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October Weather in Hartford, United States

Last updated: June 24, 2025

In October, the average temperature in Hartford, United States hovers around 17°C (62°F), offering a pleasant climate for exploration. However, be prepared for a wide temperature range, with lows dropping to 0°C (33°F) and highs soaring to 36°C (98°F). Additionally, expect about 115 mm (4.5 in) of precipitation over approximately 10 days, contributing to the region's high average humidity of 78%.

October Temperature in Hartford

In October, in Hartford, the average temperature is 17°C (62°F). The maximum can reach 36°C (98°F), and the minimum can be as low as 0°C (33°F). This varied climate makes Hartford an exciting destination for travelers, as it offers a range of weather conditions to experience.

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 17°C (62°F), with highs reaching up to 36°C (98°F) and lows dropping to around 0°C (33°F).
JanFebMarAprMayJunJulAugSepOctNovDec374150586976807873624643
Data source: Temperature data for Hartford 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 Hartford

In Hartford in October, the precipitation amount is 115 mm (4.5 in) over a span of 10 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 115 mm (4.5 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec931501291491261251039210311593106
Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.
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October Humidity in Hartford

In Hartford in October, humidity is 78%. With an average temperature of 17°C (62°F), this humidity feels like a warm, enveloping blanket, making travel feel a bit sticky and heavy but also refreshing, as long as you're prepared with light clothing and plenty of water.

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.
JanFebMarAprMayJunJulAugSepOctNovDec87%86%86%82%83%83%80%74%71%78%88%88%
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 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, 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 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec36710101110109753
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.
 TemperaturePrecipitationHumidityUV
January Weather3°C (37°F)93 mm (3.7 inches)87%moderate
February Weather5°C (42°F)150 mm (5.9 inches)86%high
March Weather10°C (50°F)129 mm (5.1 inches)86%high
April Weather14°C (58°F)149 mm (5.9 inches)82%very high
May Weather21°C (70°F)126 mm (5.0 inches)82%very high
June Weather25°C (77°F)125 mm (4.9 inches)83%extreme
July Weather27°C (80°F)103 mm (4.1 inches)80%very high
August Weather25°C (78°F)92 mm (3.6 inches)74%very high
September Weather23°C (73°F)103 mm (4.1 inches)71%very high
October Weather17°C (62°F)115 mm (4.5 inches)78%high
November Weather8°C (47°F)93 mm (3.7 inches)88%moderate
December Weather6°C (43°F)106 mm (4.2 inches)88%moderate

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