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September Weather in Newport, United States

Last updated: June 24, 2025

In September, the average temperature in Newport, United States hovers around 16°C (61°F). Expect a wide range, with minimum temperatures dipping to 1°C (34°F) and maximums soaring to 34°C (93°F). Prepare for some rainfall, as precipitation can reach 44 mm (1.7 in) over 6 days, while the average humidity lingers at a comfortable 71%.

September Temperature in Newport

In September in Newport, the average temperature is 16°C (61°F). The maximum can reach 34°C (93°F), while the minimum can be as low as 1°C (34°F). It's advisable to pack for both warm days and cool nights while traveling during this month.

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

The chart illustrates September temperature patterns in Newport, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Newport, September typically has an average temperature of 16°C (61°F), with highs reaching up to 34°C (93°F) and lows dropping to around 1°C (34°F).
JanFebMarAprMayJunJulAugSepOctNovDec292737445664737260463731
Data source: Temperature data for Newport 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 Newport

In Newport in September, the total precipitation amount is 44 mm (1.7 in) spread over 6 days.

September Precipitation Trends in Newport

The chart displays monthly precipitation patterns in Newport, 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 Newport, September typically receives around 44 mm (1.7 inches) of precipitation spread over approximately 6 days.
JanFebMarAprMayJunJulAugSepOctNovDec1018676745532722447796109
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Newport

In Newport in September humidity is 71%. With an average temperature of 16°C (61°F), this humidity feels like walking through a warm, damp blanket, making travel slightly uncomfortable but still enjoyable for those who appreciate mild weather.

September Average Humidity in Newport

This chart illustrates the average monthly humidity levels in Newport, 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 Newport is approximately 71%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec95%93%91%88%83%80%82%71%71%85%90%96%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Newport

In Newport in September, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Newport.

Maximum UV Index Levels in Newport for September

The chart shows the monthly maximum UV Index (UVI) for Newport 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 Newport typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235689997432
Data source: Newport 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 Newport Compares to Other Months

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

This table compares monthly weather conditions in Newport, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (29°F)101 mm (4.0 inches)95%low
February Weather-3°C (27°F)86 mm (3.4 inches)93%moderate
March Weather3°C (37°F)76 mm (3.0 inches)91%moderate
April Weather7°C (45°F)74 mm (2.9 inches)88%high
May Weather13°C (56°F)55 mm (2.2 inches)83%very high
June Weather18°C (64°F)32 mm (1.2 inches)80%very high
July Weather23°C (73°F)7 mm (0.3 inches)82%very high
August Weather22°C (72°F)22 mm (0.9 inches)71%very high
September Weather16°C (61°F)44 mm (1.7 inches)71%high
October Weather8°C (46°F)77 mm (3.0 inches)85%moderate
November Weather3°C (37°F)96 mm (3.8 inches)90%moderate
December Weather-1°C (31°F)109 mm (4.3 inches)96%low

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