August Weather in Saint Helen, United States

Last updated: June 24, 2025

In Saint Helen, United States, the average temperature in August hovers around 20°C (69°F). Expect a minimum of 6°C (43°F) and a maximum reaching 32°C (90°F). During this month, precipitation amounts to 89 mm (3.5 in) over approximately 12 days, with an average humidity level of 75%.

August Temperature in Saint Helen

In August in Saint Helen, the average temperature is 20°C (69°F), with maximums reaching 32°C (90°F) and minimums dropping as low as 6°C (43°F). This climate makes it an ideal time for travelers to enjoy outdoor activities while being prepared for varying temperatures.

August Weather in Saint Helen: Daily Temperature Highs, Lows, and Averages

The chart illustrates August temperature patterns in Saint Helen, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Saint Helen, August typically has an average temperature of 20°C (69°F), with highs reaching up to 32°C (90°F) and lows dropping to around 6°C (43°F).

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

August Precipitation in Saint Helen

In Saint Helen in August, the precipitation amount is 89 mm (3.5 in) during 12 days of rainfall.

August Precipitation Trends in Saint Helen

The chart displays monthly precipitation patterns in Saint Helen, 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 Saint Helen, August typically receives around 89 mm (3.5 inches) of precipitation spread over approximately 12 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 Saint Helen

In Saint Helen in August, humidity is 75%. With an average temperature of 20°C (69°F), this humidity feels like a warm, enveloping blanket, making travel a bit muggy and requiring frequent hydration breaks to stay comfortable while exploring.

August Average Humidity in Saint Helen

This chart illustrates the average monthly humidity levels in Saint Helen, 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 Saint Helen is approximately 75%, 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 Saint Helen

In Saint Helen 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 Saint Helen.

Maximum UV Index Levels in Saint Helen for August

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

Data source: Saint Helen 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 Saint Helen Compares to Other Months

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

This table compares monthly weather conditions in Saint Helen, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-6°C (22°F)	51 mm (2.0 inches)	92%	low
February Weather	-6°C (22°F)	51 mm (2.0 inches)	91%	moderate
March Weather	0°C (32°F)	54 mm (2.1 inches)	87%	moderate
April Weather	6°C (43°F)	94 mm (3.7 inches)	85%	very high
May Weather	13°C (56°F)	111 mm (4.4 inches)	79%	very high
June Weather	19°C (66°F)	114 mm (4.5 inches)	75%	very high
July Weather	22°C (72°F)	91 mm (3.6 inches)	75%	very high
August Weather	20°C (69°F)	89 mm (3.5 inches)	75%	very high
September Weather	16°C (61°F)	76 mm (3.0 inches)	79%	high
October Weather	10°C (49°F)	124 mm (4.9 inches)	85%	moderate
November Weather	2°C (35°F)	58 mm (2.3 inches)	88%	moderate
December Weather	-2°C (28°F)	62 mm (2.4 inches)	89%	low