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
The ushering in of April brings an average high-temperature of a still agreeable 72.5°F (22.5°C), closely mirroring the 68.9°F (20.5°C) of March. In Norco, an average temperature of 51.3°F (10.7°C) is noted during April nights.Humidity
The average relative humidity in April is 57%.Rainfall
In Norco, in April, during 6.2 rainfall days, 0.67" (17mm) of precipitation is typically accumulated. In Norco, California, during the entire year, the rain falls for 53.9 days and collects up to 8.86" (225mm) of precipitation.Daylight
The average length of the day in April is 13h and 4min.On the first day of the month, sunrise is at 6:36 am and sunset at 7:11 pm. On the last day of April, sunrise is at 6:01 am and sunset at 7:33 pm PDT.
Sunshine
In April, the average sunshine is 11h.UV index
The average daily maximum UV index in April is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for average individuals.Note: The maximum daily UV index of 5 in April converts into the following recommendations:
Take measures. Individuals with light skin might experience burns in under 30 minutes. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
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 in Norco?
How many days does it rain in April?
What is the average length of the day in April?
When is the sunrise / sunset in April?
How many hours of sunshine does Norco have in April?
What is the UV index intensity in April?
Average temperature in April
Norco, CA
- Average high temperature in April: 72.5°F
The warmest month (with the highest average high temperature) is August (89.4°F).
The month with the lowest average high temperature is December (63.5°F).
- Average low temperature in April: 51.3°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 (46.9°F).
Average pressure in April
Norco, 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 (29.87"Hg).
Average wind speed in April
Norco, CA
- Average wind speed in April: 5.4mph
The windiest months (with the highest average wind speed) are April and May (5.4mph).
The calmest month (with the lowest average wind speed) is September (4.3mph).
Average humidity in April
Norco, CA
- Average humidity in April: 57%
The month with the highest relative humidity is May (60%).
The month with the lowest relative humidity is November (48%).
Average rainfall in April
Norco, CA
- Average rainfall in April: 0.67"
The wettest month (with the highest rainfall) is December (1.89").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days in April
Norco, CA
- Average rainfall days in April: 6.2 days
The month with the highest number of rainy days is March (8.2 days).
The month with the least rainy days is June (1.3 days).
Average daylight in April /
Average sunshine in April
Norco, 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 July and August (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 42min).
Average sunshine days in April
Norco, CA
- Average sunshine days in April: 22.7 days
The month with the most sunshine days is June (27.1 days).
The month with the least sunshine days is February (20.8 days).
Average UV index in April
Norco, CA
- Average UV index in April: 5
The months with the highest UV index are July and August (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 4).
Average cloud cover in April
Norco, CA
- Average cloud cover in April: 19
The months with the most cloud cover are March and December (Cloud cover 23).
The month with the least cloud cover is August (Cloud cover 5).
Average visibility in April
Norco, 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).
Norco, California, USA
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