Contents
- Weather in April
- Frequently asked questions
- Average temperature in April
- Average pressure in April
- Average wind speed in April
- Average humidity in April
- Average rainfall in April
- Average rainfall days in April
- Average snowfall days in April
- Average daylight in April
- Average sunshine in April
- Average sunshine days in April
- Average UV index in April
- Average cloud cover in April
- Average visibility in April
Weather in April
Temperature
The introduction of April sees an average high-temperature of a still pleasant 72.9°F (22.7°C), hardly deviating from March. Marked by a significant temperature drop from daytime highs, the average nighttime temperature lowers to a cool 50.2°F (10.1°C) throughout April.Humidity
The average relative humidity in April is 52%.Rainfall
In San Antonio Heights, in April, during 5.7 rainfall days, 0.71" (18mm) of precipitation is typically accumulated. In San Antonio Heights, during the entire year, the rain falls for 49.6 days and collects up to 7.8" (198mm) of precipitation.Snowfall
January, March through December are months without snowfall.Daylight
In San Antonio Heights, California, the average length of the day in April is 13h and 4min.On the first day of April, sunrise is at 6:36 am and sunset at 7:11 pm. On the last day of the month, sunrise is at 6:01 am and sunset at 7:34 pm PDT.
Sunshine
In April, the average sunshine is 11.4h.UV index
The average daily maximum UV index in April is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: The daily maximum UV index of 5 in April interprets into the following advice:
Guard yourself - An obligation to protect skin and eyes from harm exists. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are April temperatures?
What is the average humidity in April?
How many days does it rain in April?
When it does not snow?
How many hours of daylight does San Antonio Heights have in April?
When are sunrise and sunset in April in San Antonio Heights?
How many hours of sunshine does San Antonio Heights have in April?
What is the UV index intensity in April?
Average temperature in April
San Antonio Heights, CA
- Average high temperature in April: 72.9°F
The warmest month (with the highest average high temperature) is August (91°F).
The month with the lowest average high temperature is December (62.1°F).
- Average low temperature in April: 50.2°F
The month with the highest average low temperature is August (65.8°F).
The coldest month (with the lowest average low temperature) is December (45.5°F).
Average pressure in April
San Antonio Heights, CA
- Average pressure in April: 29.95"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed in April
San Antonio Heights, CA
- Average wind speed in April: 5.8mph
The windiest months (with the highest average wind speed) are April and May (5.8mph).
The calmest month (with the lowest average wind speed) is September (4.4mph).
Average humidity in April
San Antonio Heights, CA
- Average humidity in April: 52%
The months with the highest relative humidity are March and May (54%).
The month with the lowest relative humidity is August (42%).
Average rainfall in April
San Antonio Heights, CA
- Average rainfall in April: 0.71"
The wettest month (with the highest rainfall) is February (1.77").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days in April
San Antonio Heights, CA
- Average rainfall days in April: 5.7 days
The month with the highest number of rainy days is March (7.1 days).
The month with the least rainy days is June (1.2 days).
Average snowfall days in April
San Antonio Heights, CA
- Average snowfall days in April: 0 days
The month with the highest number of snowfall days is February (0.1 days).
The months with the least snowfall days are January, March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight in April /
Average sunshine in April
San Antonio Heights, CA
- Average daylight in April: 13h and 1min
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 2min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The months with the least sunshine are February and December (Average sunshine: 6h and 54min).
Average sunshine days in April
San Antonio Heights, CA
- Average sunshine days in April: 23.8 days
The month with the most sunshine days is June (28.2 days).
The month with the least sunshine days is February (21.5 days).
Average UV index in April
San Antonio Heights, CA
- Average UV index in April: 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 April
San Antonio Heights, CA
- Average cloud cover in April: 17
The month with the most cloud cover is December (Cloud cover 21).
The month with the least cloud cover is August (Cloud cover 5).
Average visibility in April
San Antonio Heights, 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).
San Antonio Heights, California, USA
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