Last updated: February 24, 2025
In September, Leadville, Colorado experiences a unique blend of crisp mountain air and changing seasonal colors. With maximum temperatures reaching up to 23°C (73°F) and an average of 8°C (46°F), the days remain pleasantly warm while the nights can dip to a brisk -11°C (13°F). This month sees around 44 mm (1.7 in) of precipitation spread over 9 days, contributing to the lush landscapes typical of early autumn. Additionally, the humidity level of 65% adds a refreshing quality to the atmosphere, making September a delightful time to explore the natural beauty of this scenic town.
In September, Leadville experiences a notable shift as summer fades into autumn, with temperatures gradually cooling down. The minimum temperature hovers around -11°C (13°F), while the average rises to a comfortable 8°C (46°F), peaking at a maximum of 23°C (73°F). This month offers a pleasant balance, easing from the warmth of summer days into crisp fall evenings, inviting outdoor exploration in the vibrant landscape. As September progresses, the air becomes crisper, signaling the onset of colder months ahead, yet it retains a lingering warmth that makes it one of Leadville's more enjoyable times of the year.
In September, Leadville experiences a modest precipitation total of 44 mm (1.7 in), marking a slight decline from the summer months. With just 9 days of rainfall, this month signals a transition towards drier conditions as the region ushers in the fall season. September's precipitation, while lower compared to the 101 mm (4.0 in) recorded in July, still contributes to the overall moisture that sustains the area's vibrant ecosystem. This trend of decreasing rainfall continues in October, promising a crisp and clear autumn as the landscape prepares for potential early snows.
As September arrives in Leadville, United States, the air begins to feel a bit more humid, with levels reaching 65%. This marks a noticeable increase from the drier summer months of July and August, which saw humidity levels dipping as low as 52%. However, September's humidity is still a decrease compared to the spring months, where levels were significantly higher. Observing the yearly trend, the transition towards fall brings about a gradual rise in humidity, peaking again in late autumn and winter, peaking at 89% in December. This pattern reflects the town's seasonal shift from the dry warmth of summer to the cooler, more moisture-laden months ahead.
As summer transitions into fall, Leadville experiences a slight dip in the UV Index, which remains notably high at 11 in September. This categorization falls within the extreme exposure category, necessitating vigilance for sun exposure, with a burn time of just 10 minutes for unprotected skin. Following a peak in June with a UV Index of 15, September still brings significant sun intensity, emphasizing the importance of protective measures. This trend reflects a consistent pattern throughout the warmer months, where values often hit extreme levels, particularly from April through August. As you plan your outdoor activities, be sure to stay informed about sun safety, and check out the detailed forecast at Leadville UV Index.
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As the warm embrace of September arrives in Leadville, the town basks in 315 hours of sunshine, marking a gentle transition from the summer's peak. This month showcases a delightful balance, comfortably nestled between the vibrant days of June and July, which boast over 380 hours of sun. While September's sunlight does begin to wane compared to the lush glow of summer, it remains notably brighter than the cooler months ahead, signaling the gradual shift into fall. The downward trend in sunlight hours as the year progresses is evident, but this rich September sunshine reminds residents that the warmth lingers, creating perfect moments for outdoor adventures before winter's chill takes hold.
As September unfolds in Leadville, the likelihood of sunny weather rises to an inviting 66%, making it a delightful time for outdoor activities. This month stands out with a notable increase in sunshine compared to the summer's fluctuating patterns; while July and August offer 46% and 64% chances of sun respectively, September comfortably leads into fall with its brighter disposition. The trend indicates a transition from summer's heat to the crispness of autumn, allowing residents and visitors to relish the colorful landscapes under a generally favorable sky. This ascent in sunny chances also sets a pleasant tone for the upcoming months, as October still enjoys a commendable 56% chance of sunshine.
As September emerges in Leadville, the days begin to subtly shorten, offering about 12 hours of daylight. This transitional month marks a gentle decline from the peak brightness of summer, where June, July, and August basked in a generous 14 hours of sunshine. The gradual decrease in daylight reflects the shift towards fall, creating a beautiful interplay of light and shadow that enhances the stunning mountain vistas. Following the warmth of summer, the crispness of early autumn air and the changing leaves invite outdoor exploration, even as daylight dwindles. With each passing day, Leadville inches closer to the cozy, shorter days of October, echoing the natural cycle of the seasons in this vibrant locale.
As September arrives in Leadville, the wind whispers a gentle reminder of the transition into autumn. With an average wind speed of 2.0 m/s (4 mph), the breezes are mild, tapering off from the summer's soft gusts. Notably, this marks a continuation of the low-speed trends seen since June, where the winds have generally settled into a more tranquil rhythm. Throughout the year, wind speeds typically peak in the colder months; however, September's calm signals a brief pause before the winds pick up again in October and November. As the days grow shorter and the leaves begin to turn, the soothing September wind invites residents and visitors alike to enjoy the serene beauty of Leadville's landscape.
The weather in Leadville 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 Leadville and find detailed weather information for every month.
September and January present stark contrasts in weather. September typically experiences milder temperatures, ranging from a low of -11°C (13°F) to a high of 23°C (73°F) with an average of 8°C (46°F). In contrast, January's temperatures are much colder, with a minimum of -26°C (-14°F), an average of -10°C (14°F), and a maximum of just 5°C (42°F). While both months see similar precipitation levels—around 44 mm (1.7 in)—January has slightly more rainy days (10 compared to September's 9), which, combined with higher humidity (88% in January versus 65% in September), contributes to a distinctly chillier atmosphere. For a deeper dive into January conditions, you can refer to Leadville weather in January.
September and February present stark contrasts in weather. September experiences milder temperatures, ranging from a minimum of -11°C (13°F) to a maximum of 23°C (73°F), with an average of 8°C (46°F). The month sees less precipitation, totaling 44 mm (1.7 in) over about 9 days, coupled with a moderate humidity of 65%. In contrast, February is much colder, with temperatures dipping as low as -27°C (-17°F) and averaging -10°C (15°F), reaching a maximum of just 9°C (49°F). Additionally, February is wetter, receiving 59 mm (2.3 in) of precipitation across 13 days and exhibiting higher humidity at 87%. For more detailed information, you can check out Leadville weather in February.
When comparing the weather in September and March, significant differences emerge. September experiences milder temperatures, with a minimum of -11°C (13°F) and a maximum of 23°C (73°F), resulting in an average of 8°C (46°F). In contrast, March is much colder, with temperatures ranging from a minimum of -23°C (-10°F) to a maximum of 10°C (50°F), and an average of -5°C (23°F). Precipitation is also notably different; September records 44 mm (1.7 in) over 9 days, while March has higher precipitation at 65 mm (2.6 in) over 13 days. Additionally, March generally has a higher humidity level of 81% compared to September's 65%. For a more detailed look at the temperatures and conditions, you can check Leadville weather in March.
In comparing the weather of September and April, notable differences emerge in temperature and precipitation patterns. September enjoys milder temperatures, ranging from a minimum of -11°C (13°F) to a maximum of 23°C (73°F), with an average of 8°C (46°F). In contrast, April experiences colder temperatures, with a minimum of -19°C (-2°F) and an average high of only 11°C (52°F). Precipitation is also more prevalent in April, totaling 71 mm (2.8 in) over about 13 days, compared to September's 44 mm (1.7 in) across 9 days. Furthermore, April has a higher humidity level at 76%, indicating a wetter atmosphere than September's 65%. For more detailed insights, check out the Leadville weather in April.
September and May exhibit distinct weather patterns, reflecting the transition from summer to autumn and the lingering chill of late spring, respectively. In September, temperatures range from a minimum of -11°C (13°F) to a maximum of 23°C (73°F), with an average temperature of 8°C (46°F). This month sees about 44 mm (1.7 in) of precipitation over 9 days, and humidity levels are typically around 65%. In contrast, May features cooler conditions, with minimum temperatures of -12°C (11°F), an average of 2°C (36°F), and a maximum of 18°C (64°F). Precipitation in May rises to 72 mm (2.8 in) spread over 13 days, and humidity slightly increases to 66%. For those interested in knowing more about the specific conditions, visit Leadville weather in May.
When comparing the weather in September to that of June, we notice some similarities and differences. Both months have a similar average temperature of around 8°C (46°F), but September experiences slightly warmer maximum temperatures, reaching up to 23°C (73°F) compared to June's 24°C (75°F). The precipitation levels are quite comparable as well, with September receiving 44 mm (1.7 in) of rainfall on 9 days, while June has 45 mm (1.8 in) over 10 days. Additionally, September's humidity is a bit higher at 65%, contrasting with June's 58%. For a more detailed overview, you can check out Leadville weather in June.
September and July exhibit notable differences in weather patterns. In September, temperatures range from a minimum of -11°C (13°F) to a maximum of 23°C (73°F), with an average of 8°C (46°F). This month experiences less humidity at 65% and sees approximately 44 mm (1.7 in) of precipitation over 9 days. Conversely, July presents slightly warmer conditions with a minimum of -3°C (28°F) and a maximum of 24°C (75°F), averaging 12°C (53°F). However, it is much wetter, as it receives 101 mm (4.0 in) of precipitation across 16 days and has lower humidity at 52%. For more detailed insights into July's climate, refer to Leadville weather in July.
When comparing the weather in September to August, September tends to be slightly cooler, with average temperatures ranging from a minimum of -11°C (13°F) to a maximum of 23°C (73°F), while August experiences a warmer minimum of 0°C (33°F) and the same maximum temperature. Precipitation also plays a role; September sees 44 mm (1.7 in) of rain over 9 days, compared to August's 58 mm (2.3 in) over 12 days, indicating that September is slightly drier. Additionally, humidity levels are higher in September at 65%, while August maintains a lower humidity of 56%. For more detailed information on August weather, you can check Leadville weather in August.
September and October exhibit a notable shift in weather patterns. In September, temperatures range from a minimum of -11°C (13°F) to a maximum of 23°C (73°F), with an average temperature of 8°C (46°F) and 44 mm (1.7 in) of precipitation over 9 days. Conversely, October sees a dramatic drop in temperatures, with a minimum of -25°C (-12°F) and an average of 0°C (31°F), peaking at 18°C (64°F). This month also experiences slightly higher precipitation at 54 mm (2.1 in) over the same number of rainy days, while humidity increases to 76%. For those looking to understand more about the October climate specifics, check out Leadville weather in October.
September and November exhibit stark differences in weather conditions. In September, temperatures range from a minimum of -11°C (13°F) to a maximum of 23°C (73°F), with an average of 8°C (46°F), and a total precipitation of 44 mm (1.7 in) over 9 days, accompanied by a humidity level of 65%. In contrast, November sees much colder conditions, with minimum temperatures plummeting to -26°C (-14°F) and a maximum of only 11°C (52°F), averaging -6°C (21°F). Precipitation in November is slightly lower at 41 mm (1.6 in) over 7 days, but humidity rises significantly to 82%. For more detailed information, you can check Leadville weather in November.
In September, temperatures in Leadville fluctuate significantly, with a minimum of -11°C (13°F) and a pleasant average of 8°C (46°F), peaking at 23°C (73°F). The month experiences moderate precipitation, totaling 44 mm (1.7 in) across about 9 days, accompanied by a humidity level of 65%. In contrast, December brings much harsher conditions, with lows plunging to -28°C (-18°F) and an average temperature of -10°C (14°F), only reaching a maximum of 9°C (48°F). December also sees similar precipitation levels at 44 mm (1.8 in) over 10 days, but the humidity rises significantly to 89%. For more detailed information, check out Leadville weather in December.
As summer transitions into fall, September in Leadville offers a unique blend of cool temperatures and increasing moisture, distinguishing it from the balmy months preceding it. With average highs of 23°C (73°F) giving way to chillier nights, the crisp air becomes a refreshing signal of autumn's arrival. While September does see an uptick in precipitation, marked by about nine days of rain, the overall humidity level remains a comfortable 65%. This delightful shift in weather makes September an ideal time to explore the vibrant fall foliage and enjoy the scenic beauty that surrounds Leadville. For a comprehensive understanding of the region’s climatic patterns, check out Leadville Climate.