April weather forecastClearlake, CA
April
Weather in April
April is an enjoyable spring month in Clearlake, California, with an average temperature ranging between min 43.2°F (6.2°C) and max 66°F (18.9°C).Temperature
The shift into April is marked by a modest rise in the average high-temperature, moving from March's moderate 58.6°F (14.8°C) to a comfortable 66°F (18.9°C). Clearlake's April nights represent a significant downturn from the day's heat, with an average temperature of 43.2°F (6.2°C).Humidity
In Clearlake, the average relative humidity in April is 66%.Rainfall
In April, the rain falls for 8.9 days. Throughout April, 0.91" (23mm) of precipitation is accumulated. Throughout the year, there are 79.8 rainfall days, and 17.44" (443mm) of precipitation is accumulated.Snowfall
In Clearlake, California, snow does not fall in April through October.Daylight
The average length of the day in April is 13h and 15min.On the first day of April, sunrise is at 6:53 am and sunset at 7:34 pm. On the last day of the month, sunrise is at 6:12 am and sunset at 8:02 pm PDT.
Sunshine
In April, the average sunshine is 9.7h.UV index
The average daily maximum UV index in April is 4. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for the average person.Note: A maximum high daily UV index of 4 during April translates into the following directions:
Preventative actions are necessary - Suggestions to safeguard against sun damage are in order. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. Employ a wide-brim hat for potent defense against up to 50% of UV rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Clearlake, CA
- Average high temperature in April: 66°F
The warmest month (with the highest average high temperature) is July (91.2°F).
The month with the lowest average high temperature is December (52.7°F).
- Average low temperature in April: 43.2°F
The month with the highest average low temperature is July (58.8°F).
The coldest month (with the lowest average low temperature) is December (38.1°F).
Average pressure in April
Clearlake, CA
- Average pressure in April: 30.03"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The months with the lowest atmospheric pressure are June and August (29.91"Hg).
Average wind speed in April
Clearlake, CA
- Average wind speed in April: 5.7mph
The windiest month (with the highest average wind speed) is April (5.7mph).
The calmest month (with the lowest average wind speed) is November (4.3mph).
Average humidity in April
Clearlake, CA
- Average humidity in April: 66%
The month with the highest relative humidity is March (74%).
The month with the lowest relative humidity is July (44%).
Average rainfall in April
Clearlake, CA
- Average rainfall in April: 0.91"
The wettest month (with the highest rainfall) is February (3.7").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in April
Clearlake, CA
- Average rainfall days in April: 8.9 days
The month with the highest number of rainy days is March (13.9 days).
The months with the least rainy days are July and August (1.1 days).
Average snowfall in April
Clearlake, CA
- Average snowfall in April: 0"
The month with the highest snowfall is February (0.51").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in April
Clearlake, CA
- Average snowfall days in April: 0 days
The month with the highest number of snowfall days is February (0.9 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
Clearlake, CA
- Average daylight in April: 13h and 18min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in April: 9h and 42min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 18min).
Average sunshine days in April
Clearlake, CA
- Average sunshine days in April: 20.1 days
The month with the most sunshine days is July (29.4 days).
The month with the least sunshine days is March (15.8 days).
Average UV index in April
Clearlake, CA
- Average UV index in April: 4
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are November and December (UV index 2).
Average cloud cover in April
Clearlake, CA
- Average cloud cover in April: 32
The month with the most cloud cover is March (Cloud cover 43).
The month with the least cloud cover is July (Cloud cover 4).
Average visibility in April
Clearlake, 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).
