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September Weather in Apple Valley, United States

Last updated: June 24, 2025

In September, the average temperature in Apple Valley, United States is a pleasant 25°C (76°F). However, temperatures can range from a cool 9°C (48°F) to a scorching 42°C (107°F). Expect minimal rainfall, with an average precipitation of just 2 mm (0.1 in) over 0 days. The average humidity sits comfortably at 41%, making for ideal conditions throughout the month.

September Temperature in Apple Valley

In September in Apple Valley, the average temperature is 25°C (76°F), with maximums reaching 42°C (107°F) and minimums dropping as low as 9°C (48°F). Be prepared for a wide range of temperatures when traveling during this month.

September Weather in Apple Valley: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Apple Valley, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Apple Valley, September typically has an average temperature of 25°C (76°F), with highs reaching up to 42°C (107°F) and lows dropping to around 9°C (48°F).
JanFebMarAprMayJunJulAugSepOctNovDec484953616677838276655647
Data source: Temperature data for Apple 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.

September Precipitation in Apple Valley

In Apple Valley in September, the precipitation amount is 2 mm (0.1 in) during a span of 0 days.

September Precipitation Trends in Apple Valley

The chart displays monthly precipitation patterns in Apple Valley, 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 Apple Valley, September typically receives around 2 mm (0.1 inches) of precipitation spread over approximately 0 days.
JanFebMarAprMayJunJulAugSepOctNovDec354040177266251344
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Apple Valley

In Apple Valley in September, humidity is 41%. With an average temperature of 25°C (76°F), this humidity feels like a refreshing embrace, making it comfortable for traveling as you explore the sights with ease.

September Average Humidity in Apple Valley

This chart illustrates the average monthly humidity levels in Apple Valley, 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 Apple Valley is approximately 41%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec76%80%69%57%45%34%29%28%42%54%68%75%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Apple Valley

In Apple Valley 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 Apple Valley.

Maximum UV Index Levels in Apple Valley for September

The chart shows the monthly maximum UV Index (UVI) for Apple Valley 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 Apple Valley typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec469111112121110854
Data source: Apple Valley 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 Apple Valley Compares to Other Months

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

This table compares monthly weather conditions in Apple Valley, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather9°C (48°F)35 mm (1.4 inches)76%moderate
February Weather10°C (49°F)40 mm (1.6 inches)80%high
March Weather12°C (53°F)40 mm (1.6 inches)69%very high
April Weather16°C (61°F)17 mm (0.7 inches)57%extreme
May Weather19°C (67°F)7 mm (0.3 inches)45%extreme
June Weather25°C (77°F)2 mm (0.1 inches)34%extreme
July Weather28°C (83°F)6 mm (0.2 inches)29%extreme
August Weather28°C (82°F)6 mm (0.2 inches)28%extreme
September Weather25°C (76°F)2 mm (0.1 inches)41%very high
October Weather18°C (65°F)5 mm (0.2 inches)54%very high
November Weather13°C (56°F)13 mm (0.5 inches)68%moderate
December Weather8°C (47°F)44 mm (1.7 inches)75%moderate

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