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September Weather in Stevenson, United States

Last updated: June 24, 2025

In Stevenson, United States, the average temperature in September hovers around 15°C (60°F). Expect temperature fluctuations, with a minimum of 3°C (37°F) and a maximum reaching up to 35°C (96°F). During this month, anticipate about 103 mm (4.0 in) of precipitation spread over 9 days, contributing to an average humidity level of 59%.

September Temperature in Stevenson

In September in Stevenson, the average temperature is 15°C (60°F). Maximums can reach 35°C (96°F), and minimums can drop as low as 3°C (37°F). Pack accordingly to enjoy a range of weather while exploring this vibrant destination.

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

The chart illustrates September temperature patterns in Stevenson, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Stevenson, September typically has an average temperature of 15°C (60°F), with highs reaching up to 35°C (96°F) and lows dropping to around 3°C (37°F).
JanFebMarAprMayJunJulAugSepOctNovDec353540465459656659484136
Data source: Temperature data for Stevenson 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 Stevenson

In Stevenson in September, the precipitation amount is 103 mm (4.0 in) over the course of 9 days.

September Precipitation Trends in Stevenson

The chart displays monthly precipitation patterns in Stevenson, 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 Stevenson, September typically receives around 103 mm (4.0 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec2753011941708672913103201265302
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Stevenson

In Stevenson in September, humidity is 59%. With an average temperature of 15°C (60°F), this humidity feels like a refreshing embrace, perfect for exploring the vibrant streets and enjoying the local sights without feeling too fatigued.

September Average Humidity in Stevenson

This chart illustrates the average monthly humidity levels in Stevenson, 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 Stevenson is approximately 59%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%87%86%85%80%82%79%63%59%78%88%88%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Stevenson

In Stevenson 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 Stevenson.

Maximum UV Index Levels in Stevenson for September

The chart shows the monthly maximum UV Index (UVI) for Stevenson 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 Stevenson typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec24679101098532
Data source: Stevenson 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 Stevenson Compares to Other Months

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

This table compares monthly weather conditions in Stevenson, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather2°C (36°F)275 mm (10.8 inches)86%low
February Weather2°C (35°F)301 mm (11.8 inches)87%moderate
March Weather4°C (40°F)194 mm (7.6 inches)86%high
April Weather8°C (46°F)170 mm (6.7 inches)85%high
May Weather12°C (54°F)86 mm (3.4 inches)80%very high
June Weather15°C (60°F)72 mm (2.8 inches)82%very high
July Weather19°C (66°F)9 mm (0.4 inches)78%very high
August Weather19°C (67°F)13 mm (0.5 inches)62%very high
September Weather15°C (60°F)103 mm (4.0 inches)59%very high
October Weather9°C (48°F)201 mm (7.9 inches)78%moderate
November Weather5°C (41°F)265 mm (10.4 inches)88%moderate
December Weather2°C (36°F)302 mm (11.9 inches)88%low

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