March weather forecast
Thunder Bay, Canada

The arrival of March signals the transition from winter to spring in Thunder Bay. Temperatures start to shift from extreme lows towards a more bearable range. The significant decrease in snowfall to 182mm (7.17") coupled with increased hours of sunlight signifies an end to the harsh winter. March ushers in outdoor activities and the blooming of the first spring flowers.

Temperature

The commencement of March sees a shift in the average high-temperature, moving from a freezing cold -5°C (23°F) in February to a cold 0.6°C (33.1°F). Thunder Bay usually reports an average low-temperature of -10.7°C (12.7°F) during the month of March.

Rainfall

In Thunder Bay, during March, the rain falls for 3.4 days and regularly aggregates up to 16mm (0.63") of precipitation. In Thunder Bay, Canada, during the entire year, the rain falls for 92.6 days and collects up to 547mm (21.54") of precipitation.

Snowfall

Months with snowfall in Thunder Bay are January through May, September through December. In Thunder Bay, in March, snow falls for 8.4 days, with typically accumulated 182mm (7.17") of snow. In Thunder Bay, during the entire year, snow falls for 62.7 days and aggregates up to 1631mm (64.21") of snow.

Sea temperature

January through April, with an average sea temperature of 2°C (35.6°F), are months with the coldest seawater.
Note: During swimming, this state is an instant threat to life. Breathing is uncontrollable, and coherent thought processes nearly vanish. A specialized swimsuit is crucial to minimize thermal dissipation.

Daylight

The average length of the day in March in Thunder Bay, Canada, is 11h and 56min.
On the first day of the month, sunrise is at 7:36 am and sunset at 6:41 pm EST. On the last day of March, sunrise is at 7:35 am and sunset at 8:26 pm EDT.
Note: On Sunday, 10. March 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from EST to EDT. Daylight Saving Time lasts until Sunday, 03. November 2024, at 2:00 am; consequently, the time zone reverts from EDT to EST.

Sunshine

In March, the average sunshine is 5.2h.

UV index

In March, the average daily maximum UV index is 3. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: The average daily UV index of 3 in March transforms into the following instructions:
Be vigilant - A duty to shield skin and eyes from injury exists. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Remember! The Sun's UV radiation can be magnified almost twofold by the reflection of snow.