March Weather in Watertown, United States

Last updated: June 24, 2025

In March, the average temperature in Watertown, United States hovers around 4°C (39°F). Temperatures can swing significantly, with a minimum of -15°C (6°F) and a maximum of 24°C (76°F). Expect 91 mm (3.6 in) of precipitation spread over 10 days, contributing to an average humidity of 81%.

March Temperature in Watertown

In March in Watertown, the average temperature is 4°C (39°F), with maximums reaching 24°C (76°F) and minimums dipping as low as -15°C (6°F). It's advisable to pack layered clothing to accommodate the wide temperature range during your travels.

March Weather in Watertown: Daily Temperature Highs, Lows, and Averages

The chart illustrates March temperature patterns in Watertown, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Watertown, March typically has an average temperature of 4°C (39°F), with highs reaching up to 24°C (76°F) and lows dropping to around -15°C (6°F).

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

March Precipitation in Watertown

In Watertown in March, the precipitation amount totals 91 mm (3.6 in) over a span of 10 days.

March Precipitation Trends in Watertown

The chart displays monthly precipitation patterns in Watertown, with values for each month alongside March’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how March’s conditions compare to those of other months. In Watertown, March typically receives around 91 mm (3.6 inches) of precipitation spread over approximately 10 days.

Data source: Precipitation data for March generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

March Humidity in Watertown

In Watertown in March, humidity is 81%. With an average temperature of 4°C (39°F), this humidity feels like a chilling dampness that penetrates even the warmest layers of clothing, making outdoor exploration uncomfortable and prompting travelers to seek refuge indoors.

March Average Humidity in Watertown

This chart illustrates the average monthly humidity levels in Watertown, with March’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In March, average humidity in Watertown is approximately 81%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for March generated using information from the Copernicus Climate Change Service.

March UV Index in Watertown

In Watertown in March, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Watertown, you can refer to this Hourly UV Index in Watertown.

Maximum UV Index Levels in Watertown for March

The chart shows the monthly maximum UV Index (UVI) for Watertown in March, 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 March, the maximum UV index in Watertown typically reaches 6, which falls under the high exposure category.

Data source: Watertown March 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 March Weather in Watertown Compares to Other Months

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

This table compares monthly weather conditions in Watertown, showing how March’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	0°C (32°F)	69 mm (2.7 inches)	84%	moderate
February Weather	1°C (34°F)	93 mm (3.7 inches)	82%	moderate
March Weather	4°C (39°F)	91 mm (3.6 inches)	81%	high
April Weather	9°C (49°F)	130 mm (5.1 inches)	78%	very high
May Weather	15°C (60°F)	110 mm (4.3 inches)	69%	very high
June Weather	20°C (69°F)	99 mm (3.9 inches)	69%	very high
July Weather	24°C (75°F)	143 mm (5.6 inches)	62%	very high
August Weather	23°C (74°F)	94 mm (3.7 inches)	65%	very high
September Weather	19°C (67°F)	105 mm (4.1 inches)	68%	very high
October Weather	14°C (57°F)	138 mm (5.4 inches)	74%	high
November Weather	6°C (44°F)	93 mm (3.7 inches)	82%	moderate
December Weather	2°C (36°F)	124 mm (4.9 inches)	80%	low