March Weather in Somerville, United States

Last updated: June 24, 2025

In March, the average temperature in Somerville, United States hovers around 13°C (55°F), making it a unique time of year. Expect minimums that can drop to a chilly -7°C (20°F) and maximums soaring up to a warm 30°C (86°F). Be prepared for 14 rainy days with a total precipitation of 165 mm (6.5 in), coupled with a high average humidity rate of 84%. Whether you’re enjoying a cozy indoor retreat or an adventurous outing, layer up for the variable weather!

March Temperature in Somerville

In March in Somerville, the average temperature is 13°C (55°F). Maximum temperatures can reach up to 30°C (86°F), while minimum temperatures can drop as low as -7°C (20°F). Travelers should be prepared for a wide range of weather conditions during this time.

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 13°C (55°F), with highs reaching up to 30°C (86°F) and lows dropping to around -7°C (20°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 precipitation amount is 165 mm (6.5 in) spread over 14 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 165 mm (6.5 inches) of precipitation spread over approximately 14 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

March Humidity in Somerville

In Somerville in March humidity is 84%. With average temperature 13°C (55°F), this humidity feels like a heavy blanket wrapping around you, making every step feel sluggish and draining for traveling.

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 84%, 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 is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to 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 8, which falls under the very high 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	6°C (42°F)	100 mm (4.0 inches)	86%	moderate
February Weather	8°C (46°F)	172 mm (6.8 inches)	85%	high
March Weather	13°C (55°F)	165 mm (6.5 inches)	84%	very high
April Weather	16°C (61°F)	135 mm (5.3 inches)	81%	very high
May Weather	22°C (72°F)	105 mm (4.1 inches)	83%	extreme
June Weather	26°C (78°F)	109 mm (4.3 inches)	83%	extreme
July Weather	27°C (81°F)	124 mm (4.9 inches)	80%	extreme
August Weather	26°C (79°F)	114 mm (4.5 inches)	73%	very high
September Weather	24°C (76°F)	114 mm (4.5 inches)	70%	very high
October Weather	18°C (65°F)	105 mm (4.1 inches)	73%	high
November Weather	10°C (51°F)	75 mm (2.9 inches)	85%	moderate
December Weather	8°C (47°F)	145 mm (5.7 inches)	88%	moderate