May weather forecastLake San Marcos, CA
May
Weather in May
May, the last month of the spring in Lake San Marcos, is another pleasant month, with an average temperature ranging between max 70.3°F (21.3°C) and min 53.6°F (12°C).Temperature
May observes an average high-temperature of a still pleasant 70.3°F (21.3°C), marking an insignificant difference from April's 68.5°F (20.3°C). Nighttime temperature experiences an average drop to a fresh 53.6°F (12°C) in May.Humidity
With an average relative humidity of 70%, May is the most humid month.Rainfall
In May, in Lake San Marcos, the rain falls for 4.8 days. Throughout May, 0.35" (9mm) of precipitation is accumulated. Throughout the year, in Lake San Marcos, there are 52.1 rainfall days, and 6.1" (155mm) of precipitation is accumulated.Daylight
The average length of the day in May in Lake San Marcos is 13h and 53min.On the first day of the month, sunrise is at 6:00 am and sunset at 7:31 pm. On the last day of May, in Lake San Marcos, sunrise is at 5:40 am and sunset at 7:52 pm PDT.
Sunshine
The average sunshine in May is 11.2h.UV index
The average daily maximum UV index in May is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the average person.Note: In May, the average maximum UV index of 5 translates into the following recommendations:
Act with care - The suggestion to avoid sunburn is emphasized. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. Boost your sun resistance with garments that are densely woven yet spacious.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Lake San Marcos, CA
- Average high temperature in May: 70.3°F
The warmest month (with the highest average high temperature) is August (81.9°F).
The months with the lowest average high temperature are February and December (63.3°F).
- Average low temperature in May: 53.6°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°F).
Average pressure in May
Lake San Marcos, CA
- Average pressure in May: 29.91"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in May
Lake San Marcos, CA
- Average wind speed in May: 5.5mph
The windiest month (with the highest average wind speed) is April (5.7mph).
The calmest month (with the lowest average wind speed) is October (4.4mph).
Average humidity in May
Lake San Marcos, CA
- Average humidity in May: 70%
The month with the highest relative humidity is May (70%).
The month with the lowest relative humidity is November (56%).
Average rainfall in May
Lake San Marcos, CA
- Average rainfall in May: 0.35"
The wettest month (with the highest rainfall) is December (1.22").
The driest month (with the least rainfall) is June (0.08").
Average rainfall days in May
Lake San Marcos, CA
- Average rainfall days in May: 4.8 days
The month with the highest number of rainy days is March (7.8 days).
The month with the least rainy days is June (1.2 days).
Average daylight in May /
Average sunshine in May
Lake San Marcos, CA
- Average daylight in May: 13h and 54min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in May: 11h and 12min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 48min).
Average sunshine days in May
Lake San Marcos, CA
- Average sunshine days in May: 21.3 days
The month with the most sunshine days is August (25.8 days).
The month with the least sunshine days is February (20 days).
Average UV index in May
Lake San Marcos, 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
Lake San Marcos, CA
- Average cloud cover in May: 19
The months with the most cloud cover are March and December (Cloud cover 23).
The month with the least cloud cover is August (Cloud cover 7).
Average visibility in May
Lake San Marcos, 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).
