January Weather in Lancaster, United States

Last updated: June 24, 2025

In January, the average temperature in Lancaster, United States hovers around -3°C (26°F), with lows dipping as low as -29°C (-21°F) and highs reaching up to 14°C (58°F). Expect 54 mm (2.1 in) of precipitation spread over approximately 6 days, accompanied by an average humidity of 78%. Prepare for a chilly and damp month ahead!

January Temperature in Lancaster

In January in Lancaster, the average temperature is -3°C (26°F), with a maximum that can reach 14°C (58°F) and a minimum that can drop as low as -29°C (-21°F). Travelers should be prepared for a wide range of temperatures and dress accordingly for the cold.

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

The chart illustrates January temperature patterns in Lancaster, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Lancaster, January typically has an average temperature of -3°C (26°F), with highs reaching up to 14°C (58°F) and lows dropping to around -29°C (-21°F).

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

January Precipitation in Lancaster

In Lancaster in January, the total precipitation amount is 54 mm (2.1 in) over the course of 6 days.

January Precipitation Trends in Lancaster

The chart displays monthly precipitation patterns in Lancaster, 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 Lancaster, 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 Lancaster

In Lancaster in January, humidity is 78%. With an average temperature of -3°C (26°F), this humidity feels like an icy blanket wrapping around you, making travel uncomfortable and breathless as the cold air mixes with dampness, creating a chilling sensation that lingers.

January Average Humidity in Lancaster

This chart illustrates the average monthly humidity levels in Lancaster, 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 Lancaster is approximately 78%, 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 Lancaster

In Lancaster 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 Lancaster, you can check the information here.

Maximum UV Index Levels in Lancaster for January

The chart shows the monthly maximum UV Index (UVI) for Lancaster 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 Lancaster typically reaches 3, which falls under the moderate exposure category.

Data source: Lancaster 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 Lancaster Compares to Other Months

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

This table compares monthly weather conditions in Lancaster, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-3°C (26°F)	54 mm (2.1 inches)	78%	moderate
February Weather	-2°C (29°F)	53 mm (2.1 inches)	80%	moderate
March Weather	6°C (42°F)	98 mm (3.9 inches)	77%	high
April Weather	10°C (51°F)	84 mm (3.3 inches)	77%	very high
May Weather	18°C (64°F)	152 mm (6.0 inches)	77%	very high
June Weather	24°C (75°F)	120 mm (4.7 inches)	81%	extreme
July Weather	26°C (79°F)	82 mm (3.2 inches)	81%	extreme
August Weather	24°C (75°F)	75 mm (2.9 inches)	77%	very high
September Weather	21°C (70°F)	116 mm (4.6 inches)	73%	very high
October Weather	12°C (55°F)	126 mm (5.0 inches)	75%	high
November Weather	5°C (41°F)	50 mm (2.0 inches)	85%	moderate
December Weather	1°C (34°F)	36 mm (1.4 inches)	83%	low