Last updated: February 24, 2025
September in Crested Butte, United States, welcomes visitors with a diverse climate, showcasing a maximum temperature of 26°C (78°F) and an average of 11°C (51°F), while dipping to a chilly minimum of -6°C (21°F). This month witnesses 28 mm (1.1 in) of precipitation over approximately 6 days, contributing to the region's fresh and invigorating atmosphere. With a humidity level hovering around 65%, the weather combines crispness with a hint of summer’s warmth, making it an enchanting time to explore the breathtaking landscapes of this picturesque destination.
As autumn approaches, Crested Butte experiences a notable transition in September, marked by cooler temperatures compared to the summer months. With minima dipping to -6°C (21°F) and average temperatures reaching a comfortable 11°C (51°F), outdoor enthusiasts can enjoy the tail end of the hiking season, while the occasional warmth peaks at 26°C (78°F), offering a taste of summer’s lingering embrace. This month sets the stage for a gradual decline in temperatures, with a significant drop on the horizon as October approaches. September's pleasant conditions create a perfect backdrop for witnessing the vibrant fall foliage, making it an ideal time for exploration before the winter chill sets in.
As September unfolds in Crested Butte, the transition into fall becomes evident through a noticeable shift in precipitation patterns. With a modest 28 mm (1.1 in) of rain over 6 days, the month marks a significant decrease from the summer's wetter months, particularly July and August which saw a combined 75 mm. This decline reflects the general trend of drying out as the temperatures begin to cool, paving the way for the crisp, colorful days of autumn. The decreasing precipitation hints at the region's shift toward more stable, sunnier weather, while still providing enough moisture to sustain the vibrant alpine landscape.
In Crested Butte, September marks a notable transition in humidity, with levels around 65%. This figure reflects a gradual uptick from the drier summer months, peaking in July with just 52% humidity. As autumn approaches, the air retains a bit more moisture, signaling a shift from the warmth of summer. Preceding September, August experiences a slight increase to 56%, hinting at the return of humidity as cooler temperatures encroach. This trend of increasing moisture continues into the fall, with humidity rising to 76% by October. The data paints a picture of a landscape that breathes in the changing seasons, embracing the crispness of autumn while still holding onto remnants of summer's warmth.
In September, Crested Butte experiences a UV Index of 10, categorizing it as very high and signaling a critical need for sun protection with a burn time of just 15 minutes. As summer transitions to autumn, the UV levels begin to decline from their peak in the previous months, yet they remain significant enough to warrant caution. This trend reflects the region's overall seasonal cycle, where winter months present a much lower UV exposure. Understanding these patterns is essential for outdoor enthusiasts looking to enjoy the beautiful landscapes while staying safe under the sun. For detailed insights on UV exposure at various times of the year, check out Crested Butte UV Index.
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As summer gracefully transitions into autumn, September in Crested Butte enjoys a delightful balance of warmth and sunshine, boasting 318 hours of radiant daylight. This month follows the peak of summer brightness seen in July, which delivered an impressive 385 hours, and gently tapers into the softer hues of October. Interestingly, September still outshines the earlier months of the year, surpassing January’s mere 173 hours and February’s 223 hours. This gradual decrease in sunlight hints at the impending chill of winter, yet September retains a vibrant charm, perfectly embodying the spirit of early fall with its crisp air and golden landscapes. Embrace the lingering warmth and stunning scenery that this enchanting month brings.
As summer gives way to autumn in Crested Butte, September stands out with a notable 70% chance of sunny weather. This marks a delightful increase, following the summer months where the likelihood of sunshine hovers around 49% to 68%. Interestingly, after the sunny zenith of August, September maintains high potential for clear skies, making it an ideal month for outdoor activities. As temperatures cool down slightly, nature showcases its vibrant colors, further enhancing the allure of this beautiful mountain town. With September's promise of sunny days, it's the perfect time to explore everything Crested Butte has to offer before the winter chill sets in.
As summer yields to fall, September in Crested Butte experiences a delightful transition in daylight duration, offering about 12 hours of sunlight each day. This marks a subtle decline from the peak of 14 hours reached during the sun-soaked months of June, July, and August. As nature begins its shift toward the vibrant colors of autumn, the diminishing daylight serves as a reminder of the seasonal changes ahead. Following September, the days continue to shorten, dropping to 11 hours in October and further to 10 hours in November, paving the way for the cozy, introspective months of winter. The gradual ebb of daylight not only influences the rhythm of daily life but also enhances the scenic beauty of Crested Butte, inviting residents and visitors to savor the rich tapestry of fall before the snow blankets the landscape.
As summer gives way to autumn in Crested Butte, September experiences a gentle decline in wind speed, averaging 1.8 m/s (4 mph). This subtle decrease follows a summer trend of slightly higher breezes, particularly in July when the winds calmed to the lowest average of 1.6 m/s (4 mph). Throughout the spring and summer months, wind speeds hovered consistently around 2.0 to 2.2 m/s (4 to 5 mph), creating a pleasantly breezy atmosphere. However, as the leaves begin to turn and the crispness of fall sets in, the lighter winds of September reflect the seasonal shift, heralding the arrival of cooler days ahead while maintaining an inviting setting for outdoor exploration.
The weather in Crested Butte 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 Crested Butte and find detailed weather information for every month.
In September, the weather in Crested Butte tends to be milder, with temperatures ranging from a minimum of -6°C (21°F) to a maximum of 26°C (78°F). The average temperature sits at a comfortable 11°C (51°F), and the humidity is relatively moderate at 65%. Precipitation is lower in September, with about 28 mm (1.1 in) falling over 6 days.
Contrastingly, January brings significantly colder temperatures, with a minimum of -26°C (-14°F) and a maximum of only 6°C (43°F). The average temperature drops to -9°C (16°F), and humidity levels rise to 88%, creating a much more wintery atmosphere. Precipitation is also higher in January, totaling 57 mm (2.2 in) over 10 days, indicating a trend toward more frequent snow events. For more details, you can visit Crested Butte weather in January.
September and February present strikingly different weather patterns. September typically features a milder temperature range, with minimums around -6°C (21°F), an average of 11°C (51°F), and maximums reaching up to 26°C (78°F). This month sees relatively low precipitation, totaling 28 mm (1.1 in) over about 6 days, and a comfortable humidity level of 65%.
In contrast, February is much colder, with temperatures plummeting to a minimum of -25°C (-13°F) and an average of -8°C (19°F). Maximum temperatures only climb to 11°C (52°F). Precipitation is more frequent in February, totaling 73 mm (2.9 in) across 14 days, and the humidity rises to 87%, creating a notably different atmosphere. For more detailed information, you can refer to Crested Butte weather in February.
When comparing the weather in September and March, it's clear that September offers a more moderate climate with temperatures ranging from a chilly minimum of -6°C (21°F) to a warm maximum of 26°C (78°F), averaging around 11°C (51°F). In contrast, March tends to be much colder, with temperatures hitting a minimum of -21°C (-6°F) and only reaching a maximum of 11°C (52°F), resulting in an average temperature of -3°C (27°F). Additionally, March experiences more precipitation, totaling 69 mm (2.7 in) over 13 days, compared to September's 28 mm (1.1 in) over just 6 days. The humidity also differs, being higher in March at 81% versus September's 65%. For a deeper look at what to expect, check out Crested Butte weather in March.
When comparing the weather in September and April, it's clear that September is generally much warmer and drier. In September, temperatures range from a minimum of -6°C (21°F) to a pleasant maximum of 26°C (78°F), with an average of 11°C (51°F) and only 28 mm (1.1 in) of precipitation over about 6 days. In contrast, April experiences cooler temperatures, with a minimum of -17°C (1°F), an average of 0°C (33°F), and a maximum of 13°C (56°F). Additionally, April sees significantly more precipitation, totaling 56 mm (2.2 in) over approximately 12 days, coupled with higher humidity levels at 76%. For a more detailed look at the weather conditions in Crested Butte during April, check out Crested Butte weather in April.
In comparing September and May weather, September tends to feature warmer temperatures with a comfortable average of 11°C (51°F) and a maximum reaching up to 26°C (78°F), while May has cooler conditions, with an average of 4°C (40°F) and a maximum of 21°C (70°F). Precipitation is more pronounced in May, totaling 47 mm (1.9 in) over 9 days, compared to September's lighter 28 mm (1.1 in) spread across 6 days. Despite this, both months share a similar humidity level, hovering around 65-66%. For a detailed look at the specific weather patterns and conditions, you can check Crested Butte weather in May.
In comparing the weather of September and June, we see that both months feature similar average temperatures around 11°C (51°F), but with September experiencing a wider range, with a minimum of -6°C (21°F) and a maximum of 26°C (78°F). June, on the other hand, has slightly warmer temperatures, ranging from a minimum of -5°C (23°F) to a maximum of 27°C (80°F). Precipitation levels are comparable, with September receiving 28 mm (1.1 inches) over 6 days, while June has slightly less rainfall at 23 mm (0.9 inches) for 5 days. Additionally, humidity is higher in September at 65%, compared to 58% in June, contributing to the perception of a cooler, crisper atmosphere as summer transitions into fall. For more specific information about the June climate, you can visit Crested Butte weather in June.
In comparing the weather between September and July, one can observe some notable differences. September tends to offer a wider temperature range, with minimums dropping to -6°C (21°F) and maximums reaching up to 26°C (78°F), leading to an average of 11°C (51°F). In contrast, July experiences milder temperatures, ranging from a minimum of 1°C (33°F) to a maximum of 27°C (81°F), resulting in a higher average of 15°C (59°F).
Precipitation levels also vary significantly; September sees 28 mm (1.1 in) of rainfall over 6 days, while July has higher precipitation at 52 mm (2.1 in) spread across 11 days. Additionally, September's relative humidity is higher at 65%, compared to July's 52%, which contributes to a difference in overall comfort levels.
For those interested in more details about July weather, you can check Crested Butte weather in July.
In comparing the weather of September to August, September exhibits a broader temperature range, with minimums dropping to -6°C (21°F) and maximums remaining steady at 26°C (78°F). The average temperature in September is slightly lower at 11°C (51°F), compared to August's 14°C (58°F). Precipitation in September is marginally higher at 28 mm (1.1 in), spread over 6 days, while August sees a total of 23 mm (0.9 in) over 7 days, indicating a slightly wetter month. Moreover, September's humidity averages 65%, which is noticeably higher than August's 56%. For more detailed insights, you can check the Crested Butte weather in August.
In September, the weather typically presents a more moderate temperature range, with a minimum of -6°C (21°F), an average of 11°C (51°F), and a maximum of 26°C (78°F). The month experiences average precipitation of 28 mm (1.1 in) over about six days and maintains a humidity level of 65%. In contrast, October brings a marked shift to colder conditions, recording lows of -28°C (-19°F) and an average temperature plummeting to 2°C (36°F), with a maximum reaching only 20°C (68°F). The precipitation also increases, totaling 48 mm (1.9 in) across ten days, and humidity rises to 76%. This significant change in weather patterns emphasizes the transition into the heart of the colder season. For more detailed insights, you can check the Crested Butte weather in October.
September offers a milder climate with temperatures ranging from a minimum of -6°C (21°F) to a maximum of 26°C (78°F), averaging 11°C (51°F). The month sees relatively low precipitation at 28 mm (1.1 in) over six days and a moderate humidity level of 65%. In contrast, November brings a significant drop in temperatures, with lows reaching -27°C (-16°F) and an average of -5°C (24°F). The maximum temperature in November is 13°C (56°F), and while precipitation increases to 45 mm (1.8 in) over seven days, humidity also rises to 82%. This shift emphasizes the transition from the warmer, drier conditions of September to the colder, wetter climate characteristic of November. For more details, visit Crested Butte weather in November.
In September, the weather is relatively mild, with temperatures ranging from a minimum of -6°C (21°F) to a maximum of 26°C (78°F) and an average of 11°C (51°F). It experiences limited precipitation of 28 mm (1.1 in) over about six days and maintains a humidity level of 65%. In contrast, December brings a stark change, with temperatures dropping significantly, featuring a minimum of -30°C (-22°F) and a maximum of 9°C (49°F), resulting in an average of -9°C (15°F). Precipitation increases to 61 mm (2.4 in) over approximately eleven days, and humidity rises to 89%. For more detailed information, visit Crested Butte weather in December.
As summer transitions into fall, September in Crested Butte showcases a delightful mix of mild temperatures and refreshing crispness. With maximum highs reaching a pleasant 26°C (78°F), and cooler average temperatures, this month stands out as a perfect time for outdoor activities before the winter chill sets in. Although rain graces the region on approximately six days, the overall precipitation remains moderate, adding to the rich tapestry of autumn foliage. The 65% humidity enhances the invigorating mountain air, making September a unique period that beautifully contrasts with the warmer summer months and the impending cold of winter. For more insights into the changing seasons, feel free to explore the Crested Butte Climate.