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 that can dip to 0°C (33°F) and a maximum soaring up to 35°C (95°F). Expect 108 mm (4.3 in) of precipitation spread over 11 days, contributing to an average humidity of 81%. Be prepared for a mix of lovely mild days and occasional rain!

October Temperature in New Haven

In October in New Haven, the average temperature is 15°C (60°F). Maximums can reach 35°C (95°F), and minimums can be as low as 0°C (33°F). Be sure to pack accordingly for a range of temperatures to fully enjoy your trip.

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 35°C (95°F) and lows dropping to around 0°C (33°F).

Data source: Temperature data for New Haven generated using information from the Copernicus Climate Change Service.

October Precipitation in New Haven

In New Haven in October, the precipitation amount is 108 mm (4.3 in) over the course of 11 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 108 mm (4.3 inches) of precipitation spread over approximately 11 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 New Haven

In New Haven in October, humidity is 81%. With an average temperature of 15°C (60°F), this humidity feels like a heavy blanket wrapping around you, making outdoor activities feel sluggish and draining, which can challenge even the best-prepared traveler.

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.

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.

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.
	Temperature	Precipitation	Humidity	UV
January Weather	2°C (35°F)	91 mm (3.6 inches)	88%	moderate
February Weather	4°C (39°F)	131 mm (5.1 inches)	88%	moderate
March Weather	8°C (46°F)	109 mm (4.3 inches)	88%	high
April Weather	13°C (55°F)	138 mm (5.4 inches)	86%	very high
May Weather	19°C (66°F)	141 mm (5.5 inches)	82%	very high
June Weather	23°C (73°F)	152 mm (6.0 inches)	84%	very high
July Weather	25°C (78°F)	111 mm (4.4 inches)	82%	very high
August Weather	24°C (75°F)	123 mm (4.8 inches)	73%	very high
September Weather	21°C (71°F)	106 mm (4.2 inches)	73%	very high
October Weather	15°C (60°F)	108 mm (4.3 inches)	81%	high
November Weather	7°C (45°F)	80 mm (3.2 inches)	89%	moderate
December Weather	4°C (40°F)	119 mm (4.7 inches)	86%	moderate