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
In May, San Dimas experiences a barely noticeable shift in meteorological conditions, with average high-temperatures moving from 72.3°F (22.4°C) in April to a warm 75.7°F (24.3°C). Despite soaring daytime temperatures, San Dimas registers a consistent average low-temperature of 54°F (12.2°C) in May.Humidity
March and May, with an average relative humidity of 55%, are the most humid months.Rainfall
In May, in San Dimas, the rain falls for 3.4 days. Throughout May, 0.24" (6mm) of precipitation is accumulated. Throughout the year, there are 45.2 rainfall days, and 6.5" (165mm) of precipitation is accumulated.Daylight
In May, the average length of the day in San Dimas is 13h and 57min.On the first day of the month, sunrise is at 6:00 am and sunset at 7:35 pm. On the last day of May, in San Dimas, sunrise is at 5:40 am and sunset at 7:57 pm PDT.
Sunshine
In May, the average sunshine in San Dimas is 11.8h.UV index
The average daily maximum UV index in May in San Dimas 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, a regular UV index of 5 translates into these guidelines:
Put precautions into practice - Guidance to elude sunburn is provided. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
Frequently asked questions
What are the temperatures in San Dimas in May?
What is the most humid month in San Dimas?
What is the average humidity in May in San Dimas?
How many days does it rain in May in San Dimas?
How many hours of daylight does San Dimas have in May?
When is the sunrise / sunset in May in San Dimas?
How many hours of sunshine does San Dimas have in May?
What is the UV index intensity in May in San Dimas?
Average temperature in May
San Dimas, CA
- Average high temperature in May: 75.7°F
The warmest month (with the highest average high temperature) is August (89.4°F).
The month with the lowest average high temperature is December (62.4°F).
- Average low temperature in May: 54°F
The month with the highest average low temperature is August (64.9°F).
The coldest month (with the lowest average low temperature) is December (45.5°F).
Average pressure in May
San Dimas, 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
San Dimas, 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 (4.3mph).
Average humidity in May
San Dimas, CA
- Average humidity in May: 55%
The months with the highest relative humidity are March and May (55%).
The months with the lowest relative humidity are August and November (45%).
Average rainfall in May
San Dimas, CA
- Average rainfall in May: 0.24"
The wettest month (with the highest rainfall) is February (1.46").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days in May
San Dimas, CA
- Average rainfall days in May: 3.4 days
The month with the highest number of rainy days is March (6.3 days).
The month with the least rainy days is June (1.2 days).
Average daylight in May /
Average sunshine in May
San Dimas, CA
- Average daylight in May: 14h and 0min
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 5min
The months with the most sunshine are June and July (Average sunshine: 12h and 6min).
The months with the least sunshine are January, February and December (Average sunshine: 7h and 0min).
Average sunshine days in May
San Dimas, CA
- Average sunshine days in May: 25.9 days
The month with the most sunshine days is June (27.8 days).
The month with the least sunshine days is February (22 days).
Average UV index in May
San Dimas, CA
- Average UV index in May: 5
The months with the highest UV index are July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in May
San Dimas, CA
- Average cloud cover in May: 12
The months with the most cloud cover are March and December (Cloud cover 21).
The month with the least cloud cover is August (Cloud cover 5).
Average visibility in May
San Dimas, 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).
San Dimas, California, USA
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