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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 13°C (56°F). Temperatures can range from a chilly 2°C (36°F) to a warm 28°C (82°F), offering a variety of experiences. Expect about 146 mm (5.7 in) of precipitation over 16 days, accompanied by a high average humidity of 82%. Be prepared for a mix of cozy and humid weather!

October Temperature in Hartford

In October in Hartford, the average temperature is 13°C (56°F). The maximum can reach 28°C (82°F), while the minimum can drop as low as 2°C (36°F). Travelers should be prepared for a range of temperatures, making it advisable to pack both lighter clothes for the day and warmer layers for the evenings.

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 13°C (56°F), with highs reaching up to 28°C (82°F) and lows dropping to around 2°C (36°F).
JanFebMarAprMayJunJulAugSepOctNovDec282837465870757367554135
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 146 mm (5.7 in) spread over 16 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 146 mm (5.7 inches) of precipitation spread over approximately 16 days.
JanFebMarAprMayJunJulAugSepOctNovDec74737910215113310678751467267
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 82%. With an average temperature of 13°C (56°F), this humidity feels like a damp blanket wrapping around you, making it feel much cooler than it is and creating a heavy atmosphere that can be exhausting for travelers.

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 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%87%86%87%82%81%78%79%80%82%87%86%
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.
JanFebMarAprMayJunJulAugSepOctNovDec24589101097532
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 Weather-2°C (28°F)74 mm (2.9 inches)87%low
February Weather-2°C (29°F)73 mm (2.9 inches)87%moderate
March Weather3°C (37°F)79 mm (3.1 inches)86%moderate
April Weather8°C (46°F)102 mm (4.0 inches)87%very high
May Weather14°C (58°F)151 mm (5.9 inches)82%very high
June Weather21°C (70°F)133 mm (5.3 inches)81%very high
July Weather24°C (75°F)106 mm (4.2 inches)78%very high
August Weather23°C (73°F)78 mm (3.1 inches)79%very high
September Weather20°C (67°F)75 mm (3.0 inches)79%high
October Weather13°C (56°F)146 mm (5.7 inches)82%moderate
November Weather5°C (42°F)72 mm (2.8 inches)87%moderate
December Weather2°C (35°F)67 mm (2.6 inches)86%low

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