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September Weather in Rosthern, Canada

Last updated: June 18, 2025

In Rosthern, Canada, the average temperature in September hovers around 11°C (52°F). While the minimum can dip as low as -5°C (23°F), it can also soar to a maximum of 31°C (88°F). Expect 47 mm (1.9 in) of precipitation spread over 8 days, with an average humidity of 77%, creating a uniquely variable climate.

September Temperature in Rosthern

In September in Rosthern, the average temperature is 11°C (52°F), with maximums reaching 31°C (88°F) and minimums dropping as low as -5°C (23°F). This varied climate means travelers should be prepared for both warm and chilly conditions during their visit.

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

The chart illustrates September temperature patterns in Rosthern, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Rosthern, September typically has an average temperature of 11°C (52°F), with highs reaching up to 31°C (88°F) and lows dropping to around -5°C (23°F).
JanFebMarAprMayJunJulAugSepOctNovDec511934526166625237199
Data source: Temperature data for Rosthern 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 Rosthern

In Rosthern in September, the precipitation amount is 47 mm (1.9 in) over a span of 8 days.

September Precipitation Trends in Rosthern

The chart displays monthly precipitation patterns in Rosthern, 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 Rosthern, September typically receives around 47 mm (1.9 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec211325224576723947203314
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Rosthern

In Rosthern in September humidity is 77%. With an average temperature of 11°C (52°F), this humidity feels like a damp chill that can make outdoor activities uncomfortable if not properly dressed, as the moisture in the air amplifies the cold, leaving travelers feeling cooler than expected.

September Average Humidity in Rosthern

This chart illustrates the average monthly humidity levels in Rosthern, 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 Rosthern is approximately 77%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec92%95%92%82%70%64%78%81%77%82%89%95%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Rosthern

In Rosthern 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 Rosthern, you can refer to this Hourly UV Index in Rosthern.

Maximum UV Index Levels in Rosthern for September

The chart shows the monthly maximum UV Index (UVI) for Rosthern 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 Rosthern typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235578876421
Data source: Rosthern 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 Rosthern Compares to Other Months

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

This table compares monthly weather conditions in Rosthern, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-15°C (6°F)21 mm (0.8 inches)92%low
February Weather-17°C (1°F)13 mm (0.5 inches)95%moderate
March Weather-7°C (19°F)25 mm (1.0 inches)92%moderate
April Weather1°C (34°F)22 mm (0.9 inches)82%moderate
May Weather11°C (52°F)45 mm (1.8 inches)70%high
June Weather16°C (61°F)76 mm (3.0 inches)64%very high
July Weather19°C (66°F)72 mm (2.8 inches)78%very high
August Weather17°C (62°F)39 mm (1.5 inches)81%high
September Weather11°C (52°F)47 mm (1.9 inches)77%high
October Weather3°C (37°F)20 mm (0.8 inches)82%moderate
November Weather-7°C (20°F)33 mm (1.3 inches)89%low
December Weather-13°C (9°F)14 mm (0.5 inches)95%low

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