January Weather in Fort St. John, Canada

Last updated: June 18, 2025

In January, the average temperature in Fort St. John, Canada hovers around -11°C (12°F). However, be prepared for extremes; temperatures can plummet to a frigid -41°C (-41°F) or rise to a milder 8°C (46°F). Expect 26 mm (1.0 in) of precipitation spread over 6 days, while an average humidity of 94% ensures a chilling, damp atmosphere.

January Temperature in Fort St. John

In January in Fort St. John, the average temperature is -11°C (12°F). Maximum temperatures can reach 8°C (46°F), while minimum temperatures can plummet to -41°C (-41°F). Be sure to pack plenty of warm clothing if you plan to travel during this time!

January Weather in Fort St. John: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Fort St. John, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Fort St. John, January typically has an average temperature of -11°C (12°F), with highs reaching up to 8°C (46°F) and lows dropping to around -41°C (-41°F).

Data source: Temperature data for Fort St. John generated using information from the Copernicus Climate Change Service.

January Precipitation in Fort St. John

In Fort St. John in January, the precipitation amount is 26 mm (1.0 in) over the course of 6 days.

January Precipitation Trends in Fort St. John

The chart displays monthly precipitation patterns in Fort St. John, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In Fort St. John, January typically receives around 26 mm (1.0 inches) of precipitation spread over approximately 6 days.

Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

January Humidity in Fort St. John

In Fort St. John in January humidity is 94%. With an average temperature of -11°C (12°F), this humidity feels like an icy fog clinging to your skin, making travel feel incredibly uncomfortable and frigid, as each breath pulls in the damp, chilling air that sharpens the bite of the cold.

January Average Humidity in Fort St. John

This chart illustrates the average monthly humidity levels in Fort St. John, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in Fort St. John is approximately 94%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Fort St. John

In Fort St. John in January, the maximum UV index is 1, which corresponds to a low Exposure Category. This means you have a time to burn of 45 minutes. For more details, you can check the Hourly UV Index in Fort St. John.

Maximum UV Index Levels in Fort St. John for January

The chart shows the monthly maximum UV Index (UVI) for Fort St. John in January, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In January, the maximum UV index in Fort St. John typically reaches 1, which falls under the low exposure category.

Data source: Fort St. John January UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How January Weather in Fort St. John Compares to Other Months

Weather in Fort St. John varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Fort St. John, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Fort St. John, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-11°C (12°F)	26 mm (1.0 inches)	94%	low
February Weather	-13°C (9°F)	26 mm (1.0 inches)	94%	low
March Weather	-6°C (22°F)	31 mm (1.2 inches)	89%	moderate
April Weather	2°C (35°F)	27 mm (1.1 inches)	86%	moderate
May Weather	10°C (51°F)	41 mm (1.6 inches)	82%	high
June Weather	15°C (59°F)	81 mm (3.2 inches)	80%	high
July Weather	16°C (61°F)	93 mm (3.7 inches)	83%	high
August Weather	15°C (59°F)	55 mm (2.2 inches)	80%	high
September Weather	9°C (49°F)	46 mm (1.8 inches)	83%	moderate
October Weather	2°C (37°F)	41 mm (1.6 inches)	86%	moderate
November Weather	-6°C (21°F)	50 mm (2.0 inches)	91%	low
December Weather	-10°C (15°F)	22 mm (0.9 inches)	95%	low