January Weather in Bolton, United States

Last updated: June 24, 2025

In January, the average temperature in Bolton, United States hovers around 9°C (48°F). Expect a chilly minimum of -10°C (13°F) and a comfortable maximum of 26°C (79°F). With 75 mm (2.9 in) of precipitation spread over 8 days, don’t forget your umbrella! The air is quite humid, with an average humidity level of 85%, adding to the cool atmosphere.

January Temperature in Bolton

In January in Bolton, the average temperature is 9°C (48°F). Maximum temperatures can reach 26°C (79°F), while the minimum can drop as low as -10°C (13°F). Be prepared for a wide range of temperatures when traveling to Bolton this time of year.

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

The chart illustrates January temperature patterns in Bolton, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Bolton, January typically has an average temperature of 9°C (48°F), with highs reaching up to 26°C (79°F) and lows dropping to around -10°C (13°F).

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

January Precipitation in Bolton

In Bolton in January, the precipitation amount is 75 mm (2.9 in) over a span of 8 days.

January Precipitation Trends in Bolton

The chart displays monthly precipitation patterns in Bolton, 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 Bolton, January typically receives around 75 mm (2.9 inches) of precipitation spread over approximately 8 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 Bolton

In Bolton in January humidity is 85%. With an average temperature of 9°C (48°F), this humidity feels like a damp chill enveloping you, making outdoor activities less enjoyable and requiring extra layers to stay warm and comfortable while traveling.

January Average Humidity in Bolton

This chart illustrates the average monthly humidity levels in Bolton, 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 Bolton 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 Bolton

In Bolton 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 Bolton for better planning.

Maximum UV Index Levels in Bolton for January

The chart shows the monthly maximum UV Index (UVI) for Bolton 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 Bolton typically reaches 4, which falls under the moderate exposure category.

Data source: Bolton 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 Bolton Compares to Other Months

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

This table compares monthly weather conditions in Bolton, 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 (48°F)	75 mm (2.9 inches)	85%	moderate
February Weather	12°C (53°F)	89 mm (3.5 inches)	82%	high
March Weather	13°C (56°F)	67 mm (2.6 inches)	81%	very high
April Weather	18°C (64°F)	97 mm (3.8 inches)	80%	very high
May Weather	22°C (72°F)	128 mm (5.0 inches)	81%	extreme
June Weather	25°C (77°F)	166 mm (6.5 inches)	81%	extreme
July Weather	27°C (80°F)	178 mm (7.0 inches)	81%	extreme
August Weather	26°C (80°F)	210 mm (8.3 inches)	80%	very high
September Weather	24°C (76°F)	176 mm (6.9 inches)	79%	very high
October Weather	20°C (68°F)	65 mm (2.6 inches)	80%	very high
November Weather	13°C (55°F)	100 mm (3.9 inches)	85%	high
December Weather	10°C (51°F)	127 mm (5.0 inches)	86%	moderate