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October Weather in Stonington, United States

Last updated: June 24, 2025

In October, the average temperature in Stonington, United States hovers around 14°C (58°F). However, prepare for a range of temperatures, with minima dipping to -4°C (24°F) and maxima soaring up to 33°C (91°F). Additionally, expect about 109 mm (4.3 in) of precipitation spread across 10 days, while humidity levels average around 79%.

October Temperature in Stonington

In October in Stonington, the average temperature is 14°C (58°F), with maximums reaching 33°C (91°F) and minimums dropping as low as -4°C (24°F). Travelers should be prepared for a wide temperature range, making it essential to pack layers for both warm and cool conditions.

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

The chart illustrates October 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, October typically has an average temperature of 14°C (58°F), with highs reaching up to 33°C (91°F) and lows dropping to around -4°C (24°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.

October Precipitation in Stonington

In Stonington in October, the precipitation amount is 109 mm (4.3 in) spread over 10 days.

October Precipitation Trends in Stonington

The chart displays monthly precipitation patterns in Stonington, with values for each month alongside October’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how October’s conditions compare to those of other months. In Stonington, October typically receives around 109 mm (4.3 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec727413013014511111591611107251
Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.
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October Humidity in Stonington

In Stonington in October, humidity is 79%. With an average temperature of 14°C (58°F), this humidity feels like an oppressive blanket wrapped around you, making even the mild temperatures feel heavier and more stifling for traveling.

October Average Humidity in Stonington

This chart illustrates the average monthly humidity levels in Stonington, with October’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In October, average humidity in Stonington is approximately 79%, 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 October generated using information from the Copernicus Climate Change Service.

October UV Index in Stonington

In Stonington in October, 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 October

The chart shows the monthly maximum UV Index (UVI) for Stonington in October, 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 October, the maximum UV index in Stonington typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356910111198643
Data source: Stonington October 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 October 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 October’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 October’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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