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
May brings an average high-temperature of a still pleasant 72.3°F (22.4°C), showing a slight difference from April's 68°F (20°C). Walnut Creek witnesses a consistent, sharp contrast from the daytime highs, with an average low-temperature of 50.2°F (10.1°C) throughout May.Humidity
The average relative humidity in May is 64%.Rainfall
In Walnut Creek, in May, it is raining for 4.2 days, with typically 0.51" (13mm) of accumulated precipitation. Throughout the year, there are 68.7 rainfall days, and 11.26" (286mm) of precipitation is accumulated.Daylight
In Walnut Creek, the average length of the day in May is 14h and 14min.On the first day of May, sunrise is at 6:11 am and sunset at 7:59 pm. On the last day of the month, sunrise is at 5:47 am and sunset at 8:24 pm PDT.
Sunshine
In Walnut Creek, the average sunshine in May is 10.9h.UV index
The average daily maximum UV index in May in Walnut Creek is 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for average individuals.Note: In May, the maximum UV index of 5 translates into these guidelines:
Undertake precautions - Guarding against sun damage is counselled. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. Enhance your sun protection with tightly woven, yet airy clothing.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average May temperature in Walnut Creek?
What is the average humidity in May in Walnut Creek?
How many days does it rain in May in Walnut Creek?
How many hours of daylight does Walnut Creek have in May?
When is the sunrise / sunset in May in Walnut Creek?
How many hours of sunshine does Walnut Creek have in May?
What is the UV index reading in May in Walnut Creek?
Average temperature in May
Walnut Creek, CA
- Average high temperature in May: 72.3°F
The warmest month (with the highest average high temperature) is July (82.8°F).
The month with the lowest average high temperature is December (55.4°F).
- Average low temperature in May: 50.2°F
The month with the highest average low temperature is September (57.2°F).
The coldest months (with the lowest average low temperature) are January and December (42.4°F).
Average pressure in May
Walnut Creek, CA
- Average pressure in May: 29.97"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in May
Walnut Creek, 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 (4.4mph).
Average humidity in May
Walnut Creek, CA
- Average humidity in May: 64%
The month with the highest relative humidity is March (74%).
The months with the lowest relative humidity are September and October (58%).
Average rainfall in May
Walnut Creek, CA
- Average rainfall in May: 0.51"
The wettest month (with the highest rainfall) is February (2.4").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in May
Walnut Creek, CA
- Average rainfall days in May: 4.2 days
The month with the highest number of rainy days is March (12.6 days).
The month with the least rainy days is August (0.8 days).
Average daylight in May /
Average sunshine in May
Walnut Creek, CA
- Average daylight in May: 14h and 1min
The month with the longest days is June (Average daylight: 14h and 48min).
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 0min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).
Average sunshine days in May
Walnut Creek, CA
- Average sunshine days in May: 26.2 days
The month with the most sunshine days is August (29.6 days).
The month with the least sunshine days is March (17.5 days).
Average UV index in May
Walnut Creek, CA
- Average UV index in May: 5
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in May
Walnut Creek, CA
- Average cloud cover in May: 23
The month with the most cloud cover is March (Cloud cover 36).
The month with the least cloud cover is July (Cloud cover 8).
Average visibility in May
Walnut Creek, 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).
Walnut Creek, California, USA
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