September Weather in Athabasca, Canada

Last updated: April 22, 2025

In September, the weather in Athabasca, Canada presents a remarkable transition as summer yields to fall. The maximum temperature reaches a pleasant 29°C (84°F), while the average settles at a comfortable 10°C (50°F), dipping to a minimum of -4°C (26°F). Visitors and residents can expect 42 mm (1.7 in) of precipitation over approximately 8 days, contributing to a humidity level of 73% that adds a crispness to the air. This month showcases a dynamic range of temperatures and weather patterns, making it an intriguing time to experience the changing seasons in this beautiful region.

September Temperature in Athabasca

As September arrives in Athabasca, Canada, a noticeable shift in temperatures marks the transition from summer's warmth to autumn's chill. The month starts with a minimum temperature of -4°C (26°F), allowing for some brisk, refreshing days, while the average hovers around a comfortable 10°C (50°F). Warm afternoons can still surprise visitors, reaching a maximum of 29°C (84°F), reminiscent of the lingering summer heat. However, the hint of colder months ahead becomes apparent as the nights turn crisp, signaling the gradual descent into winter. This dynamic fluctuation encourages outdoor enthusiasts to enjoy the changing foliage while basking in the last remnants of warmth.

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

The chart illustrates September temperature patterns in Athabasca, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec11823355259636050372213
Data source: Temperature data for Athabasca 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 Athabasca

September in Athabasca, Canada, marks a noteworthy shift in precipitation patterns as summer gives way to autumn. With 42 mm (1.7 in) of rain falling over 8 days, September experiences a significant decrease in rainfall compared to the lush months of June and July, which saw 108 mm and 122 mm, respectively. This decline heralds the transition towards drier conditions as the year progresses, with October expected to bring even less precipitation at 38 mm (1.5 in). Despite this reduction, September remains a crucial month for replenishing local water sources before the winter freeze, making it an essential part of the hydrological cycle in Athabasca.

September Precipitation Trends in Athabasca

The chart displays monthly precipitation patterns in Athabasca, 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.
JanFebMarAprMayJunJulAugSepOctNovDec18191932401081236742383419
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Athabasca

September in Athabasca, Canada, brings a welcome shift in humidity levels as they drop to 73%, marking a gentle transition from the sultry summer months. Following a peak in humidity during the more oppressive months of January and February, where levels soar to 88% and 93%, respectively, the trend reveals a gradual decline through the spring and summer. After hovering at 70% during June and May, September’s humidity signifies a refreshing yet comfortable environment, bridging the gap to the more humid autumn months that follow. This decrease not only offers a reprieve from the summer heat but also sets the stage for the crisp conditions of October and November, where humidity levels again rise but remain lower compared to the earlier winter months.

September Average Humidity in Athabasca

This chart illustrates the average monthly humidity levels in Athabasca, with September's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how September's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec88%93%91%78%70%70%79%78%73%81%85%93%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Athabasca

In September, Athabasca experiences a UV Index of 6, categorizing exposure as high and suggesting a burn time of 25 minutes. This marks a gradual decline from the peak summer months, where the UV Index reached a high of 8 in July. Despite the decrease, September maintains substantial UV intensity, reflecting the lingering effects of summer sun. Visitors and residents should remain vigilant about sun protection as the season transitions, acknowledging that while the burn time increases slightly compared to July, the risk of harm still warrants caution. For more detailed insights, check out the Athabasca UV Index.

Maximum UV Index Levels in Athabasca for September

The chart shows the monthly maximum UV Index (UVI) for Athabasca 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.
JanFebMarAprMayJunJulAugSepOctNovDec124577876311
Data source: Athabasca 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.

September Sunshine in Athabasca

In Athabasca, Canada, September shines with a remarkable 237 hours of sunshine, marking the tail end of a vibrant summer. As the days transition from the long, sun-soaked months of July and August, which boast 352 and 321 hours respectively, September offers a gentler light—a signal of the impending autumn. The gradual decline in sunshine hours from the peak summer months reflects a natural rhythm, with June's generous 329 hours preceding the early fall. While the warmth lingers, the days begin to shorten, hinting at the cooler temperatures of October and November, which see a further drop to 191 and 143 hours, respectively. This seasonal ebb and flow of sunlight not only shapes Athabasca's landscape but also invites residents and visitors alike to revel in the golden hues of early autumn.

Monthly Sunshine Duration in Athabasca: September Highlighted

The September sunshine duration represents the total number of hours Athabasca experiences direct sunlight during the month of September, excluding cloudy or obstructed periods. This chart compares the sunshine duration of September with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec109h180h238h276h338h329h352h321h237h191h143h142h
Data source: Athabasca September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Athabasca During September

As September rolls into Athabasca, the likelihood of sunny weather begins to take center stage. With a 47% chance of sunshine, this month marks a notable increase compared to the transitional period of summer, making it one of the more promising times for clear skies. After the peak sun-filled months of July and August, which boast 54% and 43% chances, respectively, September maintains a strong position in the annual weather pattern. The upward trend observed as the warmer months progressed leads seamlessly into autumn, hinting at delightful days perfect for outdoor activities and fall exploration. While the chances of sunshine may begin to dip as October approaches, September offers a vibrant blend of summer brightness and the impending beauty of autumn.

Percentage of Sunny Days in September in Athabasca

The chart illustrates the percentage of sunny days in Athabasca throughout the year, with September highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Athabasca experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec36%29%35%39%36%44%54%43%47%55%37%32%
Data source: Athabasca September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Athabasca in September

As summer wanes and September arrives in Athabasca, Canada, the daylight hours begin to gracefully transition. With an average of 12 hours of daylight, this month marks a noticeable shift from the longer, sun-drenched days of July and August. The gradual decrease in light is a reminder of the encroaching autumn, following a peak of 17 hours in June. The trend reflects a gentle return to shorter days, as the promise of crisp fall evenings approaches, driving home the seasonal rhythm that Athabasca experiences year after year. While the daylight still lingers pleasantly, it sets the stage for the cozy embrace of the upcoming months.

Average Daylight Hours in Athabasca for September

The chart illustrates the variation in daylight duration in Athabasca throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec7h 55m9h 43m11h 55m14h 9m16h 8m17h 11m16h 36m14h 47m12h 37m10h 24m8h 23m7h 18m
Data source: Athabasca daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Athabasca

In September, Athabasca experiences a gentle breeze with an average wind speed of 3.3 m/s (7 mph), reflecting a slight uptick from the summer months. This velvety wind whispers through the trees as the leaves begin to change, hinting at the arrival of autumn. Interestingly, wind speeds have maintained a relatively steady cadence throughout the year, hovering around the 3.0 to 3.4 m/s mark. While spring and summer months showed minor fluctuations, September’s wind brings a refreshing consistency, enhancing the crisp air as the season transitions. As winter approaches, the delicate shift in winds could signify nature’s subtle preparations, making this time of year especially enchanting in Athabasca.

Average September Wind Speed in Athabasca

The chart displays monthly wind speed patterns in Athabasca, with values for each month shown alongside September's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how September's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec3.43.33.23.03.23.33.13.13.3 m/s3.23.13.0
Data source: Athabasca September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Athabasca Compares to Other Months

The weather in Athabasca changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of September's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Athabasca and find detailed weather information for every month.

September and January present starkly contrasting weather conditions. In September, temperatures fluctuate between a chilly -4°C (26°F) and a warm 29°C (84°F), with an average of 10°C (50°F). The month experiences 42 mm (1.7 in) of precipitation over about 8 days, while humidity levels are at a moderate 73%. In contrast, January is marked by more severe cold, with temperatures dipping as low as -40°C (-41°F) and averaging -12°C (11°F), peaking at only 7°C (45°F). Precipitation decreases to 18 mm (0.7 in) occurring on just 4 days, with humidity rising to a higher 88%. For more information, visit Athabasca weather in January.

September and February present stark contrasts in weather. In September, temperatures range from a chilly -4°C (26°F) at night to a warm 29°C (84°F) during the day, with an average temperature of 10°C (50°F). The month experiences moderate precipitation of 42 mm (1.7 in) over about 8 days, with humidity at a comfortable 73%. In contrast, February is defined by bitterly cold temperatures, reaching a minimum of -41°C (-41°F) and averaging -13°C (9°F), with a maximum of only 12°C (55°F). The month is much drier, with just 19 mm (0.8 in) of precipitation over 3 days, coupled with higher humidity at 93%. For more detailed information, you can check Athabasca weather in February.

In September, temperatures typically range from a chilly minimum of -4°C (26°F) to a warm maximum of 29°C (84°F), with an average of 10°C (50°F). This month also sees a moderate level of precipitation at 42 mm (1.7 in) over about 8 days, and the humidity levels sit at 73%. In contrast, March experiences much colder temperatures, with a minimum of -31°C (-23°F) and an average of -5°C (23°F), peaking at just 15°C (60°F). Precipitation is lower in March, totaling 19 mm (0.8 in) across roughly 6 days, but the humidity is notably higher at 90%. For a more detailed overview of March weather, visit Athabasca weather in March.

September and April exhibit contrasting weather patterns, reflecting the transitional phases of autumn and spring. In September, temperatures range from a chilly minimum of -4°C (26°F) to a warm maximum of 29°C (84°F), averaging around 10°C (50°F). This month experiences relatively mild precipitation of 42 mm (1.7 in) over 8 days, with a humidity level of 73%. In contrast, April is cooler overall, with a minimum temperature plunging to -24°C (-11°F) and a more modest average of 2°C (36°F). While the maximum temperature reaches a comfortable 25°C (78°F), the month sees less precipitation at 32 mm (1.3 in) over 7 days, but slightly higher humidity at 78%. For more insights into April weather specifics, you can check Athabasca weather in April.

In September, temperatures range from a minimum of -4°C (26°F) to a maximum of 29°C (84°F), with an average of 10°C (50°F). The month experiences about 42 mm (1.7 in) of precipitation over approximately 8 days, coupled with a humidity level of 73%. In contrast, May sees slightly cooler temperatures, with lows of -6°C (22°F) and highs reaching up to 31°C (88°F), and an average temperature of 11°C (52°F). Precipitation in May is marginally lower at 40 mm (1.6 in) spread over 6 days, and the humidity is slightly less at 70%. Overall, May tends to have more comfortable warm temperatures, while September brings a wider range of weather conditions. For more detailed information, you can check Athabasca weather in May.

September and June exhibit distinct weather characteristics that reflect the transition between seasons. In September, temperatures swing from a chilly minimum of -4°C (26°F) to a warm maximum of 29°C (84°F), with an average of 10°C (50°F). Despite lower humidity at 73%, precipitation occurs on about 8 days, totaling 42 mm (1.7 in). In contrast, June presents a milder climate, with temperatures ranging from a minimum of 1°C (35°F) to a peak of 35°C (95°F) and an average of 15°C (60°F). June is also characterized by higher rainfall, experiencing about 108 mm (4.3 in) over 14 days, while maintaining a similar humidity level of 70%. For more details, you can check Athabasca weather in June.

In September, temperatures range from a chilly minimum of -4°C (26°F) to a comfortable average of 10°C (50°F), peaking at a warm 29°C (84°F). The month experiences moderate precipitation levels, with about 42 mm (1.7 in) over approximately 8 days, and an average humidity of 73%. In contrast, July boasts significantly warmer climate conditions, with minimum temperatures around 6°C (44°F) and an average of 17°C (63°F), while highs can soar to 36°C (96°F). July is also wetter, receiving 122 mm (4.8 in) of rain spread over 15 days, and has a slightly higher humidity at 79%. For more detailed information on July weather, visit Athabasca weather in July.

In comparing the weather between August and September, September shows a notable drop in average temperature, with a minimum of -4°C (26°F) and an average of 10°C (50°F), compared to August's warmer minimum of 3°C (38°F) and average of 16°C (60°F). The maximum temperature in September reaches 29°C (84°F), which is still warm but cooler than August's peak of 32°C (89°F). Additionally, September experiences less precipitation with 42 mm (1.7 in) over 8 days, compared to August’s 67 mm (2.6 in) over 10 days. Humidity slightly decreases from 78% in August to 73% in September. For a more detailed analysis of August's weather, you can check the link: Athabasca weather in August.

September and October exhibit notable changes in weather characteristics. September experiences a wider temperature range, with minimums around -4°C and maximums reaching up to 29°C, averaging out at 10°C. In contrast, October cools down significantly, with minimum temperatures dropping to -13°C and an average of 3°C, while maximum temperatures peak at 21°C. Precipitation levels are relatively similar, with September receiving 42 mm over 8 days and October slightly less at 38 mm over 6 days. Additionally, October sees a rise in humidity, reaching 81%, compared to September's 73%. For a more detailed overview of October's weather, visit Athabasca weather in October.

As the seasons transition from September to November, the weather experiences a dramatic shift. September boasts a min temperature of -4°C (26°F) and averages around 10°C (50°F), with highs reaching up to 29°C (84°F), accompanied by 42 mm (1.7 in) of precipitation over 8 days and 73% humidity. In stark contrast, November's temperatures plummet to a minimum of -21°C (-6°F) and an average of -5°C (23°F), with a maximum of 13°C (56°F). The month sees slightly less precipitation at 34 mm (1.3 in) over the same number of days, but humidity rises to 85%. This shift indicates a clear march into winter conditions. For more detailed insights, check out Athabasca weather in November.

September and December present stark contrasts in weather patterns. In September, temperatures range from a mild -4°C (26°F) at night to a warm 29°C (84°F) during the day, with an average of 10°C (50°F). The month experiences about 42 mm (1.7 in) of precipitation over eight days, with a humidity level of 73%. In contrast, December sees much colder conditions, with nighttime lows plummeting to -41°C (-42°F) and daytime highs reaching only 9°C (48°F), leading to an average of -10°C (14°F). Precipitation is lower in December at 18 mm (0.7 in) over five days, but humidity rises to a significant 93%. For a more detailed look at the weather in December, you can visit Athabasca weather in December.

Compare Athabasca's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Athabasca

As September graces Athabasca, it brings a distinct shift in weather patterns, offering a blend of warm days and cool nights. The transition from summer's heat becomes evident, with maximum temperatures providing a comfortable escape while average lows hint at the approaching chill of autumn. Rainfall is minimal, with occasional drizzles contributing to the season’s charm, but the humidity tends to linger, wrapping the landscape in a soft embrace. This month stands apart from the sweltering summer months, marked by a refreshing vibrancy and the subtle onset of fall. For a deeper exploration of what to expect throughout the year, check out Athabasca Climate.