June Weather in Northwest, United States

Last updated: June 24, 2025

In June, the average temperature in Northwest, United States hovers around 25°C (77°F), creating a pleasant climate for outdoor activities. However, be prepared for temperature fluctuations, as it can dip to a cool 11°C (52°F) and peak at a warm 34°C (94°F). With about 160 mm (6.3 in) of precipitation spread over 18 days, it's wise to keep an umbrella handy. The average humidity sits at a comfortable 81%, adding a touch of tropical allure to your adventures!

June Temperature in Northwest

In June in Northwest, the average temperature is 25°C (77°F). Maximums can reach 34°C (94°F) and minimums can be as low as 11°C (52°F). This pleasant climate makes Northwest an ideal destination for travelers seeking a comfortable getaway.

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

The chart illustrates June temperature patterns in Northwest, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Northwest, June typically has an average temperature of 25°C (77°F), with highs reaching up to 34°C (94°F) and lows dropping to around 11°C (52°F).

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

June Precipitation in Northwest

In Northwest in June, the precipitation amount is 160 mm (6.3 in) spread across 18 days.

June Precipitation Trends in Northwest

The chart displays monthly precipitation patterns in Northwest, 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 Northwest, June typically receives around 160 mm (6.3 inches) of precipitation spread over approximately 18 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 Northwest

In Northwest in June, humidity is 81%. With an average temperature of 25°C (77°F), this humidity feels like walking through a warm, thick blanket, making traveling quite challenging as you may feel sticky and sluggish, requiring frequent breaks to stay refreshed and hydrated.

June Average Humidity in Northwest

This chart illustrates the average monthly humidity levels in Northwest, 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 Northwest is approximately 81%, 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 Northwest

In Northwest in June, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Northwest.

Maximum UV Index Levels in Northwest for June

The chart shows the monthly maximum UV Index (UVI) for Northwest 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 Northwest typically reaches 11, which falls under the extreme exposure category.

Data source: Northwest 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 Northwest Compares to Other Months

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

This table compares monthly weather conditions in Northwest, showing how June’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	9°C (48°F)	70 mm (2.8 inches)	85%	moderate
February Weather	12°C (53°F)	93 mm (3.7 inches)	82%	high
March Weather	13°C (56°F)	70 mm (2.8 inches)	81%	very high
April Weather	18°C (64°F)	94 mm (3.7 inches)	80%	very high
May Weather	22°C (72°F)	120 mm (4.7 inches)	81%	extreme
June Weather	25°C (77°F)	160 mm (6.3 inches)	81%	extreme
July Weather	27°C (80°F)	171 mm (6.7 inches)	81%	extreme
August Weather	26°C (80°F)	205 mm (8.1 inches)	80%	very high
September Weather	24°C (76°F)	193 mm (7.6 inches)	79%	very high
October Weather	20°C (69°F)	64 mm (2.5 inches)	80%	very high
November Weather	13°C (55°F)	110 mm (4.3 inches)	85%	high
December Weather	10°C (51°F)	124 mm (4.9 inches)	86%	moderate