May weather forecast and climate
Diablo, CA

Weather in May

May, the last month of the spring, in Diablo, is also an agreeable month, with average temperature ranging between max 72.7°F (22.6°C) and min 48.7°F (9.3°C).

Temperature

In Diablo, the average high-temperature is practically the same as in April - a still pleasant 72.7°F (22.6°C). The average low-temperature, in May, is 48.7°F (9.3°C).

Humidity

In May, the average relative humidity in Diablo, California, is 64%.

Rainfall

In May, in Diablo, the rain falls for 4.3 days. Throughout May, 0.55" (14mm) of precipitation is accumulated. Throughout the year, there are 65.6 rainfall days, and 11.22" (285mm) of precipitation is accumulated.

Daylight

The average length of the day in Diablo is 14.2h.

Sunshine

The average sunshine in Diablo is 10.8h.

UV index

In May, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to the UV radiation for the ordinary person.
Note: In May, the average maximum UV index of 5 translate into the following recommendations:
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. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the temperature in May in Diablo?

In Diablo, in May, the average high-temperature is 72.7°F (22.6°C), and the average low-temperature is 48.7°F (9.3°C).

What is the average humidity in May in Diablo?

In Diablo, the average relative humidity in May is 64%.

How much does it rain in Diablo in May?

In May, in Diablo, California, the rain falls for 4.3 days. Throughout May, 0.55" (14mm) of precipitation is accumulated.

How many hours of daylight does Diablo have in May?

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

How long on average sun shines in May in Diablo?

In May, the average sunshine in Diablo is 10.8h.

What is the UV index intensity in May in Diablo?

The average daily maximum UV index in May is 5. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from the exposure to the Sun's UV rays.

Average temperature in May
Diablo, CA

Average temperature in May - Diablo, CA
  • Average high temperature in May: 72.7°F

The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is December (55.8°F).

  • Average low temperature in May: 48.7°F

Months with the highest average low temperature are August and September (56.7°F).
The coldest month (with the lowest average low temperature) is January (42.1°F).

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Average pressure in May
Diablo, CA

Average pressure in May - Diablo, CA
  • Average pressure in May: 29.98"

The month with the highest atmospheric pressure is January (30.14").
Months with the lowest atmospheric pressure are June, August and September (29.92").

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Average wind speed in May
Diablo, CA

Average wind speed in May - Diablo, CA
  • Average wind speed in May: 6.9mph

The windiest month (with the highest average wind speed) is May (6.9mph).
The calmest month (with the lowest average wind speed) is November (4.3mph).

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Average humidity in May
Diablo, CA

Average humidity in May - Diablo, CA
  • Average humidity in May: 64%

The month with the highest relative humidity is March (74%).
The month with the lowest relative humidity is September (57%).

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Average rainfall in May
Diablo, CA

Average rainfall in May - Diablo, CA
  • Average rainfall in May: 0.55"

The wettest month (with the highest rainfall) is February (2.36").
The driest months (with the least rainfall) are July and August (0").

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Average rainfall days in May
Diablo, CA

Average rainfall days in May - Diablo, CA
  • Average rainfall days in May: 4.3 days

The month with the highest number of rainy days is March (12.6 days).
The month with the least rainy days is August (0.6 days).

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Average daylight in May /
Average sunshine in May
Diablo, CA

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

The month with the longest days is June (Average daylight: 14.8h).
The month with the shortest days is December (Average daylight: 9.6h).

  • Average sunshine in May: 10.8h

The month with the most sunshine is July (Average sunshine: 12.1h).
The month with the least sunshine is December (Average sunshine: 5.8h).

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Average sunshine days in May
Diablo, CA

Average sunshine days in May - Diablo, CA
  • Average sunshine days in May: 26 days

The month with the most sunshine days is July (30.2 days).
The month with the least sunshine days is March (17.6 days).

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Average UV index in May
Diablo, CA

Average UV index in May - Diablo, CA
  • Average UV index in May: 5

Months with the highest UV index are June, July and August (UV index 6).
Months with the lowest UV index are January, February, November and December (UV index 3).

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Average cloud cover in May
Diablo, CA

Average cloud cover in May - Diablo, CA
  • Average cloud cover in May: 22

The month with the most cloud cover is March (Cloud cover 36).
The month with the least cloud cover is July (Cloud cover 6).

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Average visibility in May
Diablo, CA

Average visibility in May - Diablo, 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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