October Weather in Hartford, United States

Last updated: June 24, 2025

In October, the average temperature in Hartford, United States hovers around 12°C (53°F). Expect a range of conditions, with minimums dipping to -5°C (23°F) and maximums soaring to 31°C (89°F). During this time, 131 mm (5.2 in) of precipitation is likely to fall over 11 days, contributing to an average humidity of 75%.

October Temperature in Hartford

In October in Hartford, the average temperature is 12°C (53°F). Maximum temperatures can reach 31°C (89°F), while minimums can dip as low as -5°C (23°F). Pack both light and warm clothing to enjoy your trip comfortably, as the weather can vary significantly.

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

The chart illustrates October temperature patterns in Hartford, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hartford, October typically has an average temperature of 12°C (53°F), with highs reaching up to 31°C (89°F) and lows dropping to around -5°C (23°F).

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

October Precipitation in Hartford

In Hartford in October, the precipitation amount is 131 mm (5.2 in) distributed over 11 days.

October Precipitation Trends in Hartford

The chart displays monthly precipitation patterns in Hartford, 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 Hartford, October typically receives around 131 mm (5.2 inches) of precipitation spread over approximately 11 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 Hartford

In Hartford in October, humidity is 75%. With an average temperature of 12°C (53°F), this humidity feels like a damp chill that clings to your skin, making leisurely exploration feel sluggish and heavy, perhaps leaving you yearning for cozy indoor retreats.

October Average Humidity in Hartford

This chart illustrates the average monthly humidity levels in Hartford, 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 Hartford is approximately 75%, 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 Hartford

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

Maximum UV Index Levels in Hartford for October

The chart shows the monthly maximum UV Index (UVI) for Hartford 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 Hartford typically reaches 6, which falls under the high exposure category.

Data source: Hartford 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 Hartford Compares to Other Months

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

This table compares monthly weather conditions in Hartford, showing how October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-5°C (23°F)	40 mm (1.6 inches)	78%	moderate
February Weather	-4°C (24°F)	41 mm (1.6 inches)	80%	moderate
March Weather	4°C (40°F)	83 mm (3.3 inches)	77%	high
April Weather	10°C (50°F)	73 mm (2.9 inches)	77%	very high
May Weather	17°C (63°F)	166 mm (6.5 inches)	77%	very high
June Weather	24°C (75°F)	125 mm (4.9 inches)	81%	extreme
July Weather	25°C (78°F)	69 mm (2.7 inches)	81%	very high
August Weather	24°C (75°F)	76 mm (3.0 inches)	77%	very high
September Weather	20°C (69°F)	118 mm (4.6 inches)	73%	very high
October Weather	12°C (53°F)	131 mm (5.2 inches)	75%	high
November Weather	4°C (39°F)	42 mm (1.6 inches)	85%	moderate
December Weather	0°C (31°F)	37 mm (1.4 inches)	83%	moderate