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October Weather in New Haven, United States

Last updated: June 24, 2025

In October, the average temperature in New Haven, United States hovers around 15°C (60°F), with a minimum of 4°C (39°F) and a peak of 28°C (83°F). Expect 171 mm (6.7 in) of precipitation over approximately 14 days, contributing to a relative humidity of 74%. Perfect for a cozy getaway or exploring the local sights!

October Temperature in New Haven

In October in New Haven, the average temperature is 15°C (60°F). Maximums can reach 28°C (83°F), and minimums can be as low as 4°C (39°F). This pleasant climate makes New Haven an ideal destination for travelers seeking a comfortable getaway.

October Weather in New Haven: Daily Temperature Highs, Lows, and Averages

The chart illustrates October temperature patterns in New Haven, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In New Haven, October typically has an average temperature of 15°C (60°F), with highs reaching up to 28°C (83°F) and lows dropping to around 4°C (39°F).
JanFebMarAprMayJunJulAugSepOctNovDec333539475766747468604738
Data source: Temperature data for New Haven 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 New Haven

In New Haven in October, the precipitation amount is 171 mm (6.7 in) over the course of 14 days.

October Precipitation Trends in New Haven

The chart displays monthly precipitation patterns in New Haven, 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 New Haven, October typically receives around 171 mm (6.7 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec901321091531309313297108171112160
Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.
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October Humidity in New Haven

In New Haven in October humidity is 74%. With an average temperature of 15°C (60°F), this humidity feels like a warm embrace that can make outdoor activities feel slightly stifling, so travelers should be prepared to hydrate frequently and take breaks in the shade.

October Average Humidity in New Haven

This chart illustrates the average monthly humidity levels in New Haven, 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 New Haven is approximately 74%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%82%81%78%70%69%62%65%68%74%82%80%
Data source: Humidity data for October generated using information from the Copernicus Climate Change Service.

October UV Index in New Haven

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

Maximum UV Index Levels in New Haven for October

The chart shows the monthly maximum UV Index (UVI) for New Haven 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 New Haven typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec35681010998642
Data source: New Haven 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 New Haven Compares to Other Months

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

This table compares monthly weather conditions in New Haven, showing how October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather1°C (34°F)90 mm (3.5 inches)84%moderate
February Weather1°C (35°F)132 mm (5.2 inches)82%moderate
March Weather4°C (39°F)109 mm (4.3 inches)81%high
April Weather8°C (47°F)153 mm (6.0 inches)78%very high
May Weather14°C (57°F)130 mm (5.1 inches)69%very high
June Weather19°C (67°F)93 mm (3.7 inches)69%very high
July Weather23°C (74°F)132 mm (5.2 inches)62%very high
August Weather23°C (74°F)96 mm (3.8 inches)65%very high
September Weather20°C (69°F)108 mm (4.3 inches)68%very high
October Weather15°C (60°F)171 mm (6.7 inches)74%high
November Weather8°C (47°F)112 mm (4.4 inches)82%moderate
December Weather4°C (39°F)160 mm (6.3 inches)80%low

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