September Weather in Sylvan Lake, Canada

Last updated: April 22, 2025

In September, Sylvan Lake, Canada experiences a delightful transition into autumn, showcasing a maximum temperature of 30°C (86°F), while the average hovers around a crisp 10°C (51°F), dipping to a refreshing minimum of -4°C (25°F). Although the area encounters 56 mm (2.2 in) of precipitation over the month—spreading across 10 days—the humidity remains relatively high at 73%, adding a touch of moisture to the cool air. This blend of warm days and cooler nights makes September a picturesque time to visit, perfect for enjoying the vibrant fall colors and outdoor activities.

September Temperature in Sylvan Lake

In September, Sylvan Lake, Canada, experiences a pleasant transition from the warmth of summer to the crispness of autumn. The average temperature hovers around 10°C (51°F), with daily temperatures ranging from a refreshing low of -4°C (25°F) to a comfortable high of 30°C (86°F). This mild weather invites locals and visitors alike to enjoy outdoor activities before the colder months set in. As September unfolds, the days begin to shorten, and the landscape gradually shifts into vibrant fall colors, marking a picturesque time in this beautiful region. Embrace the dynamic climate of Sylvan Lake, where the lingering warmth of summer meets the early whispers of autumn.

September Weather in Sylvan Lake: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Sylvan Lake, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec161124365158626050372617
Data source: Temperature data for Sylvan Lake 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 Sylvan Lake

In September, Sylvan Lake experiences a notable transition in its weather patterns as the summer warmth begins to wane. With 56 mm (2.2 in) of precipitation, rainfall in this month is on par with August, reflecting a significant uptick from the drier months earlier in the year. This precipitation typically occurs over 10 days, indicating a shift toward more consistent moisture as autumn approaches. As the region prepares for cooler temperatures, these September rains contribute essential hydration to the landscape, paving the way for vibrant fall colors and a rich transition into the later months. Overall, the gradual increase in precipitation from May through September illustrates a clear trend of heightened moisture that characterizes the changing seasons in Sylvan Lake.

September Precipitation Trends in Sylvan Lake

The chart displays monthly precipitation patterns in Sylvan Lake, 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.
JanFebMarAprMayJunJulAugSepOctNovDec122229336895925556293125
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Sylvan Lake

As summer transitions into autumn, September in Sylvan Lake, Canada, witnesses a noticeable dip in humidity, with levels falling to 73%. This decrease marks the lowest humidity point since May, signaling a shift towards drier conditions as the landscape prepares for the cooler months ahead. Following the peak summer months where humidity hovered around 77%-81%, September offers a refreshing respite, making outdoor activities more enjoyable. As the year progresses, humidity levels begin to inch upwards again in October, but September's comfortable air invites residents and visitors alike to savor the crisp, serene days of early fall.

September Average Humidity in Sylvan Lake

This chart illustrates the average monthly humidity levels in Sylvan Lake, 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.
JanFebMarAprMayJunJulAugSepOctNovDec90%92%87%81%77%77%81%78%73%78%82%91%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Sylvan Lake

In September, Sylvan Lake experiences a high UV Index of 6, signaling the end of summer but still requiring vigilance under the sun. With a burn time of 25 minutes, it's crucial to stay protected, especially as the sun's intensity gradually decreases from the peaks of July and August, where consistent readings of 8 indicated very high exposure risk. This trend reflects a transitional period, where the weather begins to cool, yet UV rays remain potent, reminding residents and visitors that sun safety should remain a priority. For more insights on UV levels throughout the year, you can check Sylvan Lake UV Index.

Maximum UV Index Levels in Sylvan Lake for September

The chart shows the monthly maximum UV Index (UVI) for Sylvan Lake 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.
JanFebMarAprMayJunJulAugSepOctNovDec234678886421
Data source: Sylvan Lake 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 Sylvan Lake

As summer gives way to autumn, September in Sylvan Lake, Canada beautifully bridges the long, sun-drenched days of July and August with the cooler months ahead. With 238 hours of sunshine, September experiences a notable shift, offering a serene contrast to the peak summer months, yet still providing ample light for outdoor enthusiasts. While sunshine gradually diminishes from the intense 359 hours in July, the month's brightness allows locals and visitors alike to savor the crisp air and vibrant foliage, making it a perfect time for exploration. This gradual transition to fall is mirrored by a drop in daylight hours, ushering in the cozy atmosphere that prepares Sylvan Lake for the winter months, yet still leaves plenty of opportunities to bask in its golden glow.

Monthly Sunshine Duration in Sylvan Lake: September Highlighted

The September sunshine duration represents the total number of hours Sylvan Lake 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.
JanFebMarAprMayJunJulAugSepOctNovDec127h170h247h285h331h346h359h324h238h218h162h150h
Data source: Sylvan Lake September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Sylvan Lake During September

As September rolls around in Sylvan Lake, Canada, the likelihood of enjoying sunny weather remains quite promising, with a 47% chance of sunshine. This marks a slight dip from the summer months of July and August, which boast higher probabilities of clear skies at 53% and 45%, respectively. Overall, the transition into autumn presents a balanced opportunity for sun-chasers, with September maintaining a strong potential for pleasant weather amid the gradual cooling of temperatures. Although it's not as bright as the peak summer months, the sunny days of September still offer a delightful chance to savor the last vestiges of summer before the colder months set in.

Percentage of Sunny Days in September in Sylvan Lake

The chart illustrates the percentage of sunny days in Sylvan Lake 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 Sylvan Lake experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec38%28%37%48%35%52%53%45%47%53%38%30%
Data source: Sylvan Lake September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Sylvan Lake in September

As the calendar turns to September, Sylvan Lake, Canada, transitions gracefully from the vibrant heights of summer daylight into the mellow tones of autumn. With approximately 12 hours of daylight, September marks a notable shift from the long, sun-drenched days of summer, where July basked in 16 hours. This month signals the start of a gradual decrease in daylight that continues into the fall. Following the peak of 15 hours in May, residents now enjoy a balanced blend of sun and shade, reminding us of the fleeting nature of the seasons. As daylight ebbs, those in Sylvan Lake are invited to savor the crisp air and fall foliage, creating a perfect backdrop for reflection and outdoor adventures.

Average Daylight Hours in Sylvan Lake for September

The chart illustrates the variation in daylight duration in Sylvan Lake throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 19m9h 56m11h 56m13h 58m15h 44m16h 40m16h 9m14h 32m12h 34m10h 33m8h 44m7h 47m
Data source: Sylvan Lake daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Sylvan Lake

As summer transitions to fall in Sylvan Lake, Canada, the September winds bring a refreshing change, with an average speed of 3.2 m/s (7 mph). This uptick from the gentler breezes of July and August signals a shift in the season, where the winds become slightly more spirited yet remain mild compared to the winter months. Notably, February and March also share a similar average, suggesting that the winds in September echo the calmness of early spring, offering a perfect backdrop for outdoor activities. As the year progresses, the winds maintain a consistent pattern, dancing around the 3 m/s mark, hinting at Sylvan Lake's moderate climate. The pleasant September air, therefore, serves as a gentle reminder of the warmth still lingering before the chill of October settles in.

Average September Wind Speed in Sylvan Lake

The chart displays monthly wind speed patterns in Sylvan Lake, 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.
JanFebMarAprMayJunJulAugSepOctNovDec3.53.33.33.03.22.92.52.93.2 m/s3.13.23.0
Data source: Sylvan Lake September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Sylvan Lake Compares to Other Months

The weather in Sylvan Lake 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 Sylvan Lake and find detailed weather information for every month.

In September, the weather is significantly milder, with temperatures ranging from a chilly -4°C (25°F) at night to a warm 30°C (86°F) during the day, averaging around 10°C (51°F). The month brings about 56 mm (2.2 in) of precipitation over 10 days, and the humidity sits at a moderate 73%. In sharp contrast, January experiences severe cold, with temperatures plummeting as low as -40°C (-39°F) and averaging a brisk -9°C (16°F), only reaching up to 8°C (47°F). Precipitation is sparse, totaling just 12 mm (0.5 in) over 4 days, and the humidity is notably higher at 90%. For more detailed information, you can check the Sylvan Lake weather in January.

September and February present starkly contrasting weather conditions. September boasts a range of temperatures, with minimums around -4°C (25°F) and maximums reaching up to 30°C (86°F), averaging a mild 10°C (51°F). With an average rainfall of 56 mm (2.2 in) over 10 days, humidity levels sit at a comfortable 73%. In contrast, February plummets to frigid temperatures, with minimums dropping to an extreme -38°C (-36°F) and maximums only reaching 12°C (54°F), resulting in a chilly average of -12°C (12°F). Precipitation is less frequent, totaling 22 mm (0.9 in) over just 7 days, but the humidity rises to a notable 92%. For a deeper dive into February conditions, check out Sylvan Lake weather in February.

In September, the weather is significantly milder, with temperatures ranging from a minimum of -4°C (25°F) to a maximum of 30°C (86°F) and an average of 10°C (51°F). This month also experiences 56 mm (2.2 in) of precipitation over about 10 days, contributing to a relative humidity of 73%. In contrast, March presents much colder conditions, with a minimum temperature of -34°C (-28°F), an average of -4°C (25°F), and a maximum of only 15°C (59°F). Precipitation is lighter at 29 mm (1.1 in) across 7 days, but humidity is higher at 87%. For a detailed look at March’s weather, you can check Sylvan Lake weather in March.

When comparing the weather in September and April, notable differences emerge. September boasts a more moderate temperature range, with averages around 10°C (51°F) and a maximum of 30°C (86°F), while April experiences a chillier average of 2°C (36°F) and a minimum dipping to -25°C (-13°F). Although September is generally warmer, it also sees higher humidity at 73% compared to April's 81%. In terms of precipitation, September receives 56 mm (2.2 in) over about 10 days, while April accumulates 33 mm (1.3 in) across 9 days, making the latter less wet overall. For a closer look at April's weather specifics, check out Sylvan Lake weather in April.

When comparing the weather in September and May, both months showcase a similar average temperature of around 10°C (51°F), but the extremes differ slightly. September can reach a high of 30°C (86°F), whereas May's maximum temperature peaks at 28°C (82°F), highlighting a warmer late summer. However, May tends to be a bit cooler at night with a minimum of -6°C (22°F) compared to September, which has a minimum of -4°C (25°F). In terms of precipitation, May experiences slightly more rainfall with 68 mm (2.7 in) over 9 days versus September's 56 mm (2.2 in) across 10 days, and humidity levels are marginally higher in May at 77%, compared to 73% in September. For more information on May weather specifics, check out Sylvan Lake weather in May.

September and June present distinct weather patterns, with September featuring cooler temperatures that range from a minimum of -4°C (25°F) to a maximum of 30°C (86°F), averaging around 10°C (51°F). In contrast, June offers warmer conditions, with minimums at 1°C (34°F), maximums peaking at 33°C (93°F), and an average temperature of 15°C (58°F). June also experiences higher precipitation, measuring 95 mm (3.7 in) over 14 days, compared to September's 56 mm (2.2 in) across 10 days, while humidity remains slightly higher in June at 77% versus September's 73%. For more detailed information on weather during this summer month, check Sylvan Lake weather in June.

When comparing the weather in September and July, notable differences in temperature and precipitation emerge. September features a broader temperature range with minimums dropping to -4°C (25°F) and average highs reaching up to 30°C (86°F). In contrast, July offers milder temperatures, with minimums at 5°C (41°F) and average highs around 34°C (93°F). Precipitation in September totals 56 mm (2.2 in) over 10 days, while July sees more rain, with 92 mm (3.6 in) across 14 days, contributing to higher humidity levels of 81% compared to September's 73%. For a more detailed look at July weather, you can check out Sylvan Lake weather in July.

In August, temperatures were generally warmer, with a minimum of 2°C (36°F) and an average of 16°C (60°F), peaking at a maximum of 35°C (95°F). The month also experienced slightly less precipitation at 55 mm (2.2 in) over 10 days, although humidity was a bit higher at 78%. In contrast, September sees a notable drop in average temperature to 10°C (51°F), with a minimum of -4°C (25°F) and a maximum of 30°C (86°F). Despite similar precipitation levels of 56 mm (2.2 in) over the same number of rainy days, September tends to feel cooler and more humid with 73% humidity compared to August. For a closer look at August weather specifics, you can visit Sylvan Lake weather in August.

September showcases a wider temperature range with minimums hitting -4°C (25°F) and peak averages around 30°C (86°F), while October experiences cooler temperatures, with minimums dropping to -19°C (-3°F) and an average of 3°C (38°F). Although September has more rain, totaling 56 mm (2.2 in) across 10 days, October is relatively drier with just 29 mm (1.1 in) over 6 days. Humidity also rises slightly in October to 78%, compared to 73% in September. For a detailed look at what to expect, check out Sylvan Lake weather in October.

September and November exhibit a stark contrast in weather, indicating a significant transition into the colder months. In September, temperatures range from a chilly minimum of -4°C (25°F) to a warm maximum of 30°C (86°F), with an average of 10°C (51°F). This month sees around 56 mm (2.2 in) of precipitation over approximately 10 days and averages a humidity level of 73%. On the other hand, November brings a much colder climate, with temperatures dipping to a minimum of -22°C (-7°F) and reaching a maximum of 19°C (67°F), resulting in an average temperature of -3°C (26°F). Precipitation decreases to 31 mm (1.2 in) over 8 days, while humidity slightly rises to 82%. For a more detailed perspective on November weather in this region, you can check Sylvan Lake weather in November.

In September, the weather offers a wide range of temperatures, with a minimum of -4°C (25°F) and a maximum reaching up to 30°C (86°F), making it relatively mild overall with an average temperature of 10°C (51°F). The month experiences moderate rainfall of 56 mm (2.2 in) across about 10 days, accompanied by a humidity level of 73%. In contrast, December brings significantly colder conditions, with temperatures plummeting to a minimum of -37°C (-34°F) and an average of -8°C (17°F), while the maximum hovers at just 10°C (51°F). Precipitation decreases to 25 mm (1.0 in) over approximately 7 days, and humidity rises to 91%. For more details, you can check the link: Sylvan Lake weather in December.

Compare Sylvan Lake's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Sylvan Lake

As September unfolds in Sylvan Lake, the weather marks a distinct transition from the warmer summer months to the crisp embrace of autumn. With temperatures fluctuating significantly, you can experience a warm maximum of 30°C, while cooler averages hover around 10°C and nighttime dips lead to chilly lows of -4°C. This month also sees increased preparation for the rainy season, averaging 56 mm of precipitation over approximately 10 days, contributing to a humidity level of 73%. September’s variable climate presents an opportunity for both swimming and cozying up, making it a unique time to embrace the beauty of Sylvan Lake. For a deeper exploration of what to expect throughout the year, visit Sylvan Lake Climate.