August Weather in Nampa, United States

Last updated: June 24, 2025

In Nampa, United States, the average temperature in August hovers around 26°C (79°F). However, be prepared for temperatures that can dip as low as 9°C (49°F) or soar up to a sizzling 43°C (110°F). This month sees a modest precipitation of 7 mm (0.3 in) over just 1 day, and the average humidity sits at a comfortable 50%.

August Temperature in Nampa

In August in Nampa, the average temperature is 26°C (79°F). Maximums can reach 43°C (110°F) and minimums can drop to as low as 9°C (49°F). Be prepared for a wide range of temperatures when traveling during this time.

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

The chart illustrates August temperature patterns in Nampa, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Nampa, August typically has an average temperature of 26°C (79°F), with highs reaching up to 43°C (110°F) and lows dropping to around 9°C (49°F).

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

August Precipitation in Nampa

In Nampa in August, the precipitation amount is 7 mm (0.3 in) over the course of 1 day.

August Precipitation Trends in Nampa

The chart displays monthly precipitation patterns in Nampa, 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 Nampa, August typically receives around 7 mm (0.3 inches) of precipitation spread over approximately 1 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 Nampa

In Nampa in August humidity is 50%. With an average temperature of 26°C (79°F), this humidity feels like a pleasant warmth that envelops you, making it ideal for leisurely strolls and exploration, though you may find yourself seeking shade or a refreshing drink after a few hours of outdoor activity.

August Average Humidity in Nampa

This chart illustrates the average monthly humidity levels in Nampa, 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 Nampa is approximately 50%, 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 Nampa

In Nampa in August, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Nampa.

Maximum UV Index Levels in Nampa for August

The chart shows the monthly maximum UV Index (UVI) for Nampa 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 Nampa typically reaches 9, which falls under the very high exposure category.

Data source: Nampa 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 Nampa Compares to Other Months

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

This table compares monthly weather conditions in Nampa, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	1°C (34°F)	43 mm (1.7 inches)	88%	moderate
February Weather	3°C (37°F)	41 mm (1.6 inches)	89%	moderate
March Weather	8°C (47°F)	34 mm (1.3 inches)	85%	high
April Weather	12°C (54°F)	34 mm (1.3 inches)	79%	very high
May Weather	16°C (62°F)	35 mm (1.4 inches)	71%	very high
June Weather	22°C (72°F)	19 mm (0.7 inches)	71%	extreme
July Weather	27°C (82°F)	1 mm (0.1 inches)	66%	extreme
August Weather	26°C (79°F)	7 mm (0.3 inches)	50%	very high
September Weather	20°C (68°F)	10 mm (0.4 inches)	48%	very high
October Weather	12°C (53°F)	21 mm (0.8 inches)	65%	high
November Weather	6°C (43°F)	29 mm (1.1 inches)	84%	moderate
December Weather	2°C (35°F)	35 mm (1.4 inches)	87%	low