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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 22°C (72°F). Expect temperatures to range from a chilly 2°C (36°F) to a sweltering 38°C (101°F). You'll find the weather generally dry, with a total precipitation of only 11 mm (0.4 in) spread over just 2 days. With an average humidity of 47%, it’s a comfortable climate to enjoy outdoor activities!

September Temperature in Apple Valley

In September in Apple Valley, the average temperature is 22°C (72°F). Maximums can reach 38°C (101°F), while minimums can drop as low as 2°C (36°F). Be sure to pack for a range of temperatures to ensure a comfortable trip!

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 22°C (72°F), with highs reaching up to 38°C (101°F) and lows dropping to around 2°C (36°F).
JanFebMarAprMayJunJulAugSepOctNovDec333644556477828072564535
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 11 mm (0.4 in) over the course of 2 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 11 mm (0.4 inches) of precipitation spread over approximately 2 days.
JanFebMarAprMayJunJulAugSepOctNovDec52527322232222611303146
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 47%. With an average temperature of 22°C (72°F), this humidity feels like a refreshing embrace, making it comfortable for traveling and exploring the sights without feeling overly sticky or oppressive.

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 47%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec80%82%72%62%45%34%30%31%47%62%77%80%
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.
JanFebMarAprMayJunJulAugSepOctNovDec478101112121110754
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 Weather0°C (33°F)52 mm (2.0 inches)80%moderate
February Weather2°C (36°F)52 mm (2.0 inches)82%high
March Weather7°C (45°F)73 mm (2.9 inches)72%very high
April Weather13°C (55°F)22 mm (0.9 inches)62%very high
May Weather18°C (64°F)23 mm (0.9 inches)45%extreme
June Weather25°C (77°F)2 mm (0.1 inches)34%extreme
July Weather28°C (82°F)22 mm (0.9 inches)30%extreme
August Weather27°C (80°F)26 mm (1.0 inches)31%extreme
September Weather22°C (72°F)11 mm (0.4 inches)47%very high
October Weather13°C (56°F)30 mm (1.2 inches)62%high
November Weather7°C (46°F)31 mm (1.2 inches)77%moderate
December Weather1°C (35°F)46 mm (1.8 inches)80%moderate

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