.28"
The wettest months (with the highest rainfall) are February, March and December (0.83").
The driest months (with the least rainfall) are June, July and August (0.04").
Average rainfall days in April
Mountain View, CA
- Average rainfall days in April: 5.8 days
The month with the highest number of rainy days is March (10 days).
The month with the least rainy days is August (0.4 days).
Average daylight in April /
Average sunshine in April
Mountain View, CA
- Average daylight in April: 13h and 1min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in April: 10h and 3min
The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 54min).
Average sunshine days in April
Mountain View, CA
- Average sunshine days in April: 23.2 days
The months with the most sunshine days are July and August (29.8 days).
The month with the least sunshine days is March (19.4 days).
Average UV index in April
Mountain View, CA
- Average UV index in April: 5
The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are February, November and December (UV index 3).
Average cloud cover in April
Mountain View, CA
- Average cloud cover in April: 26
The month with the most cloud cover is March (Cloud cover 35).
The month with the least cloud cover is July (Cloud cover 7).
Average visibility in April
Mountain View, 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).
Mountain View, California, USA
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