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September Weather in Walthourville, United States

Last updated: June 24, 2025

In September, the average temperature in Walthourville, United States is a warm 26°C (79°F), with a range that can dip to a cool 13°C (55°F) and peak at a sweltering 38°C (101°F). Expect about 135 mm (5.3 in) of precipitation spread over approximately 15 days, contributing to a relatively high average humidity of 83%.

September Temperature in Walthourville

In September in Walthourville, the average temperature is 26°C (79°F). Maximums can reach 38°C (101°F) and minimums can be as low as 13°C (55°F). This makes it an ideal time for travelers seeking warm weather while also being prepared for cooler evenings.

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

The chart illustrates September temperature patterns in Walthourville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Walthourville, September typically has an average temperature of 26°C (79°F), with highs reaching up to 38°C (101°F) and lows dropping to around 13°C (55°F).
JanFebMarAprMayJunJulAugSepOctNovDec535862687579828178725955
Data source: Temperature data for Walthourville 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 Walthourville

In Walthourville in September, the precipitation amount is 135 mm (5.3 in), occurring over a span of 15 days.

September Precipitation Trends in Walthourville

The chart displays monthly precipitation patterns in Walthourville, 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 Walthourville, September typically receives around 135 mm (5.3 inches) of precipitation spread over approximately 15 days.
JanFebMarAprMayJunJulAugSepOctNovDec60846273871331541521358070118
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Walthourville

In Walthourville 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 Walthourville

This chart illustrates the average monthly humidity levels in Walthourville, 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 Walthourville is approximately 83%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%79%78%73%72%74%82%82%83%79%82%85%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Walthourville

In Walthourville 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 Walthourville.

Maximum UV Index Levels in Walthourville for September

The chart shows the monthly maximum UV Index (UVI) for Walthourville 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 Walthourville typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec579101111111110864
Data source: Walthourville 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 Walthourville Compares to Other Months

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

This table compares monthly weather conditions in Walthourville, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather11°C (53°F)60 mm (2.4 inches)84%moderate
February Weather15°C (59°F)84 mm (3.3 inches)79%high
March Weather17°C (62°F)62 mm (2.4 inches)78%very high
April Weather20°C (68°F)73 mm (2.9 inches)72%very high
May Weather24°C (75°F)87 mm (3.4 inches)72%extreme
June Weather26°C (80°F)133 mm (5.2 inches)74%extreme
July Weather28°C (82°F)154 mm (6.1 inches)82%extreme
August Weather27°C (81°F)152 mm (6.0 inches)82%extreme
September Weather26°C (79°F)135 mm (5.3 inches)83%very high
October Weather22°C (72°F)80 mm (3.1 inches)79%very high
November Weather15°C (59°F)70 mm (2.7 inches)82%high
December Weather13°C (55°F)118 mm (4.6 inches)85%moderate

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