April weather forecastIsland Mountain, CA
April
Weather in April
April is a mild spring month in Island Mountain, California, with temperature in the range of an average low of 45.7°F (7.6°C) and an average high of 57.2°F (14°C).Temperature
Transitioning into April, Island Mountain experiences an average high-temperature of a mild 57.2°F (14°C), marking a minor shift from the preceding month. Island Mountain witnesses a consistent average low-temperature of 45.7°F (7.6°C) throughout April.Humidity
In April, the average relative humidity is 78%.Rainfall
In Island Mountain, in April, it is raining for 10.9 days, with typically 2.05" (52mm) of accumulated precipitation. In Island Mountain, during the entire year, the rain falls for 102.7 days and collects up to 28.78" (731mm) of precipitation.Snowfall
January, March through December are months without snowfall.Daylight
In April, the average length of the day is 13h and 18min.On the first day of April, sunrise is at 6:56 am and sunset at 7:38 pm. On the last day of the month, sunrise is at 6:14 am and sunset at 8:08 pm PDT.
Sunshine
In April, the average sunshine is 9.2h.UV index
The average daily maximum UV index in April is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: In April, a daily UV index of 4 turns into the following recommendations:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Island Mountain, CA
- Average high temperature in April: 57.2°F
The warmest month (with the highest average high temperature) is September (69.8°F).
The month with the lowest average high temperature is December (53.4°F).
- Average low temperature in April: 45.7°F
The months with the highest average low temperature are July, August and September (54.3°F).
The coldest month (with the lowest average low temperature) is February (43.5°F).
Average pressure in April
Island Mountain, CA
- Average pressure in April: 30.06"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The months with the lowest atmospheric pressure are August and September (29.95"Hg).
Average wind speed in April
Island Mountain, CA
- Average wind speed in April: 9.4mph
The windiest month (with the highest average wind speed) is June (10.6mph).
The calmest months (with the lowest average wind speed) are January and August (7.8mph).
Average humidity in April
Island Mountain, CA
- Average humidity in April: 78%
The month with the highest relative humidity is March (81%).
The month with the lowest relative humidity is September (72%).
Average rainfall in April
Island Mountain, CA
- Average rainfall in April: 2.05"
The wettest month (with the highest rainfall) is December (5.31").
The driest month (with the least rainfall) is July (0.08").
Average rainfall days in April
Island Mountain, CA
- Average rainfall days in April: 10.9 days
The month with the highest number of rainy days is March (16.4 days).
The month with the least rainy days is August (1.8 days).
Average snowfall days in April
Island Mountain, CA
- Average snowfall days in April: 0 days
The month with the highest number of snowfall days is February (0.1 days).
The months with the least snowfall days are January, March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight in April /
Average sunshine in April
Island Mountain, CA
- Average daylight in April: 13h and 18min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in April: 9h and 12min
The months with the most sunshine are July and August (Average sunshine: 11h and 42min).
The month with the least sunshine is December (Average sunshine: 5h and 0min).
Average sunshine days in April
Island Mountain, CA
- Average sunshine days in April: 17.7 days
The month with the most sunshine days is July (28.4 days).
The month with the least sunshine days is March (13.1 days).
Average UV index in April
Island Mountain, CA
- Average UV index in April: 4
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 3).
Average cloud cover in April
Island Mountain, CA
- Average cloud cover in April: 36
The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 10).
Average visibility in April
Island Mountain, 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).
