January Weather in Winchester, United States

Last updated: June 24, 2025

In January, the average temperature in Winchester, United States hovers around 9°C (49°F), with a minimum dipping to -3°C (27°F) and a maximum peaking at 21°C (71°F). Expect a total precipitation of about 19 mm (0.8 in) spread over 3 days, accompanied by an average humidity level of 81%.

January Temperature in Winchester

In January in Winchester, the average temperature is 9°C (49°F), with a maximum reaching 21°C (71°F) and a minimum dropping as low as -3°C (27°F). Be prepared for a range of temperatures during your travels, so pack accordingly!

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 9°C (49°F), with highs reaching up to 21°C (71°F) and lows dropping to around -3°C (27°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 averaged 19 mm (0.8 in) over a span of 3 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 19 mm (0.8 inches) of precipitation spread over approximately 3 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 Winchester

In Winchester in January humidity is 81%. With an average temperature of 9°C (49°F), this humidity feels like a damp chill clinging to your skin, making outdoor explorations rather uncomfortable and potentially dreary for travelers.

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 81%, 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 reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Winchester for better planning.

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 4, 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	9°C (49°F)	19 mm (0.8 inches)	81%	moderate
February Weather	11°C (52°F)	20 mm (0.8 inches)	84%	high
March Weather	15°C (60°F)	17 mm (0.7 inches)	76%	very high
April Weather	21°C (70°F)	3 mm (0.1 inches)	64%	very high
May Weather	25°C (76°F)	6 mm (0.2 inches)	48%	extreme
June Weather	32°C (89°F)	1 mm (0.0 inches)	40%	extreme
July Weather	34°C (94°F)	13 mm (0.5 inches)	33%	extreme
August Weather	34°C (93°F)	5 mm (0.2 inches)	29%	extreme
September Weather	29°C (84°F)	2 mm (0.1 inches)	43%	very high
October Weather	20°C (69°F)	3 mm (0.1 inches)	61%	high
November Weather	15°C (59°F)	13 mm (0.5 inches)	76%	moderate
December Weather	9°C (49°F)	13 mm (0.5 inches)	78%	moderate