January Weather in Ancaster, Canada

Last updated: June 18, 2025

In Ancaster, Canada, the weather in January showcases a chilly average temperature of -4°C (25°F). Expect the mercury to dip as low as -26°C (-15°F) or rise to a comfortable 13°C (56°F). During this time, precipitation amounts to 69 mm (2.7 in) across about 8 days, contributing to an average humidity level of 90%. Prepare for a frosty but intriguing month!

January Temperature in Ancaster

In January in Ancaster, the average temperature is -4°C (25°F), with maximums reaching 13°C (56°F) and minimums dropping to as low as -26°C (-15°F). It's advisable to pack warm clothing and be prepared for a wide range of temperatures if you're planning to travel during this time.

January Weather in Ancaster: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Ancaster, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ancaster, January typically has an average temperature of -4°C (25°F), with highs reaching up to 13°C (56°F) and lows dropping to around -26°C (-15°F).

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

January Precipitation in Ancaster

In Ancaster in January, the precipitation amount is 69 mm (2.7 in) that falls over a period of 8 days.

January Precipitation Trends in Ancaster

The chart displays monthly precipitation patterns in Ancaster, 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 Ancaster, January typically receives around 69 mm (2.7 inches) of precipitation spread over approximately 8 days.

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

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Millimeters (mm) Inches (in)

January Humidity in Ancaster

In Ancaster in January humidity is 90%. With an average temperature of -4°C (25°F), this humidity feels like a dense, icy blanket wrapping around you, making travel feel particularly stifling in the cold despite the sub-zero temperatures.

January Average Humidity in Ancaster

This chart illustrates the average monthly humidity levels in Ancaster, 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 Ancaster is approximately 90%, 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 Ancaster

In Ancaster in January, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in Ancaster, you can visit Hourly UV Index in Ancaster.

Maximum UV Index Levels in Ancaster for January

The chart shows the monthly maximum UV Index (UVI) for Ancaster 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 Ancaster typically reaches 2, which falls under the low exposure category.

Data source: Ancaster 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 Ancaster Compares to Other Months

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

This table compares monthly weather conditions in Ancaster, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-4°C (25°F)	69 mm (2.7 inches)	90%	low
February Weather	-3°C (26°F)	73 mm (2.9 inches)	90%	moderate
March Weather	1°C (34°F)	64 mm (2.5 inches)	87%	moderate
April Weather	7°C (44°F)	103 mm (4.1 inches)	87%	very high
May Weather	14°C (57°F)	96 mm (3.8 inches)	82%	very high
June Weather	19°C (67°F)	98 mm (3.9 inches)	81%	very high
July Weather	22°C (73°F)	93 mm (3.6 inches)	79%	very high
August Weather	21°C (71°F)	89 mm (3.5 inches)	80%	very high
September Weather	18°C (64°F)	69 mm (2.7 inches)	81%	high
October Weather	11°C (53°F)	101 mm (4.0 inches)	84%	moderate
November Weather	3°C (38°F)	75 mm (2.9 inches)	88%	moderate
December Weather	-1°C (31°F)	73 mm (2.9 inches)	87%	low