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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 23°C (74°F), offering a pleasant climate for outdoor activities. Expect temperatures to range from a cool 8°C (47°F) to a warm 36°C (97°F). While you enjoy the sunshine, be prepared for some rain, as precipitation averages 120 mm (4.7 in) over 9 days, and the average humidity stands at 64%.

September Temperature in Smithville

In September in Smithville, the average temperature is 23°C (74°F). The maximum can reach 36°C (97°F) and the minimum can be as low as 8°C (47°F). This makes it an ideal destination for travelers seeking warm weather, but be prepared for 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 23°C (74°F), with highs reaching up to 36°C (97°F) and lows dropping to around 8°C (47°F).
JanFebMarAprMayJunJulAugSepOctNovDec414653597076797773634946
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 precipitation amount is 120 mm (4.7 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 120 mm (4.7 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec10918916814912613112211712013180148
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 64%. With an average temperature of 23°C (74°F), this humidity feels like a warm blanket wrapping around you, making outdoor exploration enjoyable yet slightly sticky, so it's best to stay hydrated and take breaks in the shade while traveling.

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 64%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%87%85%82%83%82%78%67%64%75%87%89%
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 is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For 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 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec36810111111109753
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 Weather5°C (41°F)108 mm (4.3 inches)87%moderate
February Weather8°C (46°F)189 mm (7.4 inches)87%high
March Weather12°C (53°F)168 mm (6.6 inches)85%very high
April Weather15°C (59°F)149 mm (5.9 inches)82%very high
May Weather21°C (70°F)126 mm (5.0 inches)83%extreme
June Weather24°C (76°F)131 mm (5.1 inches)82%extreme
July Weather26°C (80°F)122 mm (4.8 inches)78%extreme
August Weather25°C (78°F)117 mm (4.6 inches)67%very high
September Weather23°C (74°F)120 mm (4.7 inches)64%very high
October Weather17°C (64°F)130 mm (5.1 inches)74%high
November Weather9°C (49°F)80 mm (3.2 inches)87%moderate
December Weather8°C (46°F)148 mm (5.8 inches)88%moderate

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