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
With the onset of May, a modest change to an agreeable 69.3°F (20.7°C) from April's 66.2°F (19°C) is noted in high-temperature. During the nights in May, the temperature in Los Altos averages to a frosty 49.5°F (9.7°C).Humidity
The average relative humidity in May is 68%.Rainfall
In Los Altos, in May, it is raining for 3.6 days, with typically 0.2" (5mm) of accumulated precipitation. In Los Altos, during the entire year, the rain falls for 53.1 days and collects up to 4.41" (112mm) of precipitation.Daylight
The average length of the day in May in Los Altos, California, is 14h and 12min.On the first day of May in Los Altos, sunrise is at 6:12 am and sunset at 7:58 pm. On the last day of the month, sunrise is at 5:49 am and sunset at 8:23 pm PDT.
Sunshine
In May, the average sunshine in Los Altos is 10.9h.UV index
In May, the average daily maximum UV index in Los Altos, California, is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for the average person.Note: The daily high UV index of 5 in May translates into this advice:
Take measures. Individuals with light skin might experience burns in under 30 minutes. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Los Altos in May?
What is the average humidity in May in Los Altos?
How much does it rain in Los Altos in May?
How many hours of daylight does Los Altos have in May?
When is the sunrise / sunset in May in Los Altos?
How long on average sun shines in May in Los Altos?
How high is the UV index in May in Los Altos?
Average temperature in May
Los Altos, CA
- Average high temperature in May: 69.3°F
The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is December (56.5°F).
- Average low temperature in May: 49.5°F
The month with the highest average low temperature is August (56.8°F).
The coldest month (with the lowest average low temperature) is December (44.1°F).
Average pressure in May
Los Altos, 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 and September (29.92"Hg).
Average wind speed in May
Los Altos, CA
- Average wind speed in May: 6.2mph
The windiest months (with the highest average wind speed) are April and May (6.2mph).
The calmest months (with the lowest average wind speed) are August, September, October and November (4.7mph).
Average humidity in May
Los Altos, CA
- Average humidity in May: 68%
The month with the highest relative humidity is March (73%).
The months with the lowest relative humidity are July, September and October (63%).
Average rainfall in May
Los Altos, CA
- Average rainfall in May: 0.2"
The wettest months (with the highest rainfall) are February, March and December (0.83").
The driest months (with the least rainfall) are June, July and August (0.04").
Average rainfall days in May
Los Altos, CA
- Average rainfall days in May: 3.6 days
The month with the highest number of rainy days is March (10 days).
The month with the least rainy days is August (0.4 days).
Average daylight in May /
Average sunshine in May
Los Altos, 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 months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 54min).
Average sunshine days in May
Los Altos, CA
- Average sunshine days in May: 25.8 days
The months with the most sunshine days are July and August (29.8 days).
The month with the least sunshine days is March (19.4 days).
Average UV index in May
Los Altos, CA
- Average UV index in May: 5
The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are February, November and December (UV index 3).
Average cloud cover in May
Los Altos, CA
- Average cloud cover in May: 22
The month with the most cloud cover is March (Cloud cover 35).
The month with the least cloud cover is July (Cloud cover 7).
Average visibility in May
Los Altos, 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).
Los Altos, California, USA
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