May weather forecast
Diablo, CA

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Weather in May

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

Temperature

The transition into May shows a subtle variation to a still pleasant 72.7°F (22.6°C) from April's 68°F (20°C) in the average high-temperature. In Diablo, the May nights descend to a significantly cooler average of 48.7°F (9.3°C) compared to daytime highs.

Humidity

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

Rainfall

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

Daylight

In May, the average length of the day in Diablo is 14h and 14min.
On the first day of May in Diablo, sunrise is at 6:10 am and sunset at 7:58 pm. On the last day of the month, sunrise is at 5:47 am and sunset at 8:23 pm PDT.

Sunshine

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

UV index

In Diablo, the average daily maximum UV index in May is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for average individuals.
Note: The maximum daily UV index of 5 in May converts into the following recommendations:
Be vigilant - Suggestions to stave off sun damage are provided. The Sun's radiation is especially intense around midday; try to stay in shade during this period. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.
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Frequently asked questions

What is the average May temperature in Diablo?

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

What is the average humidity in May in Diablo?

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

How much does it rain in Diablo in May?

In Diablo, California, during May, the rain falls for 4.3 days and regularly aggregates up to 0.55" (14mm) of precipitation.

What is the average length of the day in May in Diablo?

In May, the average day length is 14h and 14min.

When is the sunrise / sunset in May in Diablo?

On the first day of May, sunrise is at 6:10 am and sunset at 7:58 pm. On the last day of the month, sunrise is at 5:47 am and sunset at 8:23 pm PDT.

How many hours of sunshine does Diablo have in May?

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

What is the UV index intensity in May in Diablo?

The average daily maximum UV index in May in Diablo, California, is 5. A UV Index of 3 to 5 symbolizes a medium health risk from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

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

The 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"Hg

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

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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: 14h 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 May: 10h and 5min

The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).

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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

The months with the highest UV index are June, July and August (UV index 6).
The 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

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).

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Diablo, California, USA

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