October Weather in Stonington, United States

Last updated: June 24, 2025

In Stonington, United States, the average temperature in October hovers around 12°C (54°F), with a minimum dropping to 2°C (35°F) and a maximum reaching 18°C (65°F). Expect a wetter outlook, with 145 mm (5.7 in) of precipitation spread over 12 days, and an average humidity of 82% that adds a touch of stickiness to the air.

October Temperature in Stonington

In October in Stonington, the average temperature is 12°C (54°F). Maximums can reach 18°C (65°F), while minimums can drop as low as 2°C (35°F). Make sure to pack layers to stay comfortable during your travels!

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 12°C (54°F), with highs reaching up to 18°C (65°F) and lows dropping to around 2°C (35°F).

Data source: Temperature data for Stonington generated using information from the Copernicus Climate Change Service.

October Precipitation in Stonington

In Stonington in October, the precipitation amount is 145 mm (5.7 in) over the course of 12 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 145 mm (5.7 inches) of precipitation spread over approximately 12 days.

Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

October Humidity in Stonington

In Stonington in October humidity is 82%. With an average temperature of 12°C (54°F), this humidity feels like a heavy blanket wrapping around you, making every step feel sluggish and sweat-inducing, which can be quite uncomfortable 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 82%, offering insight into how humid the weather typically is during this month.

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 reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the 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 5, which falls under the moderate exposure category.

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.
	Temperature	Precipitation	Humidity	UV
January Weather	-2°C (29°F)	108 mm (4.3 inches)	88%	low
February Weather	-1°C (30°F)	105 mm (4.1 inches)	88%	moderate
March Weather	0°C (33°F)	84 mm (3.3 inches)	85%	moderate
April Weather	5°C (41°F)	157 mm (6.2 inches)	81%	high
May Weather	9°C (49°F)	105 mm (4.1 inches)	76%	very high
June Weather	13°C (56°F)	87 mm (3.4 inches)	74%	very high
July Weather	16°C (62°F)	92 mm (3.6 inches)	74%	very high
August Weather	18°C (64°F)	86 mm (3.4 inches)	74%	very high
September Weather	16°C (60°F)	102 mm (4.0 inches)	77%	high
October Weather	12°C (54°F)	145 mm (5.7 inches)	82%	moderate
November Weather	6°C (43°F)	138 mm (5.4 inches)	85%	moderate
December Weather	1°C (34°F)	155 mm (6.1 inches)	84%	low