January Weather in Winchester, United States

Last updated: June 24, 2025

In January, the average temperature in Winchester, United States hovers around -2°C (30°F), though it can dip as low as -25°C (-13°F) and rise to a maximum of 18°C (64°F). Precipitation is fairly frequent, with around 74 mm (2.9 in) falling over 9 days, and average humidity sits at a notable 85%, creating a chilly and damp atmosphere.

January Temperature in Winchester

In January in Winchester, the average temperature is -2°C (30°F), with maximums reaching 18°C (64°F) and minimums plummeting as low as -25°C (-13°F). This wide temperature range suggests that travelers should prepare for both chilly conditions and occasional warmer days during their visit.

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

The chart illustrates January temperature patterns in Winchester, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Winchester, January typically has an average temperature of -2°C (30°F), with highs reaching up to 18°C (64°F) and lows dropping to around -25°C (-13°F).

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

January Precipitation in Winchester

In Winchester in January, the precipitation amount is 74 mm (2.9 in), which occurs over a span of 9 days.

January Precipitation Trends in Winchester

The chart displays monthly precipitation patterns in Winchester, 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 Winchester, January typically receives around 74 mm (2.9 inches) of precipitation spread over approximately 9 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 Winchester

In Winchester in January humidity is 85%. With an average temperature of -2°C (30°F), this humidity feels like a frigid mist wrapping around you, making your breath visible and every step more challenging, as the cold air clings to your skin and chills you to the bone while traveling.

January Average Humidity in Winchester

This chart illustrates the average monthly humidity levels in Winchester, 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 Winchester is approximately 85%, 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 Winchester

In Winchester 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 Winchester, you can check the information here.

Maximum UV Index Levels in Winchester for January

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

Data source: Winchester 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 Winchester Compares to Other Months

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

This table compares monthly weather conditions in Winchester, 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 (30°F)	74 mm (2.9 inches)	85%	moderate
February Weather	0°C (32°F)	94 mm (3.7 inches)	85%	moderate
March Weather	5°C (42°F)	107 mm (4.2 inches)	86%	high
April Weather	11°C (51°F)	98 mm (3.9 inches)	87%	very high
May Weather	17°C (63°F)	137 mm (5.4 inches)	81%	very high
June Weather	22°C (72°F)	121 mm (4.8 inches)	82%	extreme
July Weather	24°C (76°F)	105 mm (4.1 inches)	81%	very high
August Weather	23°C (73°F)	101 mm (4.0 inches)	79%	very high
September Weather	20°C (69°F)	84 mm (3.3 inches)	78%	very high
October Weather	14°C (57°F)	98 mm (3.9 inches)	81%	high
November Weather	5°C (41°F)	84 mm (3.3 inches)	89%	moderate
December Weather	2°C (35°F)	72 mm (2.8 inches)	86%	low