Last updated: February 24, 2025
September in Golden, United States showcases a vibrant transition from the heat of summer to the refreshing coolness of autumn. With a maximum temperature reaching 33°C (91°F) and an average daily warmth of 15°C (60°F), residents experience a mix of warm days and crisp nights. As temperatures dip to a minimum of -5°C (23°F), the month also presents a moderate precipitation level of 47 mm (1.9 in) over nine days, contributing to the lush local scenery. Coupled with a humidity level of 65%, this month offers a unique blend of cozy warmth and invigorating freshness, inviting outdoor activities amid the stunning backdrop of changing leaves.
As September settles in Golden, United States, temperatures begin to reflect the transition towards autumn. With a minimum of -5°C (23°F) and an average of 15°C (60°F), the month retains a hint of summer's warmth, peaking at a comfortable 33°C (91°F). This marks a slight dip from the steamy highs of July and August, yet offers pleasantly mild days for outdoor activities. The threaded warmth invites residents and visitors alike to savor the brilliant fall colors without the biting chill characteristic of later months, making September a beautifully transitional time for the region.
In September, Golden, United States, experiences a modest precipitation total of 47 mm (1.9 in) over approximately 9 days of rainfall. This amount is a slight decline from the wetter months preceding it, particularly May, which recorded 140 mm (5.5 in), indicating the transition into drier autumn weather. Notably, September's precipitation is fairly consistent with October's, which is also marked by 49 mm (1.9 in), suggesting a gradual tapering off as the region prepares for winter. The shift in weather is evident as the number of rainy days also decreases from the peak summer months, making September an interesting blend of lingering warmth and the onset of autumn—a true reflection of nature's changing canvas.
As summer transitions into fall, September in Golden, United States, offers a subtle increase in humidity, with levels rising to 65%. This marks a notable shift from the more arid summer months of July and August, which recorded 52% and 56% humidity, respectively. The characteristic dryness of late summer gradually gives way to the humid conditions reminiscent of earlier months in the year. While still lower than the winter peaks, September serves as a reminder of the changing seasons, as humidity levels begin to align more closely with those seen in the spring and early fall. The gradual increase reflects nature's rhythm, hinting at the cooler, wetter months to come as the region prepares for October's 76% humidity and the refreshing embrace of autumn.
In September, Golden experiences a UV Index of 10, placing it in the very high exposure category, which means that sunburn can occur in as little as 15 minutes of unprotected sun exposure. This trend marks a gradual decrease from the extreme levels seen in the summer months of June through August, which consistently registered a UV Index of 12. As the seasons shift towards fall, the UV Index begins to decline, transitioning to high levels in October. It's important for residents and visitors to remain vigilant about sun protection during this transitional month, especially as outdoor activities ramp up with cooler weather. For more detailed information on UV levels throughout the year, check out Golden UV Index.
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In Golden, United States, September shines brightly with an impressive 310 hours of sunshine, maintaining a pleasant glow as summer transitions to fall. This month marks a gentle decline from the sun-soaked heights of July and August, which boasted 375 and 352 hours respectively, yet it still stands out as a favorable time for basking in warm light. As the year progresses, sunshine begins to taper off in October, dropping to 276 hours, showcasing a clear seasonal trend where the sun gradually retreats. Despite this decrease, September retains a vibrant charm, offering ample opportunities for outdoor activities and appreciation of the beautiful, warm days before the cooler months arrive.
In Golden, United States, September marks a notable uptick in the likelihood of sunny weather, boasting a 68% chance of sunshine. This increase follows the peak of summer, where August also enjoys higher sunshine probability at 65%. As we transition from the warm days of summer, September's sun-filled days signal a delightful shift, leading into a milder October that still retains a healthy 65% chance of clear skies. The trend indicates that as we approach fall, the chances for sunny weather remain strong, making September an ideal time to enjoy the outdoors before the chill of winter sets in.
As summer fades and autumn begins, September in Golden, United States sees a gentle decrease in daylight hours, offering about 12 hours of sunshine—a slight decline from the peak of 14 hours in the summer months. This transition marks the shift from the long, sunlit days of June, July, and August to the shorter, crisper days of fall. The overall trend reflects the gradual dimming of daylight, as daylight averages dip from 14 hours in summer to around 11 hours by October, setting the stage for the cozy, atmospheric days of autumn ahead. Enjoy the lingering warmth of early fall, as daylight slowly surrenders to the longer nights of winter.
As September rolls into Golden, the average wind speed settles at a gentle 2.3 m/s (5 mph), maintaining the soft breeziness characteristic of late summer. This slight uptick from the summer months shows a subtle transition as the air begins to cool. Comparing it to the earlier months of the year, it's clear that winds have remained relatively mild throughout, with a gradual increase noticeable as the year progresses. The trend suggests a shift towards stronger gales in the coming months, particularly noticeable by November when winds pick up to 2.9 m/s (7 mph). As the crisp autumn air settles in, the calming September winds prepare the landscape for the brisk breezes that define the later fall season.
The weather in Golden 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 Golden and find detailed weather information for every month.
In September, the weather showcases a more moderate temperature range with a minimum of -5°C (23°F) and an average of 15°C (60°F), peaking at a warm 33°C (91°F). The month experiences some precipitation, totaling 47 mm (1.9 in) over approximately 9 days, while humidity sits at a comfortable 65%.
In contrast, January brings much colder conditions, with temperatures dipping significantly lower; the minimum reaches -24°C (-11°F) and averages around -3°C (27°F), with a maximum of just 16°C (60°F). Precipitation decreases to 26 mm (1.0 in) across about 5 days, but the humidity increases to a notable 88%. The stark differences between these months highlight the seasonal variations that define the region's climate. For more details on January weather, check Golden weather in January.
September and February present a striking contrast in weather conditions. September boasts a wider temperature range, with minimums around -5°C (23°F) and maximums reaching an inviting 33°C (91°F), contributing to an average of 15°C (60°F). Meanwhile, February experiences much colder temperatures, dipping to a minimum of -27°C (-17°F) and peaking at a relatively mild 21°C (69°F), leading to an average of -4°C (26°F).
Precipitation levels are also noteworthy; September sees 47 mm (1.9 in) spread over 9 days, while February has slightly less at 37 mm (1.5 in) over 8 days, but with higher humidity at 87% compared to September's 65%. For a deeper look into February weather, check out Golden weather in February.
September and March present contrasting weather conditions, highlighting the shift from late summer to early spring. In September, temperatures range from a chilly min of -5°C (23°F) to a warm max of 33°C (91°F), with an average of 15°C (60°F). The month sees about 47 mm (1.9 in) of precipitation over approximately 9 days and a humidity level of 65%. In contrast, March experiences much colder temperatures, with a minimum of -21°C (-5°F) and a maximum of 23°C (73°F), averaging just 1°C (35°F). The precipitation increases slightly to 63 mm (2.5 in) across 10 days, accompanied by higher humidity at 81%. For those interested in the beauty of this early spring month, check out Golden weather in March.
September and April present distinctly different weather patterns. In September, temperatures typically range from a chilly -5°C (23°F) at night to a warm 33°C (91°F) during the day, with an average of 15°C (60°F). This month sees about 47 mm (1.9 in) of precipitation over approximately 9 days, with a humidity level of 65%. In contrast, April experiences much colder nights with a minimum temperature of -17°C (1°F) and a daytime maximum of 23°C (73°F), averaging just 5°C (41°F). Rainfall is slightly higher in April, totaling 67 mm (2.6 in) across about 12 days, accompanied by increased humidity at 76%. For those interested in the charm of April weather, check out Golden weather in April.
In September, the weather shows a wider temperature range, with minimums dipping to -5°C (23°F) and maximums soaring to 33°C (91°F), averaging around 15°C (60°F). Conversely, May experiences cooler conditions, with a minimum temperature of -8°C (19°F) and a maximum of 28°C (83°F), resulting in an average temperature of 10°C (50°F). While September has moderate precipitation at 47 mm (1.9 in) over about 9 days, May is notably wetter with 140 mm (5.5 in) across 17 days, contributing to a similarly high humidity level of 66%. For a closer look at the delightful weather conditions during this month, check out Golden weather in May.
In comparing the weather of September and June, we see distinct differences in temperature and precipitation patterns. September experiences a broader temperature range, with minimums dropping to -5°C (23°F) at night, while June remains slightly warmer, with minimums around 2°C (37°F). Both months share a maximum temperature of 33°C (91°F in September and 92°F in June), but September has lower overall humidity levels at 65%, compared to June's 58%. Additionally, June is noticeably wetter, with 84 mm (3.3 in) of precipitation spread over 15 days, whereas September receives less rain—47 mm (1.9 in) over just 9 days. For more information on the pleasant weather typical of June, check out Golden weather in June.
In comparing the weather between September and July, it's clear that September offers a wider range of temperatures, with lows dipping to -5°C (23°F) and highs reaching up to 33°C (91°F). The average temperature in September is around 15°C (60°F), making it cooler than July, which has an average of 19°C (67°F). Interestingly, both months experience similar maximum temperatures, but July has more consistent warmth and significantly lower humidity at 52%, compared to September's 65%. Additionally, September sees less precipitation overall—47 mm (1.9 in) over 9 days—while July is wetter, with 90 mm (3.5 in) accumulating over 18 days. For those seeking ideal conditions, Golden weather in July showcases the month's sunny charm.
In comparing the weather between September and August, September experiences a wider temperature range, with minimums dropping to -5°C (23°F) and maximums reaching 33°C (91°F). In contrast, August has milder temperatures, with a minimum of 6°C (43°F) and a maximum of 32°C (90°F). August also sees significantly more precipitation, totaling 72 mm (2.8 in) over 16 days, compared to September’s 47 mm (1.9 in) across 9 days. Additionally, September's humidity is higher at 65%, while August maintains a lower level at 56%. For those looking for pleasant conditions, Golden weather in August highlights the beauty of this summer month.
September and October present a striking contrast in weather patterns. In September, temperatures range from a brisk -5°C (23°F) at night to a warm 33°C (91°F) during the day, making it considerably milder overall with an average of 15°C (60°F). The month sees around 47 mm (1.9 in) of precipitation over 9 days, accompanied by a humidity level of 65%.
In contrast, October experiences a more significant drop in temperatures, with nighttime lows plummeting to -20°C (-4°F) and an average temperature of only 7°C (44°F). Daytime highs reach a maximum of 26°C (80°F), indicating cooler overall conditions. The precipitation in October slightly increases to 49 mm (1.9 in) over the same number of days, while humidity rises to 76%.
Overall, while both months share similar precipitation levels, October's chilliness and higher humidity create a more formidable autumn atmosphere. For those seeking to enjoy the beauty of this fall season, consider exploring Golden weather in October.
September and November present starkly contrasting weather patterns. In September, temperatures fluctuate significantly, with a minimum of -5°C (23°F) and a maximum of 33°C (91°F), resulting in an average temperature of 15°C (60°F). The month experiences a total precipitation of 47 mm (1.9 in) over 9 days, alongside a moderate humidity level of 65%. In contrast, November brings much colder conditions, marked by a chilling minimum of -17°C (1°F) and an average temperature of only 2°C (36°F). Although it is drier than September, with 29 mm (1.2 in) of precipitation over just 5 days, the humidity climbs to 82%. For more insights into the beauty and character of November weather, you can explore Golden weather in November.
September and December present stark contrasts in weather conditions. In September, temperatures can fluctuate significantly, ranging from a minimum of -5°C (23°F) to a maximum of 33°C (91°F), with an average temperature of 15°C (60°F). This month also sees moderate precipitation of 47 mm (1.9 in) over approximately 9 days, and humidity levels are relatively comfortable at 65%.
In contrast, December experiences much colder temperatures, with a minimum of -20°C (-3°F) and a maximum of 19°C (67°F), resulting in a chilly average of -2°C (30°F). Precipitation decreases to 19 mm (0.7 in) spread over just 5 days, but the humidity rises significantly to 89%. For those looking to explore the unique weather of December, you can learn more about it here: Golden weather in December.
As September unfolds in Golden, the weather reveals a unique charm that sets it apart from other months. The days are pleasantly warm, occasionally soaring to a maximum of 33°C, while cool evenings bring a refreshing contrast with average lows around 15°C. This transitional month experiences more precipitation than the preceding summer, with light rain gracing about 9 days. The humidity hovers at a moderate 65%, adding a touch of crispness to the air that invigorates the senses. Whether you're exploring the golden hues of fall foliage or enjoying outdoor activities, September offers a delightful blend of warmth and cool breezes, making it a perfect time to appreciate the beauty of Golden. For a deeper dive into the weather patterns, visit Golden Climate.