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August Weather in San Tan Valley, United States

Last updated: June 24, 2025

In August, the average temperature in San Tan Valley, United States soars to a sizzling 33°C (92°F). While the thermometer can dip to a comfortable 22°C (72°F), it may also spike to a scorching 45°C (114°F). With an average humidity of 48%, the climate can feel quite intense. Expect a modest 34 mm (1.4 in) of precipitation spread over 5 days, adding a refreshing twist to the heat.

August Temperature in San Tan Valley

In August in San Tan Valley, the average temperature is 33°C (92°F), with maximums reaching up to 45°C (114°F) and minimums dropping as low as 22°C (72°F). Be prepared for hot weather and stay hydrated while exploring!

August Weather in San Tan Valley: Daily Temperature Highs, Lows, and Averages

The chart illustrates August temperature patterns in San Tan Valley, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Tan Valley, August typically has an average temperature of 33°C (92°F), with highs reaching up to 45°C (114°F) and lows dropping to around 22°C (72°F).
JanFebMarAprMayJunJulAugSepOctNovDec545663738091939287756554
Data source: Temperature data for San Tan Valley 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.

August Precipitation in San Tan Valley

In San Tan Valley in August, the precipitation amount is 34 mm (1.4 in) spread over 5 days.

August Precipitation Trends in San Tan Valley

The chart displays monthly precipitation patterns in San Tan Valley, 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 San Tan Valley, August typically receives around 34 mm (1.4 inches) of precipitation spread over approximately 5 days.
JanFebMarAprMayJunJulAugSepOctNovDec334225233453429202130
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in San Tan Valley

In San Tan Valley in August humidity is 48%. With an average temperature of 33°C (92°F), this humidity feels like a warm blanket wrapping around you, making travel mildly uncomfortable but still manageable as long as you stay hydrated and take breaks in the shade.

August Average Humidity in San Tan Valley

This chart illustrates the average monthly humidity levels in San Tan Valley, 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 San Tan Valley is approximately 48%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec76%79%67%55%40%33%34%48%64%67%77%82%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in San Tan Valley

In San Tan Valley in August, 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 San Tan Valley.

Maximum UV Index Levels in San Tan Valley for August

The chart shows the monthly maximum UV Index (UVI) for San Tan Valley 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 San Tan Valley typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec469111112111110854
Data source: San Tan Valley 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 San Tan Valley Compares to Other Months

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

This table compares monthly weather conditions in San Tan Valley, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather12°C (54°F)33 mm (1.3 inches)76%moderate
February Weather13°C (56°F)42 mm (1.7 inches)79%high
March Weather17°C (64°F)25 mm (1.0 inches)67%very high
April Weather23°C (73°F)2 mm (0.1 inches)55%extreme
May Weather27°C (80°F)3 mm (0.1 inches)40%extreme
June Weather33°C (91°F)3 mm (0.1 inches)33%extreme
July Weather34°C (93°F)45 mm (1.8 inches)34%extreme
August Weather33°C (92°F)34 mm (1.4 inches)48%extreme
September Weather30°C (87°F)29 mm (1.2 inches)64%very high
October Weather24°C (75°F)20 mm (0.8 inches)67%very high
November Weather18°C (65°F)21 mm (0.8 inches)77%moderate
December Weather12°C (55°F)30 mm (1.2 inches)82%moderate

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