March Weather in Somerville, United States

Last updated: June 24, 2025

In March, the average temperature in Somerville, United States hovers around 18°C (65°F). Expect a wide range with minimum temperatures dipping to -3°C (27°F) and maximums reaching up to 32°C (90°F). This month also brings about 69 mm (2.7 in) of precipitation over approximately 10 days, contributing to an average humidity of 78%. Prepare for a dynamic climate!

March Temperature in Somerville

In March in Somerville, the average temperature is 18°C (65°F), with maximums reaching up to 32°C (90°F) and minimums dropping as low as -3°C (27°F). This diverse temperature range makes it essential to pack for both warm and chilly conditions while traveling.

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 18°C (65°F), with highs reaching up to 32°C (90°F) and lows dropping to around -3°C (27°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 69 mm (2.7 in) spread over a period 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 69 mm (2.7 inches) of precipitation spread over approximately 10 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 78%. With an average temperature of 18°C (65°F), this humidity feels like a warm, enveloping blanket, making travel quite muggy and potentially uncomfortable, as it can leave you feeling sticky and fatigued more quickly than usual.

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 78%, 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 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, 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 9, 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	12°C (53°F)	70 mm (2.8 inches)	79%	moderate
February Weather	13°C (55°F)	81 mm (3.2 inches)	80%	very high
March Weather	18°C (65°F)	69 mm (2.7 inches)	78%	very high
April Weather	20°C (69°F)	111 mm (4.4 inches)	79%	extreme
May Weather	25°C (77°F)	166 mm (6.5 inches)	81%	extreme
June Weather	28°C (83°F)	118 mm (4.7 inches)	77%	extreme
July Weather	29°C (85°F)	96 mm (3.8 inches)	71%	extreme
August Weather	30°C (86°F)	120 mm (4.7 inches)	67%	extreme
September Weather	27°C (81°F)	125 mm (4.9 inches)	69%	extreme
October Weather	22°C (72°F)	95 mm (3.7 inches)	73%	very high
November Weather	16°C (61°F)	72 mm (2.8 inches)	82%	high
December Weather	13°C (56°F)	103 mm (4.0 inches)	87%	moderate