nomadseason

October Weather in New Haven, United States

Last updated: June 24, 2025

The average temperature in New Haven, United States during October hovers around 14°C (57°F). However, be prepared for a wide range of temperatures, with minimums reaching -2°C (29°F) and maximums soaring to 33°C (91°F). During this month, New Haven also experiences precipitation of approximately 101 mm (4.0 in) over 12 days. Coupled with an average humidity of 81%, it's essential to pack accordingly for both warmth and moisture!

October Temperature in New Haven

In October in New Haven, the average temperature is 14°C (57°F), with maximums reaching 33°C (91°F) and minimums plummeting to as low as -2°C (29°F). It's advisable to pack layers to accommodate the wide temperature range while enjoying your travels.

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 14°C (57°F), with highs reaching up to 33°C (91°F) and lows dropping to around -2°C (29°F).
JanFebMarAprMayJunJulAugSepOctNovDec283140506272767368564135
Data source: Temperature data for New Haven generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
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 101 mm (4.0 in) spread over 12 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 101 mm (4.0 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec74801029212712110497651018261
Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

October Humidity in New Haven

In New Haven in October, humidity is 81%. With an average temperature of 14°C (57°F), this humidity feels like a warm, dense blanket that clings to your skin, making outdoor exploration a bit heavier and more tiring.

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 81%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%85%86%87%81%82%81%79%78%81%89%86%
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.
JanFebMarAprMayJunJulAugSepOctNovDec35699101098642
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 Weather-2°C (29°F)74 mm (2.9 inches)85%moderate
February Weather-1°C (31°F)80 mm (3.2 inches)85%moderate
March Weather5°C (41°F)102 mm (4.0 inches)86%high
April Weather10°C (50°F)92 mm (3.6 inches)87%very high
May Weather17°C (63°F)127 mm (5.0 inches)81%very high
June Weather22°C (72°F)121 mm (4.8 inches)82%very high
July Weather24°C (76°F)104 mm (4.1 inches)81%very high
August Weather23°C (74°F)96 mm (3.8 inches)79%very high
September Weather20°C (68°F)65 mm (2.5 inches)78%very high
October Weather14°C (57°F)101 mm (4.0 inches)81%high
November Weather5°C (41°F)82 mm (3.2 inches)89%moderate
December Weather1°C (35°F)61 mm (2.4 inches)86%low

Compare New Haven's Climate with Cities Worldwide