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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 24°C (75°F). Visitors can expect a range that dips to a minimum of 9°C (49°F) and peaks at a sizzling 37°C (99°F). With an average humidity of 66%, the climate can feel quite warm and inviting. Rainfall measures around 33 mm (1.3 in) over approximately 4 days, adding just a hint of refreshment to the otherwise sunny days.

September Temperature in Clifton

In September, in Clifton, the average temperature is 24°C (75°F), with maximums reaching up to 37°C (99°F) and minimums dropping as low as 9°C (49°F). Be prepared for a mix of warm days and cooler nights when planning your travel.

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 37°C (99°F) and lows dropping to around 9°C (49°F).
JanFebMarAprMayJunJulAugSepOctNovDec424654637181828075645444
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 33 mm (1.3 in) over a span of 4 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 33 mm (1.3 inches) of precipitation spread over approximately 4 days.
JanFebMarAprMayJunJulAugSepOctNovDec313823335633133182528
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 24°C (75°F), this humidity feels like a warm blanket enveloping you, making it feel a bit heavier and stickier while traveling, which might slow down your pace but offers a unique ambiance to explore.

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.
JanFebMarAprMayJunJulAugSepOctNovDec81%82%68%55%45%37%43%53%66%72%81%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 reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, 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 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec5710111213121211865
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 Weather6°C (43°F)31 mm (1.2 inches)81%moderate
February Weather8°C (46°F)38 mm (1.5 inches)82%high
March Weather12°C (54°F)23 mm (0.9 inches)68%very high
April Weather17°C (64°F)3 mm (0.1 inches)55%extreme
May Weather22°C (71°F)3 mm (0.1 inches)45%extreme
June Weather27°C (82°F)5 mm (0.2 inches)37%extreme
July Weather28°C (82°F)63 mm (2.5 inches)43%extreme
August Weather27°C (81°F)31 mm (1.2 inches)53%extreme
September Weather24°C (75°F)33 mm (1.3 inches)66%extreme
October Weather18°C (64°F)18 mm (0.7 inches)72%very high
November Weather12°C (54°F)25 mm (1.0 inches)81%high
December Weather7°C (44°F)28 mm (1.1 inches)84%moderate

Compare Clifton's Climate with Cities Worldwide