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September Weather in Stephenson, United States

Last updated: June 24, 2025

In September, the average temperature in Stephenson, United States is a pleasant 16°C (62°F). However, be prepared for a temperature range where the minimum can drop to 4°C (40°F) and the maximum can rise to 28°C (83°F). Expect about 88 mm (3.5 in) of precipitation spread over 10 days, contributing to an average humidity of 78%.

September Temperature in Stephenson

In September in Stephenson, the average temperature is 16°C (62°F). The maximum can reach 28°C (83°F), while the minimum can drop as low as 4°C (40°F). This diverse temperature range makes Stephenson an ideal destination for travelers seeking a mix of pleasant daytime warmth and cooler evenings.

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

The chart illustrates September temperature patterns in Stephenson, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Stephenson, September typically has an average temperature of 16°C (62°F), with highs reaching up to 28°C (83°F) and lows dropping to around 4°C (40°F).
JanFebMarAprMayJunJulAugSepOctNovDec202029374962696861493527
Data source: Temperature data for Stephenson 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 Stephenson

In Stephenson in September, the precipitation amount is 88 mm (3.5 in) spread over a duration of 10 days.

September Precipitation Trends in Stephenson

The chart displays monthly precipitation patterns in Stephenson, 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 Stephenson, September typically receives around 88 mm (3.5 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec385561939210689104881106164
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Stephenson

In Stephenson in September, humidity is 78%. With an average temperature of 16°C (62°F), this humidity feels like a warm blanket wrapping around you, making outdoor activities enjoyable yet slightly sticky. Travelers may find the weather pleasantly mild, though they'll appreciate having light, breathable clothing on hand to stay comfortable while exploring.

September Average Humidity in Stephenson

This chart illustrates the average monthly humidity levels in Stephenson, 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 Stephenson is approximately 78%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec89%90%87%84%77%75%75%73%78%84%89%87%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Stephenson

In Stephenson 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 Stephenson.

Maximum UV Index Levels in Stephenson for September

The chart shows the monthly maximum UV Index (UVI) for Stephenson 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 Stephenson typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec245789987532
Data source: Stephenson 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 Stephenson Compares to Other Months

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

This table compares monthly weather conditions in Stephenson, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-6°C (21°F)38 mm (1.5 inches)89%low
February Weather-7°C (20°F)55 mm (2.2 inches)90%moderate
March Weather-2°C (29°F)61 mm (2.4 inches)87%moderate
April Weather3°C (37°F)93 mm (3.6 inches)84%high
May Weather10°C (50°F)92 mm (3.6 inches)77%very high
June Weather17°C (62°F)106 mm (4.2 inches)75%very high
July Weather21°C (70°F)89 mm (3.5 inches)74%very high
August Weather20°C (68°F)104 mm (4.1 inches)73%very high
September Weather16°C (62°F)88 mm (3.5 inches)78%high
October Weather10°C (49°F)110 mm (4.3 inches)84%moderate
November Weather2°C (35°F)61 mm (2.4 inches)89%moderate
December Weather-3°C (27°F)64 mm (2.5 inches)87%low

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