January Weather in Falmouth, United States

Last updated: June 24, 2025

In Falmouth, United States during January, the average temperature hovers around 4°C (39°F). Expect chilly conditions, with minimum temperatures plunging to -15°C (6°F) and occasionally reaching a high of 21°C (71°F). This month brings about 62 mm (2.4 in) of precipitation over approximately 7 days, contributing to an overall average humidity of 86%. Stay warm and prepared for some wet days ahead!

January Temperature in Falmouth

In January in Falmouth, the average temperature is 4°C (39°F). The maximum can reach 21°C (71°F), and the minimum can be as low as -15°C (6°F). Travelers should be prepared for a wide range of temperatures during this time.

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

The chart illustrates January temperature patterns in Falmouth, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Falmouth, January typically has an average temperature of 4°C (39°F), with highs reaching up to 21°C (71°F) and lows dropping to around -15°C (6°F).

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

January Precipitation in Falmouth

In Falmouth in January, the total precipitation amount is 62 mm (2.4 in) observed over a span of 7 days.

January Precipitation Trends in Falmouth

The chart displays monthly precipitation patterns in Falmouth, 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 Falmouth, January typically receives around 62 mm (2.4 inches) of precipitation spread over approximately 7 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 Falmouth

In Falmouth in January humidity is 86%. With an average temperature of 4°C (39°F), this humidity feels like a chilly mist enveloping you, making it essential to bundle up while exploring, as each breath comes with a damp chill that can be quite refreshing yet starkly invigorating for travelers.

January Average Humidity in Falmouth

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

In Falmouth 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 Falmouth, you can check the information here.

Maximum UV Index Levels in Falmouth for January

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

Data source: Falmouth 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 Falmouth Compares to Other Months

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

This table compares monthly weather conditions in Falmouth, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	4°C (39°F)	62 mm (2.4 inches)	86%	moderate
February Weather	6°C (43°F)	90 mm (3.6 inches)	86%	moderate
March Weather	9°C (49°F)	76 mm (3.0 inches)	86%	high
April Weather	15°C (59°F)	101 mm (4.0 inches)	84%	very high
May Weather	20°C (68°F)	109 mm (4.3 inches)	78%	very high
June Weather	24°C (76°F)	109 mm (4.3 inches)	79%	very high
July Weather	27°C (81°F)	91 mm (3.6 inches)	70%	very high
August Weather	26°C (78°F)	148 mm (5.8 inches)	59%	very high
September Weather	23°C (73°F)	91 mm (3.6 inches)	68%	very high
October Weather	17°C (63°F)	109 mm (4.3 inches)	80%	high
November Weather	9°C (49°F)	77 mm (3.0 inches)	86%	moderate
December Weather	6°C (43°F)	88 mm (3.5 inches)	85%	moderate