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September Weather in Clifton, United States

Last updated: June 24, 2025

In September, the average temperature in Clifton, United States hovers around a pleasant 24°C (75°F). However, you can expect temperatures to dip as low as 9°C (49°F) and rise up to a soaring 35°C (96°F). Be prepared for some rain, with 135 mm (5.3 in) of precipitation spread over 9 days. With an average humidity of 75%, it’s a good idea to stay hydrated and enjoy the vibrant atmosphere!

September Temperature in Clifton

In September in Clifton, the average temperature is 24°C (75°F), with maximums reaching up to 35°C (96°F) and minimums dipping as low as 9°C (49°F). This variability makes it an ideal destination for travelers seeking a warm climate with the option for cooler evenings.

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 24°C (75°F), with highs reaching up to 35°C (96°F) and lows dropping to around 9°C (49°F).
JanFebMarAprMayJunJulAugSepOctNovDec444954627177817975655147
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 135 mm (5.3 in) spread over 9 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 135 mm (5.3 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec9212094118120849311713510693121
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 75%. With average temperature 24°C (75°F), this humidity feels like a thick blanket wrapping around you, making outdoor activities feel especially stifling and leaving you yearning for cool breezes and refreshingly cold drinks.

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 75%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%85%84%82%83%82%80%74%75%79%87%87%
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 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 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 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec46810101110109853
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 Weather7°C (44°F)92 mm (3.6 inches)86%moderate
February Weather10°C (50°F)120 mm (4.7 inches)85%high
March Weather12°C (55°F)94 mm (3.7 inches)84%very high
April Weather17°C (62°F)118 mm (4.6 inches)82%very high
May Weather22°C (71°F)120 mm (4.7 inches)83%very high
June Weather25°C (77°F)84 mm (3.3 inches)82%extreme
July Weather27°C (81°F)93 mm (3.6 inches)80%very high
August Weather26°C (79°F)117 mm (4.6 inches)74%very high
September Weather24°C (75°F)135 mm (5.3 inches)75%very high
October Weather18°C (65°F)106 mm (4.2 inches)79%very high
November Weather11°C (52°F)93 mm (3.6 inches)87%moderate
December Weather8°C (47°F)121 mm (4.8 inches)87%moderate

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