January Weather in Hamilton, United States

Last updated: June 24, 2025

The average temperature in Hamilton, United States during January hovers around -5°C (24°F). Expect a minimum plunge to -26°C (-14°F), while maximum temperatures can reach up to 17°C (63°F). With precipitation accumulating to 92 mm (3.6 in) over 14 days, the atmosphere tends to be quite humid, with an average humidity of 90%.

January Temperature in Hamilton

In January in Hamilton, the average temperature is -5°C (24°F). The maximum can reach 17°C (63°F), while the minimum can drop as low as -26°C (-14°F). Be sure to pack warm clothing and be prepared for a wide range of temperatures when traveling.

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 -5°C (24°F), with highs reaching up to 17°C (63°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 precipitation amount is 92 mm (3.6 in) over the course of 14 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 92 mm (3.6 inches) of precipitation spread over approximately 14 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 Hamilton

In Hamilton in January, humidity is 90%. With an average temperature of -5°C (24°F), this humidity feels like an icy mist wrapping around you, making every breath feel heavy and damp, while the cold sharpens the chill in the air, turning your travel experience into a battle against the harsh elements.

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 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 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	-5°C (24°F)	92 mm (3.6 inches)	90%	moderate
February Weather	-3°C (27°F)	101 mm (4.0 inches)	90%	moderate
March Weather	0°C (33°F)	93 mm (3.7 inches)	87%	high
April Weather	7°C (44°F)	121 mm (4.7 inches)	88%	very high
May Weather	14°C (57°F)	134 mm (5.3 inches)	82%	very high
June Weather	18°C (65°F)	119 mm (4.7 inches)	79%	very high
July Weather	21°C (70°F)	167 mm (6.6 inches)	78%	very high
August Weather	20°C (68°F)	137 mm (5.4 inches)	76%	very high
September Weather	16°C (62°F)	96 mm (3.8 inches)	78%	very high
October Weather	11°C (52°F)	168 mm (6.6 inches)	84%	high
November Weather	3°C (37°F)	108 mm (4.3 inches)	89%	moderate
December Weather	-2°C (29°F)	103 mm (4.1 inches)	86%	low