October Weather in Heathrow, United States

Last updated: June 24, 2025

In October, the average temperature in Heathrow, United States is a pleasant 25°C (77°F). Expect minimums dipping to 7°C (45°F) and maximums rising to 33°C (91°F). While you enjoy the mild weather, prepare for 82 mm (3.2 in) of precipitation over 15 days, contributing to an average humidity of 81%.

October Temperature in Heathrow

In October in Heathrow, the average temperature is 25°C (77°F). Maximums can reach 33°C (91°F), and minimums can be as low as 7°C (45°F). This diverse climate offers travelers a pleasant mix of warm days and cooler evenings, making it an ideal time to explore.

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

The chart illustrates October temperature patterns in Heathrow, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Heathrow, October typically has an average temperature of 25°C (77°F), with highs reaching up to 33°C (91°F) and lows dropping to around 7°C (45°F).

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

October Precipitation in Heathrow

In Heathrow in October, the precipitation amount is 82 mm (3.2 in) over the course of 15 days.

October Precipitation Trends in Heathrow

The chart displays monthly precipitation patterns in Heathrow, 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 Heathrow, October typically receives around 82 mm (3.2 inches) of precipitation spread over approximately 15 days.

Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

October Humidity in Heathrow

In Heathrow in October, humidity is 81%. With an average temperature of 25°C (77°F), this humidity feels like walking through a warm, thick blanket, making traveling quite challenging as you may feel sticky and sluggish, requiring frequent breaks to stay refreshed and hydrated.

October Average Humidity in Heathrow

This chart illustrates the average monthly humidity levels in Heathrow, 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 Heathrow 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 Heathrow

In Heathrow in October, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Heathrow.

Maximum UV Index Levels in Heathrow for October

The chart shows the monthly maximum UV Index (UVI) for Heathrow 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 Heathrow typically reaches 9, which falls under the very high exposure category.

Data source: Heathrow 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 Heathrow Compares to Other Months

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

This table compares monthly weather conditions in Heathrow, showing how October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	16°C (61°F)	37 mm (1.5 inches)	83%	moderate
February Weather	19°C (66°F)	56 mm (2.2 inches)	80%	very high
March Weather	20°C (68°F)	25 mm (1.0 inches)	75%	very high
April Weather	22°C (72°F)	75 mm (3.0 inches)	70%	extreme
May Weather	25°C (77°F)	107 mm (4.2 inches)	68%	extreme
June Weather	27°C (81°F)	199 mm (7.9 inches)	75%	extreme
July Weather	27°C (82°F)	216 mm (8.5 inches)	79%	extreme
August Weather	28°C (82°F)	222 mm (8.7 inches)	81%	extreme
September Weather	27°C (81°F)	165 mm (6.5 inches)	83%	extreme
October Weather	25°C (77°F)	82 mm (3.2 inches)	81%	very high
November Weather	20°C (69°F)	44 mm (1.7 inches)	82%	high
December Weather	17°C (63°F)	62 mm (2.4 inches)	84%	moderate