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September Weather in Smithville, United States

Last updated: June 24, 2025

In September, the average temperature in Smithville, United States hovers around 26°C (79°F). Expect a comfortable range, with minimums dipping to 13°C (55°F) and maximums soaring up to 38°C (100°F). However, be prepared for some rain, as precipitation totals 105 mm (4.1 in) across 9 days. The air tends to be quite humid, with an average humidity level of 83%.

September Temperature in Smithville

In September in Smithville, the average temperature is 26°C (79°F), with maximums reaching 38°C (100°F) and minimums dropping to as low as 13°C (55°F). This diverse weather makes Smithville an ideal destination for travelers who enjoy a mix of warm days and cooler evenings.

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

The chart illustrates September temperature patterns in Smithville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Smithville, September typically has an average temperature of 26°C (79°F), with highs reaching up to 38°C (100°F) and lows dropping to around 13°C (55°F).
JanFebMarAprMayJunJulAugSepOctNovDec515761667580828279715753
Data source: Temperature data for Smithville 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 Smithville

In Smithville in September, the total precipitation amount reaches 105 mm (4.1 in) over the course of 9 days.

September Precipitation Trends in Smithville

The chart displays monthly precipitation patterns in Smithville, 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 Smithville, September typically receives around 105 mm (4.1 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec8711491109839310310710510558126
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Smithville

In Smithville in September, humidity is 83%. With an average temperature of 26°C (79°F), this humidity feels like a heavy blanket enveloping you, making travel an exercise in endurance as the air clings to your skin and saps your energy.

September Average Humidity in Smithville

This chart illustrates the average monthly humidity levels in Smithville, 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 Smithville is approximately 83%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%82%80%76%73%74%80%79%83%77%84%88%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Smithville

In Smithville 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 Smithville.

Maximum UV Index Levels in Smithville for September

The chart shows the monthly maximum UV Index (UVI) for Smithville 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 Smithville typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec479101111111110864
Data source: Smithville 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 Smithville Compares to Other Months

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

This table compares monthly weather conditions in Smithville, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather10°C (51°F)87 mm (3.4 inches)85%moderate
February Weather14°C (57°F)114 mm (4.5 inches)82%high
March Weather16°C (61°F)91 mm (3.6 inches)80%very high
April Weather19°C (67°F)109 mm (4.3 inches)76%very high
May Weather24°C (75°F)83 mm (3.3 inches)73%extreme
June Weather26°C (80°F)93 mm (3.7 inches)74%extreme
July Weather28°C (83°F)103 mm (4.1 inches)80%extreme
August Weather28°C (82°F)107 mm (4.2 inches)79%extreme
September Weather26°C (79°F)105 mm (4.1 inches)83%very high
October Weather22°C (71°F)105 mm (4.1 inches)77%very high
November Weather14°C (58°F)58 mm (2.3 inches)84%high
December Weather12°C (53°F)126 mm (5.0 inches)88%moderate

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