Mammoth Lakes
California, USA
Long-term weather forecast
Long-term weather forecast

April weather forecast and climate
Mammoth Lakes, CA

The ever-scenic and perfect water reflections in the clear water of trees, rocks, and distant mountains in Mammoth Lakes, California
The ever-scenic and perfect water reflections in the clear water of trees, rocks, and distant mountains in Mammoth Lakes, California
April is a fresh spring month in Mammoth Lakes, California, with average temperature varying between 25.5°F (-3.6°C) and 50.4°F (10.2°C).

Temperature

In Mammoth Lakes, the average high-temperature in April marginally rises, from a frosty 44.4°F (6.9°C) in March, to a cool 50.4°F (10.2°C). The average low-temperature, in April, is 25.5°F (-3.6°C).

Rainfall

In Mammoth Lakes, California, it is raining for 7 days, with typically 1.5" (39.1mm) of accumulated precipitation. In Mammoth Lakes, California, during the entire year, the rain falls for 63 days and collects up to 23" (583.3mm) of precipitation.

Snowfall

January through June, October through December are months with snowfall.

Daylight

The average length of the day in Mammoth Lakes is 13.2h.

Sunshine

In April, the average sunshine is 10h.

UV index

In April, the average daily maximum UV index is 8. A UV Index estimate of 8 to 10 represents a very high health vulnerability from unsafe exposure to the UV radiation for the ordinary person.
In April, the average maximum UV index of 8 translate into the following recommendations:
Take extra precautions. Fair-skinned individuals may get burned in less than 10 minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.

What is the temperature in April in Mammoth Lakes?

In April, in Mammoth Lakes, the average high-temperature is 50.4°F (10.2°C), and the average low-temperature is 25.5°F (-3.6°C).

How much does it rain in Mammoth Lakes in April?

In Mammoth Lakes, California, in April, during 7 rainfall days, 1.5" (39.1mm) of precipitation is typically accumulated.

How much does it snow in Mammoth Lakes in April?

In Mammoth Lakes, California, in April, 17" (431.8mm) of snow is typically accumulated.

What is the average length of the day in April in Mammoth Lakes?

In April, the average length of the day in Mammoth Lakes, California, is 13.2h.

How long on average sun shines in April in Mammoth Lakes?

The average sunshine in April in Mammoth Lakes, California, is 10h.

What is the UV index reading in April in Mammoth Lakes?

The average daily maximum UV index in April is 8. A UV Index reading of 8 to 10 represents a very high health threat from the exposure to the Sun's UV rays.
Average temperature in April - Mammoth Lakes, CA
  • Average high temperature in April: 50.4°F

The warmest month (with the highest average high temperature) is July (77.7°F).
The month with the lowest average high temperature is January (40.1°F).

  • Average low temperature in April: 25.6°F

The month with the highest average low temperature is July (45.3°F).
The coldest month (with the lowest average low temperature) is January (14.8°F).

Average rainfall in April - Mammoth Lakes, CA
  • Average rainfall in April: 1.5"

The wettest month (with the highest rainfall) is January (4.6").
The driest month (with the lowest rainfall) is August (0.3").

Average rainfall days in April - Mammoth Lakes, CA
  • Average rainfall days in April: 7 days

Months with the highest number of rainy days are January and February (9 days).
Months with the lowest number of rainy days are August and September (2 days).

Average snowfall in April - Mammoth Lakes, CA
  • Average snowfall in April: 17"

The month with the highest snowfall is December (45.3").
Months with the lowest snowfall are July, August and September (0").

Average daylight in April / Average sunshine in April - Mammoth Lakes, CA
  • Average daylight in April: 13.2h

The month with the longest days is June (Average daylight: 14.7h).
The month with shortest days is December (Average daylight: 9.6h).

  • Average sunshine in April: 10h

The month with most sunshine is July (Average sunshine: 12h).
The month with least sunshine is December (Average sunshine: 6h).

Average UV index in April - Mammoth Lakes, CA
  • Average UV index in April: 8

Months with the highest UV index are June and July (UV index 11).
The month with the lowest UV index is December (UV index 2).