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 commencement of April introduces an average high-temperature of a still agreeable 73.2°F (22.9°C), closely mirroring the preceding month. Walnut's temperature in April lowers to a consistent average of 52.2°F (11.2°C) during the nights.Humidity
In April, the average relative humidity is 54%.Rainfall
In Walnut, in April, it is raining for 5.1 days, with typically 0.55" (14mm) of accumulated precipitation. In Walnut, during the entire year, the rain falls for 43.1 days and collects up to 6.89" (175mm) 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 6:37 am and sunset at 7:12 pm. On the last day of April, sunrise is at 6:02 am and sunset at 7:34 pm PDT.
Sunshine
The average sunshine in April is 11.3h.UV index
In April, the average daily maximum UV index in Walnut is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for the average person.Note: An average maximum UV index of 5 in April leads to these recommendations:
Undertake precautions - It is suggested to shield oneself from sunburn. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.
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 Walnut?
How much does it rain in April?
What is the average length of the day in April?
What time are sunrise and sunset in April?
How many hours of sunshine does Walnut have in April?
What is the UV index reading in April?
Average temperature in April
Walnut, CA
- Average high temperature in April: 73.2°F
The warmest month (with the highest average high temperature) is August (89.2°F).
The month with the lowest average high temperature is December (63.7°F).
- Average low temperature in April: 52.2°F
The month with the highest average low temperature is August (66.2°F).
The coldest months (with the lowest average low temperature) are February and December (47.7°F).
Average pressure in April
Walnut, CA
- Average pressure in April: 29.96"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
Walnut, CA
- Average wind speed in April: 5.7mph
The windiest months (with the highest average wind speed) are April and May (5.7mph).
The calmest month (with the lowest average wind speed) is September (4.5mph).
Average humidity in April
Walnut, CA
- Average humidity in April: 54%
The months with the highest relative humidity are May and June (56%).
The month with the lowest relative humidity is November (45%).
Average rainfall in April
Walnut, CA
- Average rainfall in April: 0.55"
The wettest month (with the highest rainfall) is December (1.57").
The driest months (with the least rainfall) are June and August (0.04").
Average rainfall days in April
Walnut, CA
- Average rainfall days in April: 5.1 days
The month with the highest number of rainy days is March (6.6 days).
The month with the least rainy days is June (1 days).
Average daylight in April /
Average sunshine in April
Walnut, 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 month with the least sunshine is February (Average sunshine: 6h and 48min).
Average sunshine days in April
Walnut, CA
- Average sunshine days in April: 24.1 days
The month with the most sunshine days is June (28.6 days).
The month with the least sunshine days is February (22 days).
Average UV index in April
Walnut, 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
Walnut, CA
- Average cloud cover in April: 17
The months with the most cloud cover are February, March and December (Cloud cover 21).
The month with the least cloud cover is August (Cloud cover 5).
Average visibility in April
Walnut, 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).
Walnut, California, USA
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