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 transition into April notes an average high-temperature of a still pleasant 72.1°F (22.3°C), revealing a mild distinction from the 68°F (20°C) in March. South Pasadena experiences a consistent average temperature of 51.6°F (10.9°C) throughout the nights in April.Humidity
In South Pasadena, the average relative humidity in April is 55%.Rainfall
In April, the rain falls for 5.2 days. Throughout April, 0.55" (14mm) of precipitation is accumulated. In South Pasadena, during the entire year, the rain falls for 49.2 days and collects up to 8.23" (209mm) of precipitation.Snowfall
In South Pasadena, snow does not fall in January through November.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
The average sunshine in April is 11.3h.UV index
In South Pasadena, the average daily maximum UV index in April is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the ordinary person.Note: During April, 5 as the daily maximum UV index converts into the following advice:
Undertake precautions - Guarding against sun damage is counselled. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in April?
What is the average humidity in April?
How much does it rain in April?
When it does not snow?
What is the average length of the day in April?
What time are sunrise and sunset in April in South Pasadena?
How many hours of sunshine does South Pasadena have in April?
What is the UV index intensity in April?
Average temperature in April
South Pasadena, CA
- Average high temperature in April: 72.1°F
The warmest month (with the highest average high temperature) is August (86.7°F).
The month with the lowest average high temperature is December (63.1°F).
- Average low temperature in April: 51.6°F
The month with the highest average low temperature is August (65.7°F).
The coldest months (with the lowest average low temperature) are February and December (47.8°F).
Average pressure in April
South Pasadena, 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
South Pasadena, 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
South Pasadena, 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
South Pasadena, CA
- Average rainfall in April: 0.55"
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
South Pasadena, CA
- Average rainfall days in April: 5.2 days
The month with the highest number of rainy days is March (7.7 days).
The month with the least rainy days is June (1 days).
Average snowfall days in April
South Pasadena, CA
- Average snowfall days in April: 0 days
The month with the highest number of snowfall days is December (0.1 days).
The months with the least snowfall days are January, February, March, April, May, June, July, August, September, October and November (0 days).
Average daylight in April /
Average sunshine in April
South Pasadena, 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 months with the most sunshine are June and 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
South Pasadena, CA
- Average sunshine days in April: 23.4 days
The month with the most sunshine days is August (28.3 days).
The month with the least sunshine days is February (21 days).
Average UV index in April
South Pasadena, 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
South Pasadena, CA
- Average cloud cover in April: 17
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 4).
Average visibility in April
South Pasadena, 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).
South Pasadena, California, USA
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