July Weather in Washington, United States

Last updated: June 24, 2025

In Washington, United States, the average temperature for July hovers around 24°C (75°F), with a comfortable range of 13°C (55°F) to a warm 34°C (94°F). However, be prepared for a bit of rain, as 142 mm (5.6 in) of precipitation may fall over approximately 15 days. With an average humidity of 82%, it's best to embrace the tropical atmosphere!

July Temperature in Washington

In July in Washington, the average temperature is 24°C (75°F). Maximums can reach 34°C (94°F) and minimums can be as low as 13°C (55°F). This makes it an ideal time to explore outdoor activities while enjoying mild evenings and warm days.

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

The chart illustrates July temperature patterns in Washington, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Washington, July typically has an average temperature of 24°C (75°F), with highs reaching up to 34°C (94°F) and lows dropping to around 13°C (55°F).

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

July Precipitation in Washington

In Washington in July, the total precipitation amount is 142 mm (5.6 in) spread over a period of 15 days.

July Precipitation Trends in Washington

The chart displays monthly precipitation patterns in Washington, 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 Washington, July typically receives around 142 mm (5.6 inches) of precipitation spread over approximately 15 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 Washington

In Washington in July, humidity is 82%. With an average temperature of 24°C (75°F), this humidity feels like a warm embrace, making travel feel sticky and heavy on the skin, often requiring more frequent breaks and hydration.

July Average Humidity in Washington

This chart illustrates the average monthly humidity levels in Washington, 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 Washington is approximately 82%, 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 Washington

In Washington in July, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Washington.

Maximum UV Index Levels in Washington for July

The chart shows the monthly maximum UV Index (UVI) for Washington 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 Washington typically reaches 10, which falls under the very high exposure category.

Data source: Washington 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 Washington Compares to Other Months

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

This table compares monthly weather conditions in Washington, showing how July’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	0°C (32°F)	88 mm (3.5 inches)	88%	moderate
February Weather	2°C (36°F)	121 mm (4.8 inches)	88%	moderate
March Weather	6°C (42°F)	112 mm (4.4 inches)	87%	high
April Weather	11°C (52°F)	130 mm (5.1 inches)	87%	very high
May Weather	17°C (63°F)	138 mm (5.5 inches)	81%	very high
June Weather	21°C (70°F)	147 mm (5.8 inches)	83%	very high
July Weather	24°C (75°F)	142 mm (5.6 inches)	82%	very high
August Weather	23°C (73°F)	88 mm (3.5 inches)	76%	very high
September Weather	20°C (68°F)	124 mm (4.9 inches)	77%	very high
October Weather	14°C (58°F)	122 mm (4.8 inches)	82%	high
November Weather	6°C (43°F)	88 mm (3.5 inches)	89%	moderate
December Weather	3°C (37°F)	106 mm (4.2 inches)	86%	low