April weather forecast and climate
Mountain View, CA

A street in Mountain View Town, California, with neon-lit building, trees, and parked cars
A street in Mountain View Town, California, with neon-lit building, trees, and parked cars

Weather in April

April, the same as March, is another enjoyable spring month in Mountain View, California, with average temperature fluctuating between 66.2°F (19°C) and 46°F (7.8°C).

Temperature

In April, the average high-temperature is relatively the same as in March - a still comfortable 66.2°F (19°C). In Mountain View, the average low-temperature is 46°F (7.8°C).

Humidity

The average relative humidity in April is 70%.

Rainfall

In Mountain View, during 5.8 rainfall days, 0.28" (7mm) of precipitation is typically 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

The average length of the day in Mountain View is 13.2h.

Sunshine

The average sunshine in Mountain View is 10.5h.

UV index

In Mountain View, the average daily maximum UV index in April is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from unsafe exposure to the UV radiation for ordinary individuals.
Note: The daily maximum UV index of 5 interpret into the following advice:
Take precautions - Protection against sunburn is recommended. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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FAQ

What is the temperature in April in Mountain View?

The average high-temperature, in April, in Mountain View, California, is 66.2°F (19°C), while the average low-temperature is 46°F (7.8°C).

What is the average humidity in April in Mountain View?

In April, the average relative humidity in Mountain View, California, is 70%.

How many days does it rain in April in Mountain View?

In Mountain View, California, in April, it is raining for 5.8 days, with typically 0.28" (7mm) of accumulated precipitation.

What is the average length of the day in April in Mountain View?

In Mountain View, California, the average length of the day in April is 13.2h.

How long on average sun shines in April in Mountain View?

In April, the average sunshine is 10.5h.

How high is the UV index in April in Mountain View?

In April, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a moderate health threat from unsafe exposure to the Sun's UV rays.

Average temperature in April
Mountain View, CA

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).

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Average pressure in April
Mountain View, CA

Average pressure in April - Mountain View, CA
  • Average pressure in April: 30.04"

The month with the highest atmospheric pressure is January (30.13").
Months with the lowest atmospheric pressure are June and September (29.92").

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Average wind speed in April
Mountain View, CA

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).

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Average humidity in April
Mountain View, CA

Average humidity in April - Mountain View, CA
  • Average humidity in April: 70%

The month with the highest relative humidity is March (73%).
Months with the lowest relative humidity are July, September and October (63%).

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Average rainfall in April
Mountain View, CA

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").

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Average rainfall days in April
Mountain View, CA

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).

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Average daylight in April /
Average sunshine in April
Mountain View, CA

Average daylight in April / Average sunshine in April - Mountain View, CA
  • Average daylight in April: 13.2h

The month with the longest days is June (Average daylight: 14.7h).
The month with the shortest days is December (Average daylight: 9.6h).

  • Average sunshine in April: 10.5h

Months with the most sunshine are July and August (Average sunshine: 12h).
The month with the least sunshine is December (Average sunshine: 5.9h).

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Average sunshine days in April
Mountain View, CA

Average sunshine days in April - Mountain View, CA
  • Average sunshine days in April: 23.2 days

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).

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Average UV index in April
Mountain View, CA

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).
Months with the lowest UV index are February, November and December (UV index 3).

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Average cloud cover in April
Mountain View, CA

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).

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Average visibility in April
Mountain View, CA

Average visibility in April - Mountain View, CA
  • Average visibility in April: 6mi

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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