June Weather in Heathrow, United States

Last updated: June 24, 2025

In June, the average temperature in Heathrow, United States is a warm 27°C (81°F). The temperatures can vary, with a minimum of 20°C (69°F) and soaring as high as 36°C (97°F). Visitors should be prepared for some rain, as the area experiences 199 mm (7.9 in) of precipitation spread over 23 days. Additionally, the average humidity levels sit at a comfortable 75%, creating a tropical vibe perfect for exploring!

June Temperature in Heathrow

In June in Heathrow, the average temperature is 27°C (81°F), with maximums reaching 36°C (97°F) and minimums dropping as low as 20°C (69°F). This warm climate makes it an ideal destination for travelers seeking sunny weather and outdoor adventures.

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

The chart illustrates June 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, June typically has an average temperature of 27°C (81°F), with highs reaching up to 36°C (97°F) and lows dropping to around 20°C (69°F).

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

June Precipitation in Heathrow

In Heathrow in June, the total precipitation amount is 199 mm (7.9 in), which occurs over a span of 23 days.

June Precipitation Trends in Heathrow

The chart displays monthly precipitation patterns in Heathrow, with values for each month alongside June’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how June’s conditions compare to those of other months. In Heathrow, June typically receives around 199 mm (7.9 inches) of precipitation spread over approximately 23 days.

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

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Millimeters (mm) Inches (in)

June Humidity in Heathrow

In Heathrow in June, humidity is 75%. With an average temperature of 27°C (81°F), this humidity feels like a blanket of warmth enveloping you, making outdoor activities sticky and potentially uncomfortable for traveling.

June Average Humidity in Heathrow

This chart illustrates the average monthly humidity levels in Heathrow, with June’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In June, average humidity in Heathrow is approximately 75%, offering insight into how humid the weather typically is during this month.

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

June UV Index in Heathrow

In Heathrow in June, 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 June

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

Data source: Heathrow June 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 June 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 June’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 June’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