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September Weather in Casey, United States

Last updated: June 24, 2025

In Casey, United States, the average temperature in September is a pleasant 22°C (72°F). Expect a temperature range that can dip to a cool 7°C (44°F) and soar to a warm 34°C (93°F). During this month, the area receives about 67 mm (2.6 in) of precipitation over approximately 6 days. With an average humidity of 79%, be prepared for a refreshing yet humid atmosphere!

September Temperature in Casey

In September in Casey, the average temperature is 22°C (72°F), with maximums reaching up to 34°C (93°F) and minimums dropping as low as 7°C (44°F). This pleasant range in temperatures makes Casey an ideal destination for travelers seeking a comfortable climate.

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

The chart illustrates September temperature patterns in Casey, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Casey, September typically has an average temperature of 22°C (72°F), with highs reaching up to 34°C (93°F) and lows dropping to around 7°C (44°F).
JanFebMarAprMayJunJulAugSepOctNovDec313445546676797571594237
Data source: Temperature data for Casey 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 Casey

In Casey in September, the precipitation amount is 67 mm (2.6 in) over the course of 6 days.

September Precipitation Trends in Casey

The chart displays monthly precipitation patterns in Casey, 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 Casey, September typically receives around 67 mm (2.6 inches) of precipitation spread over approximately 6 days.
JanFebMarAprMayJunJulAugSepOctNovDec8490126116135108117108671059379
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Casey

In Casey in September humidity is 79%. With an average temperature of 22°C (72°F), this humidity feels like you are enveloped in a warm, heavy blanket, making it feel considerably hotter and adding a layer of stickiness to your skin as you navigate through the streets.

September Average Humidity in Casey

This chart illustrates the average monthly humidity levels in Casey, 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 Casey is approximately 79%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%82%84%83%80%83%82%83%79%79%88%87%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Casey

In Casey 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 Casey.

Maximum UV Index Levels in Casey for September

The chart shows the monthly maximum UV Index (UVI) for Casey 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 Casey typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356910111098643
Data source: Casey 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 Casey Compares to Other Months

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

This table compares monthly weather conditions in Casey, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather0°C (31°F)84 mm (3.3 inches)84%moderate
February Weather1°C (35°F)90 mm (3.5 inches)82%moderate
March Weather7°C (45°F)126 mm (4.9 inches)84%high
April Weather12°C (54°F)116 mm (4.6 inches)83%very high
May Weather19°C (67°F)135 mm (5.3 inches)80%very high
June Weather24°C (76°F)108 mm (4.2 inches)83%extreme
July Weather26°C (79°F)117 mm (4.6 inches)82%very high
August Weather24°C (76°F)108 mm (4.3 inches)82%very high
September Weather22°C (72°F)67 mm (2.6 inches)79%very high
October Weather15°C (59°F)105 mm (4.1 inches)79%high
November Weather6°C (43°F)93 mm (3.7 inches)88%moderate
December Weather3°C (37°F)78 mm (3.1 inches)87%moderate

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