April weather forecastLos Alamos, CA
April
Weather in April
April, like March, in Los Alamos, California, is another comfortable spring month, with an average temperature ranging between min 50.4°F (10.2°C) and max 66.9°F (19.4°C).Temperature
Los Alamos signifies an average high-temperature of a still enjoyable 66.9°F (19.4°C) in April, closely mirroring the 64°F (17.8°C) of March. During April, the average low-temperature is recorded at a cool 50.4°F (10.2°C).Humidity
The average relative humidity in April is 64%.Rainfall
In April, the rain falls for 3.6 days. Throughout April, 0.35" (9mm) of precipitation is accumulated. Throughout the year, in Los Alamos, there are 37.7 rainfall days, and 5.98" (152mm) of precipitation is accumulated.Daylight
The average length of the day in April is 13h and 5min.On the first day of the month, sunrise is at 6:46 am and sunset at 7:22 pm. On the last day of April, sunrise is at 6:10 am and sunset at 7:45 pm PDT.
Sunshine
In Los Alamos, the average sunshine in April is 11.1h.UV index
In Los Alamos, the average daily maximum UV index in April is 5. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: An average UV index of 5 in April transforms into this advice:
Ensure safety - Sun damage prevention is strongly urged. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Los Alamos, CA
- Average high temperature in April: 66.9°F
The warmest month (with the highest average high temperature) is August (78.8°F).
The month with the lowest average high temperature is December (61.2°F).
- Average low temperature in April: 50.4°F
The month with the highest average low temperature is September (61.2°F).
The coldest month (with the lowest average low temperature) is February (47.8°F).
Average pressure in April
Los Alamos, CA
- Average pressure in April: 30.01"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.91"Hg).
Average wind speed in April
Los Alamos, CA
- Average wind speed in April: 8.8mph
The windiest month (with the highest average wind speed) is May (8.9mph).
The calmest month (with the lowest average wind speed) is July (6.7mph).
Average humidity in April
Los Alamos, CA
- Average humidity in April: 64%
The month with the highest relative humidity is March (67%).
The months with the lowest relative humidity are October and November (58%).
Average rainfall in April
Los Alamos, CA
- Average rainfall in April: 0.35"
The wettest month (with the highest rainfall) is January (1.38").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days in April
Los Alamos, CA
- Average rainfall days in April: 3.6 days
The month with the highest number of rainy days is March (6.2 days).
The month with the least rainy days is August (0.8 days).
Average daylight in April /
Average sunshine in April
Los Alamos, CA
- Average daylight in April: 13h and 6min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in April: 11h and 6min
The months with the most sunshine are June and July (Average sunshine: 12h and 0min).
The month with the least sunshine is February (Average sunshine: 6h and 36min).
Average sunshine days in April
Los Alamos, CA
- Average sunshine days in April: 26 days
The month with the most sunshine days is August (29 days).
The month with the least sunshine days is February (22.3 days).
Average UV index in April
Los Alamos, CA
- Average UV index in April: 5
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in April
Los Alamos, CA
- Average cloud cover in April: 17
The month with the most cloud cover is March (Cloud cover 24).
The month with the least cloud cover is August (Cloud cover 5).
Average visibility in April
Los Alamos, 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).





