May weather forecastRancho Santa Margarita, CA
May
Weather in May
May, the last month of the spring in Rancho Santa Margarita, is another pleasant month, with an average temperature varying between 55.6°F (13.1°C) and 70.2°F (21.2°C).Temperature
Rancho Santa Margarita sees the arrival of May with an average high-temperature of a still agreeable 70.2°F (21.2°C), indicating a subtle variation from April. May's nights observe an average temperature of 55.6°F (13.1°C).Humidity
The months with the highest humidity are May and June, with an average relative humidity of 70%.Rainfall
In Rancho Santa Margarita, during May, the rain falls for 5.5 days and regularly aggregates up to 0.35" (9mm) of precipitation. In Rancho Santa Margarita, during the entire year, the rain falls for 64.2 days and collects up to 5.79" (147mm) of precipitation.Daylight
The average length of the day in May is 13h and 55min.On the first day of the month, sunrise is at 6:00 am and sunset at 7:34 pm. On the last day of May, sunrise is at 5:41 am and sunset at 7:55 pm PDT.
Sunshine
In Rancho Santa Margarita, the average sunshine in May is 10.9h.UV index
In May, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for average individuals.Note: The maximum UV index of 5 during May leads to these instructions:
Put precautions into practice - Ensuring skin and eye safety is a necessity. Avoiding the Sun during its peak radiation time around midday is a healthy practice. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Rancho Santa Margarita, CA
- Average high temperature in May: 70.2°F
The warmest month (with the highest average high temperature) is August (81.1°F).
The month with the lowest average high temperature is December (63°F).
- Average low temperature in May: 55.6°F
The month with the highest average low temperature is August (64.2°F).
The coldest month (with the lowest average low temperature) is February (48.9°F).
Average pressure in May
Rancho Santa Margarita, CA
- Average pressure in May: 29.92"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The months with the lowest atmospheric pressure are June and September (29.88"Hg).
Average wind speed in May
Rancho Santa Margarita, CA
- Average wind speed in May: 5.7mph
The windiest month (with the highest average wind speed) is April (5.8mph).
The calmest month (with the lowest average wind speed) is August (4.5mph).
Average humidity in May
Rancho Santa Margarita, CA
- Average humidity in May: 70%
The months with the highest relative humidity are May and June (70%).
The month with the lowest relative humidity is November (56%).
Average rainfall in May
Rancho Santa Margarita, CA
- Average rainfall in May: 0.35"
The wettest month (with the highest rainfall) is December (1.02").
The driest month (with the least rainfall) is June (0.08").
Average rainfall days in May
Rancho Santa Margarita, CA
- Average rainfall days in May: 5.5 days
The month with the highest number of rainy days is March (8.6 days).
The month with the least rainy days is June (1.9 days).
Average daylight in May /
Average sunshine in May
Rancho Santa Margarita, CA
- Average daylight in May: 13h and 54min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in May: 10h and 54min
The month with the most sunshine is August (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 36min).
Average sunshine days in May
Rancho Santa Margarita, CA
- Average sunshine days in May: 20.3 days
The month with the most sunshine days is January (24.3 days).
The month with the least sunshine days is February (19.8 days).
Average UV index in May
Rancho Santa Margarita, 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, March, November and December (UV index 4).
Average cloud cover in May
Rancho Santa Margarita, CA
- Average cloud cover in May: 23
The months with the most cloud cover are March and December (Cloud cover 25).
The month with the least cloud cover is August (Cloud cover 7).
Average visibility in May
Rancho Santa Margarita, 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).
