April weather forecastSan Marino, CA
April
Weather in April
April, like March, is an agreeable spring month in San Marino, California, with an average temperature ranging between min 51.4°F (10.8°C) and max 72.1°F (22.3°C).Temperature
The shift into April finds San Marino at an average high-temperature of a still pleasant 72.1°F (22.3°C), closely comparable to March's conditions. In the month of April, San Marino's average low-temperature falls to a cool 51.4°F (10.8°C).Humidity
In San Marino, the average relative humidity in April is 55%.Rainfall
In San Marino, in April, during 4.6 rainfall days, 0.51" (13mm) of precipitation is typically accumulated. In San Marino, during the entire year, the rain falls for 45 days and collects up to 6.61" (168mm) of precipitation.Daylight
In April, the average length of the day is 13h and 4min.On the first day of the month, sunrise is at 6:38 am and sunset at 7:13 pm. On the last day of April, sunrise is at 6:03 am and sunset at 7:36 pm PDT.
Sunshine
In San Marino, the average sunshine in April is 11.3h.UV index
In San Marino, the average daily maximum UV index in April is 5. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the ordinary person.Note: The maximum daily UV index of 5 during April translates into the following directions:
Undertake protective steps - Obligation to safeguard skin and eyes from harm is in place. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
San Marino, CA
- Average high temperature in April: 72.1°F
The warmest month (with the highest average high temperature) is August (87.1°F).
The month with the lowest average high temperature is December (63.1°F).
- Average low temperature in April: 51.4°F
The month with the highest average low temperature is August (64.8°F).
The coldest month (with the lowest average low temperature) is February (47.1°F).
Average pressure in April
San Marino, CA
- Average pressure in April: 29.97"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 April
San Marino, CA
- Average wind speed in April: 5.7mph
The windiest month (with the highest average wind speed) is April (5.7mph).
The calmest month (with the lowest average wind speed) is September (4.4mph).
Average humidity in April
San Marino, CA
- Average humidity in April: 55%
The month with the highest relative humidity is June (59%).
The month with the lowest relative humidity is November (47%).
Average rainfall in April
San Marino, CA
- Average rainfall in April: 0.51"
The wettest month (with the highest rainfall) is December (1.34").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days in April
San Marino, CA
- Average rainfall days in April: 4.6 days
The month with the highest number of rainy days is March (5.8 days).
The month with the least rainy days is June (1.2 days).
Average daylight in April /
Average sunshine in April
San Marino, CA
- Average daylight in April: 13h and 6min
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 April: 11h and 18min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The months with the least sunshine are January, February and December (Average sunshine: 6h and 54min).
Average sunshine days in April
San Marino, CA
- Average sunshine days in April: 24.8 days
The month with the most sunshine days is June (27.1 days).
The month with the least sunshine days is February (22.3 days).
Average UV index in April
San Marino, CA
- Average UV index in April: 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 April
San Marino, CA
- Average cloud cover in April: 16
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 April
San Marino, CA
- Average visibility in April: 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).
