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September Weather in Tonto Basin, United States

Last updated: June 24, 2025

In September, the average temperature in Tonto Basin, United States is a pleasant 26°C (79°F). Be prepared for a range of temperatures, as the minimum can drop to 8°C (46°F) while the maximum can soar up to 40°C (104°F). Expect an average precipitation amount of 35 mm (1.4 in) over 5 days, and enjoy the moderate humidity level of 64%.

September Temperature in Tonto Basin

In September in Tonto Basin, the average temperature is 26°C (79°F). Maximums can reach 40°C (104°F) and minimums can be as low as 8°C (46°F). It's best to pack for a range of temperatures and stay hydrated while exploring.

September Weather in Tonto Basin: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Tonto Basin, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Tonto Basin, September typically has an average temperature of 26°C (79°F), with highs reaching up to 40°C (104°F) and lows dropping to around 8°C (46°F).
JanFebMarAprMayJunJulAugSepOctNovDec464854647283848478665747
Data source: Temperature data for Tonto Basin 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.

September Precipitation in Tonto Basin

In Tonto Basin in September, the precipitation amount is 35 mm (1.4 in) over a span of 5 days.

September Precipitation Trends in Tonto Basin

The chart displays monthly precipitation patterns in Tonto Basin, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Tonto Basin, September typically receives around 35 mm (1.4 inches) of precipitation spread over approximately 5 days.
JanFebMarAprMayJunJulAugSepOctNovDec597250585724035363146
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Tonto Basin

In Tonto Basin in September, humidity is 64%. With an average temperature of 26°C (79°F), this humidity feels like a warm embrace, making travel slightly uncomfortable as the air clings to your skin and the heat amplifies.

September Average Humidity in Tonto Basin

This chart illustrates the average monthly humidity levels in Tonto Basin, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Tonto Basin is approximately 64%, 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 September generated using information from the Copernicus Climate Change Service.

September UV Index in Tonto Basin

In Tonto Basin in September, 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 Tonto Basin.

Maximum UV Index Levels in Tonto Basin for September

The chart shows the monthly maximum UV Index (UVI) for Tonto Basin in September, 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 September, the maximum UV index in Tonto Basin typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec469111212121110864
Data source: Tonto Basin September 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 September Weather in Tonto Basin Compares to Other Months

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

This table compares monthly weather conditions in Tonto Basin, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather8°C (46°F)58 mm (2.3 inches)76%moderate
February Weather9°C (48°F)72 mm (2.8 inches)79%high
March Weather12°C (55°F)50 mm (2.0 inches)67%very high
April Weather18°C (65°F)5 mm (0.2 inches)55%extreme
May Weather22°C (72°F)8 mm (0.3 inches)40%extreme
June Weather28°C (83°F)5 mm (0.2 inches)33%extreme
July Weather29°C (85°F)72 mm (2.8 inches)34%extreme
August Weather29°C (84°F)40 mm (1.6 inches)48%extreme
September Weather26°C (79°F)35 mm (1.4 inches)64%very high
October Weather19°C (66°F)36 mm (1.4 inches)67%very high
November Weather14°C (57°F)31 mm (1.2 inches)77%high
December Weather8°C (47°F)46 mm (1.8 inches)82%moderate

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