July Weather in Washington, United States

Last updated: June 24, 2025

In Washington, United States, the average temperature in July hovers around 22°C (72°F), creating a pleasant climate for outdoor activities. Expect temperatures to range from a cool 10°C (51°F) to a warm 34°C (94°F). However, be prepared for 182 mm (7.1 in) of precipitation spread over 14 days, resulting in a humidity level of around 66%. Whether you're basking in the sun or enjoying a refreshing rain shower, there's plenty to experience this month!

July Temperature in Washington

In July in Washington, the average temperature is 22°C (72°F), with maximums reaching up to 34°C (94°F) and minimums dipping as low as 10°C (51°F). This pleasant temperature range makes Washington an ideal destination for travelers seeking comfortable weather to explore outdoor activities and attractions.

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 22°C (72°F), with highs reaching up to 34°C (94°F) and lows dropping to around 10°C (51°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 182 mm (7.1 in) over the course of 14 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 182 mm (7.1 inches) of precipitation spread over approximately 14 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 66%. With an average temperature of 22°C (72°F), this humidity feels like walking through a warm, enveloping blanket, making it essential to stay hydrated while exploring the sights and taking regular breaks in shaded areas.

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 66%, 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 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 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 9, 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	-4°C (26°F)	86 mm (3.4 inches)	89%	moderate
February Weather	-2°C (29°F)	104 mm (4.1 inches)	88%	moderate
March Weather	1°C (34°F)	90 mm (3.6 inches)	86%	high
April Weather	8°C (46°F)	157 mm (6.2 inches)	84%	very high
May Weather	14°C (57°F)	121 mm (4.8 inches)	76%	very high
June Weather	19°C (67°F)	109 mm (4.3 inches)	72%	very high
July Weather	22°C (72°F)	182 mm (7.1 inches)	66%	very high
August Weather	21°C (70°F)	143 mm (5.6 inches)	64%	very high
September Weather	17°C (63°F)	129 mm (5.1 inches)	72%	very high
October Weather	11°C (53°F)	174 mm (6.9 inches)	81%	high
November Weather	4°C (39°F)	106 mm (4.2 inches)	87%	moderate
December Weather	-1°C (30°F)	130 mm (5.1 inches)	84%	low