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 in Fullerton notes an average high-temperature of a still agreeable 72.3°F (22.4°C), subtly differing from April's 70.5°F (21.4°C). Fullerton sees an average low-temperature of 56.1°F (13.4°C) during May.Humidity
In Fullerton, the average relative humidity in May is 64%.Rainfall
In May, in Fullerton, the rain falls for 4 days. Throughout May, 0.2" (5mm) of precipitation is accumulated. Throughout the year, in Fullerton, California, there are 52.5 rainfall days, and 7.09" (180mm) of precipitation is accumulated.Daylight
In May, the average length of the day in Fullerton is 13h and 56min.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 May, the average sunshine is 11.3h.UV index
In May, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for average individuals.Note: In May, the UV index of 5 transforms into the following advice:
Guard yourself - An obligation to protect skin and eyes from harm exists. To avoid the Sun's strongest rays, limit exposure around the mid-day period. To cut down UV radiation exposure by about half, sport a wide-brim hat.
Frequently asked questions
What is the temperature in May in Fullerton?
What is the average humidity in May in Fullerton?
How many days does it rain in May in Fullerton?
How many hours of daylight does Fullerton have in May?
When is the sunrise / sunset in May in Fullerton?
How many hours of sunshine does Fullerton have in May?
How high is the UV index in May in Fullerton?
Average temperature in May
Fullerton, CA
- Average high temperature in May: 72.3°F
The warmest month (with the highest average high temperature) is August (83.5°F).
The month with the lowest average high temperature is December (64°F).
- Average low temperature in May: 56.1°F
The month with the highest average low temperature is August (65.5°F).
The coldest month (with the lowest average low temperature) is February (50.2°F).
Average pressure in May
Fullerton, CA
- Average pressure in May: 29.92"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in May
Fullerton, CA
- Average wind speed in May: 5.8mph
The windiest month (with the highest average wind speed) is April (6mph).
The calmest months (with the lowest average wind speed) are September and October (4.7mph).
Average humidity in May
Fullerton, CA
- Average humidity in May: 64%
The month with the highest relative humidity is June (65%).
The month with the lowest relative humidity is November (51%).
Average rainfall in May
Fullerton, CA
- Average rainfall in May: 0.2"
The wettest month (with the highest rainfall) is December (1.54").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days in May
Fullerton, CA
- Average rainfall days in May: 4 days
The month with the highest number of rainy days is March (7.3 days).
The month with the least rainy days is June (1.5 days).
Average daylight in May /
Average sunshine in May
Fullerton, 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 2min
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: 6h and 42min).
Average sunshine days in May
Fullerton, CA
- Average sunshine days in May: 23.6 days
The month with the most sunshine days is August (25.8 days).
The month with the least sunshine days is February (20.6 days).
Average UV index in May
Fullerton, CA
- Average UV index in May: 5
The months with the highest UV index are June, July, August and September (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 4).
Average cloud cover in May
Fullerton, CA
- Average cloud cover in May: 17
The months with the most cloud cover are March and December (Cloud cover 22).
The month with the least cloud cover is August (Cloud cover 5).
Average visibility in May
Fullerton, 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).
Fullerton, California, USA
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