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July Weather in Portland, United States

Last updated: June 24, 2025

The average temperature in Portland, United States in July reaches a comfortable 22°C (72°F). Expect a minimum of 16°C (60°F) and a pleasant maximum of 27°C (81°F). Throughout the month, anticipate 125 mm (4.9 in) of precipitation spread over 14 days, with an average humidity level of 77%. Enjoy the cozy climate while being prepared for occasional showers!

July Temperature in Portland

In July in Portland, the average temperature is 22°C (72°F). Maximum can reach 27°C (81°F), and minimum can be as low as 16°C (60°F). This pleasant climate makes Portland a great destination for travelers seeking comfortable weather.

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

The chart illustrates July temperature patterns in Portland, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Portland, July typically has an average temperature of 22°C (72°F), with highs reaching up to 27°C (81°F) and lows dropping to around 16°C (60°F).
JanFebMarAprMayJunJulAugSepOctNovDec292934415163717166564235
Data source: Temperature data for Portland generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

July Precipitation in Portland

In Portland in July, the precipitation amount is 125 mm (4.9 in) over the course of 14 days.

July Precipitation Trends in Portland

The chart displays monthly precipitation patterns in Portland, 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 Portland, July typically receives around 125 mm (4.9 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec9898951121111021268588151125128
Data source: Precipitation data for July generated using information from the Copernicus Climate Change Service.
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July Humidity in Portland

In Portland in July humidity is 77%. With average temperature 22°C (72°F), this humidity feels like walking through a warm, damp embrace, making outdoor activities both refreshing and slightly uncomfortable for travelers unaccustomed to such conditions.

July Average Humidity in Portland

This chart illustrates the average monthly humidity levels in Portland, 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 Portland is approximately 77%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%91%88%88%82%80%77%72%76%83%88%87%
Data source: Humidity data for July generated using information from the Copernicus Climate Change Service.

July UV Index in Portland

In Portland 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 Portland.

Maximum UV Index Levels in Portland for July

The chart shows the monthly maximum UV Index (UVI) for Portland 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 Portland typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec24689101098642
Data source: Portland 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 Portland Compares to Other Months

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

This table compares monthly weather conditions in Portland, showing how July’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (29°F)98 mm (3.9 inches)91%low
February Weather-1°C (30°F)98 mm (3.9 inches)91%moderate
March Weather1°C (34°F)95 mm (3.7 inches)88%high
April Weather5°C (41°F)112 mm (4.4 inches)88%very high
May Weather11°C (52°F)111 mm (4.4 inches)82%very high
June Weather17°C (63°F)102 mm (4.0 inches)79%very high
July Weather22°C (72°F)125 mm (4.9 inches)77%very high
August Weather22°C (71°F)85 mm (3.3 inches)72%very high
September Weather19°C (66°F)88 mm (3.5 inches)76%very high
October Weather13°C (56°F)151 mm (5.9 inches)83%high
November Weather6°C (43°F)125 mm (4.9 inches)88%moderate
December Weather2°C (36°F)128 mm (5.0 inches)87%low

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