October Weather in Brookhaven, United States

Last updated: June 24, 2025

In October, the average temperature in Brookhaven, United States hovers around 21°C (70°F), making it a pleasant time to visit. However, be prepared for a range, as temperatures can dip to a chilly 1°C (35°F) or soar up to a sweltering 37°C (98°F). Don't forget your umbrella; with an average precipitation of 104 mm (4.1 in) over 9 days, you might encounter some rain. Plus, the air can feel quite humid, with an average humidity level of 77%.

October Temperature in Brookhaven

In October in Brookhaven, the average temperature is 21°C (70°F). Maximums can reach 37°C (98°F), and minimums can be as low as 1°C (35°F). Travelers should be prepared for a wide range of temperatures and pack accordingly.

October Weather in Brookhaven: Daily Temperature Highs, Lows, and Averages

The chart illustrates October temperature patterns in Brookhaven, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Brookhaven, October typically has an average temperature of 21°C (70°F), with highs reaching up to 37°C (98°F) and lows dropping to around 1°C (35°F).

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

October Precipitation in Brookhaven

In Brookhaven in October, the precipitation amount is 104 mm (4.1 in) over the course of 9 days.

October Precipitation Trends in Brookhaven

The chart displays monthly precipitation patterns in Brookhaven, 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 Brookhaven, October typically receives around 104 mm (4.1 inches) of precipitation spread over approximately 9 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 Brookhaven

In Brookhaven in October, humidity is 77%. With an average temperature of 21°C (70°F), this humidity feels like a warm, slightly sticky embrace, making travel invigorating yet slightly uncomfortable as you navigate the vibrant streets and outdoor attractions.

October Average Humidity in Brookhaven

This chart illustrates the average monthly humidity levels in Brookhaven, 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 Brookhaven is approximately 77%, 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 Brookhaven

In Brookhaven in October, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Brookhaven.

Maximum UV Index Levels in Brookhaven for October

The chart shows the monthly maximum UV Index (UVI) for Brookhaven 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 Brookhaven typically reaches 8, which falls under the very high exposure category.

Data source: Brookhaven 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 Brookhaven Compares to Other Months

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

This table compares monthly weather conditions in Brookhaven, showing how October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	10°C (50°F)	120 mm (4.7 inches)	83%	moderate
February Weather	13°C (55°F)	129 mm (5.1 inches)	83%	very high
March Weather	16°C (62°F)	120 mm (4.7 inches)	80%	very high
April Weather	18°C (65°F)	163 mm (6.4 inches)	81%	extreme
May Weather	23°C (74°F)	175 mm (6.9 inches)	81%	extreme
June Weather	26°C (79°F)	149 mm (5.8 inches)	78%	extreme
July Weather	27°C (81°F)	131 mm (5.1 inches)	79%	extreme
August Weather	27°C (80°F)	169 mm (6.6 inches)	79%	extreme
September Weather	26°C (78°F)	110 mm (4.3 inches)	79%	very high
October Weather	21°C (70°F)	104 mm (4.1 inches)	77%	very high
November Weather	14°C (57°F)	85 mm (3.4 inches)	85%	high
December Weather	12°C (53°F)	139 mm (5.5 inches)	88%	moderate