January weather forecast
Saint Mary's, AK

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Weather in January

January, the same as December, is an extremely cold winter month in Saint Mary's, Alaska, with an average temperature varying between 11.3°F (-11.5°C) and 2.3°F (-16.5°C).

Temperature

In Saint Mary's, Alaska, January is the coldest month, with temperatures averaging a high of 11.3°F (-11.5°C) and a low of 2.3°F (-16.5°C).

Humidity

January through March and December, with an average relative humidity of 91%, are the most humid months.

Rainfall

January and June are months with the least rain when the rain falls for 2.4 days and typically aggregates up to 0.87" (22mm) of rain.

Snowfall

Months with snowfall are January through May, September through December. In Saint Mary's, Alaska, in January, snow falls for 10.1 days, with typically accumulated 2.72" (69mm) of snow. In Saint Mary's, during the entire year, snow falls for 71.4 days and aggregates up to 22.72" (577mm) of snow.

Daylight

In January, the average length of the day is 6h and 20min.
On the first day of January in Saint Mary's, sunrise is at 11:15 am and sunset at 4:36 pm. On the last day of the month, sunrise is at 10:20 am and sunset at 5:51 pm AKST.

Sunshine

In January, the average sunshine is 2.9h.

UV index

The average daily maximum UV index in January is 2. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation for average individuals.
Note: The maximum daily UV index of 2 in January interprets into the following recommendations:
Those with sensitive skin, infants, and children require constant safeguarding from prolonged sun exposure. Around midday, solar radiation is most harmful; hence, exposure should be limited. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Take precaution! The reflection from snow can almost double the UV radiation of the Sun.
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Frequently asked questions

What are the coldest months in Saint Mary's?

January, with its high-temperature average of 11.3°F (-11.5°C) and a low-temperature average of 2.3°F (-16.5°C), is the coldest month in Saint Mary's, Alaska.

How cold is it in Saint Mary's in January?

The high-temperature, in January, in Saint Mary's, is 11.3°F (-11.5°C), while the low-temperature averages to 2.3°F (-16.5°C).

What are the most humid months in Saint Mary's?

January through March and December, with an average relative humidity of 91%, are most humid months in Saint Mary's.

What is the average humidity in January in Saint Mary's?

In Saint Mary's, the average relative humidity in January is 91%.

What is the driest month in Saint Mary's?

The months with the least rainfall in Saint Mary's, Alaska, are January and June Rain falls for 2.4 days and accumulates 0.87" (22mm) of rain.

How much does it rain in Saint Mary's in January?

In January, in Saint Mary's, Alaska, the rain falls for 2.4 days. Throughout January, 0.87" (22mm) of precipitation is accumulated.

How much does it snow in Saint Mary's in January?

In January, in Saint Mary's, it is snowing for 10.1 days. Throughout January, 2.72" (69mm) of snow is accumulated.

How many hours of daylight does Saint Mary's have in January?

The average day length in January in Saint Mary's is 6h and 20min.

What time are sunrise and sunset in January in Saint Mary's?

In January, on the first day of the month, sunrise is at 11:15 am and sunset at 4:36 pm. On the last day of the month, sunrise is at 10:20 am and sunset at 5:51 pm AKST.

How long on average sun shines in January in Saint Mary's?

In Saint Mary's, Alaska, the average sunshine duration in January is 2.9h.

How high is the UV index in January in Saint Mary's?

The average daily maximum UV index in January in Saint Mary's, Alaska, is 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Saint Mary's, AK

Average temperature in January - Saint Mary
  • Average high temperature in January: 11.3°F

The warmest month (with the highest average high temperature) is July (61.5°F).
The month with the lowest average high temperature is January (11.3°F).

  • Average low temperature in January: 2.3°F

The month with the highest average low temperature is July (47.5°F).
The coldest month (with the lowest average low temperature) is January (2.3°F).

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Average pressure in January
Saint Mary's, AK

Average pressure in January - Saint Mary
  • Average pressure in January: 29.75"Hg

The month with the highest atmospheric pressure is July (29.91"Hg).
The months with the lowest atmospheric pressure are October and December (29.67"Hg).

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Average wind speed in January
Saint Mary's, AK

Average wind speed in January - Saint Mary
  • Average wind speed in January: 11.5mph

The windiest month (with the highest average wind speed) is February (11.9mph).
The calmest month (with the lowest average wind speed) is July (8.9mph).

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Average humidity in January
Saint Mary's, AK

Average humidity in January - Saint Mary
  • Average humidity in January: 91%

The months with the highest relative humidity are January, February, March and December (91%).
The month with the lowest relative humidity is June (66%).

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Average rainfall in January
Saint Mary's, AK

Average rainfall in January - Saint Mary
  • Average rainfall in January: 0.87"

The wettest month (with the highest rainfall) is August (2.13").
The driest months (with the least rainfall) are January and June (0.87").

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Average rainfall days in January
Saint Mary's, AK

Average rainfall days in January - Saint Mary
  • Average rainfall days in January: 2.4 days

The month with the highest number of rainy days is August (17.8 days).
The months with the least rainy days are January and February (2.4 days).

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Average snowfall in January
Saint Mary's, AK

Average snowfall in January - Saint Mary
  • Average snowfall in January: 2.72"

The month with the highest snowfall is February (5.28").
The months with the least snowfall are June, July and August (0").

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Average snowfall days in January
Saint Mary's, AK

Average snowfall days in January - Saint Mary
  • Average snowfall days in January: 10.1 days

The month with the highest number of snowfall days is February (11.4 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
Saint Mary's, AK

Average daylight in January / Average sunshine in January - Saint Mary
  • Average daylight in January: 6h and 2min

The month with the longest days is June (Average daylight: 19h and 36min).
The month with the shortest days is December (Average daylight: 5h and 18min).

  • Average sunshine in January: 2h and 5min

The month with the most sunshine is May (Average sunshine: 7h and 54min).
The month with the least sunshine is December (Average sunshine: 2h and 36min).

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Average sunshine days in January
Saint Mary's, AK

Average sunshine days in January - Saint Mary
  • Average sunshine days in January: 18.6 days

The month with the most sunshine days is March (19.5 days).
The month with the least sunshine days is August (10.9 days).

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Average UV index in January
Saint Mary's, AK

Average UV index in January - Saint Mary
  • Average UV index in January: 2

The months with the highest UV index are May, June, July and August (UV index 3).
The months with the lowest UV index are March, November and December (UV index 1).

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Average cloud cover in January
Saint Mary's, AK

Average cloud cover in January - Saint Mary
  • Average cloud cover in January: 57

The month with the most cloud cover is July (Cloud cover 68).
The month with the least cloud cover is June (Cloud cover 54).

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Average visibility in January
Saint Mary's, AK

Average visibility in January - Saint Mary
  • Average visibility in January: 5mi

The months with the highest visibility are May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February, March, April, November and December (5mi).

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Saint Mary's, Alaska, USA

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