Contents
- Weather in January
- Frequently asked questions
- Average temperature in January
- Average pressure in January
- Average wind speed in January
- Average humidity in January
- Average rainfall in January
- Average rainfall days in January
- Average snowfall in January
- Average snowfall days in January
- Average daylight in January
- Average sunshine in January
- Average sunshine days in January
- Average UV index in January
- Average cloud cover in January
- Average visibility in January
Weather in January
Temperature
With average high temperatures of 11.3°F (-11.5°C) and lows of 2.3°F (-16.5°C), January is the coldest month.Humidity
January through March and December, with an average relative humidity of 91%, are the most humid months.Rainfall
The months with the least rainfall 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, 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, 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
The average sunshine in January is 2.9h.UV index
In January, the average daily maximum UV index is 2. A UV Index estimate of 2, and below, represents a low threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: The maximum daily UV index of 2 during January translates into the following directions:
In contrast to children, who must always be shielded from the sun, most people can tolerate up to an hour of sun exposure without any burns. It's recommended to limit sun exposure when its radiation is at its peak during midday. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses. Foresee this! The reflection from snow can nearly double the intensity of UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What part of the year is the coldest?
How cold is January?
What is the most humid month?
What is the average humidity in January?
What is the driest month?
How many days does it rain in January?
How much does it snow in January?
How many hours of daylight does Saint Mary's have in January?
When is the sunrise / sunset in January in Saint Mary's?
How long on average sun shines in January?
What is the UV index reading in January?
Average temperature in January
Saint Mary's, AK
- 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).
Average pressure in January
Saint Mary's, AK
- 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).
Average wind speed in January
Saint Mary's, AK
- 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).
Average humidity in January
Saint Mary's, AK
- 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%).
Average rainfall in January
Saint Mary's, AK
- 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").
Average rainfall days in January
Saint Mary's, AK
- 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).
Average snowfall in January
Saint Mary's, AK
- 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").
Average snowfall days in January
Saint Mary's, AK
- 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).
Average daylight in January /
Average sunshine in January
Saint Mary's, AK
- 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).
Average sunshine days in January
Saint Mary's, AK
- 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).
Average UV index in January
Saint Mary's, AK
- 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).
Average cloud cover in January
Saint Mary's, AK
- 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).
Average visibility in January
Saint Mary's, AK
- 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).
Saint Mary's, Alaska, USA
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