January weather forecast
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, the same as December, is a wintry winter month in Mammoth Lakes, California, with an average temperature varying between 35.6°F (2°C) and 16.5°F (-8.6°C).

Temperature

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

Humidity

The average relative humidity in January is 72%.

Rainfall

In January, the rain falls for 4.3 days. Throughout January, 0.67" (17mm) of precipitation is accumulated. Throughout the year, in Mammoth Lakes, 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. In Mammoth Lakes, California, snow falls for 9.1 days, with typically accumulated 4.21" (107mm) of snow. In Mammoth Lakes, during the entire year, snow falls for 60.8 days and aggregates up to 28.58" (726mm) of snow.

Daylight

In Mammoth Lakes, the average length of the day in January is 9h and 55min.
On the first day of the month, sunrise is at 7:10 am and sunset at 4:48 pm. On the last day of January, sunrise is at 7:00 am and sunset at 5:18 pm PST.

Sunshine

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

UV index

January through April, October through December, with an average maximum UV index of 2, are months with the lowest UV index in Mammoth Lakes. A UV Index estimate of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for the average person.
Note: The average daily UV index of 2 in January transform into the following instructions:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to 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. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. 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?

In January, the average high-temperature is 35.6°F (2°C), and the average low-temperature is 16.5°F (-8.6°C).

What is the average humidity in January in Mammoth Lakes?

In January, the average relative humidity in Mammoth Lakes, California, is 72%.

How much does it rain in Mammoth Lakes in January?

In Mammoth Lakes, California, in January, it is raining for 4.3 days, with typically 0.67" (17mm) of accumulated precipitation.

How much does it snow in Mammoth Lakes in January?

In Mammoth Lakes, in January, during 9.1 snowfall days, 4.21" (107mm) of snow is typically accumulated.

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

The average day length in January in Mammoth Lakes is 9h and 55min.

What time are sunrise and sunset in January in Mammoth Lakes?

In January, on the first day of the month, sunrise is at 7:10 am and sunset at 4:48 pm. On the last day of the month, in Mammoth Lakes, sunrise is at 7:00 am and sunset at 5:18 pm PST.

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

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

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

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

What are the months with the lowest UV index in Mammoth Lakes?

The months with the lowest UV index are January through April, October through December, with an average maximum UV index of 2.

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

In Mammoth Lakes, California, the average daily maximum UV index in January is 2. A UV Index value of 2, and less, symbolizes a low health risk from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

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"Hg

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

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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").
The 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).
The 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: 9h and 55min

The month with the longest days is June (Average daylight: 14h and 44min).
The month with the shortest days is December (Average daylight: 9h and 37min).

  • Average sunshine in January: 6h and 18min

The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 6h and 18min).

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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

The months with the highest UV index are June and July (UV index 5).
The 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

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).

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