September Weather in Buena Vista, United States

Last updated: February 24, 2025

In September, Buena Vista experiences a delightful range of weather, showcasing a maximum temperature of 26°C (79°F) and an average of 9°C (49°F). Visitors can expect cooler evenings, with minimum temperatures dropping to -8°C (17°F). Rainfall is a modest 35 mm (1.4 in) over 7 days, contributing to a humidity level of 65%, which makes the air feel refreshing yet crisp. This month offers a perfect blend of mild days and cool nights, ideal for outdoor adventures in the stunning natural landscape.

September Temperature in Buena Vista

As September unfolds in Buena Vista, temperatures begin to hint at the impending chill of autumn. The month starts with a minimum temperature of -8°C (17°F), gradually rising to an average of 9°C (49°F), and peaking at a max of 26°C (79°F). This transition marks a significant warming trend compared to the earlier months, particularly notable as summer's warmth lingers just a bit longer before the cold sets in. The average temperature of 9°C reflects a charming contrast from the severe winters, offering a refreshing reprieve. As September progresses, the crispness in the air and vibrant fall colors signal that winter is not far behind, making it a perfect time for outdoor explorations amid the region's stunning landscape.

September Weather in Buena Vista: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Buena Vista, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec151625303951575549352314
Data source: Temperature data for Buena Vista 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 Buena Vista

In September, Buena Vista experiences a gentle decline in precipitation, receiving 35 mm (1.4 in) over approximately 7 days. This marks a slight decrease from the summer months, where July saw a notable surge of 83 mm (3.3 in). As the city transitions into autumn, precipitation patterns show a trend of diminishing rainfall, aligning with the shifting seasons, and reflecting a typical September scenario. With cooler temperatures on the horizon, the drier days ahead promise a refreshing change, inviting residents to enjoy the crispness of fall while savoring the last remnants of summer.

September Precipitation Trends in Buena Vista

The chart displays monthly precipitation patterns in Buena Vista, 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.
JanFebMarAprMayJunJulAugSepOctNovDec344545426038844435443234
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Buena Vista

In September, humidity in Buena Vista begins to rise again after the drier summer months, settling at a comfortable 65%. This marks a gentle transition from the low of 52% in July and 58% in June, indicating the area's shift towards moister conditions typical of autumn. As the year progresses, humidity levels fluctuate, peaking in the winter months with 88% in January and 89% in December. Comparatively, September's humidity reflects an intermediate level that hints at the lushness of the fall season ahead, creating a refreshing balance after the summer's dry embrace. The gradual increase in moisture sets the stage for a vibrant landscape as Buena Vista approaches the end of the year.

September Average Humidity in Buena Vista

This chart illustrates the average monthly humidity levels in Buena Vista, 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.
JanFebMarAprMayJunJulAugSepOctNovDec88%87%81%76%67%58%52%56%65%76%82%89%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Buena Vista

In September, Buena Vista experiences a notable UV Index of 11, categorizing it as extreme with a burn time of just 10 minutes. This marks a slight decline from the peak summer months of June and July, which saw the highest indices at 14 and 13, respectively. However, the intensity of the sun remains significant, urging residents and visitors alike to take necessary precautions. A consistent trend through the latter part of the year reveals a gradual decrease in UV exposure, with indices dropping to 7 by October. As September transitions into fall, it’s essential to stay vigilant about sun protection. For more detailed insights and seasonal trends, visit Buena Vista UV Index.

Maximum UV Index Levels in Buena Vista for September

The chart shows the monthly maximum UV Index (UVI) for Buena Vista 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.
JanFebMarAprMayJunJulAugSepOctNovDec4710131314131211764
Data source: Buena Vista 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 Buena Vista

As September rolls into Buena Vista, the sun continues to shine brightly, offering 311 hours of radiant daylight. This marks a notable dip from the summer peaks, where June and July basked in 378 and 370 hours, respectively. However, compared to the earlier months of the year, September still boasts a generous amount of sunshine, standing out as one of the top months for sunlight alongside May and April. As the warmth of summer gradually fades, the golden hues of fall arrive, inviting residents and visitors alike to savor outdoor activities in the beautiful Colorado landscape while enjoying the lingering sunshine.

Monthly Sunshine Duration in Buena Vista: September Highlighted

The September sunshine duration represents the total number of hours Buena Vista 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.
JanFebMarAprMayJunJulAugSepOctNovDec182h231h293h324h360h378h370h351h311h284h249h231h
Data source: Buena Vista September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Buena Vista During September

In Buena Vista, September stands out as a promising month for sunshine, boasting a 69% chance of clear skies. This marks a noticeable uptick compared to the summer months, where the likelihood hovered around the mid-forties to sixties. As the summer heat begins to wind down, September offers a delightful transition with its increased sunshine. Following August's 66%, the progression into early autumn highlights a weather trend that leans more favorable for outdoor activities. Overall, as September unfolds, residents and visitors can look forward to warmer, sunnier days, making it an ideal time to enjoy the natural beauty of Buena Vista.

Percentage of Sunny Days in September in Buena Vista

The chart illustrates the percentage of sunny days in Buena Vista 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 Buena Vista experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec56%48%50%59%47%57%49%66%69%62%67%56%
Data source: Buena Vista September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Buena Vista in September

As September unfolds in Buena Vista, daylight begins to wane, averaging 12 hours of sunshine per day. This marks a gentle transition from the vibrant long days of summer—where sunlight peaked at 14 hours in June, July, and August—into the shorter days of fall. While the daylight duration in September remains relatively generous compared to the deeper winter months, it signals the first notable decrease after the highs of summer. As the year progresses towards October, which offers 11 hours of daylight, residents can embrace the beauty of changing seasons while enjoying the comfortable warmth of early autumn sunsets.

Average Daylight Hours in Buena Vista for September

The chart illustrates the variation in daylight duration in Buena Vista throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 47m10h 45m11h 58m13h 14m14h 18m14h 49m14h 32m13h 35m12h 22m11h 7m10h 1m9h 28m
Data source: Buena Vista daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Buena Vista

As September arrives in Buena Vista, the wind begins to whisper gently at an average speed of 2.0 m/s (4 mph), subtly marking the transition from the summer's stillness to the briskness of autumn. This slight uptick from the quieter months of mid-summer reflects a gradual reawakening of the winds, as the region gears up for the seasonal shifts ahead. While comparable to the stillness felt in July and August, September's breeze hints at the return of livelier gusts, paving the way for a refreshing October that boasts a bit more vigor at 2.3 m/s (5 mph). Overall, September serves as a delicate bridge, hinting at nature's dynamic changes while maintaining a serene, softly swaying ambiance.

Average September Wind Speed in Buena Vista

The chart displays monthly wind speed patterns in Buena Vista, 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.
JanFebMarAprMayJunJulAugSepOctNovDec2.32.72.32.32.21.91.61.92.0 m/s2.32.42.7
Data source: Buena Vista September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Buena Vista Compares to Other Months

The weather in Buena Vista 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 Buena Vista and find detailed weather information for every month.

In comparing the weather of September and January, it's clear that January is significantly colder. September experiences a more moderate temperature range with minimums of -8°C (17°F), averages of 9°C (49°F), and maximums reaching 26°C (79°F). In contrast, January's temperatures plummet to a minimum of -30°C (-21°F), with an average of -10°C (15°F) and a maximum of just 6°C (44°F). Both months receive similar amounts of precipitation, around 35 mm in September and 33 mm in January, with precipitation occurring on approximately 7 days in each month. However, January is notably more humid at 88%, compared to September's 65%. For more details on weather conditions specific to January, visit Buena Vista weather in January.

September and February present a striking contrast in weather conditions. In September, temperatures range from a chilly -8°C (17°F) at their lowest to a warm average of 9°C (49°F) and can peak at 26°C (79°F), accompanied by relatively low precipitation of 35 mm (1.4 in) over 7 days, with humidity at a moderate 65%. Conversely, February is significantly colder, with temperatures plunging to a minimum of -30°C (-22°F), an average of -9°C (17°F), and a maximum of only 11°C (52°F). This month also sees increased precipitation at 45 mm (1.8 in) over 10 days, paired with higher humidity levels of 87%. For more detailed information on February weather, check out Buena Vista weather in February.

In comparing the weather of September and March, a distinct contrast emerges. September experiences milder temperatures with a minimum of -8°C (17°F) and an average of 9°C (49°F), peaking at a warm 26°C (79°F). The precipitation during this month totals 35 mm (1.4 in) over about 7 days, coupled with a relatively moderate humidity of 65%. In contrast, March is significantly colder, with temperatures dropping as low as -22°C (-8°F) and averaging -4°C (25°F), reaching a maximum of only 11°C (52°F). Additionally, March sees slightly higher precipitation at 45 mm (1.8 in) over 9 days, with humidity increasing to 81%. For more details on March conditions in Buena Vista, you can check Buena Vista weather in March.

When comparing the weather in September and April, we see notable differences in temperature and overall conditions. September experiences a wider temperature range with minimums around -8°C (17°F) and maximums reaching 26°C (79°F), resulting in a pleasant average of 9°C (49°F). In contrast, April tends to be chillier, with minimum temperatures plummeting to -19°C (-2°F) and maximums only reaching 13°C (56°F), averaging at -1°C (31°F). Additionally, while September receives 35 mm (1.4 in) of precipitation over about 7 days, April sees a slightly higher 42 mm (1.6 in) over 9 days, coupled with increased humidity at 76%. For more detailed information about April's weather, check out Buena Vista weather in April.

In September, weather conditions tend to be milder than in May, with average temperatures reaching around 9°C (49°F) and maximums hitting 26°C (79°F). In contrast, May sees cooler averages of 4°C (39°F), with highs around 21°C (70°F) and a deeper chill reflected in its minimum temperatures of -14°C (7°F). Precipitation levels also differ, with September receiving 35 mm (1.4 in) over approximately 7 days, while May experiences more rainfall at 60 mm (2.4 in) across 10 days. Humidity remains quite similar in both months, hovering around 65% in September and 66% in May, making for a generally damp atmosphere. For more specific details on May conditions, visit Buena Vista weather in May.

September and June in Buena Vista showcase similar temperature ranges, with both months experiencing maximums around 26°C (79°F). However, September tends to be slightly cooler on average, with temperatures dipping down to a minimum of -8°C (17°F), compared to June's -6°C (21°F). In terms of precipitation, September receives 35 mm (1.4 in) over about 7 days, while June sees a bit more, with 38 mm (1.5 in) across 8 days. Additionally, September's humidity is higher at 65%, compared to June’s 58%, making September feel a bit more humid. For a detailed look at June weather, you can visit Buena Vista weather in June.

The weather in September tends to be cooler than in July, with September experiencing a minimum temperature of -8°C (17°F) compared to July's -1°C (30°F). While the average temperature in September is 9°C (49°F), July sees a warmer average of 14°C (57°F), peaking at a maximum of 26°C (79°F) in September versus 27°C (81°F) in July. Rainfall is notably higher in July, with 83 mm (3.3 in) over 15 days, compared to September's 35 mm (1.4 in) over just 7 days. Additionally, September has a higher humidity level at 65% compared to July's 52%. For a detailed look at the weather in July, you can check Buena Vista weather in July.

September's weather featured a broader temperature range, with minimums dipping to -8°C (17°F) and maximums reaching 26°C (79°F), while the average temperature settled at 9°C (49°F). In contrast, August maintained milder conditions, with minimum temperatures at 2°C (35°F) and an average of 13°C (56°F), although it still experienced similarly high maximum temperatures of 26°C (78°F). Additionally, September recorded slightly less precipitation at 35 mm (1.4 in) over 7 days, compared to August's 44 mm (1.7 in) over 9 days, all while experiencing a higher humidity level of 65% versus August's 56%. For more detailed information, you can check Buena Vista weather in August.

September experiences a broader temperature range, with minimums around -8°C (17°F) and maximums reaching 26°C (79°F), while the average temperature sits at 9°C (49°F). In contrast, October brings significantly colder conditions, with minimum temperatures plummeting to -25°C (-12°F) and an average of just 2°C (35°F). Both months see some precipitation, with September receiving 35 mm (1.4 in) over 7 days and October slightly wetter at 44 mm (1.7 in) over 9 days. Furthermore, October tends to have higher humidity levels at 76%, compared to September’s 65%. For more detailed insights on this month, check out Buena Vista weather in October.

September and November present stark contrasts in weather conditions. In September, temperatures range from a mild -8°C (17°F) to a warm maximum of 26°C (79°F), with an average of 9°C (49°F). The month experiences relatively low precipitation, totaling 35 mm (1.4 in) over 7 days, and a comfortable humidity level of 65%. In contrast, November brings a significant drop in temperatures, with lows plunging to -28°C (-19°F) and an average temperature of -5°C (23°F). Although precipitation decreases slightly to 32 mm (1.2 in) over just 6 days, humidity levels rise to 82%, making the air feel much colder. For more details on what to expect, check out the Buena Vista weather in November.

In September, temperatures range from a chilly minimum of -8°C (17°F) to a pleasant maximum of 26°C (79°F), with an average of 9°C (49°F). The month experiences moderate precipitation of 35 mm (1.4 in) over about 7 days, accompanied by a humidity level of 65%. In stark contrast, December sees much colder temperatures, with a minimum plunging to -31°C (-24°F) and an average of -10°C (14°F), while the maximum only reaches 12°C (53°F). Despite slightly lower precipitation of 34 mm (1.3 in) over 9 days, the humidity soars to 89%, creating a distinctly frosty environment. For more details on the December climate, you can explore Buena Vista weather in December.

Compare Buena Vista's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Buena Vista

As September rolls in, Buena Vista experiences a delightful shift in weather, transitioning from the warmth of summer to the crispness of autumn. With temperatures reaching a maximum of 26°C (79°F), this month offers a wonderful opportunity for outdoor activities. However, as nights bring a chill, the average drops to around 9°C (49°F), and frosty mornings can surprise early risers. Unlike the drier summer months, September sees a bit more rainfall, with about 35 mm (1.4 in) spread over seven days, adding a refreshing touch to the vibrant autumn landscape. The day's lingering warmth, when combined with the 65% humidity, creates a cozy and inviting atmosphere that marks the transition into fall. For those looking to plan their visit or simply curious about the changing seasons, more details can be found at Buena Vista Climate.