August Weather in Scappoose, United States

Last updated: June 24, 2025

In Scappoose, United States, the average temperature in August hovers around 20°C (68°F), with a minimum dipping to 9°C (48°F) and a maximum soaring to 38°C (101°F). Expect a light touch of rain, with 8 mm (0.3 in) of precipitation spread over just 2 days. The air maintains a muggy feel, with an average humidity of 74%.

August Temperature in Scappoose

In August in Scappoose, the average temperature is 20°C (68°F). The maximum can reach 38°C (101°F) and the minimum can be as low as 9°C (48°F). This range makes it a great time to visit, offering both warm and cooler days for various outdoor activities.

August Weather in Scappoose: Daily Temperature Highs, Lows, and Averages

The chart illustrates August temperature patterns in Scappoose, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Scappoose, August typically has an average temperature of 20°C (68°F), with highs reaching up to 38°C (101°F) and lows dropping to around 9°C (48°F).

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

August Precipitation in Scappoose

In Scappoose in August, the precipitation amount is 8 mm (0.3 in) over the course of 2 days.

August Precipitation Trends in Scappoose

The chart displays monthly precipitation patterns in Scappoose, with values for each month alongside August’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how August’s conditions compare to those of other months. In Scappoose, August typically receives around 8 mm (0.3 inches) of precipitation spread over approximately 2 days.

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

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Millimeters (mm) Inches (in)

August Humidity in Scappoose

In Scappoose in August humidity is 74%. With an average temperature of 20°C (68°F), this humidity feels like a warm, sticky embrace that can make outdoor activities feel exhausting, prompting travelers to seek shade and hydration more often.

August Average Humidity in Scappoose

This chart illustrates the average monthly humidity levels in Scappoose, with August’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In August, average humidity in Scappoose is approximately 74%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Scappoose

In Scappoose in August, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Scappoose.

Maximum UV Index Levels in Scappoose for August

The chart shows the monthly maximum UV Index (UVI) for Scappoose in August, 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 August, the maximum UV index in Scappoose typically reaches 8, which falls under the very high exposure category.

Data source: Scappoose August 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 August Weather in Scappoose Compares to Other Months

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

This table compares monthly weather conditions in Scappoose, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	5°C (41°F)	176 mm (6.9 inches)	85%	low
February Weather	4°C (40°F)	163 mm (6.4 inches)	84%	moderate
March Weather	7°C (45°F)	140 mm (5.5 inches)	85%	moderate
April Weather	10°C (50°F)	119 mm (4.7 inches)	83%	high
May Weather	13°C (57°F)	64 mm (2.5 inches)	83%	very high
June Weather	16°C (62°F)	54 mm (2.1 inches)	83%	very high
July Weather	19°C (66°F)	8 mm (0.3 inches)	82%	very high
August Weather	20°C (68°F)	8 mm (0.3 inches)	74%	very high
September Weather	17°C (62°F)	74 mm (2.9 inches)	71%	high
October Weather	11°C (52°F)	107 mm (4.2 inches)	81%	moderate
November Weather	7°C (45°F)	166 mm (6.5 inches)	87%	moderate
December Weather	5°C (40°F)	186 mm (7.3 inches)	87%	low