July Weather in Heathrow, United States

Last updated: June 24, 2025

In July, the average temperature in Heathrow, United States reaches a warm 27°C (82°F). Daily highs can soar to 35°C (95°F), while the chill can dip to a comfortable 22°C (72°F). Prepare for 216 mm (8.5 in) of precipitation spread over 26 days, contributing to an average humidity level of 79%. Embrace the season and enjoy the tropical atmosphere!

July Temperature in Heathrow

In July, in Heathrow, the average temperature is 27°C (82°F). The maximum can reach 35°C (95°F) and the minimum can be as low as 22°C (72°F). This warm and pleasant climate makes Heathrow an ideal destination for travelers seeking both relaxation and adventure.

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

The chart illustrates July 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, July typically has an average temperature of 27°C (82°F), with highs reaching up to 35°C (95°F) and lows dropping to around 22°C (72°F).

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

July Precipitation in Heathrow

In Heathrow in July, the total precipitation amount is 216 mm (8.5 in) spread over the course of 26 days.

July Precipitation Trends in Heathrow

The chart displays monthly precipitation patterns in Heathrow, with values for each month alongside July’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how July’s conditions compare to those of other months. In Heathrow, July typically receives around 216 mm (8.5 inches) of precipitation spread over approximately 26 days.

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

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Millimeters (mm) Inches (in)

July Humidity in Heathrow

In Heathrow in July humidity is 79%. With an average temperature of 27°C (82°F), this humidity feels like traveling through a warm, thick blanket, making every step feel heavier and more exhausting, while the air clings to your skin, reminding you to stay hydrated and take frequent breaks in the shade.

July Average Humidity in Heathrow

This chart illustrates the average monthly humidity levels in Heathrow, with July’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In July, average humidity in Heathrow is approximately 79%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for July generated using information from the Copernicus Climate Change Service.

July UV Index in Heathrow

In Heathrow in July, the maximum UV index is 12, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, underscoring the importance of sun protection. For detailed information, you can check the Hourly UV Index in Heathrow.

Maximum UV Index Levels in Heathrow for July

The chart shows the monthly maximum UV Index (UVI) for Heathrow in July, 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 July, the maximum UV index in Heathrow typically reaches 12, which falls under the extreme exposure category.

Data source: Heathrow July 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 July 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 July’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 July’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