Thunder Bay Weather Outlook: A Sunny but Frosty Start on March 21, 2024

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Weather Outlook Pine Trees and Blue Sky

THUNDER BAY – WEATHER – Thunder Bay experiences a crisp morning on March 21, 2024, as the city wakes up to clear skies and a chilly -17°C. Despite the sun’s promise, the cold air remains firmly in place, reminiscent of winter’s hold.

Here’s a detailed look at what Thunder Bay can expect weather-wise in the days ahead.

Today’s Weather Overview

Current Conditions

At 7:00 AM EDT, Thunder Bay Airport reports clear conditions with a temperature of -17.3°C. The dew point sits at a frigid -21.1°C, and humidity is at 72%. A light west-southwest wind at 6 km/h adds a bite to the air, bringing the wind chill down to -22°C. Visibility is excellent at 32 km, suggesting a clear day for all activities.

Looking forward to the Weather Forecast

Today, Thunder Bay is set to enjoy sunny skies, with winds shifting to the west at 20 km/h later in the morning. Temperatures will rise to a high of -3°C, but the wind chill will make it feel as cold as -28°C in the morning and -7°C in the afternoon.

There’s a risk of frostbite due to the cold, and the UV index is moderate at 3.

Tonight, the skies will remain clear until partly cloudy conditions develop around midnight. Winds will be up to 15 km/h, and the temperature will drop to a low of -15°C. Evening wind chills will be around -8°C, dropping to -19°C overnight.

Friday, March 22, will see morning clearing, with northwest winds picking up to 20 km/h and gusting to 40 km/h by late morning. The high is expected to reach -2°C, with wind chills of -18°C in the morning and -8°C in the afternoon. The UV index will be low at 2.

The weekend forecast calls for continued sunny skies on Saturday, March 23, with a high of -4°C and a clear night as temperatures fall to -18°C. Sunday, March 24, brings a mix of sun and cloud with a high of -5°C, followed by a cloudy night and a low of -11°C.

Wardrobe Recommendations

With the persistent cold and significant wind chill factors, dressing in warm, layered clothing is essential. A thermal base layer, combined with a fleece or wool mid-layer and a windproof outer layer, will provide adequate protection. Accessories such as gloves, a warm hat, and a scarf are vital to combat the cold, especially in the morning and evening.

Weather Trivia

Thunder Bay is no stranger to spring cold snaps. The city once recorded a surprising late March snowfall of over 15 cm in a single day, underscoring the unpredictable nature of spring weather in Northern Ontario.

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