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 advent of May brings an average high-temperature of a pleasant 68°F (20°C), almost identical to the preceding month. Piedmont, during May nights, observes an average temperature of 50.5°F (10.3°C).Humidity
The average relative humidity in May in Piedmont is 70%.Rainfall
In May, the rain falls for 4 days. Throughout May, 0.28" (7mm) of precipitation is accumulated. In Piedmont, during the entire year, the rain falls for 55.6 days and collects up to 5.24" (133mm) of precipitation.Daylight
The average length of the day in May is 14h and 14min.On the first day of May in Piedmont, sunrise is at 6:11 am and sunset at 7:59 pm. On the last day of the month, sunrise is at 5:48 am and sunset at 8:25 pm PDT.
Sunshine
In May, the average sunshine in Piedmont, California, is 10.7h.UV index
April through September, with an average maximum UV index of 5, are months with the highest UV index in Piedmont. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the average person.Note: An average UV index of 5 in May transforms into this advice:
Take necessary precautions - Protection from skin and eye injury is mandatory. Minimize direct exposure to the Sun during midday when its radiation is at its peak. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
Frequently asked questions
What is the average May temperature in Piedmont?
What is the average humidity in May in Piedmont?
How much does it rain in Piedmont in May?
How many hours of daylight does Piedmont have in May?
What time are sunrise and sunset in May in Piedmont?
How many hours of sunshine does Piedmont have in May?
When is the highest UV index in Piedmont?
What is the UV index reading in May in Piedmont?
Average temperature in May
Piedmont, CA
- Average high temperature in May: 68°F
The warmest month (with the highest average high temperature) is September (76.6°F).
The month with the lowest average high temperature is December (55.4°F).
- Average low temperature in May: 50.5°F
The month with the highest average low temperature is September (56.8°F).
The coldest month (with the lowest average low temperature) is January (44.2°F).
Average pressure in May
Piedmont, CA
- Average pressure in May: 29.98"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.92"Hg).
Average wind speed in May
Piedmont, CA
- Average wind speed in May: 7.3mph
The windiest month (with the highest average wind speed) is May (7.3mph).
The calmest month (with the lowest average wind speed) is November (5mph).
Average humidity in May
Piedmont, CA
- Average humidity in May: 70%
The month with the highest relative humidity is March (75%).
The month with the lowest relative humidity is October (64%).
Average rainfall in May
Piedmont, CA
- Average rainfall in May: 0.28"
The wettest month (with the highest rainfall) is February (1.1").
The driest months (with the least rainfall) are June, July, August and September (0.08").
Average rainfall days in May
Piedmont, CA
- Average rainfall days in May: 4 days
The month with the highest number of rainy days is March (8.7 days).
The month with the least rainy days is August (1.5 days).
Average daylight in May /
Average sunshine in May
Piedmont, 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 4min
The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).
Average sunshine days in May
Piedmont, CA
- Average sunshine days in May: 23.1 days
The month with the most sunshine days is October (26 days).
The month with the least sunshine days is February (20.5 days).
Average UV index in May
Piedmont, CA
- Average UV index in May: 5
The months with the highest UV index are April, May, June, July, August and September (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in May
Piedmont, CA
- Average cloud cover in May: 25
The month with the most cloud cover is March (Cloud cover 36).
The month with the least cloud cover is July (Cloud cover 11).
Average visibility in May
Piedmont, 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).
Piedmont, California, USA
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