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September Weather in Weston, United States

Last updated: June 24, 2025

In Weston, United States, the average temperature in September hovers around 20°C (69°F). However, be prepared for a minimum temperature that can dip to 4°C (40°F) and a maximum that can soar to 34°C (93°F). During this month, expect approximately 107 mm (4.2 in) of precipitation spread over 9 days, alongside a notable average humidity of 73%.

September Temperature in Weston

In September in Weston, the average temperature is a pleasant 20°C (69°F). Maximum temperatures can reach as high as 34°C (93°F), while the minimum can dip down to 4°C (40°F). This makes it an ideal time for travelers to enjoy a variety of outdoor activities while being prepared for both warm and cool conditions.

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

The chart illustrates September temperature patterns in Weston, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Weston, September typically has an average temperature of 20°C (69°F), with highs reaching up to 34°C (93°F) and lows dropping to around 4°C (40°F).
JanFebMarAprMayJunJulAugSepOctNovDec344045546470757369594539
Data source: Temperature data for Weston generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Weston

In Weston in September, the precipitation amount is 107 mm (4.2 in), occurring over a span of 9 days.

September Precipitation Trends in Weston

The chart displays monthly precipitation patterns in Weston, 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 Weston, September typically receives around 107 mm (4.2 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec10115711914815715011911610711683131
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Weston

In Weston in September humidity is 73%. With an average temperature of 20°C (69°F), this humidity feels like a warm embrace, making travel slightly sticky but ultimately comfortable as long as you stay hydrated and take breaks in the shade.

September Average Humidity in Weston

This chart illustrates the average monthly humidity levels in Weston, 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 Weston is approximately 73%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%88%88%87%82%84%82%73%74%81%89%86%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Weston

In Weston 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 Weston.

Maximum UV Index Levels in Weston for September

The chart shows the monthly maximum UV Index (UVI) for Weston 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 Weston typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec357910101098753
Data source: Weston 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 Weston Compares to Other Months

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

This table compares monthly weather conditions in Weston, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather1°C (35°F)101 mm (4.0 inches)88%moderate
February Weather4°C (40°F)157 mm (6.2 inches)88%moderate
March Weather7°C (46°F)119 mm (4.7 inches)88%high
April Weather12°C (54°F)148 mm (5.8 inches)86%very high
May Weather18°C (64°F)157 mm (6.2 inches)82%very high
June Weather21°C (71°F)150 mm (5.9 inches)84%very high
July Weather24°C (75°F)119 mm (4.7 inches)82%very high
August Weather23°C (73°F)116 mm (4.6 inches)73%very high
September Weather20°C (69°F)107 mm (4.2 inches)73%very high
October Weather15°C (59°F)116 mm (4.6 inches)81%high
November Weather7°C (45°F)83 mm (3.3 inches)89%moderate
December Weather4°C (40°F)131 mm (5.1 inches)86%moderate

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