May weather forecast and climate
La Mesa, CA

Weather in May

The last month of the spring, May, is also an agreeable month in La Mesa, California, with temperature in the range of an average high of 70.9°F (21.6°C) and an average low of 54.3°F (12.4°C).

Temperature

In La Mesa, the average high-temperature in May is almost the same as in April - a still pleasant 70.9°F (21.6°C). In La Mesa, the average low-temperature is 54.3°F (12.4°C).

Humidity

With an average relative humidity of 68%, May is the most humid month in La Mesa.

Rainfall

In May, in La Mesa, the rain falls for 4.2 days. Throughout May, 0.39" (10mm) of precipitation is accumulated. In La Mesa, during the entire year, the rain falls for 54.5 days and collects up to 6.57" (167mm) of precipitation.

Daylight

In May, the average length of the day is 13.9h.

Sunshine

The average sunshine in La Mesa is 10.8h.

UV index

In May, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from the exposure to the Sun's UV rays for the ordinary person.
Note: The average daily UV index of 5 transform into the following instructions:
Take precautions - Protection against sunburn is recommended. 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 La Mesa?

In May, in La Mesa, California, the average high-temperature is 70.9°F (21.6°C), and the average low-temperature is 54.3°F (12.4°C).

What is the most humid month in La Mesa?

With an average relative humidity of 68%, May is the most humid month.

What is the average humidity in May in La Mesa?

The average relative humidity in May is 68%.

How much does it rain in La Mesa in May?

In May, the rain falls for 4.2 days. Throughout May, 0.39" (10mm) of precipitation is accumulated.

What is the average length of the day in May in La Mesa?

In May, the average length of the day in La Mesa is 13.9h.

How long on average sun shines in May in La Mesa?

In La Mesa, California, the average sunshine in May is 10.8h.

What is the UV index intensity in May in La Mesa?

In May, the average daily maximum UV index in La Mesa is 5. A UV Index of 3 to 5 symbolizes a moderate health threat from the exposure to the Sun's UV radiation.

Average temperature in May
La Mesa, CA

Average temperature in May - La Mesa, CA
  • Average high temperature in May: 70.9°F

The warmest month (with the highest average high temperature) is August (82.6°F).
The month with the lowest average high temperature is December (64.2°F).

  • Average low temperature in May: 54.3°F

The month with the highest average low temperature is August (65.8°F).
The coldest month (with the lowest average low temperature) is February (48.7°F).

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Average pressure in May
La Mesa, CA

Average pressure in May - La Mesa, CA
  • Average pressure in May: 29.92"

The month with the highest atmospheric pressure is January (30.09").
The month with the lowest atmospheric pressure is June (29.87").

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Average wind speed in May
La Mesa, CA

Average wind speed in May - La Mesa, CA
  • Average wind speed in May: 5.5mph

The windiest month (with the highest average wind speed) is April (5.7mph).
The calmest month (with the lowest average wind speed) is October (4.5mph).

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Average humidity in May
La Mesa, CA

Average humidity in May - La Mesa, CA
  • Average humidity in May: 68%

The month with the highest relative humidity is May (68%).
The month with the lowest relative humidity is November (55%).

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Average rainfall in May
La Mesa, CA

Average rainfall in May - La Mesa, CA
  • Average rainfall in May: 0.39"

The wettest month (with the highest rainfall) is February (1.3").
The driest month (with the least rainfall) is June (0.08").

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Average rainfall days in May
La Mesa, CA

Average rainfall days in May - La Mesa, CA
  • Average rainfall days in May: 4.2 days

The month with the highest number of rainy days is March (7.8 days).
The month with the least rainy days is June (1.4 days).

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Average daylight in May /
Average sunshine in May
La Mesa, CA

Average daylight in May / Average sunshine in May - La Mesa, CA
  • Average daylight in May: 13.9h

The month with the longest days is June (Average daylight: 14.3h).
The month with the shortest days is December (Average daylight: 10h).

  • Average sunshine in May: 10.8h

The month with the most sunshine is July (Average sunshine: 12h).
The month with the least sunshine is December (Average sunshine: 6.7h).

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Average sunshine days in May
La Mesa, CA

Average sunshine days in May - La Mesa, CA
  • Average sunshine days in May: 24.5 days

The month with the most sunshine days is June (28.1 days).
The month with the least sunshine days is February (21 days).

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Average UV index in May
La Mesa, CA

Average UV index in May - La Mesa, CA
  • Average UV index in May: 5

Months with the highest UV index are June, July, August and September (UV index 6).
Months with the lowest UV index are January, February, November and December (UV index 4).

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Average cloud cover in May
La Mesa, CA

Average cloud cover in May - La Mesa, CA
  • Average cloud cover in May: 22

The month with the most cloud cover is March (Cloud cover 24).
The month with the least cloud cover is August (Cloud cover 8).

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Average visibility in May
La Mesa, CA

Average visibility in May - La Mesa, 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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