January weather forecastThunder Bay, Canada
January
Weather in January
In Thunder Bay, Canada, January is the coldest month of the year. The temperature reaches as low as -20.6°C (-5.1°F) and it rarely rises above -8°C (17.6°F). The city also experiences its highest snowfall in this month, with an average of 365mm (14.37") of snow covering the ground. It is also one of the darkest months, with few hours of daylight and sunshine. The harsh winter conditions make indoor activities more popular in January.Temperature
January is the coldest month, with the temperature often reaching an average high of -8°C (17.6°F) and an average low of -20.6°C (-5.1°F).Rainfall
The month with the least rainfall is January, when the rain falls for 0.6 days and typically collects 0mm (0") of precipitation.Snowfall
Months with snowfall are January through May, September through December. In Thunder Bay, in January, snow falls for 12.9 days, with typically accumulated 365mm (14.37") 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: In the context of swimming, this situation is viewed as life-threatening and poses serious risks. The sensation of cold is painfully acute, leading to rapid hyperventilation. Using a specialized swimsuit is imperative to decrease thermal injury.
Daylight
In Thunder Bay, the average length of the day in January is 8h and 52min.On the first day of January in Thunder Bay, sunrise is at 8:48 am and sunset at 5:12 pm. On the last day of the month, sunrise is at 8:27 am and sunset at 5:53 pm EST.
Sunshine
In Thunder Bay, the average sunshine in January is 3.5h.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for average individuals.Note: The maximum UV index of 1 during January leads to these instructions:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Thunder Bay, Canada
- Average high temperature in January: -8°C
The warmest month (with the highest average high temperature) is July (24.3°C).
The month with the lowest average high temperature is January (-8°C).
- Average low temperature in January: -20.6°C
The month with the highest average low temperature is July (11.1°C).
The coldest month (with the lowest average low temperature) is January (-20.6°C).
Average rainfall in January
Thunder Bay, Canada
- Average rainfall in January: 0.4mm
The wettest month (with the highest rainfall) is August (89.5mm).
The driest month (with the least rainfall) is January (0.4mm).
Average rainfall days in January
Thunder Bay, Canada
- Average rainfall days in January: 0.6 days
The month with the highest number of rainy days is June (13.8 days).
The month with the least rainy days is January (0.6 days).
Average snowfall in January
Thunder Bay, Canada
- Average snowfall in January: 365mm
The month with the highest snowfall is December (389mm).
The months with the least snowfall are June, July and August (0mm).
Average snowfall days in January
Thunder Bay, Canada
- Average snowfall days in January: 12.9 days
The month with the highest number of snowfall days is December (13.9 days).
The months with the least snowfall days are June, July and August (0 days).
Average sea temperature in January
Thunder Bay, Canada
- Average sea temperature in January: 2°C
The best months for swimming (with the highest average sea temperature) are August and September (13°C).
The coldest months (with the lowest average sea temperature) are January, February, March and April (2°C).
Average daylight in January /
Average sunshine in January
Thunder Bay, Canada
- Average daylight in January: 8h and 54min
The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in January: 3h and 30min
The month with the most sunshine is June (Average sunshine: 8h and 42min).
The months with the least sunshine are November and December (Average sunshine: 2h and 54min).
Average UV index in January
Thunder Bay, Canada
- Average UV index in January: 1
The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 1).
