September Weather in Cavalier, United States

Last updated: June 24, 2025

In September, the average temperature in Cavalier, United States hovers around 15°C (58°F). However, be prepared for a range of temperatures, as it can dip to a chilling -2°C (29°F) or soar up to a scorching 34°C (93°F). Expect precipitation of approximately 80 mm (3.1 in) over about 9 days, paired with an average humidity level of 73%—perfect for those who enjoy a mild, somewhat humid climate!

September Temperature in Cavalier

In September in Cavalier, the average temperature is 15°C (58°F), with maximums reaching 34°C (93°F) and minimums dropping to as low as -2°C (29°F). It's advisable to pack layers to ensure comfort while exploring the diverse weather conditions during your trip.

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

The chart illustrates September temperature patterns in Cavalier, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Cavalier, September typically has an average temperature of 15°C (58°F), with highs reaching up to 34°C (93°F) and lows dropping to around -2°C (29°F).
JanFebMarAprMayJunJulAugSepOctNovDec9624375567716758422515
Data source: Temperature data for Cavalier 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 Cavalier

In Cavalier in September, the precipitation amount is 80 mm (3.1 in) spread over 9 days.

September Precipitation Trends in Cavalier

The chart displays monthly precipitation patterns in Cavalier, 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 Cavalier, September typically receives around 80 mm (3.1 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec171720264671576380752728
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Cavalier

In Cavalier in September humidity is 73%. With an average temperature of 15°C (58°F), this humidity feels like a damp blanket wrapping around you, making outdoor activities slightly more taxing as you navigate the sticky air.

September Average Humidity in Cavalier

This chart illustrates the average monthly humidity levels in Cavalier, 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 Cavalier is approximately 73%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec92%90%88%81%74%73%74%76%73%76%86%92%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Cavalier

In Cavalier 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 Cavalier.

Maximum UV Index Levels in Cavalier for September

The chart shows the monthly maximum UV Index (UVI) for Cavalier 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 Cavalier typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec245789887422
Data source: Cavalier 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 Cavalier Compares to Other Months

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

This table compares monthly weather conditions in Cavalier, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-13°C (9°F)17 mm (0.7 inches)92%low
February Weather-14°C (6°F)17 mm (0.7 inches)90%moderate
March Weather-4°C (24°F)20 mm (0.8 inches)88%moderate
April Weather3°C (38°F)26 mm (1.0 inches)81%high
May Weather13°C (55°F)46 mm (1.8 inches)74%very high
June Weather20°C (68°F)71 mm (2.8 inches)72%very high
July Weather22°C (71°F)57 mm (2.3 inches)74%very high
August Weather20°C (68°F)63 mm (2.5 inches)76%very high
September Weather15°C (58°F)80 mm (3.1 inches)73%high
October Weather6°C (43°F)74 mm (2.9 inches)76%moderate
November Weather-4°C (25°F)27 mm (1.0 inches)86%low
December Weather-9°C (16°F)28 mm (1.1 inches)91%low

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