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March Weather in Hyannis, United States

Last updated: June 24, 2025

In Hyannis, United States, the average temperature in March hovers around 3°C (38°F). Expect a wide range, with minimum temperatures dipping to -25°C (-13°F) and maximums reaching up to 28°C (82°F). During this month, you can anticipate 63 mm (2.5 in) of precipitation over approximately 8 days, accompanied by an average humidity of 64%.

March Temperature in Hyannis

In March in Hyannis, the average temperature is 3°C (38°F). Maximum temperatures can reach 28°C (82°F), while minimums can drop as low as -25°C (-13°F). Travelers should be prepared for a wide range of temperatures, ensuring they pack appropriately for both warm and cold conditions.

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

The chart illustrates March temperature patterns in Hyannis, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hyannis, March typically has an average temperature of 3°C (38°F), with highs reaching up to 28°C (82°F) and lows dropping to around -25°C (-13°F).
JanFebMarAprMayJunJulAugSepOctNovDec272437445569747164463830
Data source: Temperature data for Hyannis 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 Hyannis

In Hyannis in March, the precipitation amount is 63 mm (2.5 in) spread over 8 days.

March Precipitation Trends in Hyannis

The chart displays monthly precipitation patterns in Hyannis, 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 Hyannis, March typically receives around 63 mm (2.5 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec1424634913656635846362221
Data source: Precipitation data for March generated using information from the Copernicus Climate Change Service.
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March Humidity in Hyannis

In Hyannis in March, humidity is 64%. With an average temperature of 3°C (38°F), this humidity feels like a damp chill that seeps into your bones, making outdoor exploration uncomfortable and prompting travelers to seek refuge indoors or bundle up in layers.

March Average Humidity in Hyannis

This chart illustrates the average monthly humidity levels in Hyannis, 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 Hyannis is approximately 64%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec73%80%64%64%76%79%77%79%70%64%75%78%
Data source: Humidity data for March generated using information from the Copernicus Climate Change Service.

March UV Index in Hyannis

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

Maximum UV Index Levels in Hyannis for March

The chart shows the monthly maximum UV Index (UVI) for Hyannis 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 Hyannis typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3568101111109643
Data source: Hyannis 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 Hyannis Compares to Other Months

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

This table compares monthly weather conditions in Hyannis, showing how March’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-3°C (27°F)14 mm (0.5 inches)73%moderate
February Weather-4°C (25°F)24 mm (0.9 inches)80%moderate
March Weather3°C (38°F)63 mm (2.5 inches)64%high
April Weather7°C (44°F)49 mm (1.9 inches)64%very high
May Weather13°C (55°F)136 mm (5.4 inches)76%very high
June Weather21°C (70°F)56 mm (2.2 inches)79%extreme
July Weather23°C (74°F)63 mm (2.5 inches)77%extreme
August Weather21°C (71°F)58 mm (2.3 inches)79%very high
September Weather18°C (65°F)46 mm (1.8 inches)70%very high
October Weather8°C (46°F)36 mm (1.4 inches)64%high
November Weather3°C (38°F)22 mm (0.9 inches)75%moderate
December Weather-1°C (30°F)21 mm (0.8 inches)78%moderate

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