January weather forecast
Saint Mary's, AK

Weather in January

January, like December, in Saint Mary's, Alaska, is another frigid cold winter month, with average temperature ranging between min 2.3°F (-16.5°C) and max 11.3°F (-11.5°C).

Temperature

January is the coldest month, with an average high-temperature of 11.3°F (-11.5°C) and an average low-temperature of 2.3°F (-16.5°C).

Humidity

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

Rainfall

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

Snowfall

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

Daylight

In January, the average length of the day in Saint Mary's is 6.4h.

Sunshine

The average sunshine in January is 2.9h.

UV index

In Saint Mary's, the average daily maximum UV index is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from the exposure to the Sun's UV radiation for ordinary individuals.
Note: The average daily UV index of 2 in January transform into the following instructions:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the coldest month in Saint Mary's?

January is the coldest month, with an average high-temperature of 11.3°F (-11.5°C) and an average low-temperature of 2.3°F (-16.5°C).

What is the most humid month 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, Alaska, the average relative humidity in January is 91%.

What is the driest month in Saint Mary's?

Months with the least rainfall in Saint Mary's 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 Saint Mary's, during January, the rain falls for 2.4 days and regularly aggregates up to 0.87" (22mm) of precipitation.

How many days does it snow in January in Saint Mary's?

In Saint Mary's, Alaska, during January, snow falls for 10.1 days and regularly aggregates up to 2.72" (69mm) of snow.

What is the average length of the day in January in Saint Mary's?

The average length of the day in January in Saint Mary's, Alaska, is 6.4h.

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

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

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

In Saint Mary's, the average daily maximum UV index in January is 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to the Sun's UV rays.

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"

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

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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%

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).
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").
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).
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: 6.4h

The month with the longest days is June (Average daylight: 19.6h).
The month with the shortest days is December (Average daylight: 5.3h).

  • Average sunshine in January: 2.9h

The month with the most sunshine is May (Average sunshine: 7.9h).
The month with the least sunshine is December (Average sunshine: 2.6h).

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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

Months with the highest UV index are May, June, July and August (UV index 3).
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

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

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