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March Weather in South Dennis, United States

Last updated: June 24, 2025

In March, the average temperature in South Dennis, United States hovers around 3°C (38°F), with a minimum of -9°C (16°F) and a maximum reaching 13°C (56°F). Expect about 118 mm (4.7 in) of precipitation spread over 10 days, leading to an average humidity of 82%.

March Temperature in South Dennis

In March in South Dennis, the average temperature is 3°C (38°F), with maximums reaching 13°C (56°F) and minimums dipping as low as -9°C (16°F). Be prepared for chilly weather and pack warm clothing when traveling to South Dennis during this time.

March Weather in South Dennis: Daily Temperature Highs, Lows, and Averages

The chart illustrates March temperature patterns in South Dennis, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In South Dennis, March typically has an average temperature of 3°C (38°F), with highs reaching up to 13°C (56°F) and lows dropping to around -9°C (16°F).
JanFebMarAprMayJunJulAugSepOctNovDec353638455363707266594839
Data source: Temperature data for South Dennis 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 South Dennis

In South Dennis in March, the precipitation amount is 118 mm (4.7 in) over a span of 10 days.

March Precipitation Trends in South Dennis

The chart displays monthly precipitation patterns in South Dennis, 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 South Dennis, March typically receives around 118 mm (4.7 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec94123118137119918382118175102136
Data source: Precipitation data for March generated using information from the Copernicus Climate Change Service.
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March Humidity in South Dennis

In South Dennis in March humidity is 82%. With an average temperature of 3°C (38°F), this humidity feels like a chilly blanket wrapped around you, making outdoor adventures quite uncomfortable and requiring extra layers to stay warm while exploring.

March Average Humidity in South Dennis

This chart illustrates the average monthly humidity levels in South Dennis, 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 South Dennis is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%84%82%79%75%78%76%76%76%75%80%80%
Data source: Humidity data for March generated using information from the Copernicus Climate Change Service.

March UV Index in South Dennis

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

Maximum UV Index Levels in South Dennis for March

The chart shows the monthly maximum UV Index (UVI) for South Dennis 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 South Dennis typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3468910998642
Data source: South Dennis 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 South Dennis Compares to Other Months

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

This table compares monthly weather conditions in South Dennis, showing how March’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather2°C (36°F)94 mm (3.7 inches)84%moderate
February Weather2°C (36°F)123 mm (4.8 inches)84%moderate
March Weather3°C (38°F)118 mm (4.7 inches)82%high
April Weather7°C (46°F)137 mm (5.4 inches)79%very high
May Weather12°C (53°F)119 mm (4.7 inches)75%very high
June Weather17°C (63°F)91 mm (3.6 inches)78%very high
July Weather21°C (71°F)83 mm (3.3 inches)76%very high
August Weather22°C (72°F)82 mm (3.2 inches)76%very high
September Weather19°C (67°F)118 mm (4.7 inches)75%very high
October Weather15°C (59°F)175 mm (6.9 inches)75%high
November Weather9°C (48°F)102 mm (4.0 inches)80%moderate
December Weather4°C (40°F)136 mm (5.4 inches)80%low

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