Last updated: February 24, 2025
In Idaho Springs, United States, the weather in September showcases a delightful transition into fall. With maximum temperatures reaching a comfortable 27°C (81°F) and an average of 11°C (51°F), outdoor activities remain inviting. However, mornings can be brisk, dipping to a minimum of -9°C (15°F). September also brings about 70 mm (2.8 in) of rainfall over 12 days, contributing to the region's lush landscapes. The air carries a humidity level of 65%, creating a refreshing atmosphere ideal for exploring the beautiful surroundings of Idaho Springs.
In September, Idaho Springs experiences a delightful transition as summer starts to fade into autumn. The temperatures range from a chilly -9°C (15°F) at night to a warm 27°C (81°F) during the day, averaging around 11°C (51°F). This month's mild days and cool nights create an inviting atmosphere, perfect for outdoor activities as the vibrant fall colors begin to emerge. Compared to the sweltering summer months, September's temperatures provide a refreshing reprieve, while still holding onto the pleasant warmth of early autumn. As the days grow shorter, this period showcases nature's beauty, making it an ideal time for both locals and visitors to embrace the changing season.
In September, Idaho Springs experiences a transition as summer begins to fade, bringing an average precipitation of 70 mm (2.8 in) over about 12 days of rain. This amount marks a gentle dip from the peak rainfall seen in May and July, reflecting a shift to more stable autumn weather patterns. While September's rainfall is substantial, it remains significantly lower than the summer months, which often see intense storm activity. As the region prepares for the cooler months ahead, the precipitation helps to nourish the landscape, setting the stage for the vibrant fall foliage that follows. The month embodies a balance, blending the residual vibrancy of summer with the onset of the quieter, drier season.
In September, Idaho Springs experiences a notable shift in humidity as levels rise to 65%, marking a transition from the drier summer months. This increase reflects a typical trend as the region moves from the lower humidity typical of July and August, which hover around 52% and 56% respectively, back towards the more humid conditions of spring and fall. The return of moisture in the air suggests the coming of autumn, where humidity levels begin to climb again, ultimately reaching 76% in October. Overall, the September humidity serves as a gentle reminder of the impending seasonal changes, bridging the gap between the warm, dry summer and the cooler, wetter months ahead.
September in Idaho Springs marks a noteworthy transition in the UV Index, holding steady at 10, classified as very high, with a burn time of just 15 minutes. This slight decline from the extreme levels of earlier summer months reflects the changing seasons, yet it remains crucial for residents and visitors to stay vigilant about sun protection. As the warm, sunny days linger, awareness of UV exposure becomes essential, especially following the intense summer months. Those planning outdoor activities should take appropriate precautions to safeguard their skin while enjoying the beautiful early fall scenery. For detailed insights into UV levels throughout the year, visit Idaho Springs UV Index.
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As summer gracefully gives way to fall, September in Idaho Springs offers a delightful transition marked by 314 hours of sunshine. This month embraces the lingering warmth of summer while starting to reveal the crispness of autumn. Following the peak sunlight of July, which boasts 381 hours, September's sunlight remains plentiful but reduced, signaling shorter days ahead. The steady decline from this summer high suggests the approach of cozy sweater weather, inviting residents and visitors alike to enjoy the breathtaking landscapes under the calm and golden light. As leaves begin their vibrant transformation, September stands as a bridge, celebrating the beauty of both seasons in this charming Colorado town.
As September rolls in, Idaho Springs begins to bask in increasing sunshine, with a notable 68% chance of sun that sets this month apart from the rest. This marks a significant rise compared to the earlier summer months, where chances hovered around 54% to 62%. Following the peak of August's sunshine, the transition into September not only retains that brightness but also reassures residents and visitors alike of the enduring warmth before autumn sets in. Observing the trends, it’s clear that September stands out as a golden opportunity for outdoor activities, making it an ideal time to enjoy the beautiful Colorado scenery bathed in sunshine.
As summer gives way to autumn, September in Idaho Springs marks a gentle reduction in daylight, with the sun gracing the sky for 12 hours each day. This decline from the peak of 14 hours seen in the height of summer reflects the gradual transition into shorter days. Following this trend, October will usher in even less sunlight, dropping to 11 hours. The earlier months of the year, from January's 9 hours to March's 11 hours, illustrate a steady increase in daylight, peaking in June, July, and August. As we embrace September, the daylight hours serve as a reminder of the changing seasons, inviting cozy evenings and the beauty of fall leaves while preparing us for the winter months ahead.
As September arrives in Idaho Springs, the gentle whispers of the wind settle at an average speed of 2.2 m/s (5 mph), echoing the calm that has characterized the summer months. This consistent breeze mirrors the overall trend observed throughout the warmer season, where wind speeds have remained notably low, peaking only slightly as they transition into autumn. With averages steadily decreasing from 3.5 m/s (8 mph) in January to this serene September pace, the landscape prepares for the upcoming months, hinting at a gradual increase in gusts as winter approaches. October will see a slight uptick to 2.8 m/s (6 mph), providing a reminder that change is coming, but for now, Idaho Springs enjoys the soothing caress of early fall breezes.
The weather in Idaho Springs 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 Idaho Springs and find detailed weather information for every month.
In September, the weather in Idaho Springs experiences a wider range of temperatures, with a minimum of -9°C (15°F) and a comfortable average of 11°C (51°F), reaching a maximum of 27°C (81°F). This month also sees a fair amount of precipitation, totaling 70 mm (2.8 in) over about 12 days, with a relative humidity of 65%. In contrast, January brings much colder conditions, with temperatures dropping to a minimum of -27°C (-16°F) and an average temperature of -6°C (21°F), peaking at only 9°C (49°F). Precipitation is significantly lower in January, at 26 mm (1.0 in) spread over just 6 days, along with a higher humidity of 88%. For more detailed insights into January weather, visit Idaho Springs weather in January.
September and February in Idaho Springs present a stark contrast in weather conditions. September boasts a mild average temperature of 11°C (51°F), with highs reaching up to 27°C (81°F) and lows of -9°C (15°F). In this month, precipitation is relatively higher at 70 mm (2.8 in) over about 12 days, accompanied by a humidity level of 65%. Conversely, February brings a much colder climate, with an average temperature of -7°C (20°F) and extreme lows plunging to -32°C (-24°F). The maximum temperature in February only reaches 13°C (55°F), and the area typically receives less precipitation at 42 mm (1.6 in) over 10 days, alongside notably higher humidity at 87%. For more detailed insights, you can visit Idaho Springs weather in February.
In comparing the weather of September and March, we see notable differences in temperature and humidity levels. September boasts a milder temperature range, with a minimum of -9°C (15°F) and a maximum of 27°C (81°F), averaging around 11°C (51°F). In contrast, March is significantly colder, featuring minimum temperatures of -23°C (-9°F) and an average of -3°C (28°F), reaching a maximum of only 16°C (61°F). While both months receive similar precipitation levels—70 mm (2.8 in) in September and 69 mm (2.7 in) in March—March tends to have higher humidity at 81%, compared to September's 65%. For more details on March weather conditions, you can check Idaho Springs weather in March.
When comparing the weather in September and April, notable differences emerge in temperature and humidity. September features a broader temperature range, with minimums of -9°C (15°F) and maximums reaching 27°C (81°F), resulting in a comfortable average of 11°C (51°F). In contrast, April experiences cooler temperatures, with lows of -19°C (-3°F) and highs peaking at 17°C (62°F), averaging just around freezing at 0°C (32°F). Precipitation levels are similar, with September receiving 70 mm (2.8 in) over 12 days and April a slight increase at 75 mm (3.0 in) across 11 days. Humidity levels are also higher in April, reaching 76% compared to September's 65%. For more insights on April weather, check out Idaho Springs weather in April.
When comparing the weather between September and May, several key differences emerge. In September, the temperatures generally range from a minimum of -9°C (15°F) to a comfortable maximum of 27°C (81°F), with an average of 11°C (51°F). This month sees about 70 mm (2.8 in) of precipitation over approximately 12 days, contributing to a relative humidity of 65%.
In contrast, May experiences cooler temperatures, with a minimum of -13°C (8°F) and a maximum of 22°C (72°F), resulting in an average temperature of only 5°C (41°F). Notably, May is much wetter, with precipitation totaling 160 mm (6.3 in) over around 20 days, leading to a slightly higher humidity level of 66%.
For more detailed information on the weather specifics in May, you can check Idaho Springs weather in May.
When comparing the weather in September to June, we notice several differences despite having similar maximum temperatures of 27°C (81°F). In September, the average temperature is slightly warmer at 11°C (51°F) compared to June's 12°C (54°F), but September experiences colder minimum temperatures, dropping to -9°C (15°F) versus June's -3°C (27°F). Additionally, precipitation is more pronounced in June, with 130 mm (5.1 in) falling over 19 days, compared to September's 70 mm (2.8 in) over 12 days. The humidity levels also differ, being higher in September at 65% compared to June's 58%. For a detailed look at specific weather patterns, you can check the Idaho Springs weather in June.
When comparing the weather in September and July, notable differences emerge. September experiences a broader temperature range, with minimums dipping to -9°C (15°F) and maximums reaching 27°C (81°F), while July remains warmer overall, with a minimum of 0°C (32°F) and a maximum of 28°C (82°F). Precipitation is also significantly higher in July, totaling 158 mm (6.2 in) over 22 days, compared to September's 70 mm (2.8 in) across 12 days. Additionally, September tends to be more humid, with levels around 65%, compared to July's lower humidity at 52%. For a more detailed look at the July weather, you can visit Idaho Springs weather in July.
In comparing the weather between September and August, September presents a broader temperature range, with a minimum of -9°C (15°F) and a maximum of 27°C (81°F), leading to an average temperature of 11°C (51°F). In contrast, August has milder temperatures, ranging from a minimum of 1°C (34°F) to a maximum of 26°C (79°F), resulting in an average of 14°C (57°F). Additionally, September experiences less precipitation, totaling 70 mm (2.8 in) over 12 days, compared to August's heavier rainfall of 125 mm (4.9 in) occurring over 21 days. The humidity also varies, with September averaging 65% compared to August's 56%. For more details, visit Idaho Springs weather in August.
In September, temperatures in Idaho Springs typically range from a minimum of -9°C (15°F) to a maximum of 27°C (81°F), with an average temperature of 11°C (51°F). The month sees about 70 mm (2.8 in) of precipitation over 12 days, and humidity levels average around 65%. In contrast, October brings a more pronounced chill, with temperatures dropping to a minimum of -22°C (-7°F) and averaging just 3°C (37°F), while reaching a maximum of 21°C (70°F). Despite slightly lower precipitation at 58 mm (2.3 in) over 10 days, humidity increases to an average of 76%. For more detailed information, you can check Idaho Springs weather in October.
September and November present stark contrasts in weather patterns. September enjoys milder temperatures, with averages around 11°C (51°F) and a maximum reaching 27°C (81°F), while November's average plummets to -1°C (30°F), with daytime highs barely hitting 16°C (62°F). Precipitation also differs significantly; September experiences 70 mm (2.8 in) over 12 days, whereas November sees only 31 mm (1.2 in) across just 6 days, resulting in a drier month overall. Additionally, humidity levels rise in November, reaching 82% compared to September's 65%. For more detailed information, check out Idaho Springs weather in November.
In September, Idaho Springs experiences a mild climate with temperatures ranging from a chilly minimum of -9°C (15°F) to a warm maximum of 27°C (81°F), offering an average temperature of 11°C (51°F). The month sees around 70 mm (2.8 in) of precipitation across 12 days, accompanied by a humidity level of 65%. In contrast, December brings much colder weather, with temperatures plunging to a minimum of -24°C (-11°F) and averaging -5°C (23°F), peaking at a maximum of 14°C (57°F). There is significantly less precipitation, totaling only 23 mm (0.9 in) over just 6 days, and humidity rises to 89%. For more details, visit Idaho Springs weather in December.
September in Idaho Springs brings a refreshing shift from the summer heat, as days start to cool down, showcasing a blend of warm afternoons and chilly nights. With an average temperature settling around a comfortable 11°C (51°F), it offers a pleasant reprieve from the scorching highs of summer, while the occasional dip to -9°C (15°F) serves as a reminder that autumn is approaching. Precipitation becomes more frequent, with about 12 rainy days, contributing to the vibrant fall foliage that begins to emerge. This month strikes a unique balance, with humidity levels hovering around 65%, inviting both locals and visitors to enjoy the natural beauty that Idaho Springs has to offer. For a more comprehensive look at what makes the weather here unique, check out Idaho Springs Climate.