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September Weather in Edmundston, Canada

Last updated: June 18, 2025

In September, the average temperature in Edmundston, Canada is a pleasant 13°C (56°F). However, temperatures can vary significantly, dipping as low as -2°C (28°F) and soaring up to 28°C (82°F). Expect about 100 mm (3.9 in) of precipitation over 11 days, contributing to an average humidity of around 85%.

September Temperature in Edmundston

In September in Edmundston, the average temperature is 13°C (56°F). Maximum temperatures can reach 28°C (82°F), while minimums can drop as low as -2°C (28°F). It's a great time to pack layers for your travels, as you'll experience a range of temperatures throughout the day.

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

The chart illustrates September temperature patterns in Edmundston, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Edmundston, September typically has an average temperature of 13°C (56°F), with highs reaching up to 28°C (82°F) and lows dropping to around -2°C (28°F).
JanFebMarAprMayJunJulAugSepOctNovDec131524375060666455443018
Data source: Temperature data for Edmundston 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 Edmundston

In Edmundston in September, the precipitation amount is 100 mm (3.9 in) over the course of 11 days.

September Precipitation Trends in Edmundston

The chart displays monthly precipitation patterns in Edmundston, 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 Edmundston, September typically receives around 100 mm (3.9 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec89747711997929384100121119102
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Edmundston

In Edmundston 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 Edmundston

This chart illustrates the average monthly humidity levels in Edmundston, 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 Edmundston is approximately 85%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec93%92%90%87%82%77%82%83%85%87%88%90%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Edmundston

In Edmundston 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 Edmundston.

Maximum UV Index Levels in Edmundston for September

The chart shows the monthly maximum UV Index (UVI) for Edmundston 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 Edmundston typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2357810887432
Data source: Edmundston 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 Edmundston Compares to Other Months

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

This table compares monthly weather conditions in Edmundston, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-11°C (13°F)89 mm (3.5 inches)93%low
February Weather-9°C (15°F)74 mm (2.9 inches)92%moderate
March Weather-5°C (24°F)77 mm (3.0 inches)90%moderate
April Weather3°C (37°F)119 mm (4.7 inches)87%high
May Weather10°C (51°F)97 mm (3.8 inches)82%very high
June Weather15°C (60°F)92 mm (3.6 inches)77%very high
July Weather19°C (66°F)93 mm (3.7 inches)81%very high
August Weather18°C (65°F)84 mm (3.3 inches)83%very high
September Weather13°C (56°F)100 mm (3.9 inches)85%high
October Weather7°C (45°F)121 mm (4.7 inches)87%moderate
November Weather-1°C (31°F)119 mm (4.7 inches)87%moderate
December Weather-8°C (18°F)102 mm (4.0 inches)90%low

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