April weather forecastAltaville, CA
April
Weather in April
April is a comfortable spring month in Altaville, California, with an average temperature varying between 44.1°F (6.7°C) and 65.8°F (18.8°C).Temperature
A minor escalation in the average high-temperature is seen with the onset of April, moving from a mild 59.9°F (15.5°C) in March to a still refreshing 65.8°F (18.8°C). Despite high daytime temperatures, the average temperature in Altaville lowers to a frosty 44.1°F (6.7°C) during April nights.Humidity
In Altaville, the average relative humidity in April is 65%.Rainfall
In Altaville, during April, the rain falls for 9.8 days and regularly aggregates up to 1.97" (50mm) of precipitation. In Altaville, during the entire year, the rain falls for 74.4 days and collects up to 22.87" (581mm) of precipitation.Snowfall
In Altaville, snow does not fall in April through October.Daylight
The average length of the day in April is 13h and 13min.On the first day of April, sunrise is at 6:45 am and sunset at 7:25 pm. On the last day of the month, sunrise is at 6:05 am and sunset at 7:52 pm PDT.
Sunshine
The average sunshine in April is 10.1h.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 unsafe exposure to UV radiation for ordinary individuals.Note: The daily high UV index of 5 during April translates into the following recommendations:
Be careful. Light complexion individuals might get burns in fewer than 30 minutes. The Sun's radiation is especially intense around midday; try to stay in shade during this period. During bright days, sunglasses that offer UVA and UVB defense are recommended.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Altaville, CA
- Average high temperature in April: 65.8°F
The warmest month (with the highest average high temperature) is July (91.9°F).
The month with the lowest average high temperature is December (53.2°F).
- Average low temperature in April: 44.1°F
The month with the highest average low temperature is July (62.6°F).
The coldest month (with the lowest average low temperature) is December (37.8°F).
Average pressure in April
Altaville, CA
- Average pressure in April: 30.01"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in April
Altaville, CA
- Average wind speed in April: 5.5mph
The windiest month (with the highest average wind speed) is February (5.7mph).
The calmest month (with the lowest average wind speed) is November (4.7mph).
Average humidity in April
Altaville, CA
- Average humidity in April: 65%
The month with the highest relative humidity is March (71%).
The months with the lowest relative humidity are July and August (34%).
Average rainfall in April
Altaville, CA
- Average rainfall in April: 1.97"
The wettest month (with the highest rainfall) is March (4.76").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in April
Altaville, CA
- Average rainfall days in April: 9.8 days
The month with the highest number of rainy days is March (13 days).
The month with the least rainy days is August (1.2 days).
Average snowfall in April
Altaville, CA
- Average snowfall in April: 0"
The month with the highest snowfall is February (2.32").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in April
Altaville, CA
- Average snowfall days in April: 0 days
The month with the highest number of snowfall days is February (1.2 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in April /
Average sunshine in April
Altaville, CA
- Average daylight in April: 13h and 12min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in April: 10h and 6min
The month with the most sunshine is July (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).
Average sunshine days in April
Altaville, CA
- Average sunshine days in April: 19.8 days
The month with the most sunshine days is July (29.1 days).
The month with the least sunshine days is March (16.8 days).
Average UV index in April
Altaville, CA
- Average UV index in April: 5
The months with the highest UV index are June and July (UV index 7).
The month with the lowest UV index is November (UV index 2).
Average cloud cover in April
Altaville, CA
- Average cloud cover in April: 27
The month with the most cloud cover is March (Cloud cover 37).
The month with the least cloud cover is July (Cloud cover 4).
Average visibility in April
Altaville, 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).
