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
Simi Valley, California, records an average high-temperature of a still comfortable 66.7°F (19.3°C) as April arrives, nearly mirroring the previous month's climate. During the nights in April, the temperature averages to a cool 50.4°F (10.2°C).Humidity
In April, the average relative humidity is 60%.Rainfall
In Simi Valley, in April, it is raining for 6.2 days, with typically 0.63" (16mm) of accumulated precipitation. In Simi Valley, during the entire year, the rain falls for 53.7 days and collects up to 9.61" (244mm) 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 6:41 am and sunset at 7:16 pm. On the last day of April, in Simi Valley, sunrise is at 6:05 am and sunset at 7:38 pm PDT.
Sunshine
In Simi Valley, the average sunshine in April is 11h.UV index
The average daily maximum UV index in April is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for the average person.Note: A daily maximum UV index of 5 in April translates into the following instructions:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Simi Valley in April?
What is the average humidity in April?
How many days does it rain in April?
How many hours of daylight does Simi Valley have in April?
What time are sunrise and sunset in April?
How many hours of sunshine does Simi Valley have in April?
What is the UV index reading in April?
Average temperature in April
Simi Valley, CA
- Average high temperature in April: 66.7°F
The warmest month (with the highest average high temperature) is August (82.2°F).
The month with the lowest average high temperature is December (60.1°F).
- Average low temperature in April: 50.4°F
The month with the highest average low temperature is August (63.1°F).
The coldest month (with the lowest average low temperature) is December (46.4°F).
Average pressure in April
Simi Valley, CA
- Average pressure in April: 29.98"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The months with the lowest atmospheric pressure are June and September (29.9"Hg).
Average wind speed in April
Simi Valley, CA
- Average wind speed in April: 6.2mph
The windiest month (with the highest average wind speed) is December (6.5mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).
Average humidity in April
Simi Valley, CA
- Average humidity in April: 60%
The month with the highest relative humidity is June (62%).
The month with the lowest relative humidity is November (50%).
Average rainfall in April
Simi Valley, CA
- Average rainfall in April: 0.63"
The wettest month (with the highest rainfall) is February (1.93").
The driest month (with the least rainfall) is June (0.08").
Average rainfall days in April
Simi Valley, CA
- Average rainfall days in April: 6.2 days
The month with the highest number of rainy days is March (8 days).
The months with the least rainy days are June and August (1.5 days).
Average daylight in April /
Average sunshine in April
Simi Valley, 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 0min
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 48min).
Average sunshine days in April
Simi Valley, CA
- Average sunshine days in April: 22.9 days
The month with the most sunshine days is August (25.4 days).
The month with the least sunshine days is February (20.9 days).
Average UV index in April
Simi Valley, CA
- Average UV index in April: 5
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in April
Simi Valley, CA
- Average cloud cover in April: 17
The month with the most cloud cover is March (Cloud cover 23).
The month with the least cloud cover is August (Cloud cover 5).
Average visibility in April
Simi Valley, 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).
Simi Valley, California, USA
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