January weather forecast
Yosemite National Park, CA

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Part of Merced River in the valley below the Yosemite National Park Mountains, California
Part of Merced River in the valley below the Yosemite National Park Mountains, California

Weather in January

In Yosemite National Park, the first month of the year sees the lowest average temperatures, rendering the park a snowy winter wonderland. With temperatures lingering between 25.6°F (-3.6°C) and 47.2°F (8.4°C), January tops other months with a maximum snow accumulation of 16.2" (411mm). The weather remains brisk and mostly cloudy throughout the month. The chilly ambience gives way to just 6 hours of average sunshine per day. The 9.9 hours of daylight serve as perfect conditions for tourists seeking a frosty paradise brimming with scenic snow-capped views.

Temperature

Yosemite National Park's coldest month, January, registers temperatures that range from a high of 47.1°F (8.4°C) to a low of 25.5°F (-3.6°C).

Rainfall

The month with the most rainfall in Yosemite National Park is January, when the rain falls for 9 days and typically aggregates up to 6.5" (165mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. January is the month with the most snowfall, with 16.22" (412mm) of accumulated snow.

Daylight

In Yosemite National Park, the average length of the day in January is 9h and 54min.
On the first day of the month, sunrise is at 7:13 am and sunset at 4:49 pm. On the last day of January, in Yosemite National Park, California, sunrise is at 7:03 am and sunset at 5:19 pm PST.

Sunshine

January and December, with an average of 6h of sunshine, are months with the least sunshine.

UV index

January and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for average individuals.
Note: During January, 2 as the daily maximum UV index converts into the following advice:
It is important to always shield children, babies, and individuals with sensitive skin from prolonged exposure to the sun. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. Boost your sun resistance with garments that are densely woven yet spacious. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
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Frequently asked questions

What time of the year is the coldest in Yosemite National Park?

Yosemite National Park's January weather, marked by an average high temperature of 47.1°F (8.4°C) and an average low temperature of 25.5°F (-3.6°C), is the coldest in the year.

What are the temperatures in Yosemite National Park in January?

The average high-temperature and low-temperature in Yosemite National Park during January are 47.1°F (8.4°C) and 25.5°F (-3.6°C) respectively.

What is the wettest month in Yosemite National Park?

The month with the most rainfall is January, when the rain falls for 9 days and typically aggregates up to 6.5" (165mm) of precipitation.

How many days does it rain in January in Yosemite National Park?

In Yosemite National Park, in January, during 9 rainfall days, 6.5" (165mm) of precipitation is typically accumulated.

When does it snow the most in Yosemite National Park?

The month with the most snowfall in Yosemite National Park is January, when 16.22" (412mm) of snow is typically aggregated.

How much does it snow in Yosemite National Park in January?

Throughout January, 16.22" (412mm) of snow is accumulated.

How many hours of daylight does Yosemite National Park have in January?

In January, the average day length is 9h and 54min.

What time are sunrise and sunset in January in Yosemite National Park?

In January, on the first day of the month, sunrise is at 7:13 am and sunset at 4:49 pm. On the last day of the month, in Yosemite National Park, sunrise is at 7:03 am and sunset at 5:19 pm PST.

What are the months with the least sunshine in Yosemite National Park?

The months with the least sunshine in Yosemite National Park are January and December, with an average of 6h of sunshine.

How many hours of sunshine does Yosemite National Park have in January?

In January, the average sunshine duration in Yosemite National Park is 6h.

What is the month with the lowest UV index in Yosemite National Park?

January and December, with an average maximum UV index of 2, are months with the lowest UV index in Yosemite National Park.

What is the UV index intensity in January in Yosemite National Park?

In January, the average daily maximum UV index in Yosemite National Park is 2. A UV Index value of 2, and less, symbolizes a minimal hazard to health from unsafe exposure to Sun's UV rays.
Average rainfall days
Average daylight
Average sunshine
Average UV index

Average temperature in January
Yosemite National Park, CA

Average temperature in January - Yosemite National Park, CA
  • Average high temperature in January: 47.2°F

The warmest month (with the highest average high temperature) is July (89.9°F).
The month with the lowest average high temperature is January (47.2°F).

  • Average low temperature in January: 25.6°F

The month with the highest average low temperature is July (53.2°F).
The coldest month (with the lowest average low temperature) is January (25.6°F).

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Average rainfall in January
Yosemite National Park, CA

Average rainfall in January - Yosemite National Park, CA
  • Average rainfall in January: 6.5"

The wettest month (with the highest rainfall) is January (6.5").
The driest month (with the least rainfall) is August (0.2").

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Average rainfall days in January
Yosemite National Park, CA

Average rainfall days in January - Yosemite National Park, CA
  • Average rainfall days in January: 9 days

The month with the highest number of rainy days is March (10 days).
The months with the least rainy days are July and August (1 days).

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Average snowfall in January
Yosemite National Park, CA

Average snowfall in January - Yosemite National Park, CA
  • Average snowfall in January: 16.2"

The month with the highest snowfall is January (16.2").
The months with the least snowfall are June, July, August and September (0").

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Average daylight in January /
Average sunshine in January
Yosemite National Park, CA

Average daylight in January / Average sunshine in January - Yosemite National Park, CA
  • Average daylight in January: 9h and 5min

The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).

  • Average sunshine in January: 6h

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

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Average UV index in January
Yosemite National Park, CA

Average UV index in January - Yosemite National Park, CA
  • Average UV index in January: 2

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

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Yosemite National Park, California, USA

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