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September Weather in Clifton, United States

Last updated: June 24, 2025

In September, the average temperature in Clifton, United States is a pleasant 21°C (69°F). However, be prepared for a range of temperatures, with lows of 5°C (41°F) and highs reaching 35°C (94°F). This month typically sees 76 mm (3.0 in) of precipitation spread across 8 days, contributing to an average humidity of 80%. Enjoy the diverse weather whilst exploring this charming destination!

September Temperature in Clifton

In September in Clifton, the average temperature is a comfortable 21°C (69°F). Maximum temperatures can soar to 35°C (94°F), while the minimum can drop to a chilly 5°C (41°F). Be prepared for a mix of warm days and cool nights during your travels.

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

The chart illustrates September temperature patterns in Clifton, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Clifton, September typically has an average temperature of 21°C (69°F), with highs reaching up to 35°C (94°F) and lows dropping to around 5°C (41°F).
JanFebMarAprMayJunJulAugSepOctNovDec272941506373767469564034
Data source: Temperature data for Clifton 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 Clifton

In Clifton in September, the precipitation amount is 76 mm (3.0 in) spread over a duration of 8 days.

September Precipitation Trends in Clifton

The chart displays monthly precipitation patterns in Clifton, 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 Clifton, September typically receives around 76 mm (3.0 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec6872971201621159292761316258
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Clifton

In Clifton in September, humidity is 80%. With an average temperature of 21°C (69°F), this humidity feels like a warm, sticky embrace, making outdoor activities a bit challenging for travelers as the air becomes heavy and can lead to fatigue while sightseeing.

September Average Humidity in Clifton

This chart illustrates the average monthly humidity levels in Clifton, 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 Clifton 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 Clifton

In Clifton 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 Clifton.

Maximum UV Index Levels in Clifton for September

The chart shows the monthly maximum UV Index (UVI) for Clifton 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 Clifton typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356810101098642
Data source: Clifton 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 Clifton Compares to Other Months

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

This table compares monthly weather conditions in Clifton, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-3°C (27°F)68 mm (2.7 inches)82%moderate
February Weather-2°C (29°F)72 mm (2.8 inches)83%moderate
March Weather5°C (41°F)97 mm (3.8 inches)84%high
April Weather10°C (51°F)120 mm (4.7 inches)85%very high
May Weather17°C (63°F)162 mm (6.4 inches)79%very high
June Weather23°C (74°F)115 mm (4.5 inches)82%very high
July Weather25°C (76°F)92 mm (3.6 inches)80%very high
August Weather23°C (74°F)92 mm (3.6 inches)81%very high
September Weather21°C (69°F)76 mm (3.0 inches)80%very high
October Weather13°C (56°F)131 mm (5.2 inches)82%high
November Weather5°C (41°F)62 mm (2.4 inches)88%moderate
December Weather1°C (35°F)58 mm (2.3 inches)84%low

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