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September Weather in Mont-Joli, Canada

Last updated: June 18, 2025

The average temperature in Mont-Joli, Canada during September hovers around 13°C (56°F), with a minimum dipping to 2°C (35°F) and a maximum reaching 25°C (77°F). Expect 87 mm (3.4 in) of precipitation spread over 12 days, contributing to an average humidity level of 85%.

September Temperature in Mont-Joli

In September in Mont-Joli, the average temperature is 13°C (56°F). Maximum temperatures can reach 25°C (77°F), while minimums can dip as low as 2°C (35°F). It's a great time to pack layers for your travels, as the weather can vary significantly throughout the day.

September Weather in Mont-Joli: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Mont-Joli, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Mont-Joli, September typically has an average temperature of 13°C (56°F), with highs reaching up to 25°C (77°F) and lows dropping to around 2°C (35°F).
JanFebMarAprMayJunJulAugSepOctNovDec141523354757646455453221
Data source: Temperature data for Mont-Joli 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 Mont-Joli

In Mont-Joli in September, the precipitation amount is 87 mm (3.4 in) over the course of 12 days.

September Precipitation Trends in Mont-Joli

The chart displays monthly precipitation patterns in Mont-Joli, 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 Mont-Joli, September typically receives around 87 mm (3.4 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec796279101798076778711810784
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Mont-Joli

In Mont-Joli in September humidity is 85%. With an average temperature of 13°C (56°F), this humidity feels like a damp chill that wraps around you, making outdoor activities feel heavier and less enjoyable, as layers of clothing cling to the skin and breath becomes visible in the moist air.

September Average Humidity in Mont-Joli

This chart illustrates the average monthly humidity levels in Mont-Joli, 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 Mont-Joli is approximately 85%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec94%93%91%89%82%74%80%83%85%88%89%94%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Mont-Joli

In Mont-Joli 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 Mont-Joli, you can refer to this Hourly UV Index in Mont-Joli.

Maximum UV Index Levels in Mont-Joli for September

The chart shows the monthly maximum UV Index (UVI) for Mont-Joli 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 Mont-Joli typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235789886421
Data source: Mont-Joli 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 Mont-Joli Compares to Other Months

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

This table compares monthly weather conditions in Mont-Joli, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-10°C (14°F)79 mm (3.1 inches)94%low
February Weather-10°C (15°F)62 mm (2.5 inches)93%moderate
March Weather-5°C (24°F)79 mm (3.1 inches)91%moderate
April Weather2°C (35°F)101 mm (4.0 inches)89%high
May Weather8°C (47°F)79 mm (3.1 inches)82%very high
June Weather14°C (57°F)80 mm (3.1 inches)74%very high
July Weather18°C (64°F)76 mm (3.0 inches)80%very high
August Weather18°C (64°F)76 mm (3.0 inches)83%very high
September Weather13°C (56°F)87 mm (3.4 inches)85%high
October Weather7°C (45°F)118 mm (4.7 inches)88%moderate
November Weather0°C (33°F)107 mm (4.2 inches)89%low
December Weather-6°C (21°F)84 mm (3.3 inches)94%low

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