Last updated: April 22, 2025
Experience the vibrant early autumn weather of Mont-Saint-Hilaire, Canada in September, where temperatures can soar to a maximum of 31°C (89°F), bringing a warm touch to the crisp air. With an average temperature of 16°C (61°F), the region offers a pleasant climate ideal for outdoor activities. However, as the month progresses, temperatures can dip to a minimum of 0°C (33°F), reminding residents and visitors alike of the transition to the colder months. Expect about 70 mm (2.8 in) of precipitation over 9 days, contributing to the lush landscape while maintaining a humidity level of 78% that enhances the fresh September atmosphere. Whether you prefer sun-soaked days or cooler evenings, Mont-Saint-Hilaire in September is a blend of warmth, freshness, and natural beauty.
As September arrives in Mont-Saint-Hilaire, Canada, the transition from summer to autumn begins to unfold. The temperatures during this month reflect a delightful mix, with minimums around 0°C (33°F) and averages hovering at 16°C (61°F), making it much milder than the frigid winter months that precede it. The maximum temperatures can reach up to 31°C (89°F), offering a last taste of summer warmth before the cooler October air emerges. This gradual cooling trend marks a shift from August's higher averages, creating a refreshing atmosphere perfect for enjoying the vibrant fall foliage that the region is renowned for. Overall, September encapsulates a harmonious blend of summer's lingering warmth and the refreshing chill of autumn, inviting outdoor explorations amidst the stunning landscapes.
In September, Mont-Saint-Hilaire experiences a notable decline in precipitation compared to the warmer summer months, with only 70 mm (2.8 in) over 9 days. This reduction marks a transition into autumn, a contrast to the more humid and rainier conditions observed in August, which received 113 mm (4.5 in) on 13 days. As temperatures begin to cool, September’s precipitation is significantly lower than the peaks of spring and early summer, and this period often sets the stage for the incoming crispness of October, which typically brings 141 mm (5.5 in) of rain across a greater number of days. The month’s lighter rainfall hints at the changing seasons, as Mont-Saint-Hilaire prepares for the rich tapestry of fall foliage, driven by the interplay of drier weather and cooler temperatures.
As summer transitions to fall in Mont-Saint-Hilaire, Canada, September marks a notable shift in humidity levels. With an average humidity of 78%, the air begins to feel crisper compared to the sweltering months of July and August, which boast humidity levels of 76% and 75%, respectively. This gradual decrease signifies the onset of autumn, paving the way for the cooler, more comfortable days ahead. Notably, September's humidity remains relatively high when juxtaposed with the upcoming months, as it settles between the milder conditions of summer and the more humid environment that winter months bring, with October's humidity climbing back up to 86%. Thus, September serves as a bridge, inviting residents to enjoy the beauty of changing leaves while still feeling the lingering warmth of summer.
As summer fades into autumn, Mont-Saint-Hilaire experiences a notable shift in UV Index levels. In September, the UV Index reaches 7, categorized as high, which means that while the risk of harm from unprotected sun exposure is still significant, it is slightly lower than the peak summer months. With a recommended burn time of 25 minutes, residents and visitors should remain vigilant about sun protection, especially as they enjoy the transitioning colors of the landscape. This month serves as a gentle reminder that while summer's intensity wanes, the sun's rays remain strong enough to warrant caution. For more insights on UV levels throughout the year, you can explore the Mont-Saint-Hilaire UV Index.
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As summer wanes into September, Mont-Saint-Hilaire, Canada, still basks in a generous glow of 280 hours of sunshine, making it one of the sunniest months of the year. This radiant transition follows a peak in July with 340 hours, which gradually tapers into August's 327 hours. The warm embrace of late summer sunlight beautifully enhances the vibrant autumn foliage that begins to emerge. Although daylight decreases as October approaches, with only 194 hours of sunshine on the horizon, September's abundant light creates a perfect backdrop for outdoor activities and breathtaking nature walks, inviting both locals and visitors to relish the beauty of this picturesque season.
As September rolls in, Mont-Saint-Hilaire sees a notable shift in its weather patterns, bringing a 40% chance of sunny days. This likelihood positions September favorably compared to the summer months, where July offers a lower chance at 31%, but then dips slightly from August's 45%. This trend suggests that while the lingering warmth of summer is still present, the onset of autumn introduces a mix of sunshine and occasional clouds. Interestingly, the chance of clear skies in September is higher than in several spring months, like April at 36% and June at 36%, indicating that the early fall can be a delightful time for those seeking sunny weather in this picturesque Canadian locale.
As September arrives in Mont-Saint-Hilaire, Canada, the daylight starts to wane, offering a gentle transition from the long, sun-soaked days of summer. With 12 hours of daylight, this month marks a notable decrease from the 14 hours enjoyed in August, indicative of the impending autumn. The daylight trend throughout the year reveals a predictable ebb and flow: starting at 9 hours in January, the days gradually lengthen to a peak of 15 hours in June and July, before tapering off again. As we move into October with only 10 hours of light, the shift to shorter days becomes increasingly evident, signaling the need to embrace the crisp, cozy evenings of fall.
As summer fades into fall, September in Mont-Saint-Hilaire experiences a gentle shift in the winds, with an average speed of 3.3 m/s (7 mph), echoing the calm of late summer. This consistency in wind speed maintains a sense of tranquility, following a notable dip in July's breezes, which reached their lowest at 2.9 m/s (7 mph). After this lull, August brings the winds back up to a familiar rhythm, setting the stage for September. As the temperatures cool, the winds are not only steady but invigorating, creating a picturesque backdrop for outdoor activities amid the colorful foliage. This trend of moderate breezes continues into October, signaling a gentle transition into the heart of autumn.
The weather in Mont-Saint-Hilaire 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 Mont-Saint-Hilaire and find detailed weather information for every month.
In September, the weather showcases a significant range, with temperatures fluctuating between a chilly 0°C (33°F) at night and a warm 31°C (89°F) during the day, making for a pleasant average of 16°C (61°F). With humidity at 78% and approximately 70 mm (2.8 in) of precipitation spread over 9 days, the month tends to feel quite balmy despite some rain.
In stark contrast, January brings much colder conditions, featuring temperatures that can plummet to a frigid -32°C (-25°F) at night and only rise to a maximum of 10°C (51°F), averaging a chilling -8°C (17°F). This winter month also experiences higher precipitation at 85 mm (3.4 in) over 11 days, accompanied by increased humidity at 93%, resulting in a stark and icy environment. For a detailed look at January weather specifics, visit Mont-Saint-Hilaire weather in January.
September and February present stark contrasts in weather conditions. In September, temperatures range from a mild 0°C (33°F) at night to a warm 31°C (89°F) during the day, with an average of 16°C (61°F), making it a pleasant month for outdoor activities. The humidity sits at a comfortable 78%, with precipitation totaling 70 mm (2.8 in) over about 9 days. In contrast, February is frigid, featuring minimum temperatures that plunge to -26°C (-15°F) and a maximum of only 14°C (58°F), with an average of -7°C (20°F). This month experiences higher humidity at 92% and more frequent precipitation, accumulating to 81 mm (3.2 in) across 12 days. For more details on the specifics of February weather, you can visit Mont-Saint-Hilaire weather in February.
The weather in September and March presents a stark contrast, with September being significantly warmer and more temperate than March. In September, temperatures range from a minimum of 0°C (33°F) to a comfortable maximum of 31°C (89°F), with an average of 16°C (61°F). In contrast, March experiences much colder weather, characterized by a minimum of -23°C (-10°F) and a maximum of 21°C (70°F), with an average temperature of -2°C (29°F). Precipitation levels are also notable, with September receiving 70 mm (2.8 inches) over 9 days, while March sees slightly higher precipitation at 84 mm (3.3 inches) across 11 days. Additionally, humidity is high in both months, reaching 78% in September and 86% in March, contributing to the overall chill of early spring. For more detailed information, you can check Mont-Saint-Hilaire weather in March.
When comparing the weather in September and April, we see distinct differences in temperature and precipitation patterns. September boasts a milder average temperature of 16°C (61°F), with highs reaching up to 31°C (89°F), while April has a cooler average of just 6°C (43°F) and maximums of 25°C (77°F). Furthermore, September experiences less precipitation (70 mm) over 9 days, compared to April's higher total of 119 mm over 12 days, contributing to a wetter atmosphere. Humidity also tends to be greater in April at 85%, compared to September's 78%. For a closer look at April weather specifics, visit Mont-Saint-Hilaire weather in April.
In comparing the weather of September and May, we notice that September features a wider temperature range, with minimums of 0°C (33°F) and maximums reaching up to 31°C (89°F), while May has slightly lower averages, ranging from -2°C (28°F) to a high of 36°C (97°F). September tends to be milder overall, averaging 16°C (61°F), compared to May's average of 14°C (57°F). Both months see notable precipitation, with September receiving around 70 mm (2.8 in) over 9 days and May experiencing slightly more at 98 mm (3.8 in) across 12 days. Humidity in both months is fairly high, sitting at 78% for September and 80% for May, making the overall feel quite humid during the transition from spring to fall. For a more detailed look at May weather specifically, you can visit Mont-Saint-Hilaire weather in May.
When comparing the weather in September and June, we see notable differences in temperature, precipitation, and humidity. September boasts a temperature range from a chilly minimum of 0°C (33°F) to a warm maximum of 31°C (89°F), averaging around 16°C (61°F). In contrast, June features slightly milder temperatures, with a minimum of 2°C (36°F), a maximum of 34°C (93°F), and an average of 19°C (66°F).
Precipitation levels are higher in June, totaling 105 mm (4.1 in) over 11 days compared to September's 70 mm (2.8 in) over 9 days. Humidity is higher in September at 78% compared to June's 74%. For more detailed insights, you can check Mont-Saint-Hilaire weather in June.
When comparing the weather in September and July, notable differences emerge. September typically experiences a wider temperature range, with minimums dropping to 0°C (33°F) and maximums reaching 31°C (89°F), resulting in an average temperature of 16°C (61°F). In contrast, July is generally warmer, with minimums at 9°C (49°F) and maximums peaking at 35°C (95°F), leading to an average temperature of 22°C (72°F). Additionally, July sees more precipitation, totaling 103 mm (4.1 in) over 15 days, compared to September's 70 mm (2.8 in) across 9 days. Humidity levels are similar, with September slightly higher at 78% versus July's 76%. To see a more detailed breakdown of July's weather, you can visit Mont-Saint-Hilaire weather in July.
In comparing the weather of September and August, September generally experiences cooler temperatures, with a minimum of 0°C (33°F) and an average of 16°C (61°F), while August boasts a minimum of 7°C (45°F) and an average of 21°C (70°F). August also tends to be slightly warmer, with maximum temperatures reaching up to 33°C (92°F), compared to September's high of 31°C (89°F). Precipitation levels are higher in August, with 113 mm (4.5 in) recorded over 13 days, compared to September's 70 mm (2.8 in) over 9 days. Humidity remains relatively consistent, peaking at 78% in September and 75% in August. For more detailed insights into August weather, you can visit Mont-Saint-Hilaire weather in August.
September and October present contrasting weather patterns. In September, temperatures range from a minimum of 0°C (33°F) to a maximum of 31°C (89°F), with an average temperature of 16°C (61°F). During this month, there are about 9 days of precipitation totaling 70 mm (2.8 in) and humidity levels at 78%. On the other hand, October experiences cooler temperatures, with a minimum of -4°C (25°F) and an average of 10°C (50°F). The maximum temperature peaks at 27°C (80°F), while precipitation increases to 141 mm (5.5 in) over 14 days, and humidity rises to 86%. For more specific details on October weather, you can check Mont-Saint-Hilaire weather in October.
September and November present starkly contrasting weather conditions. In September, temperatures range from a pleasant 0°C (33°F) at night to a warm 31°C (89°F) during the day, with an average of 16°C (61°F). The month features relatively moderate precipitation of 70 mm (2.8 in) over 9 days and humidity levels at 78%. In contrast, November sees much colder temperatures, with a minimum dropping to -21°C (-5°F) and an average of just 1°C (35°F). The maximum temperature can reach 22°C (72°F), though this is less frequent. November also experiences increased precipitation of 117 mm (4.6 in) over 14 days, accompanied by higher humidity at 88%. For more detailed information on November weather, visit Mont-Saint-Hilaire weather in November.
September and December showcase a dramatic shift in weather conditions. In September, temperatures range from a mild 0°C (33°F) at night to a warm 31°C (89°F) during the day, with an average of 16°C (61°F). The month also sees about 70 mm (2.8 in) of precipitation over 9 days, while humidity sits at 78%. In contrast, December brings much colder temperatures, with a minimum of -27°C (-16°F) and an average of -5°C (24°F), peaking at just 15°C (58°F). Precipitation increases slightly to 87 mm (3.4 in) spread over 12 days, and the humidity rises to 89%. This stark difference highlights the transition from the warmth of early autumn to the cold of winter. For a closer look at December's conditions, check out Mont-Saint-Hilaire weather in December.
As September unfolds in Mont-Saint-Hilaire, the weather begins to transition into autumn, showcasing a unique blend of warmth and coolness. With pleasantly warm days and crisp evenings, this month stands apart from the summer heat. While temperatures can soar up to a balmy 31°C, the average dips to a more moderate 16°C, setting the stage for a refreshing change. Rainfall is common, with around 70 mm falling over nine days, contributing to the lush landscapes that this season is known for. The humidity, at 78%, adds a touch of mugginess, a remnant of the summer's influence. For a deeper dive into how Mont-Saint-Hilaire's weather patterns shape your visit, explore the Mont-Saint-Hilaire Climate page.