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September Weather in Cortez, United States

Last updated: June 24, 2025

In Cortez, United States, the average temperature in September is a warm 27°C (82°F). You can experience a comfortable minimum of 24°C (75°F) and a hotter maximum of 32°C (90°F). However, be prepared for some rain, with precipitation amounts around 152 mm (6.0 in) spread over 18 days. The average humidity is quite high at 78%, creating a warm and tropical atmosphere.

September Temperature in Cortez

In September in Cortez, the average temperature is 27°C (82°F), with maximums reaching up to 32°C (90°F) and minimums dropping to as low as 24°C (75°F). This mild and warm climate makes Cortez an ideal destination for travelers seeking pleasant weather and outdoor activities.

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

The chart illustrates September temperature patterns in Cortez, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Cortez, September typically has an average temperature of 27°C (82°F), with highs reaching up to 32°C (90°F) and lows dropping to around 24°C (75°F).
JanFebMarAprMayJunJulAugSepOctNovDec636668737781828281797166
Data source: Temperature data for Cortez 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 Cortez

In Cortez in September, the precipitation amount is 152 mm (6.0 in) distributed over 18 days.

September Precipitation Trends in Cortez

The chart displays monthly precipitation patterns in Cortez, 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 Cortez, September typically receives around 152 mm (6.0 inches) of precipitation spread over approximately 18 days.
JanFebMarAprMayJunJulAugSepOctNovDec38442255101168180208152674764
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Cortez

In Cortez in September humidity is 78%. With an average temperature of 27°C (82°F), this humidity feels like a warm blanket enveloping you, making outdoor activities a sweaty affair and requiring frequent breaks for hydration.

September Average Humidity in Cortez

This chart illustrates the average monthly humidity levels in Cortez, 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 Cortez is approximately 78%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%82%79%78%76%75%74%75%78%80%82%84%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Cortez

In Cortez in September, 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 Cortez.

Maximum UV Index Levels in Cortez for September

The chart shows the monthly maximum UV Index (UVI) for Cortez 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 Cortez typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec6810111112121111975
Data source: Cortez 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 Cortez Compares to Other Months

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

This table compares monthly weather conditions in Cortez, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather17°C (63°F)38 mm (1.5 inches)82%high
February Weather19°C (66°F)44 mm (1.7 inches)82%very high
March Weather20°C (68°F)22 mm (0.9 inches)79%very high
April Weather23°C (73°F)55 mm (2.2 inches)78%extreme
May Weather25°C (77°F)101 mm (4.0 inches)76%extreme
June Weather27°C (81°F)168 mm (6.6 inches)75%extreme
July Weather28°C (82°F)180 mm (7.1 inches)74%extreme
August Weather28°C (83°F)208 mm (8.2 inches)74%extreme
September Weather27°C (82°F)152 mm (6.0 inches)78%extreme
October Weather26°C (79°F)67 mm (2.7 inches)79%very high
November Weather22°C (71°F)47 mm (1.8 inches)82%high
December Weather19°C (66°F)64 mm (2.5 inches)84%moderate

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