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September Weather in Westernport, United States

Last updated: June 24, 2025

In Westernport, United States, the average temperature in September hovers around 19°C (66°F). However, temperatures can vary significantly, with a minimum of 1°C (35°F) and a maximum reaching up to 33°C (92°F). Expect about 124 mm (4.9 in) of precipitation over 9 days, contributing to an average humidity of 68% for the month.

September Temperature in Westernport

In September in Westernport, the average temperature is 19°C (66°F), with a maximum that can reach 33°C (92°F) and a minimum that can drop as low as 1°C (35°F). This diverse temperature range means travelers should be prepared for both warm days and cooler evenings when visiting.

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

The chart illustrates September temperature patterns in Westernport, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Westernport, September typically has an average temperature of 19°C (66°F), with highs reaching up to 33°C (92°F) and lows dropping to around 1°C (35°F).
JanFebMarAprMayJunJulAugSepOctNovDec313641516169747266564136
Data source: Temperature data for Westernport 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 Westernport

In Westernport in September, the precipitation amount is 124 mm (4.9 in) over the course of 9 days.

September Precipitation Trends in Westernport

The chart displays monthly precipitation patterns in Westernport, 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 Westernport, September typically receives around 124 mm (4.9 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec711078711513211485981241076496
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Westernport

In Westernport in September humidity is 68%. With an average temperature of 19°C (66°F), this humidity feels like a warm embrace, creating a sticky atmosphere that can be a bit uncomfortable for traveling.

September Average Humidity in Westernport

This chart illustrates the average monthly humidity levels in Westernport, 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 Westernport is approximately 68%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%86%86%84%78%79%70%59%68%80%87%85%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Westernport

In Westernport in September, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Westernport.

Maximum UV Index Levels in Westernport for September

The chart shows the monthly maximum UV Index (UVI) for Westernport 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 Westernport typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec35710101010108753
Data source: Westernport 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 Westernport Compares to Other Months

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

This table compares monthly weather conditions in Westernport, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (31°F)71 mm (2.8 inches)86%moderate
February Weather2°C (36°F)107 mm (4.2 inches)86%moderate
March Weather5°C (41°F)87 mm (3.4 inches)86%high
April Weather10°C (51°F)115 mm (4.5 inches)84%very high
May Weather16°C (61°F)132 mm (5.2 inches)78%very high
June Weather20°C (69°F)114 mm (4.5 inches)79%very high
July Weather23°C (74°F)85 mm (3.3 inches)70%very high
August Weather22°C (72°F)98 mm (3.9 inches)59%very high
September Weather19°C (66°F)124 mm (4.9 inches)68%very high
October Weather13°C (56°F)106 mm (4.2 inches)80%high
November Weather5°C (42°F)64 mm (2.5 inches)86%moderate
December Weather2°C (36°F)96 mm (3.8 inches)85%moderate

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