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March Weather in Cohasset, United States

Last updated: June 24, 2025

In Cohasset, United States, the average temperature for March hovers around -3°C (27°F). Be prepared for a wide range, as temperatures can plunge to a chilling -28°C (-18°F) or rise to a pleasant 17°C (63°F). During this period, expect about 34 mm (1.3 in) of precipitation over 5 days and an average humidity of a damp 88%. Stay warm and dry!

March Temperature in Cohasset

In March in Cohasset, the average temperature is -3°C (27°F), with maximums reaching up to 17°C (63°F) and minimums plummeting as low as -28°C (-18°F). Travelers should be prepared for a wide range of temperatures while visiting, so layering clothing is essential.

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

The chart illustrates March temperature patterns in Cohasset, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Cohasset, March typically has an average temperature of -3°C (27°F), with highs reaching up to 17°C (63°F) and lows dropping to around -28°C (-18°F).
JanFebMarAprMayJunJulAugSepOctNovDec101027375365706659442817
Data source: Temperature data for Cohasset 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 Cohasset

In Cohasset in March, the precipitation amount is 34 mm (1.3 in) over the course of 5 days.

March Precipitation Trends in Cohasset

The chart displays monthly precipitation patterns in Cohasset, 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 Cohasset, March typically receives around 34 mm (1.3 inches) of precipitation spread over approximately 5 days.
JanFebMarAprMayJunJulAugSepOctNovDec222634616085107861051033352
Data source: Precipitation data for March generated using information from the Copernicus Climate Change Service.
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March Humidity in Cohasset

In Cohasset in March humidity is 88%. With an average temperature of -3°C (27°F), this humidity feels like a biting chill that seeps into your bones, making outdoor exploration less inviting as the dampness clings to your clothing and slows your movements.

March Average Humidity in Cohasset

This chart illustrates the average monthly humidity levels in Cohasset, 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 Cohasset is approximately 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec92%93%88%83%76%76%76%77%77%82%88%89%
Data source: Humidity data for March generated using information from the Copernicus Climate Change Service.

March UV Index in Cohasset

In Cohasset 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 Cohasset.

Maximum UV Index Levels in Cohasset for March

The chart shows the monthly maximum UV Index (UVI) for Cohasset 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 Cohasset typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235789987532
Data source: Cohasset 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 Cohasset Compares to Other Months

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

This table compares monthly weather conditions in Cohasset, showing how March’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-12°C (11°F)22 mm (0.8 inches)92%low
February Weather-12°C (11°F)26 mm (1.0 inches)93%moderate
March Weather-3°C (27°F)34 mm (1.3 inches)88%moderate
April Weather3°C (38°F)61 mm (2.4 inches)83%high
May Weather12°C (53°F)60 mm (2.4 inches)76%very high
June Weather18°C (65°F)85 mm (3.4 inches)76%very high
July Weather21°C (70°F)107 mm (4.2 inches)76%very high
August Weather19°C (67°F)86 mm (3.4 inches)77%very high
September Weather15°C (59°F)105 mm (4.1 inches)77%high
October Weather7°C (44°F)103 mm (4.1 inches)82%moderate
November Weather-2°C (28°F)33 mm (1.3 inches)87%moderate
December Weather-8°C (18°F)52 mm (2.0 inches)89%low

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