January weather forecast and climate
Mammoth Lakes, CA

Perfect water reflections of trees, rocks, and distant mountains in the clear water of Mammoth Lakes, California
Perfect water reflections of trees, rocks, and distant mountains in the clear water of Mammoth Lakes, California

Weather in January

January, like December, in Mammoth Lakes, California, is another cold winter month, with average temperature varying between 35.6°F (2°C) and 16.5°F (-8.6°C).

Temperature

In Mammoth Lakes, the average high-temperature is essentially the same as in December - a still cold 35.6°F (2°C). The average low-temperature, in January, is 16.5°F (-8.6°C).

Humidity

The average relative humidity in Mammoth Lakes, California, is 72%.

Rainfall

In Mammoth Lakes, during 4.3 rainfall days, 0.67" (17mm) of precipitation is typically accumulated. Throughout the year, there are 47.7 rainfall days, and 4.92" (125mm) of precipitation is accumulated.

Snowfall

January through June, September through December are months with snowfall. In Mammoth Lakes, during January, snow falls for 9.1 days and regularly aggregates up to 4.21" (107mm) of snow. Throughout the year, there are 60.8 snowfall days, and 28.58" (726mm) of snow is accumulated.

Daylight

In January, the average length of the day in Mammoth Lakes is 9.9h.

Sunshine

With an average of 6.3h of sunshine, January has the least sunshine of the year in Mammoth Lakes, California.

UV index

Months with the lowest UV index in Mammoth Lakes are January through April, October through December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from the exposure to the Sun's UV rays for average individuals.
Note: In January, the average maximum UV index of 2 translate into the following recommendations:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. 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. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the temperature in January in Mammoth Lakes?

The average high-temperature, in January, in Mammoth Lakes, is 35.6°F (2°C), while the average low-temperature is 16.5°F (-8.6°C).

What is the average humidity in January in Mammoth Lakes?

The average relative humidity in January is 72%.

How much does it rain in Mammoth Lakes in January?

In January, the rain falls for 4.3 days. Throughout January, 0.67" (17mm) of precipitation is accumulated.

How many days does it snow in January in Mammoth Lakes?

In January, in Mammoth Lakes, it is snowing for 9.1 days. Throughout January, 4.21" (107mm) of snow is accumulated.

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

The average length of the day in January in Mammoth Lakes, California, is 9.9h.

What is the month with the least sunshine in Mammoth Lakes?

January has the least sunshine of the year, with an average of 6.3h of sunshine.

How many hours of sunshine does Mammoth Lakes have in January?

In Mammoth Lakes, the average sunshine in January is 6.3h.

When is the lowest UV index in Mammoth Lakes?

January through April, October through December, with an average maximum UV index of 2, are months with the lowest UV index in Mammoth Lakes, California.

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

In Mammoth Lakes, the average daily maximum UV index in January is 2. A UV Index value of 2, and less, symbolizes a low health threat from unsafe exposure to the Sun's UV rays.

Average temperature in January
Mammoth Lakes, CA

Average temperature in January - Mammoth Lakes, CA
  • Average high temperature in January: 35.6°F

The warmest month (with the highest average high temperature) is July (73.4°F).
The month with the lowest average high temperature is February (34°F).

  • Average low temperature in January: 16.5°F

The month with the highest average low temperature is July (48.2°F).
The coldest month (with the lowest average low temperature) is February (14.9°F).

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Average pressure in January
Mammoth Lakes, CA

Average pressure in January - Mammoth Lakes, CA
  • Average pressure in January: 30.16"

The month with the highest atmospheric pressure is January (30.16").
The month with the lowest atmospheric pressure is June (29.89").

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Average wind speed in January
Mammoth Lakes, CA

Average wind speed in January - Mammoth Lakes, CA
  • Average wind speed in January: 5.7mph

The windiest month (with the highest average wind speed) is March (6.9mph).
The calmest months (with the lowest average wind speed) are July and August (4.9mph).

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Average humidity in January
Mammoth Lakes, CA

Average humidity in January - Mammoth Lakes, CA
  • Average humidity in January: 72%

The month with the highest relative humidity is February (76%).
The month with the lowest relative humidity is August (34%).

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Average rainfall in January
Mammoth Lakes, CA

Average rainfall in January - Mammoth Lakes, CA
  • Average rainfall in January: 0.67"

The wettest month (with the highest rainfall) is February (0.94").
The driest months (with the least rainfall) are August and October (0.08").

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Average rainfall days in January
Mammoth Lakes, CA

Average rainfall days in January - Mammoth Lakes, CA
  • Average rainfall days in January: 4.3 days

The month with the highest number of rainy days is April (6.3 days).
The month with the least rainy days is August (1.8 days).

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Average snowfall in January
Mammoth Lakes, CA

Average snowfall in January - Mammoth Lakes, CA
  • Average snowfall in January: 4.21"

The month with the highest snowfall is February (5.67").
Months with the least snowfall are July and August (0").

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Average snowfall days in January
Mammoth Lakes, CA

Average snowfall days in January - Mammoth Lakes, CA
  • Average snowfall days in January: 9.1 days

The month with the highest number of snowfall days is March (11.3 days).
Months with the least snowfall days are July and August (0 days).

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Average daylight in January /
Average sunshine in January
Mammoth Lakes, CA

Average daylight in January / Average sunshine in January - Mammoth Lakes, CA
  • Average daylight in January: 9.9h

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

  • Average sunshine in January: 6.3h

Months with the most sunshine are July and August (Average sunshine: 12h).
The month with the least sunshine is January (Average sunshine: 6.3h).

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Average sunshine days in January
Mammoth Lakes, CA

Average sunshine days in January - Mammoth Lakes, CA
  • Average sunshine days in January: 21.7 days

The month with the most sunshine days is October (27.3 days).
The month with the least sunshine days is March (18.2 days).

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Average UV index in January
Mammoth Lakes, CA

Average UV index in January - Mammoth Lakes, CA
  • Average UV index in January: 2

Months with the highest UV index are June and July (UV index 5).
Months with the lowest UV index are January, February, March, April, October, November and December (UV index 2).

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Average cloud cover in January
Mammoth Lakes, CA

Average cloud cover in January - Mammoth Lakes, CA
  • Average cloud cover in January: 29

The month with the most cloud cover is March (Cloud cover 30).
The month with the least cloud cover is August (Cloud cover 7).

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Average visibility in January
Mammoth Lakes, CA

Average visibility in January - Mammoth Lakes, CA
  • Average visibility in January: 6mi

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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