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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 27°C (80°F). Expect a wide range, with minimums dipping to 10°C (50°F) and maximums peaking at 39°C (102°F). Rainfall during this month totals approximately 87 mm (3.4 in), spread over about 8 days. The atmosphere is notably humid, with an average humidity of 66%, adding to the region's unique climate experience.

September Temperature in Clifton

In September in Clifton, the average temperature is 27°C (80°F), with maximums reaching 39°C (102°F) and minimums dropping as low as 10°C (50°F). It's advisable to pack for both warm days and cooler evenings when traveling during this time.

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 27°C (80°F), with highs reaching up to 39°C (102°F) and lows dropping to around 10°C (50°F).
JanFebMarAprMayJunJulAugSepOctNovDec495162667582868680695853
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 87 mm (3.4 in), which occurs over a span 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 87 mm (3.4 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec54788193181765290871344453
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 66%. With an average temperature of 27°C (80°F), this humidity feels like a warm, sticky embrace, making travel a bit more challenging as you may find yourself perspiring more quickly while exploring, but it's also perfect for a refreshing dip in nearby waters.

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 66%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec78%78%77%78%82%78%69%63%66%73%84%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 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 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 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec478101112121110864
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 Weather9°C (49°F)54 mm (2.1 inches)78%moderate
February Weather10°C (51°F)78 mm (3.1 inches)78%high
March Weather17°C (62°F)81 mm (3.2 inches)77%very high
April Weather19°C (67°F)92 mm (3.6 inches)78%very high
May Weather24°C (75°F)181 mm (7.1 inches)82%extreme
June Weather28°C (82°F)76 mm (3.0 inches)78%extreme
July Weather30°C (86°F)52 mm (2.0 inches)69%extreme
August Weather30°C (86°F)90 mm (3.6 inches)63%extreme
September Weather27°C (80°F)87 mm (3.4 inches)66%very high
October Weather21°C (69°F)134 mm (5.3 inches)73%very high
November Weather14°C (58°F)44 mm (1.7 inches)84%high
December Weather12°C (53°F)53 mm (2.1 inches)87%moderate

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