March Weather in Somerville, United States

Last updated: June 24, 2025

In March, the average temperature in Somerville, United States hovers around 3°C (38°F). However, temperatures can dip to a chilly -14°C (7°F) or rise to a pleasant 19°C (66°F). Expect about 96 mm (3.8 in) of precipitation spread over 10 days, contributing to an average humidity of 82%.

March Temperature in Somerville

In March in Somerville, the average temperature is 3°C (38°F), with maximums reaching 19°C (66°F) and minimums plummeting to -14°C (7°F). Pack layers to stay comfortable as you explore the diverse weather conditions!

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

The chart illustrates March temperature patterns in Somerville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Somerville, March typically has an average temperature of 3°C (38°F), with highs reaching up to 19°C (66°F) and lows dropping to around -14°C (7°F).

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

March Precipitation in Somerville

In Somerville in March, the total precipitation amount is 96 mm (3.8 in) over a span of 10 days.

March Precipitation Trends in Somerville

The chart displays monthly precipitation patterns in Somerville, 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 Somerville, March typically receives around 96 mm (3.8 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 Somerville

In Somerville in March humidity is 82%. With an average temperature of 3°C (38°F), this humidity feels like a chilly blanket wrapped around you, making outdoor adventures quite uncomfortable and requiring extra layers to stay warm while exploring.

March Average Humidity in Somerville

This chart illustrates the average monthly humidity levels in Somerville, 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 Somerville is approximately 82%, 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 Somerville

In Somerville in March, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Somerville.

Maximum UV Index Levels in Somerville for March

The chart shows the monthly maximum UV Index (UVI) for Somerville 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 Somerville typically reaches 5, which falls under the moderate exposure category.

Data source: Somerville 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 Somerville Compares to Other Months

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

This table compares monthly weather conditions in Somerville, 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)	77 mm (3.0 inches)	86%	moderate
February Weather	1°C (33°F)	96 mm (3.8 inches)	84%	moderate
March Weather	3°C (38°F)	96 mm (3.8 inches)	82%	moderate
April Weather	8°C (47°F)	141 mm (5.6 inches)	80%	very high
May Weather	14°C (57°F)	91 mm (3.6 inches)	72%	very high
June Weather	19°C (66°F)	87 mm (3.4 inches)	72%	very high
July Weather	22°C (73°F)	116 mm (4.6 inches)	67%	very high
August Weather	22°C (73°F)	72 mm (2.8 inches)	66%	very high
September Weather	19°C (66°F)	84 mm (3.3 inches)	71%	high
October Weather	13°C (57°F)	146 mm (5.8 inches)	78%	high
November Weather	6°C (44°F)	101 mm (4.0 inches)	84%	moderate
December Weather	2°C (35°F)	129 mm (5.1 inches)	81%	low