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
Walnut experiences a minor change to a moderately hot 75.7°F (24.3°C) in average high-temperature during May, closely reflecting April. May is noted for a mean low-temperature of 55°F (12.8°C).Humidity
May and June, with an average relative humidity of 56%, are the most humid months.Rainfall
In Walnut, in May, during 3.2 rainfall days, 0.16" (4mm) of precipitation is typically accumulated. Throughout the year, there are 43.1 rainfall days, and 6.89" (175mm) of precipitation is accumulated.Daylight
The average length of the day in May in Walnut is 13h and 57min.On the first day of May, sunrise is at 6:01 am and sunset at 7:35 pm. On the last day of the month, sunrise is at 5:41 am and sunset at 7:57 pm PDT.
Sunshine
In Walnut, the average sunshine in May is 11.5h.UV index
In May, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: An average UV index of 5 in May transforms into this advice:
Preventative actions are necessary - Recommendations to ward off sunburn are given. The Sun's radiation is especially intense around midday; try to stay in shade during this period. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in May?
What is the most humid month?
What is the average humidity in May?
How many days does it rain in May?
How many hours of daylight does Walnut have in May?
When is the sunrise / sunset in May?
How long on average sun shines in May?
What is the UV index intensity in May?
Average temperature in May
Walnut, CA
- Average high temperature in May: 75.7°F
The warmest month (with the highest average high temperature) is August (89.2°F).
The month with the lowest average high temperature is December (63.7°F).
- Average low temperature in May: 55°F
The month with the highest average low temperature is August (66.2°F).
The coldest months (with the lowest average low temperature) are February and December (47.7°F).
Average pressure in May
Walnut, CA
- Average pressure in May: 29.91"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in May
Walnut, CA
- Average wind speed in May: 5.7mph
The windiest months (with the highest average wind speed) are April and May (5.7mph).
The calmest month (with the lowest average wind speed) is September (4.5mph).
Average humidity in May
Walnut, CA
- Average humidity in May: 56%
The months with the highest relative humidity are May and June (56%).
The month with the lowest relative humidity is November (45%).
Average rainfall in May
Walnut, CA
- Average rainfall in May: 0.16"
The wettest month (with the highest rainfall) is December (1.57").
The driest months (with the least rainfall) are June and August (0.04").
Average rainfall days in May
Walnut, CA
- Average rainfall days in May: 3.2 days
The month with the highest number of rainy days is March (6.6 days).
The month with the least rainy days is June (1 days).
Average daylight in May /
Average sunshine in May
Walnut, CA
- Average daylight in May: 13h and 5min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in May: 11h and 3min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is February (Average sunshine: 6h and 48min).
Average sunshine days in May
Walnut, CA
- Average sunshine days in May: 26.9 days
The month with the most sunshine days is June (28.6 days).
The month with the least sunshine days is February (22 days).
Average UV index in May
Walnut, CA
- Average UV index in May: 5
The months with the highest UV index are July and August (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 4).
Average cloud cover in May
Walnut, CA
- Average cloud cover in May: 14
The months with the most cloud cover are February, March and December (Cloud cover 21).
The month with the least cloud cover is August (Cloud cover 5).
Average visibility in May
Walnut, 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, California, USA
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