July Weather in Northwest, United States

Last updated: June 24, 2025

In July, the average temperature in Northwest, United States hovers around 27°C (80°F), with fluctuations between a minimum of 15°C (60°F) and a maximum of 34°C (94°F). Expect 171 mm (6.7 in) of precipitation spread over 19 days, contributing to an average humidity of 81%. Embrace the warmth and prepare for the occasional shower!

July Temperature in Northwest

In July in Northwest, the average temperature is 27°C (80°F), with maximums reaching 34°C (94°F) and minimums dropping to as low as 15°C (60°F). This weather makes it an ideal time for outdoor activities and exploring the area's attractions.

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

The chart illustrates July 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, July typically has an average temperature of 27°C (80°F), with highs reaching up to 34°C (94°F) and lows dropping to around 15°C (60°F).

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

July Precipitation in Northwest

In Northwest in July, the total precipitation amount is 171 mm (6.7 in), distributed over a span of 19 days.

July Precipitation Trends in Northwest

The chart displays monthly precipitation patterns in Northwest, 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 Northwest, July typically receives around 171 mm (6.7 inches) of precipitation spread over approximately 19 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

July Humidity in Northwest

In Northwest in July, humidity is 81%. With an average temperature of 27°C (80°F), this humidity feels like a warm blanket wrapping around you, making travel feel sticky and heavy, but the vibrant atmosphere can still be invigorating, inviting moments of exploration in slower, more deliberate steps.

July Average Humidity in Northwest

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

In Northwest in July, 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 July

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

Data source: Northwest 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 Northwest Compares to Other Months

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