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September Weather in Glouster, United States

Last updated: June 24, 2025

In September, the average temperature in Glouster, United States is a pleasant 21°C (70°F). However, be prepared for fluctuations: temperatures can dip as low as 5°C (42°F) and soar up to 37°C (98°F). Rainfall is common, with an average precipitation of 105 mm (4.1 in) over 9 days, and the atmosphere is often moist, boasting an average humidity of 73%.

September Temperature in Glouster

In September in Glouster, the average temperature is 21°C (70°F). Maximum temperatures can reach 37°C (98°F), while minimums can dip as low as 5°C (42°F). Travelers should be prepared for a wide range of temperatures, so it's advisable to pack both lightweight clothing and warmer layers for the cooler evenings.

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

The chart illustrates September temperature patterns in Glouster, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Glouster, September typically has an average temperature of 21°C (70°F), with highs reaching up to 37°C (98°F) and lows dropping to around 5°C (42°F).
JanFebMarAprMayJunJulAugSepOctNovDec333744546472767470594338
Data source: Temperature data for Glouster 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 Glouster

In Glouster in September, the total precipitation amount reaches 105 mm (4.1 in) over the course of 9 days.

September Precipitation Trends in Glouster

The chart displays monthly precipitation patterns in Glouster, 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 Glouster, September typically receives around 105 mm (4.1 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec8711611913913616112611910510585110
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Glouster

In Glouster in September, humidity is 73%. With an average temperature of 21°C (70°F), this humidity feels like a warm embrace that can make outdoor activities feel sweltering, so it's essential to stay hydrated and take breaks in the shade while exploring.

September Average Humidity in Glouster

This chart illustrates the average monthly humidity levels in Glouster, 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 Glouster is approximately 73%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%88%88%87%82%84%82%73%74%81%89%86%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Glouster

In Glouster 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 Glouster.

Maximum UV Index Levels in Glouster for September

The chart shows the monthly maximum UV Index (UVI) for Glouster 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 Glouster typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec357910101098643
Data source: Glouster 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 Glouster Compares to Other Months

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

This table compares monthly weather conditions in Glouster, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather1°C (33°F)87 mm (3.4 inches)88%moderate
February Weather3°C (37°F)116 mm (4.6 inches)88%moderate
March Weather7°C (44°F)119 mm (4.7 inches)88%high
April Weather12°C (54°F)139 mm (5.5 inches)86%very high
May Weather18°C (65°F)136 mm (5.4 inches)82%very high
June Weather22°C (72°F)161 mm (6.3 inches)84%very high
July Weather25°C (76°F)125 mm (4.9 inches)82%very high
August Weather23°C (74°F)119 mm (4.7 inches)73%very high
September Weather21°C (70°F)105 mm (4.1 inches)73%very high
October Weather15°C (59°F)105 mm (4.1 inches)81%high
November Weather6°C (44°F)84 mm (3.3 inches)89%moderate
December Weather3°C (38°F)110 mm (4.3 inches)86%moderate

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