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September Weather in Iroquois Falls, Canada

Last updated: June 18, 2025

In Iroquois Falls, Canada, the average temperature in September is a mild 12°C (54°F). During this time, temperatures can dip as low as -2°C (29°F) or soar up to a warm 30°C (86°F). Prepare for 112 mm (4.4 in) of precipitation over 14 days, and don't forget your umbrella, as the average humidity hovers around a sticky 85%.

September Temperature in Iroquois Falls

In September in Iroquois Falls, the average temperature is 12°C (54°F), with maximums reaching 30°C (86°F) and minimums dropping to as low as -2°C (29°F). This makes it a great time to visit for those who enjoy mild weather, but be sure to pack for varying temperatures!

September Weather in Iroquois Falls: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Iroquois Falls, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Iroquois Falls, September typically has an average temperature of 12°C (54°F), with highs reaching up to 30°C (86°F) and lows dropping to around -2°C (29°F).
JanFebMarAprMayJunJulAugSepOctNovDec6719334960666354412412
Data source: Temperature data for Iroquois Falls 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 Iroquois Falls

In Iroquois Falls in September, the precipitation amount is 112 mm (4.4 in) spread over 14 days.

September Precipitation Trends in Iroquois Falls

The chart displays monthly precipitation patterns in Iroquois Falls, 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 Iroquois Falls, September typically receives around 112 mm (4.4 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec375148708111187871121107559
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Iroquois Falls

In Iroquois Falls in September, humidity is 85%. With an average temperature of 12°C (54°F), this humidity feels like a heavy blanket wrapping around you, making traveling not only uncomfortable but also exhausting as the damp air clings to your skin and slows your movements.

September Average Humidity in Iroquois Falls

This chart illustrates the average monthly humidity levels in Iroquois Falls, 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 Iroquois Falls is approximately 85%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec96%95%92%88%76%74%80%82%85%89%89%96%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Iroquois Falls

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

Maximum UV Index Levels in Iroquois Falls for September

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

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

This table compares monthly weather conditions in Iroquois Falls, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-15°C (6°F)37 mm (1.5 inches)96%low
February Weather-14°C (7°F)51 mm (2.0 inches)95%moderate
March Weather-7°C (19°F)48 mm (1.9 inches)92%moderate
April Weather1°C (33°F)70 mm (2.8 inches)88%high
May Weather10°C (49°F)81 mm (3.2 inches)76%very high
June Weather16°C (60°F)111 mm (4.4 inches)74%very high
July Weather19°C (67°F)87 mm (3.4 inches)80%very high
August Weather17°C (63°F)87 mm (3.4 inches)82%very high
September Weather12°C (54°F)112 mm (4.4 inches)85%high
October Weather5°C (41°F)110 mm (4.3 inches)89%moderate
November Weather-4°C (25°F)75 mm (2.9 inches)89%low
December Weather-11°C (12°F)59 mm (2.3 inches)96%low

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