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September Weather in Cottonwood, United States

Last updated: June 24, 2025

In Cottonwood, United States, the average temperature in September hovers around 16°C (62°F), with minimums dipping to 1°C (34°F) and maximums soaring up to 36°C (98°F). Visitors can expect 35 mm (1.4 in) of precipitation spread over 5 days, while the average humidity remains at a comfortable 60%.

September Temperature in Cottonwood

In September in Cottonwood, the average temperature is 16°C (62°F). The maximum can reach 36°C (98°F), and the minimum can be as low as 1°C (34°F). Travelers should be prepared for a wide range of temperatures, from warm days to chilly nights.

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

The chart illustrates September temperature patterns in Cottonwood, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Cottonwood, September typically has an average temperature of 16°C (62°F), with highs reaching up to 36°C (98°F) and lows dropping to around 1°C (34°F).
JanFebMarAprMayJunJulAugSepOctNovDec303138465462737261473732
Data source: Temperature data for Cottonwood 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 Cottonwood

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

September Precipitation Trends in Cottonwood

The chart displays monthly precipitation patterns in Cottonwood, 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 Cottonwood, September typically receives around 35 mm (1.4 inches) of precipitation spread over approximately 5 days.
JanFebMarAprMayJunJulAugSepOctNovDec551197792716342135677677
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Cottonwood

In Cottonwood in September humidity is 60%. With an average temperature of 16°C (62°F), this humidity feels like a refreshing embrace, making it comfortable for traveling as the mild temperature and moisture keep the air crisp and invigorating.

September Average Humidity in Cottonwood

This chart illustrates the average monthly humidity levels in Cottonwood, 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 Cottonwood is approximately 60%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec90%91%88%84%77%78%78%63%60%77%86%90%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Cottonwood

In Cottonwood in September, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Cottonwood.

Maximum UV Index Levels in Cottonwood for September

The chart shows the monthly maximum UV Index (UVI) for Cottonwood 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 Cottonwood typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec34689101098542
Data source: Cottonwood 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 Cottonwood Compares to Other Months

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

This table compares monthly weather conditions in Cottonwood, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (30°F)55 mm (2.2 inches)90%moderate
February Weather-1°C (31°F)119 mm (4.7 inches)91%moderate
March Weather4°C (39°F)77 mm (3.0 inches)88%high
April Weather8°C (46°F)92 mm (3.6 inches)84%very high
May Weather12°C (55°F)71 mm (2.8 inches)77%very high
June Weather17°C (63°F)63 mm (2.5 inches)78%very high
July Weather23°C (73°F)4 mm (0.2 inches)77%very high
August Weather22°C (72°F)21 mm (0.8 inches)63%very high
September Weather16°C (62°F)35 mm (1.4 inches)60%very high
October Weather8°C (47°F)67 mm (2.6 inches)77%moderate
November Weather3°C (38°F)76 mm (3.0 inches)86%moderate
December Weather0°C (32°F)77 mm (3.0 inches)89%low

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