Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average sea temperature in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
December, known for its average high temperature of 32.4°F (0.2°C) and an average low temperature of 27.5°F (-2.5°C), is the coldest month in Petersburg.Humidity
The average relative humidity in December is 83%.Rainfall
In Petersburg, during December, the rain falls for 14.6 days and regularly aggregates up to 4.65" (118mm) of precipitation. In Petersburg, Alaska, during the entire year, the rain falls for 197.9 days and collects up to 53.03" (1347mm) of precipitation.Snowfall
Months with snowfall in Petersburg are January through May, October through December. In Petersburg, during December, snow falls for 8.4 days and regularly aggregates up to 10.67" (271mm) of snow. In Petersburg, during the entire year, snow falls for 47.5 days and aggregates up to 58.23" (1479mm) of snow.Ocean temperature
In Petersburg, Alaska, in December, the average water temperature is 44.2°F (6.8°C).Note: It is advised against swimming in 44.2°F (6.8°C) when it drops below 50°F (10°C). Such temperatures can cause extreme cold shock, leading to hyperventilation.
Daylight
December has the shortest days of the year, with an average of 6h and 54min of daylight.On the first day of December, sunrise is at 8:05 am and sunset at 3:17 pm. On the last day of the month, sunrise is at 8:28 am and sunset at 3:22 pm AKST.
Sunshine
In December, the average sunshine is 3.8h.UV index
November and December, with an average maximum UV index of 1, are months with the lowest UV index in Petersburg. A UV Index estimate of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for the average person.Note: In December, the UV index of 1 transforms into the following advice:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
Frequently asked questions
What month is the coldest in Petersburg?
How cold is it in Petersburg in December?
What is the average humidity in December in Petersburg?
How much does it rain in Petersburg in December?
How much does it snow in Petersburg in December?
How cold is the water in December in Petersburg?
What is the month with the shortest days in Petersburg?
How many hours of daylight does Petersburg have in December?
When are sunrise and sunset in December in Petersburg?
How long on average sun shines in December in Petersburg?
When is the lowest UV index in Petersburg?
How high is the UV index in December in Petersburg?
Average temperature in December
Petersburg, AK
- Average high temperature in December: 32.4°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 December: 27.5°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).
Average pressure in December
Petersburg, AK
- Average pressure in December: 29.88"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).
Average wind speed in December
Petersburg, AK
- Average wind speed in December: 7.7mph
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).
Average humidity in December
Petersburg, AK
- Average humidity in December: 83%
The months with the highest relative humidity are January and August (86%).
The month with the lowest relative humidity is May (81%).
Average rainfall in December
Petersburg, AK
- Average rainfall in December: 4.65"
The wettest month (with the highest rainfall) is October (6.3").
The driest month (with the least rainfall) is May (2.01").
Average rainfall days in December
Petersburg, AK
- Average rainfall days in December: 14.6 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).
Average snowfall in December
Petersburg, AK
- Average snowfall in December: 10.67"
The month with the highest snowfall is March (13.46").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Petersburg, AK
- Average snowfall days in December: 8.4 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).
Average sea temperature in December
Petersburg, AK
- Average sea temperature in December: 44.3°F
The best month for swimming (with the highest average sea temperature) is August (54.2°F).
The coldest month (with the lowest average sea temperature) is March (41°F).
Average daylight in December /
Average sunshine in December
Petersburg, AK
- Average daylight in December: 6h and 5min
The month with the longest days is June (Average daylight: 17h and 42min).
The month with the shortest days is December (Average daylight: 6h and 54min).
- Average sunshine in December: 3h and 5min
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).
Average sunshine days in December
Petersburg, AK
- Average sunshine days in December: 12.5 days
The month with the most sunshine days is December (12.5 days).
The month with the least sunshine days is November (8 days).
Average UV index in December
Petersburg, AK
- Average UV index in December: 1
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).
Average cloud cover in December
Petersburg, AK
- Average cloud cover in December: 59
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).
Average visibility in December
Petersburg, AK
- Average visibility in December: 6mi
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).
Petersburg, Alaska, USA
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