January Weather in Colchester, United States

Last updated: June 24, 2025

In Colchester, United States, the average temperature for January hovers around -3°C (27°F). Temperatures can plummet to a frosty -30°C (-21°F), while occasionally reaching a pleasant 15°C (59°F). Expect about 58 mm (2.3 in) of precipitation over 7 days, combined with an average humidity level of 81%.

January Temperature in Colchester

In January in Colchester, the average temperature is -3°C (27°F), with maximums reaching 15°C (59°F) and minimums dropping as low as -30°C (-21°F). Visitors should be prepared for a wide range of temperatures while exploring Colchester during this time.

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

The chart illustrates January temperature patterns in Colchester, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Colchester, January typically has an average temperature of -3°C (27°F), with highs reaching up to 15°C (59°F) and lows dropping to around -30°C (-21°F).

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

January Precipitation in Colchester

In Colchester in January, the precipitation amount is 58 mm (2.3 in) over the course of 7 days.

January Precipitation Trends in Colchester

The chart displays monthly precipitation patterns in Colchester, 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 Colchester, January typically receives around 58 mm (2.3 inches) of precipitation spread over approximately 7 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 Colchester

In Colchester in January humidity is 81%. With an average temperature of -3°C (27°F), this humidity feels like a biting chill that seeps into your bones, making traveling uncomfortable and forcing you to bundle up tightly to fend off the cold dampness.

January Average Humidity in Colchester

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

In Colchester 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 Colchester, you can check the information here.

Maximum UV Index Levels in Colchester for January

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

Data source: Colchester 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 Colchester Compares to Other Months

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

This table compares monthly weather conditions in Colchester, 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 (27°F)	58 mm (2.3 inches)	81%	moderate
February Weather	-2°C (29°F)	65 mm (2.5 inches)	81%	moderate
March Weather	6°C (42°F)	116 mm (4.6 inches)	81%	high
April Weather	11°C (51°F)	105 mm (4.1 inches)	82%	very high
May Weather	18°C (64°F)	169 mm (6.6 inches)	78%	very high
June Weather	24°C (75°F)	136 mm (5.3 inches)	81%	extreme
July Weather	25°C (78°F)	95 mm (3.7 inches)	79%	very high
August Weather	24°C (75°F)	93 mm (3.7 inches)	77%	very high
September Weather	21°C (70°F)	92 mm (3.6 inches)	78%	very high
October Weather	13°C (56°F)	112 mm (4.4 inches)	78%	high
November Weather	5°C (41°F)	53 mm (2.1 inches)	87%	moderate
December Weather	1°C (35°F)	47 mm (1.9 inches)	84%	low