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September Weather in Scranton, United States

Last updated: June 24, 2025

In September, the average temperature in Scranton, United States hovers around 25°C (77°F), offering a pleasant climate. Expect a minimum chill of 10°C (50°F) and occasional peaks of up to 36°C (97°F). Be prepared for an average of 149 mm (5.9 in) of precipitation over 9 days, and a humid environment with an average humidity of 81%.

September Temperature in Scranton

In September in Scranton, the average temperature is 25°C (77°F). The maximum can reach 36°C (97°F), and the minimum can be as low as 10°C (50°F). This makes it an ideal time for traveling, as the warm days are perfect for outdoor activities while cooler evenings allow for comfortable exploration.

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

The chart illustrates September temperature patterns in Scranton, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Scranton, September typically has an average temperature of 25°C (77°F), with highs reaching up to 36°C (97°F) and lows dropping to around 10°C (50°F).
JanFebMarAprMayJunJulAugSepOctNovDec485457657478818077695551
Data source: Temperature data for Scranton 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 Scranton

In Scranton in September, the total precipitation amount is 149 mm (5.9 in) over a span of 9 days.

September Precipitation Trends in Scranton

The chart displays monthly precipitation patterns in Scranton, 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 Scranton, September typically receives around 149 mm (5.9 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec749170911081361521621495376136
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Scranton

In Scranton in September, humidity is 81%. With an average temperature of 25°C (77°F), this humidity feels like walking through a warm, thick blanket, making traveling quite challenging as you may feel sticky and sluggish, requiring frequent breaks to stay refreshed and hydrated.

September Average Humidity in Scranton

This chart illustrates the average monthly humidity levels in Scranton, 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 Scranton is approximately 81%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%80%79%78%78%78%82%81%81%78%82%84%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Scranton

In Scranton 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 Scranton.

Maximum UV Index Levels in Scranton for September

The chart shows the monthly maximum UV Index (UVI) for Scranton 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 Scranton typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec47810111111109864
Data source: Scranton 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 Scranton Compares to Other Months

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

This table compares monthly weather conditions in Scranton, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather9°C (48°F)74 mm (2.9 inches)83%moderate
February Weather12°C (54°F)91 mm (3.6 inches)79%high
March Weather14°C (58°F)70 mm (2.7 inches)79%very high
April Weather18°C (65°F)91 mm (3.6 inches)78%very high
May Weather23°C (74°F)108 mm (4.3 inches)78%extreme
June Weather26°C (78°F)136 mm (5.4 inches)78%extreme
July Weather27°C (81°F)152 mm (6.0 inches)82%extreme
August Weather27°C (81°F)162 mm (6.4 inches)81%very high
September Weather25°C (77°F)149 mm (5.9 inches)81%very high
October Weather20°C (69°F)53 mm (2.1 inches)78%very high
November Weather13°C (55°F)76 mm (3.0 inches)82%high
December Weather10°C (51°F)136 mm (5.3 inches)84%moderate

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