Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
Weather in May
Temperature
The shift into May finds Diablo at an average high-temperature of a still agreeable 72.7°F (22.6°C), closely comparable to April's conditions. Despite high daytime temperatures, the average temperature lowers to a chilly 48.7°F (9.3°C) during May nights.Humidity
The average relative humidity in May is 64%.Rainfall
In Diablo, in May, during 4.3 rainfall days, 0.55" (14mm) of precipitation is typically 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 May is 14h and 14min.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.
Sunshine
The average sunshine in May 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 medium vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: In May, the maximum UV index of 5 suggests these recommendations:
Prioritize safety - Suggestions to prevent sun damage are offered. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in May?
What is the average humidity in May?
How many days does it rain in May?
How many hours of daylight does Diablo have in May?
When is the sunrise / sunset in May?
How many hours of sunshine does Diablo have in May?
What is the UV index reading in May?
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).
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).
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).
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%).
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").
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).
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).
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).
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).
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).
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).
Diablo, California, USA
Weather forecast for your location
2. Allow the app to use your location