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March Weather in New Canaan, United States

Last updated: June 24, 2025

In March, the average temperature in New Canaan, United States hovers around 4°C (40°F). However, be prepared for a range of temperatures, with a minimum dipping to -12°C (11°F) and a maximum soaring to 25°C (77°F). With an average precipitation of 92 mm (3.6 in) over 10 days, it's wise to bring an umbrella. Additionally, the climate can feel quite humid with an average humidity level of 81%.

March Temperature in New Canaan

In March in New Canaan, the average temperature is 4°C (40°F). Maximum temperatures can reach 25°C (77°F), while the minimum can drop as low as -12°C (11°F). Be prepared for a wide range of weather conditions when traveling to New Canaan this time of year.

March Weather in New Canaan: Daily Temperature Highs, Lows, and Averages

The chart illustrates March temperature patterns in New Canaan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In New Canaan, March typically has an average temperature of 4°C (40°F), with highs reaching up to 25°C (77°F) and lows dropping to around -12°C (11°F).
JanFebMarAprMayJunJulAugSepOctNovDec323440506070767468584536
Data source: Temperature data for New Canaan 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 New Canaan

In New Canaan in March, the total precipitation amount is 92 mm (3.6 in), which falls over the course of 10 days.

March Precipitation Trends in New Canaan

The chart displays monthly precipitation patterns in New Canaan, 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 New Canaan, March typically receives around 92 mm (3.6 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec69102921201129412911010614092114
Data source: Precipitation data for March generated using information from the Copernicus Climate Change Service.
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March Humidity in New Canaan

In New Canaan in March humidity is 81%. With an average temperature of 4°C (40°F), this humidity feels like a damp chill that can make traveling quite uncomfortable, as the cold air clings uncomfortably to your skin and the moisture can quickly sap your body heat.

March Average Humidity in New Canaan

This chart illustrates the average monthly humidity levels in New Canaan, 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 New Canaan is approximately 81%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%82%81%78%70%69%62%65%68%74%82%80%
Data source: Humidity data for March generated using information from the Copernicus Climate Change Service.

March UV Index in New Canaan

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

Maximum UV Index Levels in New Canaan for March

The chart shows the monthly maximum UV Index (UVI) for New Canaan 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 New Canaan typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec35681010998642
Data source: New Canaan 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 New Canaan Compares to Other Months

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

This table compares monthly weather conditions in New Canaan, showing how March’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather0°C (32°F)69 mm (2.7 inches)84%moderate
February Weather1°C (35°F)102 mm (4.0 inches)82%moderate
March Weather4°C (40°F)92 mm (3.6 inches)81%high
April Weather10°C (50°F)120 mm (4.7 inches)78%very high
May Weather15°C (60°F)112 mm (4.4 inches)69%very high
June Weather21°C (70°F)94 mm (3.7 inches)69%very high
July Weather24°C (76°F)129 mm (5.1 inches)62%very high
August Weather23°C (75°F)110 mm (4.3 inches)65%very high
September Weather20°C (68°F)106 mm (4.2 inches)68%very high
October Weather14°C (58°F)139 mm (5.5 inches)74%high
November Weather7°C (45°F)92 mm (3.6 inches)82%moderate
December Weather2°C (37°F)114 mm (4.5 inches)80%low

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