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September Weather in Rupert, United States

Last updated: June 24, 2025

In September, the average temperature in Rupert, United States hovers around 17°C (62°F), with nighttime lows reaching as low as -1°C (30°F) and daytime highs peaking at 32°C (90°F). Expect 84 mm (3.3 in) of precipitation spread over 8 days, contributing to an average humidity level of 72%. Make sure to dress accordingly for the varied conditions!

September Temperature in Rupert

In September in Rupert, the average temperature is 17°C (62°F). Maximums can reach 32°C (90°F), while minimums can drop as low as -1°C (30°F). This variability makes it essential for travelers to pack for both warm and cool conditions.

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

The chart illustrates September temperature patterns in Rupert, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Rupert, September typically has an average temperature of 17°C (62°F), with highs reaching up to 32°C (90°F) and lows dropping to around -1°C (30°F).
JanFebMarAprMayJunJulAugSepOctNovDec222532445765716962513627
Data source: Temperature data for Rupert 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 Rupert

In Rupert in September, the precipitation amount is 84 mm (3.3 in) spread over 8 days.

September Precipitation Trends in Rupert

The chart displays monthly precipitation patterns in Rupert, 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 Rupert, September typically receives around 84 mm (3.3 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec83938112796861209285147109101
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Rupert

In Rupert in September humidity is 72%. With an average temperature of 17°C (62°F), this humidity feels like a warm embrace, making it perfect for leisurely strolls but potentially heavy on the skin, prompting travelers to seek shade during midday excursions.

September Average Humidity in Rupert

This chart illustrates the average monthly humidity levels in Rupert, 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 Rupert is approximately 72%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec90%88%86%84%76%72%67%64%72%81%87%85%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Rupert

In Rupert 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 Rupert.

Maximum UV Index Levels in Rupert for September

The chart shows the monthly maximum UV Index (UVI) for Rupert 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 Rupert typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3468910997632
Data source: Rupert 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 Rupert Compares to Other Months

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

This table compares monthly weather conditions in Rupert, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-5°C (23°F)83 mm (3.3 inches)89%moderate
February Weather-4°C (25°F)93 mm (3.7 inches)88%moderate
March Weather0°C (32°F)81 mm (3.2 inches)86%high
April Weather7°C (44°F)127 mm (5.0 inches)84%very high
May Weather14°C (57°F)96 mm (3.8 inches)76%very high
June Weather19°C (66°F)86 mm (3.4 inches)72%very high
July Weather22°C (71°F)120 mm (4.7 inches)66%very high
August Weather21°C (69°F)92 mm (3.6 inches)64%very high
September Weather17°C (62°F)84 mm (3.3 inches)72%high
October Weather10°C (51°F)147 mm (5.8 inches)81%high
November Weather2°C (36°F)109 mm (4.3 inches)87%moderate
December Weather-3°C (27°F)101 mm (4.0 inches)84%low

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