October Weather in Hartford, United States

Last updated: June 24, 2025

In October, the average temperature in Hartford, United States hovers around 10°C (50°F). Expect a variety of weather conditions, with minimums dropping to -5°C (24°F) and maximums peaking at 25°C (78°F). With approximately 130 mm (5.1 in) of precipitation spread across 13 days, it's wise to prepare for rainy spells. Additionally, the average humidity level sits comfortably at 78%, making for a rather humid atmosphere.

October Temperature in Hartford

In October in Hartford, the average temperature is 10°C (50°F), with maximums reaching up to 25°C (78°F) and minimums dropping as low as -5°C (24°F). This variability in temperature makes Hartford an intriguing destination for travelers who enjoy diverse weather conditions.

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 10°C (50°F), with highs reaching up to 25°C (78°F) and lows dropping to around -5°C (24°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 130 mm (5.1 in) spread over 13 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 130 mm (5.1 inches) of precipitation spread over approximately 13 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

October Humidity in Hartford

In Hartford in October humidity is 78%. With an average temperature of 10°C (50°F), this humidity feels like a chilly dampness that can seep into your clothes, making outdoor activities less enjoyable and requiring extra layers to stay warm as you explore the area.

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 78%, 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 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 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 5, which falls under the moderate 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	-6°C (21°F)	70 mm (2.8 inches)	86%	moderate
February Weather	-5°C (24°F)	79 mm (3.1 inches)	84%	moderate
March Weather	-1°C (31°F)	67 mm (2.6 inches)	82%	high
April Weather	6°C (43°F)	113 mm (4.4 inches)	80%	very high
May Weather	13°C (56°F)	80 mm (3.2 inches)	72%	very high
June Weather	18°C (65°F)	88 mm (3.5 inches)	72%	very high
July Weather	21°C (70°F)	125 mm (4.9 inches)	67%	very high
August Weather	20°C (68°F)	84 mm (3.3 inches)	66%	very high
September Weather	16°C (61°F)	61 mm (2.4 inches)	71%	high
October Weather	10°C (50°F)	130 mm (5.1 inches)	78%	moderate
November Weather	1°C (35°F)	99 mm (3.9 inches)	84%	moderate
December Weather	-4°C (25°F)	96 mm (3.8 inches)	81%	low