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 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
In Acton, stepping into April brings a gentle temperature nudge, moving slightly up from March's enjoyable 63.1°F (17.3°C) to an agreeable 68.5°F (20.3°C). A striking difference from the daytime highs is registered during April nights in Acton, with an average temperature of 45.7°F (7.6°C).Humidity
In April, the average relative humidity is 51%.Rainfall
In April, the rain falls for 5 days. Throughout April, 0.55" (14mm) of precipitation is accumulated. In Acton, during the entire year, the rain falls for 51.4 days and collects up to 7.6" (193mm) of precipitation.Snowfall
Months with snowfall are January through April, November and December. April is the last month it regularly snows in Acton. During 0.2 snowfall days, in April, Acton aggregates 0.04" (1mm) of snow. In Acton, during the entire year, snow falls for 1.9 days and aggregates up to 5.98" (152mm) of snow.Daylight
In Acton, California, the average length of the day in April is 13h and 5min.On the first day of April in Acton, sunrise is at 6:38 am and sunset at 7:14 pm. On the last day of the month, sunrise is at 6:02 am and sunset at 7:36 pm PDT.
Sunshine
In Acton, the average sunshine in April is 11.3h.UV index
The average daily maximum UV index in April is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: A typical high UV index of 5 in April suggests the following recommendations:
Make use of precautions - It is urged to ward off sun damage. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Be alert to the fact! The reflection from snow can nearly double the UV radiation of the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average April temperature in Acton?
What is the average humidity in April in Acton?
How much does it rain in Acton in April?
What is the last month it snows in Acton?
What is the average length of the day in April in Acton?
What time are sunrise and sunset in April in Acton?
How long on average sun shines in April in Acton?
How high is the UV index in April in Acton?
Average temperature in April
Acton, CA
- Average high temperature in April: 68.5°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 (55.6°F).
- Average low temperature in April: 45.7°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 (39.2°F).
Average pressure in April
Acton, CA
- Average pressure in April: 29.96"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in April
Acton, CA
- Average wind speed in April: 7.6mph
The windiest month (with the highest average wind speed) is April (7.6mph).
The calmest month (with the lowest average wind speed) is September (5.7mph).
Average humidity in April
Acton, CA
- Average humidity in April: 51%
The months with the highest relative humidity are February, March and December (54%).
The month with the lowest relative humidity is August (38%).
Average rainfall in April
Acton, CA
- Average rainfall in April: 0.55"
The wettest month (with the highest rainfall) is December (1.65").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days in April
Acton, CA
- Average rainfall days in April: 5 days
The month with the highest number of rainy days is March (7.4 days).
The month with the least rainy days is June (1.2 days).
Average snowfall in April
Acton, CA
- Average snowfall in April: 0.04"
The month with the highest snowfall is December (3.23").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in April
Acton, CA
- Average snowfall days in April: 0.2 days
The month with the highest number of snowfall days is February (0.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in April /
Average sunshine in April
Acton, 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 January (Average sunshine: 6h and 42min).
Average sunshine days in April
Acton, CA
- Average sunshine days in April: 24.8 days
The month with the most sunshine days is June (28.3 days).
The month with the least sunshine days is February (21.3 days).
Average UV index in April
Acton, 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 3).
Average cloud cover in April
Acton, CA
- Average cloud cover in April: 16
The months with the most cloud cover are March and December (Cloud cover 24).
The month with the least cloud cover is August (Cloud cover 5).
Average visibility in April
Acton, 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).
Acton, California, USA
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