May weather forecastFoothill Ranch, CA
May
Weather in May
May, the last month of the spring in Foothill Ranch, is another pleasant month, with an average temperature fluctuating between 70.9°F (21.6°C) and 55.2°F (12.9°C).Temperature
Entering May, Foothill Ranch's average high-temperature reads a still agreeable 70.9°F (21.6°C), indicating a close resemblance to the previous month's climate. The average temperature drops to a cool 55.2°F (12.9°C) during the night in the month of May.Humidity
May and June, with an average relative humidity of 69%, are the most humid months.Rainfall
In Foothill Ranch, during May, the rain falls for 6.2 days and regularly aggregates up to 0.39" (10mm) of precipitation. Throughout the year, there are 65.4 rainfall days, and 9.17" (233mm) of precipitation is accumulated.Daylight
In May, the average length of the day is 13h and 55min.On the first day of May, sunrise is at 6:01 am and sunset at 7:34 pm. On the last day of the month, sunrise is at 5:41 am and sunset at 7:55 pm PDT.
Sunshine
The average sunshine in May is 11.1h.UV index
The average daily maximum UV index in May is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: In May, the average maximum UV index of 5 translates into the following recommendations:
Take precautions - Protection against sunburn is recommended. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Foothill Ranch, CA
- Average high temperature in May: 70.9°F
The warmest month (with the highest average high temperature) is August (82°F).
The month with the lowest average high temperature is December (63.1°F).
- Average low temperature in May: 55.2°F
The month with the highest average low temperature is August (64.4°F).
The coldest month (with the lowest average low temperature) is February (48.7°F).
Average pressure in May
Foothill Ranch, 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
Foothill Ranch, 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 months (with the lowest average wind speed) are August and September (4.5mph).
Average humidity in May
Foothill Ranch, CA
- Average humidity in May: 69%
The months with the highest relative humidity are May and June (69%).
The month with the lowest relative humidity is November (55%).
Average rainfall in May
Foothill Ranch, CA
- Average rainfall in May: 0.39"
The wettest month (with the highest rainfall) is December (1.85").
The driest month (with the least rainfall) is June (0.08").
Average rainfall days in May
Foothill Ranch, CA
- Average rainfall days in May: 6.2 days
The month with the highest number of rainy days is March (8.1 days).
The month with the least rainy days is June (2 days).
Average daylight in May /
Average sunshine in May
Foothill Ranch, 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: 11h and 6min
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 36min).
Average sunshine days in May
Foothill Ranch, CA
- Average sunshine days in May: 19.3 days
The months with the most sunshine days are January and October (24.2 days).
The month with the least sunshine days is May (19.3 days).
Average UV index in May
Foothill Ranch, 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
Foothill Ranch, CA
- Average cloud cover in May: 20
The months with the most cloud cover are March and December (Cloud cover 24).
The month with the least cloud cover is August (Cloud cover 6).
Average visibility in May
Foothill Ranch, 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).
