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September Weather in Clifton, United States

Last updated: June 24, 2025

In Clifton, United States, the average temperature in September hovers around 24°C (75°F). Be prepared for a range of temperatures, with minimums dropping to 9°C (49°F) and maximums soaring to 38°C (101°F). Expect 103 mm (4.0 in) of precipitation spread over 8 days, contributing to an average humidity of 70%.

September Temperature in Clifton

In September, in Clifton, the average temperature is 24°C (75°F), with maximums reaching up to 38°C (101°F) and minimums dropping as low as 9°C (49°F). This variation in temperature makes it advisable for travelers to pack a range of clothing to accommodate both warm days and 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 38°C (101°F) and lows dropping to around 9°C (49°F).
JanFebMarAprMayJunJulAugSepOctNovDec424654607077817975645046
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 103 mm (4.0 in) 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 103 mm (4.0 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec11517815816411211612011110312076143
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 70%. With an average temperature of 24°C (75°F), this humidity feels like a warm, heavy blanket wrapping around you, making outdoor activities a bit sluggish and sticky, ideal for leisurely strolls but requiring plenty of hydration.

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 70%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%85%84%81%83%83%80%74%70%73%85%88%
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.
JanFebMarAprMayJunJulAugSepOctNovDec46710111111109753
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 Weather5°C (42°F)115 mm (4.5 inches)86%moderate
February Weather8°C (46°F)178 mm (7.0 inches)85%high
March Weather12°C (55°F)158 mm (6.2 inches)84%high
April Weather16°C (60°F)164 mm (6.5 inches)81%very high
May Weather21°C (71°F)112 mm (4.4 inches)83%extreme
June Weather25°C (78°F)116 mm (4.6 inches)83%extreme
July Weather27°C (81°F)119 mm (4.7 inches)80%extreme
August Weather26°C (79°F)111 mm (4.4 inches)73%very high
September Weather24°C (75°F)103 mm (4.0 inches)70%very high
October Weather18°C (64°F)120 mm (4.7 inches)73%high
November Weather10°C (50°F)76 mm (3.0 inches)85%moderate
December Weather8°C (47°F)143 mm (5.6 inches)88%moderate

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