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September Weather in Thetford-Mines, Canada

Last updated: June 18, 2025

In September, the average temperature in Thetford-Mines, Canada is a pleasant 14°C (57°F). Expect temperatures to range from a chilly 0°C (32°F) at night to a warm 28°C (82°F) during the day. With 79 mm (3.1 in) of precipitation over 10 days, it’s a good idea to carry an umbrella! Additionally, the average humidity hovers at a comfortable 77%, making for a refreshing atmosphere.

September Temperature in Thetford-Mines

In September in Thetford-Mines, the average temperature is 14°C (57°F). Maximums can reach 28°C (82°F), and minimums can be as low as 0°C (32°F). Travelers should be prepared for a range of temperatures and pack accordingly to enjoy their visit.

September Weather in Thetford-Mines: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Thetford-Mines, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Thetford-Mines, September typically has an average temperature of 14°C (57°F), with highs reaching up to 28°C (82°F) and lows dropping to around 0°C (32°F).
JanFebMarAprMayJunJulAugSepOctNovDec151725385261666557463120
Data source: Temperature data for Thetford-Mines 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 Thetford-Mines

In Thetford-Mines in September, the precipitation amount is 79 mm (3.1 in) over a span of 10 days.

September Precipitation Trends in Thetford-Mines

The chart displays monthly precipitation patterns in Thetford-Mines, 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 Thetford-Mines, September typically receives around 79 mm (3.1 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec9191911271141361321327913411790
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Thetford-Mines

In Thetford-Mines in September, humidity is 77%. With an average temperature of 14°C (57°F), this humidity feels like a heavy blanket wrapping around you, making outdoor exploration feel muggy and leaving you craving the shade while you travel.

September Average Humidity in Thetford-Mines

This chart illustrates the average monthly humidity levels in Thetford-Mines, 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 Thetford-Mines is approximately 77%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%89%85%84%78%72%75%74%77%85%86%85%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Thetford-Mines

In Thetford-Mines 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 Thetford-Mines.

Maximum UV Index Levels in Thetford-Mines for September

The chart shows the monthly maximum UV Index (UVI) for Thetford-Mines 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 Thetford-Mines typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235799887532
Data source: Thetford-Mines 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 Thetford-Mines Compares to Other Months

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

This table compares monthly weather conditions in Thetford-Mines, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-10°C (15°F)91 mm (3.6 inches)91%low
February Weather-8°C (17°F)91 mm (3.6 inches)89%moderate
March Weather-4°C (25°F)91 mm (3.6 inches)85%moderate
April Weather3°C (38°F)127 mm (5.0 inches)84%high
May Weather11°C (52°F)113 mm (4.5 inches)78%very high
June Weather16°C (61°F)136 mm (5.3 inches)72%very high
July Weather19°C (67°F)132 mm (5.2 inches)75%very high
August Weather18°C (65°F)132 mm (5.2 inches)74%very high
September Weather14°C (57°F)79 mm (3.1 inches)77%high
October Weather8°C (46°F)134 mm (5.3 inches)85%moderate
November Weather-1°C (31°F)117 mm (4.6 inches)86%moderate
December Weather-7°C (20°F)90 mm (3.6 inches)85%low

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