September Weather in Rocky Mountain House, Canada

Last updated: June 18, 2025

In September, the average temperature in Rocky Mountain House, Canada hovers around 10°C (49°F). However, be prepared for a temperature range that can drop to a chilly -8°C (18°F) or soar up to a warm 30°C (86°F). Expect around 71 mm (2.8 in) of precipitation over 11 days, contributing to an average humidity of 78%. Whether you're bundling up or enjoying mild days, make sure to pack accordingly!

September Temperature in Rocky Mountain House

In September in Rocky Mountain House, the average temperature is 10°C (49°F). Maximum temperatures can reach 30°C (86°F), while minimums can drop as low as -8°C (18°F). Travelers should be prepared for a wide range of temperatures and pack accordingly for their trip.

September Weather in Rocky Mountain House: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Rocky Mountain House, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Rocky Mountain House, September typically has an average temperature of 10°C (49°F), with highs reaching up to 30°C (86°F) and lows dropping to around -8°C (18°F).
JanFebMarAprMayJunJulAugSepOctNovDec181225354956605949372719
Data source: Temperature data for Rocky Mountain House 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 Rocky Mountain House

In Rocky Mountain House in September, the precipitation amount is 71 mm (2.8 in) distributed over 11 days.

September Precipitation Trends in Rocky Mountain House

The chart displays monthly precipitation patterns in Rocky Mountain House, 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 Rocky Mountain House, September typically receives around 71 mm (2.8 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec12263347701081127271373728
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Rocky Mountain House

In Rocky Mountain House in September humidity is 78%. With average temperature 10°C (49°F), this humidity feels like a chilly dampness that clings to your skin, making outdoor activities less enjoyable and requiring extra layers to stay comfortable while exploring.

September Average Humidity in Rocky Mountain House

This chart illustrates the average monthly humidity levels in Rocky Mountain House, 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 Rocky Mountain House is approximately 78%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec92%93%89%85%82%82%84%82%78%84%89%93%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Rocky Mountain House

In Rocky Mountain House in September, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Rocky Mountain House, you can refer to this Hourly UV Index in Rocky Mountain House.

Maximum UV Index Levels in Rocky Mountain House for September

The chart shows the monthly maximum UV Index (UVI) for Rocky Mountain House 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 Rocky Mountain House typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec234678886421
Data source: Rocky Mountain House 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 Rocky Mountain House Compares to Other Months

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

This table compares monthly weather conditions in Rocky Mountain House, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-8°C (18°F)12 mm (0.5 inches)92%low
February Weather-11°C (13°F)26 mm (1.0 inches)93%moderate
March Weather-4°C (25°F)33 mm (1.3 inches)89%moderate
April Weather2°C (35°F)47 mm (1.8 inches)85%high
May Weather9°C (49°F)70 mm (2.8 inches)82%high
June Weather14°C (57°F)108 mm (4.3 inches)82%very high
July Weather16°C (60°F)112 mm (4.4 inches)84%very high
August Weather15°C (59°F)72 mm (2.8 inches)82%very high
September Weather10°C (49°F)71 mm (2.8 inches)78%high
October Weather3°C (37°F)37 mm (1.4 inches)84%moderate
November Weather-3°C (28°F)37 mm (1.4 inches)89%low
December Weather-7°C (19°F)28 mm (1.1 inches)93%low

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