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September Weather in Downs, United States

Last updated: June 24, 2025

In September, the average temperature in Downs, United States hovers around 21°C (70°F), offering a pleasant climate for outdoor activities. However, temperatures can vary significantly, with lows of 5°C (41°F) and highs of 35°C (95°F). Expect 63 mm (2.5 in) of rainfall spread over about 7 days, contributing to an average humidity level of 80%, creating a tropical feel throughout the month.

September Temperature in Downs

In September in Downs, the average temperature is 21°C (70°F). Maximums can reach 35°C (95°F), while minimums can drop to 5°C (41°F). This variability in temperature makes it essential for travelers to pack both lightweight clothing for the warm days and warmer layers for the cooler evenings.

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

The chart illustrates September temperature patterns in Downs, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Downs, September typically has an average temperature of 21°C (70°F), with highs reaching up to 35°C (95°F) and lows dropping to around 5°C (41°F).
JanFebMarAprMayJunJulAugSepOctNovDec273042516474777470564035
Data source: Temperature data for Downs 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 Downs

In Downs in September, the precipitation amount is 63 mm (2.5 in) over a span of 7 days.

September Precipitation Trends in Downs

The chart displays monthly precipitation patterns in Downs, 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 Downs, September typically receives around 63 mm (2.5 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec65701141161551139699631246354
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Downs

In Downs in September humidity is 80%. With an average temperature of 21°C (70°F), this humidity feels like a warm, enveloping blanket that can make even short walks feel draining, urging travelers to seek shade or a cool drink frequently.

September Average Humidity in Downs

This chart illustrates the average monthly humidity levels in Downs, 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 Downs is approximately 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%83%84%85%79%82%80%81%80%82%88%84%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Downs

In Downs 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 Downs.

Maximum UV Index Levels in Downs for September

The chart shows the monthly maximum UV Index (UVI) for Downs 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 Downs typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec366910111098642
Data source: Downs 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 Downs Compares to Other Months

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

This table compares monthly weather conditions in Downs, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-3°C (27°F)65 mm (2.6 inches)82%moderate
February Weather-1°C (30°F)70 mm (2.8 inches)83%high
March Weather5°C (42°F)113 mm (4.5 inches)84%high
April Weather11°C (51°F)116 mm (4.6 inches)85%very high
May Weather18°C (64°F)155 mm (6.1 inches)79%very high
June Weather23°C (74°F)112 mm (4.4 inches)82%extreme
July Weather25°C (77°F)95 mm (3.8 inches)80%very high
August Weather23°C (74°F)99 mm (3.9 inches)81%very high
September Weather21°C (70°F)63 mm (2.5 inches)80%very high
October Weather13°C (57°F)123 mm (4.9 inches)82%high
November Weather5°C (41°F)63 mm (2.5 inches)88%moderate
December Weather1°C (35°F)54 mm (2.1 inches)84%low

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