May 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 May

The last month of the spring, May, is a pleasant month in Mountain View, California, with average temperature varying between 49.5°F (9.7°C) and 69.3°F (20.7°C).

Temperature

In May, the average high-temperature is relatively the same as in April - an agreeable 69.3°F (20.7°C). The average low-temperature, in Mountain View, is 49.5°F (9.7°C).

Humidity

In Mountain View, the average relative humidity is 68%.

Rainfall

In Mountain View, California, during May, the rain falls for 3.6 days and regularly aggregates up to 0.2" (5mm) of precipitation. 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 May is 14.2h.

Sunshine

In May, the average sunshine in Mountain View is 10.9h.

UV index

In May, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from the exposure to the Sun's UV rays for the ordinary person.
Note: The daily maximum UV index of 5 in May interpret into the following advice:
Take precautions - Protection against the skin and eye damage is obliged. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. 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 May in Mountain View?

In May, the average high-temperature is 69.3°F (20.7°C), and the average low-temperature is 49.5°F (9.7°C).

What is the average humidity in May in Mountain View?

In Mountain View, California, the average relative humidity in May is 68%.

How much does it rain in Mountain View in May?

In Mountain View, in May, during 3.6 rainfall days, 0.2" (5mm) of precipitation is typically accumulated.

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

In May, the average length of the day is 14.2h.

How many hours of sunshine does Mountain View have in May?

In May, the average sunshine is 10.9h.

What is the UV index intensity in May in Mountain View?

The average daily maximum UV index in May in Mountain View is 5. A UV Index value of 3 to 5 symbolizes a medium health risk from unsafe exposure to the Sun's UV rays.

Average temperature in May
Mountain View, CA

Average temperature in May - Mountain View, CA
  • Average high temperature in May: 69.3°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 May: 49.5°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 May
Mountain View, CA

Average pressure in May - Mountain View, CA
  • Average pressure in May: 29.98"

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 May
Mountain View, CA

Average wind speed in May - Mountain View, CA
  • Average wind speed in May: 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 May
Mountain View, CA

Average humidity in May - Mountain View, CA
  • Average humidity in May: 68%

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 May
Mountain View, CA

Average rainfall in May - Mountain View, CA
  • Average rainfall in May: 0.2"

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 May
Mountain View, CA

Average rainfall days in May - Mountain View, CA
  • Average rainfall days in May: 3.6 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 May /
Average sunshine in May
Mountain View, CA

Average daylight in May / Average sunshine in May - Mountain View, CA
  • Average daylight in May: 14.2h

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 May: 10.9h

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 May
Mountain View, CA

Average sunshine days in May - Mountain View, CA
  • Average sunshine days in May: 25.8 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 May
Mountain View, CA

Average UV index in May - Mountain View, CA
  • Average UV index in May: 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 May
Mountain View, CA

Average cloud cover in May - Mountain View, CA
  • Average cloud cover in May: 22

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 May
Mountain View, CA

Average visibility in May - Mountain View, CA
  • Average visibility in May: 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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