Thunder Bay Canada Day Weekend Forecast: Sunshine to Showers


Current Conditions

Observed at: Thunder Bay Airport
Date: 6:00 AM EDT, Sunday, June 30, 2024
Condition: Mainly Sunny
Temperature: 4.0°C
Pressure: 102.5 kPa (rising)
Dew Point: 3.9°C
Humidity: 99%
Wind: WSW at 9 km/h
Visibility: 32 km

Forecast Overview

Sunday, June 30, 2024:

Thunder Bay will enjoy sunny skies today, with a northwest wind at 20 km/h becoming light near noon. The high will be 23°C. The UV index will be 6, indicating a high risk from the sun’s ultraviolet rays.


Expect clear skies tonight with temperatures dropping to a low of 7°C.

Monday, July 1, 2024:

Canada Day will be sunny with southeast winds picking up to 20 km/h early in the afternoon. The high will reach 22°C, with a very high UV index of 8, so sun protection is essential.

Monday Night:

Showers are expected to begin in the evening, with a low of 12°C.

Tuesday, July 2, 2024:

Rain will continue with showers throughout the day. The high will be 21°C.

Tuesday Night:

The night will be cloudy with a 60 percent chance of showers. The low will be 13°C.

Wardrobe Suggestions

For today, dress in layers to adjust from the cool morning to the warmer afternoon. Lightweight clothing, sunscreen, and sunglasses are recommended due to the high UV index. Tonight, a light jacket will be necessary as temperatures drop. On Canada Day, similar attire with sun protection is advised, along with a hat and long sleeves to guard against the very high UV rays. For Monday night and Tuesday, bring waterproof gear to stay dry in the showers.

Historical Weather Trivia

Did you know that the record high for June 30th in Thunder Bay is 33.0°C, set in 1963? The record low for this date is a chilly 1.1°C, recorded in 1965. Thunder Bay’s weather can vary greatly, offering both warmth and unexpected coolness.

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