June Weather in Washington, United States

Last updated: June 24, 2025

In June, the average temperature in Washington, United States hovers around 19°C (67°F), offering a mild climate for visitors. However, be prepared for temperature fluctuations, as it can dip as low as 4°C (40°F) and soar to a maximum of 33°C (92°F). With an average precipitation of 109 mm (4.3 in) spread over 13 days, and humidity levels reaching 72%, it's wise to carry an umbrella and stay hydrated while enjoying your time in this vibrant locale!

June Temperature in Washington

In June in Washington, the average temperature is 19°C (67°F). Maximums can reach 33°C (92°F) while minimums can be as low as 4°C (40°F). This range makes it an ideal time for travelers to enjoy a variety of outdoor activities while also being prepared for cooler evenings.

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

The chart illustrates June 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, June typically has an average temperature of 19°C (67°F), with highs reaching up to 33°C (92°F) and lows dropping to around 4°C (40°F).

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

June Precipitation in Washington

In Washington in June, the precipitation amount is 109 mm (4.3 in), which occurs during 13 days.

June Precipitation Trends in Washington

The chart displays monthly precipitation patterns in Washington, 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 Washington, June typically receives around 109 mm (4.3 inches) of precipitation spread over approximately 13 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 Washington

In Washington in June, humidity is 72%. With an average temperature of 19°C (67°F), this humidity feels like a warm, damp blanket enveloping you, making outdoor activities a bit more challenging but also giving the air a refreshing quality that's invigorating for short excursions.

June Average Humidity in Washington

This chart illustrates the average monthly humidity levels in Washington, 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 Washington is approximately 72%, 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 Washington

In Washington in June, 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 June

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

Data source: Washington 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 Washington Compares to Other Months

Weather in Washington varies notably across the year, with each month offering distinct climate conditions. This page compares June’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 June’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