January Weather in Marine on Saint Croix, United States

Last updated: June 24, 2025

In Marine on Saint Croix, United States, the average temperature in January hovers around -9°C (16°F), creating a chilling atmosphere. Temperatures can plummet to a bone-chilling -34°C (-28°F) at times, while occasionally peaking at a relatively warmer 7°C (44°F). Expect about 25 mm (1.0 in) of precipitation spread over 5 days, contributing to an average humidity level of a brisk 87%.

January Temperature in Marine on Saint Croix

In January in Marine on Saint Croix, the average temperature is -9°C (16°F), with maximums reaching 7°C (44°F) and minimums dipping as low as -34°C (-28°F). Travelers should be prepared for extremely cold conditions and dress accordingly.

January Weather in Marine on Saint Croix: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Marine on Saint Croix, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Marine on Saint Croix, January typically has an average temperature of -9°C (16°F), with highs reaching up to 7°C (44°F) and lows dropping to around -34°C (-28°F).

Data source: Temperature data for Marine on Saint Croix generated using information from the Copernicus Climate Change Service.

January Precipitation in Marine on Saint Croix

In Marine on Saint Croix in January, the total precipitation amount is 25 mm (1.0 in) over a span of 5 days.

January Precipitation Trends in Marine on Saint Croix

The chart displays monthly precipitation patterns in Marine on Saint Croix, 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 Marine on Saint Croix, January typically receives around 25 mm (1.0 inches) of precipitation spread over approximately 5 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 Marine on Saint Croix

In Marine on Saint Croix in January humidity is 87%. With an average temperature of -9°C (16°F), this humidity feels like a heavy blanket of moisture that clings to your skin, making it uncomfortable for traveling and causing your breath to mist in the cold air while navigating the wintry landscape.

January Average Humidity in Marine on Saint Croix

This chart illustrates the average monthly humidity levels in Marine on Saint Croix, 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 Marine on Saint Croix is approximately 87%, 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 Marine on Saint Croix

In Marine on Saint Croix in January, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in Marine on Saint Croix, you can visit Hourly UV Index in Marine on Saint Croix.

Maximum UV Index Levels in Marine on Saint Croix for January

The chart shows the monthly maximum UV Index (UVI) for Marine on Saint Croix 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 Marine on Saint Croix typically reaches 2, which falls under the low exposure category.

Data source: Marine on Saint Croix 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 Marine on Saint Croix Compares to Other Months

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

This table compares monthly weather conditions in Marine on Saint Croix, 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 (16°F)	25 mm (1.0 inches)	87%	low
February Weather	-9°C (17°F)	35 mm (1.4 inches)	90%	moderate
March Weather	0°C (33°F)	53 mm (2.1 inches)	85%	moderate
April Weather	6°C (43°F)	88 mm (3.5 inches)	84%	high
May Weather	15°C (59°F)	127 mm (5.0 inches)	78%	very high
June Weather	21°C (71°F)	95 mm (3.7 inches)	80%	very high
July Weather	23°C (74°F)	101 mm (4.0 inches)	81%	very high
August Weather	21°C (70°F)	123 mm (4.9 inches)	81%	very high
September Weather	17°C (64°F)	107 mm (4.2 inches)	81%	high
October Weather	9°C (48°F)	101 mm (4.0 inches)	84%	moderate
November Weather	0°C (33°F)	39 mm (1.5 inches)	88%	moderate
December Weather	-5°C (23°F)	55 mm (2.2 inches)	84%	low