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September Weather in Cactus, United States

Last updated: June 24, 2025

In September, the average temperature in Cactus, United States is 22°C (72°F), providing a comfortable climate. However, temperatures can vary widely, ranging from a cool 2°C (36°F) to a sizzling 39°C (103°F). Expect 27 mm (1.1 in) of precipitation over about 4 days, while humidity averages around 72%, adding a slight dampness to the air. Be prepared for a mix of warm days and refreshing showers!

September Temperature in Cactus

In September in Cactus, the average temperature is 22°C (72°F). Maximum temperatures can reach 39°C (103°F), while minimums can dip as low as 2°C (36°F). Be prepared for a wide range of temperatures during your travels, from warm days to cool nights.

September Weather in Cactus: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Cactus, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Cactus, September typically has an average temperature of 22°C (72°F), with highs reaching up to 39°C (103°F) and lows dropping to around 2°C (36°F).
JanFebMarAprMayJunJulAugSepOctNovDec373849566676807772574740
Data source: Temperature data for Cactus 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 Cactus

In Cactus in September, the total precipitation amount is 27 mm (1.1 in) over a span of 4 days.

September Precipitation Trends in Cactus

The chart displays monthly precipitation patterns in Cactus, 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 Cactus, September typically receives around 27 mm (1.1 inches) of precipitation spread over approximately 4 days.
JanFebMarAprMayJunJulAugSepOctNovDec161144417145406127591215
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Cactus

In Cactus in September humidity is 72%. With an average temperature of 22°C (72°F), this humidity feels like you are stepping into a warm, embracing blanket, making traveling feel sweaty and slightly stifling, but the balmy weather is also quite perfect for exploring local attractions.

September Average Humidity in Cactus

This chart illustrates the average monthly humidity levels in Cactus, 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 Cactus is approximately 72%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec75%76%64%70%78%81%82%78%72%73%81%81%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Cactus

In Cactus 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 Cactus.

Maximum UV Index Levels in Cactus for September

The chart shows the monthly maximum UV Index (UVI) for Cactus 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 Cactus typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec468101112121110754
Data source: Cactus 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 Cactus Compares to Other Months

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

This table compares monthly weather conditions in Cactus, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather3°C (37°F)16 mm (0.6 inches)75%moderate
February Weather3°C (38°F)11 mm (0.4 inches)76%high
March Weather10°C (50°F)44 mm (1.7 inches)64%very high
April Weather13°C (56°F)41 mm (1.6 inches)70%very high
May Weather19°C (66°F)71 mm (2.8 inches)78%extreme
June Weather25°C (76°F)45 mm (1.8 inches)81%extreme
July Weather26°C (80°F)40 mm (1.6 inches)82%extreme
August Weather25°C (78°F)61 mm (2.4 inches)78%extreme
September Weather22°C (72°F)27 mm (1.1 inches)72%very high
October Weather14°C (57°F)59 mm (2.3 inches)73%high
November Weather8°C (47°F)12 mm (0.5 inches)80%moderate
December Weather4°C (40°F)15 mm (0.6 inches)81%moderate

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