January Weather in Hamilton, United States

Last updated: June 24, 2025

In Hamilton, United States, the average temperature in January hovers around -6°C (22°F). Be prepared for chilly extremes, as temperatures can plunge to a minimum of -28°C (-18°F) and rise to a maximum of 5°C (42°F). During this month, expect about 65 mm (2.6 in) of precipitation over 13 days, contributing to an average humidity level of 93%. Stay warm and dry!

January Temperature in Hamilton

In January in Hamilton, the average temperature is -6°C (22°F). Maximums can reach 5°C (42°F) and minimums can be as low as -28°C (-18°F). Travelers should be prepared for very cold weather and extreme temperature fluctuations during this time.

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

The chart illustrates January temperature patterns in Hamilton, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hamilton, January typically has an average temperature of -6°C (22°F), with highs reaching up to 5°C (42°F) and lows dropping to around -28°C (-18°F).

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

January Precipitation in Hamilton

In Hamilton in January, the precipitation amount is 65 mm (2.6 in) spread over a duration of 13 days.

January Precipitation Trends in Hamilton

The chart displays monthly precipitation patterns in Hamilton, 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 Hamilton, January typically receives around 65 mm (2.6 inches) of precipitation spread over approximately 13 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 Hamilton

In Hamilton in January humidity is 93%. With an average temperature of -6°C (22°F), this humidity feels like a biting chill that seeps into your bones, making travel uncomfortable as the damp air clings to your clothing and slows your movements.

January Average Humidity in Hamilton

This chart illustrates the average monthly humidity levels in Hamilton, 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 Hamilton is approximately 93%, 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 Hamilton

In Hamilton 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 Hamilton, you can visit Hourly UV Index in Hamilton.

Maximum UV Index Levels in Hamilton for January

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

Data source: Hamilton 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 Hamilton Compares to Other Months

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

This table compares monthly weather conditions in Hamilton, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-6°C (22°F)	65 mm (2.6 inches)	93%	low
February Weather	-6°C (21°F)	138 mm (5.4 inches)	92%	moderate
March Weather	-1°C (30°F)	82 mm (3.2 inches)	89%	high
April Weather	1°C (34°F)	88 mm (3.4 inches)	85%	very high
May Weather	6°C (43°F)	76 mm (3.0 inches)	80%	very high
June Weather	12°C (54°F)	94 mm (3.7 inches)	78%	very high
July Weather	18°C (64°F)	26 mm (1.0 inches)	77%	very high
August Weather	17°C (62°F)	32 mm (1.2 inches)	66%	very high
September Weather	11°C (53°F)	45 mm (1.8 inches)	67%	very high
October Weather	2°C (37°F)	85 mm (3.4 inches)	77%	moderate
November Weather	-3°C (27°F)	81 mm (3.2 inches)	89%	moderate
December Weather	-7°C (20°F)	88 mm (3.5 inches)	95%	low