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September Weather in Hay River, Canada

Last updated: June 18, 2025

In September, the average temperature in Hay River, Canada hovers around 9°C (49°F). Expect chilly nights as temperatures can dip to a brisk -4°C (24°F), while days can warm up to a pleasant 26°C (79°F). Overall, you'll experience light precipitation with about 44 mm (1.7 in) spread over 10 days, coupled with an average humidity level of 80%.

September Temperature in Hay River

In September in Hay River, the average temperature is 9°C (49°F). Maximum temperatures can reach 26°C (79°F), while minimums can drop as low as -4°C (24°F). Be sure to pack layers to enjoy the diverse weather conditions while exploring this destination!

September Weather in Hay River: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Hay River, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hay River, September typically has an average temperature of 9°C (49°F), with highs reaching up to 26°C (79°F) and lows dropping to around -4°C (24°F).
JanFebMarAprMayJunJulAugSepOctNovDec-4-592643576360493513-1
Data source: Temperature data for Hay River 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 Hay River

In Hay River in September, the total precipitation amount is 44 mm (1.7 in) over the course of 10 days.

September Precipitation Trends in Hay River

The chart displays monthly precipitation patterns in Hay River, 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 Hay River, September typically receives around 44 mm (1.7 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec231519182259916844292920
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Hay River

In Hay River in September, humidity is 80%. With an average temperature of 9°C (49°F), this humidity feels like a damp chill that seeps into your bones, making outdoor activities less enjoyable and prompting a need for layered clothing to stay comfortable while traveling.

September Average Humidity in Hay River

This chart illustrates the average monthly humidity levels in Hay River, 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 Hay River is approximately 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec96%96%93%82%64%59%66%74%80%91%97%98%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Hay River

In Hay River in September, the maximum UV index reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Hay River for better planning.

Maximum UV Index Levels in Hay River for September

The chart shows the monthly maximum UV Index (UVI) for Hay River 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 Hay River typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec123466664211
Data source: Hay River 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 Hay River Compares to Other Months

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

This table compares monthly weather conditions in Hay River, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-20°C (-3°F)22 mm (0.9 inches)96%low
February Weather-21°C (-5°F)15 mm (0.6 inches)96%low
March Weather-13°C (9°F)19 mm (0.7 inches)93%moderate
April Weather-3°C (26°F)18 mm (0.7 inches)82%moderate
May Weather6°C (43°F)22 mm (0.8 inches)64%high
June Weather14°C (57°F)59 mm (2.3 inches)59%high
July Weather17°C (63°F)91 mm (3.6 inches)66%high
August Weather16°C (61°F)68 mm (2.7 inches)74%high
September Weather9°C (49°F)44 mm (1.7 inches)80%moderate
October Weather1°C (35°F)29 mm (1.1 inches)91%low
November Weather-11°C (13°F)29 mm (1.1 inches)97%low
December Weather-18°C (-1°F)20 mm (0.8 inches)98%low

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