On Saturday, November 30, mostly cloudy weather, no precipitation are expected in Thunder Bay. The lowest air temperature will be -8°C at 4 am, the highest temperature will be -5°C around 10 pm. The atmospheric pressure will be within 740-743 mm Hg. The relative humidity 73-80%. The wind will be mainly northwesterly 7 m/s with maximum gusts up to 13 m/s. Ultraviolet index 1, no sun protection is required

On Sunday, December 1, mostly partly cloudy, no precipitation are expected in Thunder Bay. The lowest air temperature will be -6°C at 10 pm, the highest temperature will be -4°C around 4 pm. The atmospheric pressure will be within 744-752 mm Hg. The relative humidity 72-82%. The wind will be mainly northwesterly 6 m/s with maximum gusts up to 12 m/s. Ultraviolet index 1, no sun protection is required

On Monday, December 2, mostly cloudy weather, no precipitation are expected in Thunder Bay. The lowest air temperature will be -10°C at 10 pm, the highest temperature will be -6°C around 1 pm. The atmospheric pressure will be within 752-754 mm Hg. The relative humidity 72-83%. The wind will be mainly northwesterly 5 m/s with maximum gusts up to 9 m/s. Ultraviolet index 1, no sun protection is required

On Tuesday, December 3, mostly cloudy weather, light snow are expected in Thunder Bay. The lowest air temperature will be -13°C at 7 am, the highest temperature will be -7°C around 10 pm. The atmospheric pressure will be within 745-755 mm Hg. The relative humidity 67-86%. The wind will be mainly southerly 3 m/s with maximum gusts up to 12 m/s. Ultraviolet index 2, no sun protection is required

On Wednesday, December 4, mostly partly cloudy, light snow are expected in Thunder Bay. The lowest air temperature will be -9°C at 10 pm, the highest temperature will be -4°C around 1 pm. The atmospheric pressure will be within 734-742 mm Hg. The relative humidity 76-86%. The wind will be mainly westerly 9 m/s with maximum gusts up to 16 m/s. Ultraviolet index 2, no sun protection is required

On Thursday, December 5, mostly partly cloudy, light snow are expected in Thunder Bay. The lowest air temperature will be -17°C at 10 pm, the highest temperature will be -11°C around 1 am. The atmospheric pressure will be within 739-749 mm Hg. The relative humidity 63-77%. The wind will be mainly northwesterly 11 m/s with maximum gusts up to 20 m/s. Ultraviolet index 1, no sun protection is required

On Friday, December 6, mostly partly cloudy weather, no precipitation are expected in Thunder Bay. The lowest air temperature will be -22°C at 10 am, the highest temperature will be -17°C around 4 pm. The atmospheric pressure will be within 749-751 mm Hg. The relative humidity 60-73%. The wind will be mainly northwesterly 6 m/s with maximum gusts up to 15 m/s. Ultraviolet index 1, no sun protection is required

On Saturday, December 7, mostly cloudy weather, snow are expected in Thunder Bay. The lowest air temperature will be -23°C at 4 am, the highest temperature will be -7°C around 10 pm. The atmospheric pressure will be within 742-751 mm Hg. The relative humidity 71-88%. The wind will be mainly southerly 4 m/s with maximum gusts up to 8 m/s. Ultraviolet index 1, no sun protection is required

On Sunday, December 8, mostly partly cloudy, no precipitation are expected in Thunder Bay. The lowest air temperature will be -9°C at 10 pm, the highest temperature will be -2°C around 4 pm. The atmospheric pressure will be within 742-753 mm Hg. The relative humidity 78-92%. The wind will be mainly northerly 4 m/s with maximum gusts up to 14 m/s. Ultraviolet index 2, no sun protection is required

On Monday, December 9, mostly cloudy weather, snow are expected in Thunder Bay. The lowest air temperature will be -15°C at 7 pm, the highest temperature will be -10°C around 1 am. The atmospheric pressure will be within 743-751 mm Hg. The relative humidity 64-80%. The wind will be mainly southwesterly 5 m/s with maximum gusts up to 13 m/s. Ultraviolet index 1, no sun protection is required