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September Weather in Hill City, United States

Last updated: June 24, 2025

In September, the average temperature in Hill City, United States hovers around 22°C (71°F), with a minimum dipping to 3°C (39°F) and a maximum soaring up to 37°C (99°F). Expect 57 mm (2.3 in) of precipitation spread over 5 days, alongside an average humidity level of 73%. Stay prepared for a mix of warmth and occasional showers!

September Temperature in Hill City

In September in Hill City, the average temperature is 22°C (71°F). The maximum can reach 37°C (99°F) and the minimum can be as low as 3°C (39°F). It's essential to pack for both warm days and cooler nights during your travels.

September Weather in Hill City: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Hill City, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hill City, September typically has an average temperature of 22°C (71°F), with highs reaching up to 37°C (99°F) and lows dropping to around 3°C (39°F).
JanFebMarAprMayJunJulAugSepOctNovDec303144526376807671544335
Data source: Temperature data for Hill City 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 Hill City

In Hill City in September, the total precipitation amount is 57 mm (2.3 in) accumulated over 5 days.

September Precipitation Trends in Hill City

The chart displays monthly precipitation patterns in Hill City, 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 Hill City, September typically receives around 57 mm (2.3 inches) of precipitation spread over approximately 5 days.
JanFebMarAprMayJunJulAugSepOctNovDec2118663814668768157601727
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Hill City

In Hill City in September, humidity is 73%. With an average temperature of 22°C (71°F), this humidity feels like a warm blanket enveloping you, making outdoor activities somewhat sticky but still enjoyable for exploring the sights.

September Average Humidity in Hill City

This chart illustrates the average monthly humidity levels in Hill City, 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 Hill City is approximately 73%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec75%78%67%70%82%81%80%80%74%71%79%83%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Hill City

In Hill City 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 Hill City.

Maximum UV Index Levels in Hill City for September

The chart shows the monthly maximum UV Index (UVI) for Hill City 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 Hill City typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3579101111109643
Data source: Hill City 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 Hill City Compares to Other Months

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

This table compares monthly weather conditions in Hill City, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (30°F)21 mm (0.8 inches)74%moderate
February Weather-1°C (31°F)18 mm (0.7 inches)78%moderate
March Weather7°C (44°F)66 mm (2.6 inches)67%high
April Weather11°C (53°F)37 mm (1.5 inches)70%very high
May Weather17°C (63°F)146 mm (5.7 inches)82%very high
June Weather25°C (77°F)68 mm (2.7 inches)81%extreme
July Weather27°C (80°F)76 mm (3.0 inches)80%extreme
August Weather24°C (76°F)81 mm (3.2 inches)80%very high
September Weather22°C (71°F)57 mm (2.3 inches)73%very high
October Weather12°C (54°F)60 mm (2.4 inches)71%high
November Weather6°C (44°F)17 mm (0.7 inches)79%moderate
December Weather2°C (35°F)27 mm (1.1 inches)83%moderate

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