nomadseason

March Weather in Somerville, United States

Last updated: June 24, 2025

In March, the average temperature in Somerville, United States hovers around 13°C (56°F). Temperature extremes can vary significantly, dipping as low as -4°C (24°F) and soaring to 29°C (84°F). Expect a precipitation total of 190 mm (7.5 in) spread over 14 days, coupled with a noticeable average humidity level of 85%.

March Temperature in Somerville

In March in Somerville, the average temperature is 13°C (56°F), with maximums reaching 29°C (84°F) and minimums dipping as low as -4°C (24°F). Travelers should be prepared for a wide range of temperatures during their visit.

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 (56°F), with highs reaching up to 29°C (84°F) and lows dropping to around -4°C (24°F).
JanFebMarAprMayJunJulAugSepOctNovDec444956627177807975665148
Data source: Temperature data for Somerville generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

March Precipitation in Somerville

In Somerville in March, the precipitation amount is 190 mm (7.5 in) over the course of 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 190 mm (7.5 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec11418019014810313811411411513075157
Data source: Precipitation data for March generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

March Humidity in Somerville

In Somerville in March humidity is 85%. With an average temperature of 13°C (56°F), this humidity feels like a damp chill that wraps around you, making outdoor activities feel heavier and less enjoyable, as layers of clothing cling to the skin and breath becomes visible in the moist air.

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 85%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%87%85%82%83%82%78%67%64%75%87%89%
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.
JanFebMarAprMayJunJulAugSepOctNovDec46810101111109764
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.
 TemperaturePrecipitationHumidityUV
January Weather7°C (44°F)114 mm (4.5 inches)87%moderate
February Weather10°C (50°F)180 mm (7.1 inches)87%high
March Weather13°C (56°F)190 mm (7.5 inches)85%very high
April Weather16°C (62°F)148 mm (5.8 inches)82%very high
May Weather22°C (72°F)103 mm (4.0 inches)83%very high
June Weather25°C (77°F)138 mm (5.4 inches)82%extreme
July Weather27°C (81°F)114 mm (4.5 inches)78%extreme
August Weather26°C (80°F)114 mm (4.5 inches)67%very high
September Weather24°C (76°F)115 mm (4.5 inches)64%very high
October Weather19°C (66°F)130 mm (5.1 inches)74%high
November Weather11°C (51°F)75 mm (2.9 inches)87%high
December Weather9°C (48°F)157 mm (6.2 inches)88%moderate

Compare Somerville's Climate with Cities Worldwide