January weather forecast
Saint John Harbor, AK

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Weather in January

January, the same as December, is an icy winter month in Saint John Harbor, Alaska, with an average temperature fluctuating between 32.7°F (0.4°C) and 27.3°F (-2.6°C).

Temperature

The arrival of January records an average high-temperature of a still icy 32.7°F (0.4°C), closely related to the 32.4°F (0.2°C) observed in December. January is characterized by a steady nighttime low-temperature of 27.3°F (-2.6°C).

Humidity

The months with the highest humidity in Saint John Harbor are January and August, with an average relative humidity of 86%.

Rainfall

In Saint John Harbor, in January, during 15.8 rainfall days, 6.02" (153mm) of precipitation is typically accumulated. Throughout the year, there are 197.9 rainfall days, and 53.03" (1347mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December. In January, in Saint John Harbor, it is snowing for 8.6 days. Throughout January, 11.73" (298mm) of snow is accumulated. Throughout the year, there are 47.5 snowfall days, and 58.23" (1479mm) of snow is accumulated.

Daylight

The average length of the day in January is 7h and 40min.
On the first day of the month, sunrise is at 8:25 am and sunset at 3:24 pm. On the last day of January, sunrise is at 7:50 am and sunset at 4:20 pm AKST.

Sunshine

January and November, with an average of 3.4h of sunshine, are months with the least sunshine.

UV index

In Saint John Harbor, the average daily maximum UV index in January is 2. A UV Index reading of 2, and below, represents a low threat to health from unsafe exposure to UV radiation for ordinary individuals.
Note: The daily maximum UV index of 2 in January interprets into the following advice:
Most individuals face no significant issues with extended sun exposure, but it is always essential to protect children, babies, and those with sensitive skin. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Always opt for UVA and UVB-resistant sunglasses on radiant days. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
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Frequently asked questions

How cold is January in Saint John Harbor?

Saint John Harbor in January has an average high-temperature of 32.7°F (0.4°C) and an average low-temperature of 27.3°F (-2.6°C).

What is the most humid month in Saint John Harbor?

January and August, with an average relative humidity of 86%, are most humid months.

What is the average humidity in January in Saint John Harbor?

The average relative humidity in January in Saint John Harbor, Alaska, is 86%.

How many days does it rain in January in Saint John Harbor?

In Saint John Harbor, in January, during 15.8 rainfall days, 6.02" (153mm) of precipitation is typically accumulated.

How much does it snow in Saint John Harbor in January?

In January, in Saint John Harbor, it is snowing for 8.6 days. Throughout January, 11.73" (298mm) of snow is accumulated.

What is the average length of the day in January in Saint John Harbor?

In January, the average day length in Saint John Harbor, Alaska, is 7h and 40min.

When is the sunrise / sunset in January in Saint John Harbor?

In January, on the first day of the month, sunrise is at 8:25 am and sunset at 3:24 pm. On the last day of the month, sunrise is at 7:50 am and sunset at 4:20 pm AKST.

What is the month with the least sunshine in Saint John Harbor?

The months with the least sunshine are January and November, with an average of 3.4h of sunshine.

How many hours of sunshine does Saint John Harbor have in January?

The average sunshine duration in January is 3.4h.

How high is the UV index in January in Saint John Harbor?

In Saint John Harbor, Alaska, 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 Sun's UV rays.
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 John Harbor, AK

Average temperature in January - Saint John Harbor, AK
  • Average high temperature in January: 32.7°F

The warmest month (with the highest average high temperature) is July (59.7°F).
The month with the lowest average high temperature is December (32.4°F).

  • Average low temperature in January: 27.3°F

The month with the highest average low temperature is July (50.2°F).
The coldest month (with the lowest average low temperature) is February (25.9°F).

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Average pressure in January
Saint John Harbor, AK

Average pressure in January - Saint John Harbor, AK
  • Average pressure in January: 29.85"Hg

The month with the highest atmospheric pressure is July (30.05"Hg).
The month with the lowest atmospheric pressure is November (29.8"Hg).

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Average wind speed in January
Saint John Harbor, AK

Average wind speed in January - Saint John Harbor, AK
  • Average wind speed in January: 8.2mph

The windiest month (with the highest average wind speed) is January (8.2mph).
The calmest month (with the lowest average wind speed) is July (3.9mph).

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Average humidity in January
Saint John Harbor, AK

Average humidity in January - Saint John Harbor, AK
  • Average humidity in January: 86%

The months with the highest relative humidity are January and August (86%).
The month with the lowest relative humidity is May (81%).

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Average rainfall in January
Saint John Harbor, AK

Average rainfall in January - Saint John Harbor, AK
  • Average rainfall in January: 6.02"

The wettest month (with the highest rainfall) is October (6.3").
The driest month (with the least rainfall) is May (2.01").

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Average rainfall days in January
Saint John Harbor, AK

Average rainfall days in January - Saint John Harbor, AK
  • Average rainfall days in January: 15.8 days

The month with the highest number of rainy days is October (20.1 days).
The month with the least rainy days is February (9.5 days).

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Average snowfall in January
Saint John Harbor, AK

Average snowfall in January - Saint John Harbor, AK
  • Average snowfall in January: 11.73"

The month with the highest snowfall is March (13.46").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in January
Saint John Harbor, AK

Average snowfall days in January - Saint John Harbor, AK
  • Average snowfall days in January: 8.6 days

The month with the highest number of snowfall days is March (10.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in January /
Average sunshine in January
Saint John Harbor, AK

Average daylight in January / Average sunshine in January - Saint John Harbor, AK
  • Average daylight in January: 7h and 4min

The month with the longest days is June (Average daylight: 17h and 36min).
The month with the shortest days is December (Average daylight: 7h and 0min).

  • Average sunshine in January: 3h and 2min

The month with the most sunshine is May (Average sunshine: 7h and 24min).
The months with the least sunshine are January and November (Average sunshine: 3h and 24min).

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Average sunshine days in January
Saint John Harbor, AK

Average sunshine days in January - Saint John Harbor, AK
  • Average sunshine days in January: 10.5 days

The month with the most sunshine days is December (12.5 days).
The month with the least sunshine days is November (8 days).

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Average UV index in January
Saint John Harbor, AK

Average UV index in January - Saint John Harbor, AK
  • Average UV index in January: 2

The months with the highest UV index are July and August (UV index 4).
The months with the lowest UV index are November and December (UV index 1).

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Average cloud cover in January
Saint John Harbor, AK

Average cloud cover in January - Saint John Harbor, AK
  • Average cloud cover in January: 66

The month with the most cloud cover is January (Cloud cover 66).
The months with the least cloud cover are February and May (Cloud cover 54).

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Average visibility in January
Saint John Harbor, AK

Average visibility in January - Saint John Harbor, AK
  • Average visibility in January: 5mi

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

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Saint John Harbor, Alaska, USA

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