nomadseason

March Weather in Stonington, United States

Last updated: June 24, 2025

In March, the average temperature in Stonington, United States hovers around 6°C (44°F), with extremes ranging from a frigid -18°C (1°F) to a warm 26°C (78°F). Visitors can expect 130 mm (5.1 in) of precipitation spread over 12 days, contributing to the area's notably high average humidity of 84%.

March Temperature in Stonington

In March in Stonington, the average temperature is 6°C (44°F). Maximum temperatures can reach 26°C (78°F), while minimums can drop as low as -18°C (1°F). Travelers should be prepared for a wide range of weather conditions during this month.

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

The chart illustrates March temperature patterns in Stonington, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Stonington, March typically has an average temperature of 6°C (44°F), with highs reaching up to 26°C (78°F) and lows dropping to around -18°C (1°F).
JanFebMarAprMayJunJulAugSepOctNovDec293244536675777471574236
Data source: Temperature data for Stonington generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

March Precipitation in Stonington

In Stonington in March, the precipitation amount is 130 mm (5.1 in) over a span of 12 days.

March Precipitation Trends in Stonington

The chart displays monthly precipitation patterns in Stonington, 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 Stonington, March typically receives around 130 mm (5.1 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec727413013014511111591611107251
Data source: Precipitation data for March generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

March Humidity in Stonington

In Stonington in March humidity is 84%. With an average temperature of 6°C (44°F), this humidity feels like a chilly dampness that clings to your skin, making outdoor activities less comfortable and necessitating layered clothing to stay warm and dry while exploring the area.

March Average Humidity in Stonington

This chart illustrates the average monthly humidity levels in Stonington, 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 Stonington is approximately 84%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%82%84%83%80%83%82%83%79%79%88%87%
Data source: Humidity data for March generated using information from the Copernicus Climate Change Service.

March UV Index in Stonington

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

Maximum UV Index Levels in Stonington for March

The chart shows the monthly maximum UV Index (UVI) for Stonington 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 Stonington typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356910111198643
Data source: Stonington 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 Stonington Compares to Other Months

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

This table compares monthly weather conditions in Stonington, showing how March’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (30°F)72 mm (2.8 inches)84%moderate
February Weather0°C (32°F)74 mm (2.9 inches)82%moderate
March Weather6°C (44°F)130 mm (5.1 inches)84%high
April Weather11°C (53°F)130 mm (5.1 inches)83%very high
May Weather19°C (66°F)145 mm (5.7 inches)80%very high
June Weather24°C (75°F)111 mm (4.4 inches)83%extreme
July Weather25°C (78°F)115 mm (4.5 inches)82%extreme
August Weather23°C (74°F)91 mm (3.6 inches)82%very high
September Weather22°C (71°F)61 mm (2.4 inches)79%very high
October Weather14°C (58°F)109 mm (4.3 inches)79%high
November Weather5°C (42°F)72 mm (2.8 inches)88%moderate
December Weather2°C (37°F)51 mm (2.0 inches)87%moderate

Compare Stonington's Climate with Cities Worldwide