January Weather in Sandwich, United States

Last updated: June 24, 2025

In January, the average temperature in Sandwich, United States hovers around -6°C (21°F). However, temperatures can swing dramatically, with a chilly minimum of -28°C (-18°F) and a mild maximum of 13°C (56°F). During this month, expect 79 mm (3.1 in) of precipitation spread over 9 days, contributing to a high average humidity of 86%.

January Temperature in Sandwich

In January in Sandwich, the average temperature is -6°C (21°F). Maximums can reach 13°C (56°F) and minimums can be as low as -28°C (-18°F). Travelers should be prepared for a wide range of temperatures and dress in layers to stay comfortable.

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

The chart illustrates January temperature patterns in Sandwich, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sandwich, January typically has an average temperature of -6°C (21°F), with highs reaching up to 13°C (56°F) and lows dropping to around -28°C (-18°F).

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

January Precipitation in Sandwich

In Sandwich in January, the precipitation amount is 79 mm (3.1 in) spread over 9 days.

January Precipitation Trends in Sandwich

The chart displays monthly precipitation patterns in Sandwich, 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 Sandwich, January typically receives around 79 mm (3.1 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 Sandwich

In Sandwich in January humidity is 86%. With an average temperature of -6°C (21°F), this humidity feels like navigating through a thick fog, making every step feel heavier and the cold penetrate deeper, creating a chilling yet intriguing atmosphere for travelers.

January Average Humidity in Sandwich

This chart illustrates the average monthly humidity levels in Sandwich, 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 Sandwich is approximately 86%, 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 Sandwich

In Sandwich 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 Sandwich, you can check the information here.

Maximum UV Index Levels in Sandwich for January

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

Data source: Sandwich 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 Sandwich Compares to Other Months

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

This table compares monthly weather conditions in Sandwich, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-6°C (21°F)	79 mm (3.1 inches)	86%	moderate
February Weather	-5°C (24°F)	88 mm (3.5 inches)	84%	moderate
March Weather	-1°C (30°F)	76 mm (3.0 inches)	82%	moderate
April Weather	6°C (43°F)	137 mm (5.4 inches)	80%	very high
May Weather	13°C (55°F)	85 mm (3.4 inches)	72%	very high
June Weather	18°C (65°F)	102 mm (4.0 inches)	72%	very high
July Weather	21°C (70°F)	145 mm (5.7 inches)	67%	very high
August Weather	20°C (69°F)	95 mm (3.7 inches)	66%	very high
September Weather	17°C (62°F)	68 mm (2.7 inches)	71%	high
October Weather	10°C (51°F)	138 mm (5.4 inches)	78%	moderate
November Weather	2°C (36°F)	121 mm (4.8 inches)	84%	moderate
December Weather	-3°C (26°F)	127 mm (5.0 inches)	81%	low