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 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
Westmont's average high-temperature in April is an agreeable 68.9°F (20.5°C), marking an insignificant difference from the 66.6°F (19.2°C) of March. An average low-temperature of 54.5°F (12.5°C) is expected during April.Humidity
In April, the average relative humidity in Westmont is 62%.Rainfall
In Westmont, California, in April, during 4.5 rainfall days, 0.39" (10mm) of precipitation is typically accumulated. Throughout the year, there are 47.6 rainfall days, and 7.24" (184mm) of precipitation is accumulated.Daylight
The average length of the day in April is 13h and 4min.On the first day of April in Westmont, California, sunrise is at 6:39 am and sunset at 7:14 pm. On the last day of the month, sunrise is at 6:04 am and sunset at 7:36 pm PDT.
Sunshine
In Westmont, the average sunshine in April is 10.9h.UV index
The average daily maximum UV index in April in Westmont, California, is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: A typical high UV index of 5 in April suggests the following recommendations:
Preventative actions are necessary - The mandate to avoid skin and eye damage is in place. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.
Frequently asked questions
What is the usual temperature for Westmont in April?
What is the average humidity in April in Westmont?
How many days does it rain in April in Westmont?
What is the average length of the day in April in Westmont?
What time are sunrise and sunset in April in Westmont?
How long on average sun shines in April in Westmont?
What is the UV index reading in April in Westmont?
Average temperature in April
Westmont, CA
- Average high temperature in April: 68.9°F
The warmest month (with the highest average high temperature) is August (80.2°F).
The month with the lowest average high temperature is December (64°F).
- Average low temperature in April: 54.5°F
The month with the highest average low temperature is August (64.9°F).
The coldest month (with the lowest average low temperature) is February (51.1°F).
Average pressure in April
Westmont, CA
- Average pressure in April: 29.98"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in April
Westmont, CA
- Average wind speed in April: 6.4mph
The windiest month (with the highest average wind speed) is April (6.4mph).
The calmest month (with the lowest average wind speed) is September (4.9mph).
Average humidity in April
Westmont, CA
- Average humidity in April: 62%
The month with the highest relative humidity is June (70%).
The month with the lowest relative humidity is November (54%).
Average rainfall in April
Westmont, CA
- Average rainfall in April: 0.39"
The wettest month (with the highest rainfall) is January (1.42").
The driest month (with the least rainfall) is June (0.08").
Average rainfall days in April
Westmont, CA
- Average rainfall days in April: 4.5 days
The month with the highest number of rainy days is March (6.5 days).
The month with the least rainy days is June (1.7 days).
Average daylight in April /
Average sunshine in April
Westmont, 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: 10h and 5min
The months with the most sunshine are July and August (Average sunshine: 11h and 54min).
The month with the least sunshine is December (Average sunshine: 6h and 42min).
Average sunshine days in April
Westmont, CA
- Average sunshine days in April: 24.1 days
The month with the most sunshine days is October (25.5 days).
The month with the least sunshine days is June (21.4 days).
Average UV index in April
Westmont, 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
Westmont, CA
- Average cloud cover in April: 19
The months with the most cloud cover are March and December (Cloud cover 22).
The month with the least cloud cover is August (Cloud cover 7).
Average visibility in April
Westmont, 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).
Westmont, California, USA
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