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March Weather in Dorchester, United States

Last updated: June 24, 2025

In March, the average temperature in Dorchester, United States hovers around 6°C (42°F). Expect a wide range, with minimum temperatures plummeting to -20°C (-4°F) and peaks reaching up to 28°C (83°F). Rainfall is not uncommon, totaling 95 mm (3.7 in) over approximately 9 days. The air can feel quite humid, with an average humidity of 73%.

March Temperature in Dorchester

In March in Dorchester, the average temperature is 6°C (42°F). Maximum temperatures can reach 28°C (83°F), while the minimum can drop as low as -20°C (-4°F). Be prepared for a wide range of temperatures to ensure a comfortable and enjoyable travel experience.

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

The chart illustrates March temperature patterns in Dorchester, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Dorchester, March typically has an average temperature of 6°C (42°F), with highs reaching up to 28°C (83°F) and lows dropping to around -20°C (-4°F).
JanFebMarAprMayJunJulAugSepOctNovDec272742516377797570534133
Data source: Temperature data for Dorchester generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

March Precipitation in Dorchester

In Dorchester in March, the precipitation amount is 95 mm (3.7 in) over the course of 9 days.

March Precipitation Trends in Dorchester

The chart displays monthly precipitation patterns in Dorchester, 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 Dorchester, March typically receives around 95 mm (3.7 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec32269547145976582811102740
Data source: Precipitation data for March generated using information from the Copernicus Climate Change Service.
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March Humidity in Dorchester

In Dorchester in March, humidity is 73%. With an average temperature of 6°C (42°F), this humidity feels like a chilly, damp blanket wrapping around you, making travel slightly uncomfortable and often calling for extra layers to stay warm and dry while exploring the area.

March Average Humidity in Dorchester

This chart illustrates the average monthly humidity levels in Dorchester, 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 Dorchester is approximately 73%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec76%80%73%75%78%82%83%81%75%75%82%83%
Data source: Humidity data for March generated using information from the Copernicus Climate Change Service.

March UV Index in Dorchester

In Dorchester 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 Dorchester, you can refer to this Hourly UV Index in Dorchester.

Maximum UV Index Levels in Dorchester for March

The chart shows the monthly maximum UV Index (UVI) for Dorchester 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 Dorchester typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356910111098643
Data source: Dorchester 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 Dorchester Compares to Other Months

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

This table compares monthly weather conditions in Dorchester, showing how March’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-3°C (27°F)32 mm (1.3 inches)76%moderate
February Weather-3°C (27°F)26 mm (1.0 inches)80%moderate
March Weather6°C (42°F)95 mm (3.7 inches)73%high
April Weather11°C (51°F)47 mm (1.8 inches)74%very high
May Weather17°C (63°F)145 mm (5.7 inches)78%very high
June Weather25°C (77°F)97 mm (3.8 inches)82%extreme
July Weather26°C (79°F)64 mm (2.5 inches)83%very high
August Weather24°C (76°F)82 mm (3.2 inches)80%very high
September Weather21°C (70°F)81 mm (3.2 inches)75%very high
October Weather12°C (53°F)110 mm (4.3 inches)75%high
November Weather5°C (41°F)27 mm (1.1 inches)82%moderate
December Weather0°C (33°F)40 mm (1.6 inches)83%moderate

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