January Weather in Hamilton, United States

Last updated: June 24, 2025

In January, the average temperature in Hamilton, United States hovers around -2°C (29°F), with a remarkable range from a chilling -26°C (-14°F) to a mild 16°C (61°F). Expect 54 mm (2.1 in) of precipitation spread over about 6 days, contributing to an average humidity level of 80%. Stay prepared for the variances that this month can bring!

January Temperature in Hamilton

In January, in Hamilton, the average temperature is -2°C (29°F), with maximums reaching 16°C (61°F) and minimums dropping as low as -26°C (-14°F). Travelers should be prepared for a wide range of temperatures and dress in layers to stay comfortable.

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 -2°C (29°F), with highs reaching up to 16°C (61°F) and lows dropping to around -26°C (-14°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 total precipitation amount is 54 mm (2.1 in) over the course of 6 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 54 mm (2.1 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 Hamilton

In Hamilton in January humidity is 80%. With an average temperature of -2°C (29°F), this humidity feels like a heavy, biting chill that seeps into your bones, making outdoor exploration uncomfortable and requiring extra layers to ward off both the cold and the dampness.

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 80%, 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 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in Hamilton, you can check the information here.

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 3, which falls under the moderate 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	-2°C (29°F)	54 mm (2.1 inches)	80%	moderate
February Weather	-1°C (31°F)	40 mm (1.6 inches)	78%	moderate
March Weather	7°C (45°F)	98 mm (3.8 inches)	75%	high
April Weather	12°C (53°F)	84 mm (3.3 inches)	77%	very high
May Weather	18°C (65°F)	200 mm (7.9 inches)	82%	very high
June Weather	25°C (76°F)	133 mm (5.2 inches)	83%	extreme
July Weather	26°C (79°F)	110 mm (4.3 inches)	81%	extreme
August Weather	24°C (76°F)	98 mm (3.9 inches)	78%	very high
September Weather	21°C (71°F)	93 mm (3.6 inches)	72%	very high
October Weather	13°C (56°F)	134 mm (5.3 inches)	72%	high
November Weather	6°C (43°F)	50 mm (2.0 inches)	84%	moderate
December Weather	2°C (36°F)	33 mm (1.3 inches)	86%	moderate