Petersburg
Alaska, USA
Long-term weather forecast
Long-term weather forecast

March weather forecast and climate
Petersburg, AK

Colorful buildings, docked ships in Quaint fishing village in Petersburg, Alaska, on Mitkof Island
Colorful buildings, docked ships in Quaint fishing village in Petersburg, Alaska, on Mitkof Island
March, the first month of the spring, in Petersburg, is a frosty month, with average temperature ranging between max 43.3°F (6.3°C) and min 29.5°F (-1.4°C).

Temperature

In March, the average high-temperature is practically the same as in February - a chilly 43.3°F (6.3°C). In Petersburg, in March, the average low-temperature is 29.5°F (-1.4°C).

Ocean temperature

The month with the coldest seawater in Petersburg is March, with an average ocean temperature of 41°F (5°C). At temperatures below 50°F (10°C), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 55.4°F (13°C) is not comfortable.

Daylight

In Petersburg, the average length of the day in March is 11.9h.

What is the temperature in March in Petersburg?

The average high-temperature, in March, is 43.3°F (6.3°C), while the average low-temperature is 29.5°F (-1.4°C).

What is the month with the coldest ocean in Petersburg?

The month with the coldest seawater in Petersburg, Alaska, is March, with an average ocean temperature of 41°F (5°C). Swimming in 41°F (5°C) is considered life-threatening. Even a few minutes in 55.4°F (13°C) water is uncomfortable, and swimming below 50°F (10°C) may cause total loss of breathing control and cold shock, depending on a person's physique.

How cold is the water in March in Petersburg?

In Petersburg, Alaska, the average seawater temperature in March is 41°F (5°C). Swimming in 41°F (5°C) is considered life-threatening. Even a few minutes in 55.4°F (13°C) water is uncomfortable, and swimming below 50°F (10°C) may cause total loss of breathing control and cold shock, depending on a person's physique.

What is the average length of the day in March in Petersburg?

In Petersburg, the average length of the day in March is 11.9h.
Average temperature in March - Petersburg, AK
  • Average high temperature in March: 43.4°F

The warmest month (with the highest average high temperature) is July (63.9°F).
The month with the lowest average high temperature is January (34.9°F).

  • Average low temperature in March: 29.5°F

The month with the highest average low temperature is July (48°F).
The coldest month (with the lowest average low temperature) is January (23.4°F).

Average sea temperature in March - Petersburg, AK
  • Average sea temperature in March: 41°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 March - Petersburg, AK
  • Average daylight in March: 11.9h

The month with the longest days is June (Average daylight: 17.7h).
The month with shortest days is December (Average daylight: 6.9h).