Last updated: February 24, 2025
September at Niagara Falls, United States offers a delightful transition from the warmth of summer to the crispness of autumn. The maximum temperature often reaches a pleasant 30°C (86°F), while the average temperature settles around 19°C (66°F), allowing for enjoyable outdoor exploration. As nights cool down, temperatures can dip to a minimum of 7°C (44°F). Visitors should be prepared for occasional rain, with 75 mm (3.0 in) of precipitation spread over about 9 days, contributing to the region's lush beauty. The humidity averages a comfortable 76%, enhancing the serene experience of witnessing the breathtaking falls amidst vibrant fall foliage.
As summer fades into fall, September brings a delightful transition in temperatures at Niagara Falls, United States. With minimums settling around 7°C (44°F) and averages hovering near 19°C (66°F), the weather remains pleasantly mild. Max temperatures can still reach up to 30°C (86°F), offering lingering warmth for visitors who wish to experience the majestic falls amidst vibrant autumn hues. This month marks a gradual decline from the scorching heights of summer, inviting outdoor adventures without the sweltering heat. As the month progresses, the crispness of fall begins to loom, heralding the cooling days ahead while still allowing ample opportunity to revel in the beauty of this iconic destination.
In September, Niagara Falls experiences a moderate precipitation amount of 75 mm (3.0 in), with rain falling on an average of just 9 days throughout the month. This marks a slight decrease in both rainfall and rainy days compared to the busier summer months, particularly July, which boasts the highest precipitation at 125 mm (4.9 in) over 13 days. As summer transitions to autumn, September’s weather gives a taste of cooler, drier conditions ahead, yet still provides enough moisture to maintain the lush landscapes that characterize the region. This trend of diminishing rainfall continues into October, where precipitation peaks again, reminding us of the dynamic shifts in weather patterns typical of this scenic area.
As summer transitions into autumn, September in Niagara Falls experiences a moderate drop in humidity, settling at 76%. This marks a noticeable decline from the muggy heights of 91% in January and February, gradually easing through the warmer months. By August, humidity levels reach their lowest at 72%, creating a refreshing environment as fall approaches. The slight uptick in September’s humidity hints at the impending change of season, positioning it between the drier summer and the wetter autumn months. This trend underscores Niagara Falls' unique climate experience, where humidity fluctuates throughout the year, embracing the beauty of each season.
As summer gives way to fall in Niagara Falls, the UV Index begins to decline, with September registering a UV Index of 7, categorized as high. This is a notable drop from the peak levels seen during the summer months, where indices soared to 9 and 10, necessitating minimal exposure times of just 15 minutes to avoid sunburn. In contrast, September allows for slightly longer exposure, with a burn time of 25 minutes before protection is needed. This gradual easing in intensity signals a shift towards cooler and shorter days, yet it’s a reminder that harmful UV rays can still pose risks in early autumn. For more details on the UV Index throughout the year, check out Niagara Falls UV Index.
UV Risk Categories
September brings a beautiful transition in Niagara Falls, as summer's warm embrace begins to soften. With 304 hours of sunshine, this month showcases a decline from the sun-soaked heights of July and August, which basked in 348 and 345 hours, respectively. As the year begins to shift, September retains a generous glow, providing ample daylight for visitors to marvel at the majestic falls. This trend of diminishing sunlight continues into October, where the hours drop to 206. Yet, September's sun serves as a perfect bridge, allowing nature lovers to relish the vibrant foliage while still enjoying longer days. With its warm hues and moderate temperatures, September in Niagara Falls remains a splendid time to experience the breathtaking scenery under a golden sky.
As summer wanes, September in Niagara Falls continues to offer a favorable chance of sun, hovering around 43%. This marks a slight dip from the sunnier months of August at 46%, yet maintains a more promising outlook compared to the early months of the year like January and February, where daylight feels scarce with chances as low as 14% and 24% respectively. Interestingly, September's weather conditions are reminiscent of the transitional months of April and June, both hovering around the 40% range, suggesting a lingering warmth and brightness before fall takes its full hold. This balance of warmth and light makes September a delightful time to experience the natural beauty of Niagara Falls, even as the autumn season approaches.
As September arrives in Niagara Falls, the days begin to subtly shorten, offering about 12 hours of daylight. This marks a gradual decline from the 15 hours experienced in June, the peak of summer brightness. After enjoying 14 hours in July and 13 hours in August, September ushers in the first hints of autumn, where nature starts to embrace the changing season. Following the pattern of previous months, daylight hours will continue to decrease as October approaches, suggesting a readiness for cozy evenings and the rich hues of fall foliage that will soon grace the landscape.
As September unfolds in Niagara Falls, the average wind speed hovers around 4.0 m/s (9 mph), aligning with the early year trends. After experiencing the warmest months where winds slowed to around 3.1 m/s, the winds begin to pick up again, signaling a transition into autumn. This slight increase reflects a recurring pattern as the seasons shift, with wind speeds typically rising in late summer and early autumn before tapering off again towards winter. Notably, September’s winds are reminiscent of January’s conditions, suggesting a natural rhythm in the environment that weaves through the year, inviting both visitors and locals alike to embrace the refreshing breezes as nature prepares for a stunning seasonal change.
The weather in Niagara Falls 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 Niagara Falls and find detailed weather information for every month.
In September, the weather is generally mild and pleasant, with temperatures ranging from a minimum of 7°C (44°F) to a maximum of 30°C (86°F) and an average of 19°C (66°F). This month experiences about 75 mm (3.0 inches) of precipitation over approximately 9 days, alongside a moderate humidity of 76%. In stark contrast, January brings much colder conditions, with temperatures plummeting to a minimum of -19°C (-1°F) and only reaching a maximum of 14°C (58°F), averaging -2°C (28°F). The precipitation level slightly increases to 77 mm (3.0 inches), but it occurs over more days, approximately 12, while the humidity rises to 91%, making the air feel even colder. For more detailed insights, check Niagara Falls weather in January.
September and February present starkly contrasting weather patterns. In September, temperatures range from a comfortable 7°C (44°F) at night to a warm 30°C (86°F) during the day, with an average of 19°C (66°F). The month sees approximately 75 mm (3.0 in) of precipitation over about 9 days, accompanied by a relatively high humidity level of 76%. In contrast, February experiences much colder conditions, with temperatures plummeting to a minimum of -19°C (-3°F) and averaging -2°C (29°F), despite a maximum of 16°C (61°F) being possible. It also has higher precipitation at 82 mm (3.2 in) spread across 14 days, along with increased humidity at 91%. For those interested in specifics, Niagara Falls weather in February provides additional insights into the winter conditions.
In comparing the weather between September and March, one can observe significant differences. September boasts more temperate conditions, with minimum temperatures around 7°C (44°F) and averaging 19°C (66°F), reaching a maximum of 30°C (86°F). In contrast, March experiences much colder weather, with minimum temperatures plummeting to -15°C (5°F) and an average of only 2°C (35°F), peaking at 18°C (65°F). While precipitation levels are somewhat similar, September sees around 75 mm (3.0 in) over 9 days, whereas March registers 72 mm (2.8 in) over 12 days, indicating a slightly wetter month with higher humidity at 88%. For more detailed information about the specific weather conditions in March, you can refer to Niagara Falls weather in March.
September and April present quite different weather experiences. In September, temperatures are generally milder, ranging from a minimum of 7°C (44°F) to an average of 19°C (66°F), with highs reaching up to 30°C (86°F). The humidity in September is also lower at 76%, and while there is some precipitation, averaging 75 mm (3.0 in) over about 9 days, it tends to be less frequent. Conversely, April is characterized by cooler temperatures, with a minimum plunging to -4°C (26°F) and an average only reaching 7°C (44°F), peaking at 24°C (75°F). This month sees higher precipitation levels at 116 mm (4.6 in), occurring over 14 days, and a higher humidity of 88%. For a more detailed overview of weather conditions during this month, you can check Niagara Falls weather in April.
When comparing the weather in September and May, notable differences emerge. September showcases a wider temperature range, with minimums around 7°C (44°F) and maximums peaking at 30°C (86°F), contributing to a warm average of 19°C (66°F). The month experiences moderate precipitation of 75 mm (3.0 in) over 9 days, with humidity levels at 76%. In contrast, May has cooler temperatures, with lows dropping to 0°C (32°F) and an average of 13°C (56°F), while still reaching highs of 29°C (84°F). It sees a higher total precipitation of 101 mm (4.0 in) spread over 13 days and slightly elevated humidity at 82%. For more details on specific conditions, you can explore Niagara Falls weather in May.
When comparing the weather in September and June, we notice that both months feature similar temperature ranges, with average temperatures hovering around 19°C (66°F to 67°F) and maximums reaching up to 30°C (86°F to 87°F). However, September tends to be slightly cooler in the early mornings, with a minimum temperature of 7°C (44°F) compared to June's 8°C (47°F). Precipitation levels are comparable, with September recording 75 mm over 9 days and June seeing slightly more at 81 mm over 10 days. Humidity levels are also quite close, with September at 76% and June a bit higher at 79%. For more detailed insights on June weather, you can visit Niagara Falls weather in June.
In comparing the weather between September and July, September offers a broader range of temperatures, with a minimum of 7°C (44°F) and a maximum of 30°C (86°F), resulting in a pleasant average of 19°C (66°F). In contrast, July presents warmer conditions, featuring a minimum of 15°C (58°F) and a maximum of 32°C (90°F), with an average temperature of 23°C (73°F). While September sees less precipitation at 75 mm (3.0 inches) over 9 days, July has higher rainfall, amounting to 125 mm (4.9 inches) over 13 days. Humidity levels are similar, with September at 76% and July slightly higher at 77%. For more detailed information, you can check Niagara Falls weather in July.
In comparing the weather of September and August, September tends to be cooler, with minimum temperatures dropping from 13°C (56°F) in August to 7°C (44°F). The average temperature in September is also lower at 19°C (66°F) compared to 22°C (72°F) in August. Interestingly, both months share the same maximum temperature of 30°C (86°F). However, September experiences slightly more rain with 75 mm (3.0 in) of precipitation over 9 days, while August has 83 mm (3.3 in) over 13 days, indicating that August is slightly wetter but with fewer rainy days. Humidity levels are marginally higher in September at 76%, compared to 72% in August. For more detailed information, you can check Niagara Falls weather in August.
September generally presents warmer conditions with temperatures ranging from a minimum of 7°C (44°F) to a maximum of 30°C (86°F) and an average of 19°C (66°F). The month sees a moderate amount of rainfall, totaling around 75 mm (3.0 in) over about 9 days, accompanied by 76% humidity.
In contrast, October experiences a notable drop in temperature, with minimums dropping to 2°C (36°F) and an average of 13°C (55°F), while the maximum reaches 26°C (80°F). Precipitation increases to 128 mm (5.0 in), spread over 16 days, and humidity rises slightly to 83%. For more specific details on October's weather patterns, you can refer to Niagara Falls weather in October.
In September, the weather is typically warmer, with temperatures ranging from a minimum of 7°C (44°F) to a maximum of 30°C (86°F) and an average temperature of 19°C (66°F). The month experiences about 75 mm (3.0 in) of precipitation over 9 days, with a humidity level of 76%. In contrast, November sees a significant drop in temperature, with minimums dipping to -9°C (16°F), an average of 5°C (42°F), and a maximum of 21°C (70°F). While November has slightly more precipitation at 87 mm (3.4 in) over 13 days, the humidity increases to 88%. For a detailed look at weather conditions in November, visit Niagara Falls weather in November.
September and December present distinctly different weather experiences. In September, temperatures range from a mild minimum of 7°C (44°F) to a warm maximum of 30°C (86°F), with an average of 19°C (66°F). The month enjoys about 75 mm (3.0 in) of precipitation over 9 days, and humidity sits at a comfortable 76%. In contrast, December is much colder, with temperatures dipping as low as -18°C (0°F) and averaging around 1°C (34°F). Maximum temperatures reach up to 17°C (62°F), and the month sees an increase in precipitation to 91 mm (3.6 in) spread over 15 days, along with higher humidity at 87%. For more details on December weather, you can refer to Niagara Falls weather in December.
As September rolls in, Niagara Falls experiences a delightful transition from the summer heat, with temperatures averaging a comfortable 19°C (66°F). The month showcases a perfect blend of warm days, occasionally reaching up to 30°C (86°F), and cooler evenings that reflect the approaching autumn. Unlike the peak summer months, September witnesses moderate precipitation, with rain falling on about nine days throughout the month and an average humidity of 76%. This change not only enriches the lush scenery but also enhances the breathtaking views of the falls. For those planning to explore this stunning locale, the unique September weather provides an ideal backdrop. For more detailed insights, visit Niagara Falls Climate.