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September Weather in O'Donnell, United States

Last updated: June 24, 2025

In O'Donnell, United States, the average temperature in September hovers around 24°C (75°F), with a minimum dipping to 6°C (43°F) and peaks reaching up to 37°C (98°F). Expect 52 mm (2.1 in) of precipitation over 7 days, contributing to a comfortable average humidity of 69%. Whether you're exploring or relaxing, be prepared for a mix of warm days and refreshing rain!

September Temperature in O'Donnell

In September in O'Donnell, the average temperature is 24°C (75°F). Maximums can reach 37°C (98°F), while minimums can drop as low as 6°C (43°F). Be prepared for a wide range of temperatures and pack accordingly for your travels!

September Weather in O'Donnell: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in O'Donnell, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In O'Donnell, September typically has an average temperature of 24°C (75°F), with highs reaching up to 37°C (98°F) and lows dropping to around 6°C (43°F).
JanFebMarAprMayJunJulAugSepOctNovDec424556637380828275635246
Data source: Temperature data for O'Donnell 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 O'Donnell

In O'Donnell in September, the precipitation amount is 52 mm (2.1 in) over the course of 7 days.

September Precipitation Trends in O'Donnell

The chart displays monthly precipitation patterns in O'Donnell, 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 O'Donnell, September typically receives around 52 mm (2.1 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec231741376451252252492214
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in O'Donnell

In O'Donnell in September, humidity is 69%. With an average temperature of 24°C (75°F), this humidity feels like a warm embrace, making it both refreshing and somewhat muggy for traveling.

September Average Humidity in O'Donnell

This chart illustrates the average monthly humidity levels in O'Donnell, 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 O'Donnell is approximately 69%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec75%74%66%70%75%79%78%71%69%70%82%82%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in O'Donnell

In O'Donnell 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 O'Donnell.

Maximum UV Index Levels in O'Donnell for September

The chart shows the monthly maximum UV Index (UVI) for O'Donnell 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 O'Donnell typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec479111112121210864
Data source: O'Donnell 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 O'Donnell Compares to Other Months

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

This table compares monthly weather conditions in O'Donnell, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather6°C (43°F)23 mm (0.9 inches)75%moderate
February Weather7°C (45°F)17 mm (0.7 inches)74%high
March Weather13°C (56°F)41 mm (1.6 inches)66%very high
April Weather17°C (63°F)37 mm (1.5 inches)70%extreme
May Weather23°C (73°F)64 mm (2.5 inches)75%extreme
June Weather27°C (80°F)51 mm (2.0 inches)79%extreme
July Weather28°C (83°F)25 mm (1.0 inches)78%extreme
August Weather28°C (82°F)22 mm (0.9 inches)71%extreme
September Weather24°C (75°F)52 mm (2.1 inches)69%very high
October Weather17°C (63°F)49 mm (1.9 inches)70%very high
November Weather11°C (52°F)21 mm (0.8 inches)82%high
December Weather8°C (47°F)14 mm (0.6 inches)82%moderate

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