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August Weather in Stonington, United States

Last updated: June 24, 2025

The average temperature in Stonington, United States during August is 23°C (74°F), with a comfortable humidity level of 82%. Expect temperatures to range from a cool 11°C (52°F) at night to a warm 33°C (92°F) during the day. However, be prepared for some rain, as the area sees about 91 mm (3.6 in) of precipitation over 10 days in the month.

August Temperature in Stonington

In August in Stonington, the average temperature is 23°C (74°F). Maximum temperatures can reach 33°C (92°F), while minimums can drop to as low as 11°C (52°F). This range makes Stonington an ideal destination for travelers seeking pleasant weather for outdoor activities.

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

The chart illustrates August 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, August typically has an average temperature of 23°C (74°F), with highs reaching up to 33°C (92°F) and lows dropping to around 11°C (52°F).
JanFebMarAprMayJunJulAugSepOctNovDec293244536675777471574236
Data source: Temperature data for Stonington 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.

August Precipitation in Stonington

In Stonington in August, the precipitation amount totals 91 mm (3.6 in) over a span of 10 days.

August Precipitation Trends in Stonington

The chart displays monthly precipitation patterns in Stonington, with values for each month alongside August’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how August’s conditions compare to those of other months. In Stonington, August typically receives around 91 mm (3.6 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec727413013014511111591611107251
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Stonington

In Stonington in August, humidity is 82%. With an average temperature of 23°C (74°F), this humidity feels like you are walking through a warm, damp blanket, making travel a bit uncomfortable and sticky as you navigate the air thick with moisture.

August Average Humidity in Stonington

This chart illustrates the average monthly humidity levels in Stonington, with August’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In August, average humidity in Stonington is approximately 82%, 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 August generated using information from the Copernicus Climate Change Service.

August UV Index in Stonington

In Stonington in August, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Stonington.

Maximum UV Index Levels in Stonington for August

The chart shows the monthly maximum UV Index (UVI) for Stonington in August, 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 August, the maximum UV index in Stonington typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356910111198643
Data source: Stonington August 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 August 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 August’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 August’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

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