Last updated: February 24, 2025
October in Denver, United States showcases a striking range in temperature, from a pleasant maximum of 30°C (86°F) to a brisk minimum of -18°C (1°F), averaging a cool 9°C (49°F). This month sees a total precipitation of 37 mm (1.5 in), spread across 7 days, contributing to the city's diverse autumn climate. With an average humidity level of 76%, residents and visitors alike experience the vibrant shifts of fall while enjoying the stunning backdrop of Colorado's changing landscapes.
In October, temperatures in Denver start to reflect the onset of fall, bringing a notable shift from the warmth of summer. With minimums dipping to -18°C (1°F) and average temperatures around 9°C (49°F), residents experience crisp, cool mornings that gradually warm up to maximums of 30°C (86°F) during the day. This month serves as a bridge between the mild conditions of earlier months and the chill of winter, showcasing a gradual decline in temperatures. As the days grow shorter, the vibrant hues of autumn foliage contrast beautifully with the backdrop of the Rocky Mountains, making October a stunning time for outdoor activities in the Mile High City.
In October, Denver experiences a notable transition in weather as the city prepares for the onset of winter. This month typically sees 37 mm (1.5 in) of precipitation, spread over about 7 days, indicating a decrease in moisture compared to the abundant rainfall of spring and early summer. Interestingly, October's precipitation is higher than the preceding months of September and August, which hints at the arrival of the more robust fall storms. As temperatures begin to drop, residents may notice a shift from summer rain showers to potentially mixed precipitation, setting the stage for the colder months ahead while still providing the colorful canvas of autumn foliage.
As October arrives in Denver, the humidity settles at a comfortable 76%, marking a transition from the drier summer months. This slight increase from September’s 65% suggests a shift toward the crispness of autumn air, while still being significantly lower than the winter humidity levels, peaking at 89% in December. Observing the year’s trends, we see a gradual decline in humidity from the damp chill of January’s 88%, reaching a low of 52% in July, before beginning to rise again. October’s humidity not only signifies the onset of fall but also prepares the atmosphere for the winter months ahead, creating a refreshing balance in Denver's climate.
In October, Denver experiences a UV Index of 7, classified as high, indicating that while the sun's rays are less intense than in the summer months, protective measures are still important. Burn time decreases slightly from September's 15 minutes to 25 minutes, emphasizing the need for caution during midday exposure. This month marks a transition, as the UV levels steadily decline from the extremes of summer, yet remain higher than the winter months where the UV Index drops to 4 in January. As fall progresses, it's essential to stay mindful of the sun's strength and take appropriate precautions, especially if you're enjoying the outdoors. For more detailed information, visit Denver UV Index.
UV Risk Categories
As the crisp air of October settles over Denver, the city enjoys a healthy dose of 276 hours of sunshine, a welcome embrace before winter takes its toll. This month sees a notable dip from the vibrant heights of summer—with July and June basking in 375 and 371 hours, respectively—but it still holds its own compared to the early months of the year. October's sun-soaked days are a gentle reminder of the gradually waning warmth, as daylight hours begin to recede in tandem with the changing leaves. This month serves not only as a transitional period but also a period of reflection on the abundant sunshine that the Rocky Mountain area enjoys throughout the year, consistently higher than most winter months.
In Denver, October brings a delightful 67% chance of sunny weather, continuing a positive trend from the preceding months of September and August, which enjoy even higher probabilities at 69% and 67% respectively. As autumn settles in, the likelihood of sunny days remains robust, showcasing the city’s favorable climate. This period marks a notable transition, as the city shifts from the peak summer months into a slightly cooler season, yet retains a strong chance for blue skies. With an overall trend of bright days in the months leading to October, residents and visitors alike can look forward to enjoying the stunning fall foliage under a sunlit sky.
As the vibrant autumn leaves begin to fall in Denver, October brings a gentle decline in daylight, offering approximately 11 hours of sunshine each day. This month marks a transition from the summer's peak brightness—averaging 14 hours in June through August—to shorter days leading into winter. While October's daylight dips slightly from September's 12 hours, it still holds onto the golden glow of late summer, inviting residents to savor the last moments of outdoor warmth. As the year progressively winds down, one can observe the rhythmic pattern of daylight duration, reminding us of nature's cyclical beauty.
As October unfolds in Denver, the city experiences a gentle breeze with an average wind speed of 2.5 m/s (5 mph), a slight uptick from the previous months. This subtle increase mirrors the seasonal transition, as the winds begin to carry the crispness of autumn, hinting at the chill of winter ahead. Notably, October's winds echo the more stable conditions seen in late summer, where speeds hovered around 2.3 to 2.4 m/s. However, as the month progresses, winds typically begin to strengthen in anticipation of the colder months, building momentum that will peak in the early winter with average speeds reaching 2.8 m/s (6 mph) in December. Thus, October presents a pleasant yet brisk interlude, inviting residents to embrace the changing scenery while relishing the mild gusts that whisk through the city.
The weather in Denver changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of October's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Denver and find detailed weather information for every month.
October weather presents a wide temperature range, with minimums dipping to -18°C (1°F) and maximums reaching a warm 30°C (86°F), resulting in an average temperature of 9°C (49°F). The month experiences moderate precipitation at 37 mm (1.5 in) over about 7 days, alongside a humidity level of 76%. In contrast, January brings colder conditions, with minimum temperatures falling to -23°C (-10°F) and a maximum of 19°C (67°F), leading to an average temperature of -1°C (31°F). This month has less precipitation, totaling 23 mm (0.9 in) over just 4 days, but higher humidity at 88%. The stark differences in temperature and precipitation illustrate the transition from the milder autumn of October to the harsher cold of January. For more detailed insights, you can check Denver weather in January.
October and February present strikingly different weather patterns. In October, temperatures can vary greatly, with a minimum of -18°C (1°F) and a maximum reaching up to 30°C (86°F), while the average temperature is a mild 9°C (49°F). Precipitation during this month totals 37 mm (1.5 in) over about 7 days, accompanied by a humidity level of 76%.
In contrast, February is generally colder, characterized by a minimum temperature of -25°C (-12°F) and a maximum of 25°C (78°F), with an average temperature around -1°C (30°F). This month sees slightly less precipitation, totaling 29 mm (1.1 in) across 6 days, but has higher humidity at 87%. For more detailed insights on the weather during this winter month, visit Denver weather in February.
October and March showcase distinct weather patterns. In October, temperatures can range from a chilly -18°C (1°F) at night to a pleasant 30°C (86°F) during the day, with an average temperature of 9°C (49°F). The month sees around 37 mm (1.5 in) of precipitation over approximately 7 days, accompanied by a humidity level of 76%. In contrast, March typically experiences even colder nights with a minimum of -20°C (-5°F) and averages around 4°C (40°F), while daytime highs reach up to 27°C (80°F). Rainfall increases to 57 mm (2.3 in) over about 9 days, with humidity slightly elevated at 81%. For a deeper insight into specific conditions, check Denver weather in March.
When comparing the weather of October and April, both months show a similar average humidity of 76%, indicative of generally moist conditions. In October, temperatures can range significantly, with a minimum of -18°C (1°F) and a maximum of 30°C (86°F), resulting in an average of 9°C (49°F). In contrast, April’s temperatures are slightly milder, ranging from a minimum of -14°C (8°F) to a maximum of 29°C (84°F), with an average temperature of 8°C (47°F). Precipitation is also more pronounced in April, totaling 55 mm (2.2 inches) over 10 days, compared to October’s 37 mm (1.5 inches) over 7 days. For a detailed overview of Denver’s April weather, you can visit Denver weather in April.
October and May present distinct weather patterns, showcasing the transition between seasons. In October, temperatures range from a chilly -18°C (1°F) to a warm 30°C (86°F), with an average of 9°C (49°F), indicating a remarkable variation that can occur within the month. Precipitation in October is relatively low at 37 mm (1.5 in) over seven days, with humidity levels reaching 76%, giving the air a crisp feel.
In contrast, May typically features milder conditions, with temperatures fluctuating between -6°C (21°F) and a high of 33°C (91°F), averaging 13°C (56°F). This month experiences more rainfall, totaling 111 mm (4.4 in) over 14 days, and the humidity is slightly lower at 66%. Thus, while both months can produce high temperatures, May tends to be wetter and more consistently mild. For more insights about May weather, visit Denver weather in May.
October and June present quite different weather experiences. In October, temperatures can range from a chilly -18°C (1°F) at night to a warm 30°C (86°F) during the day, with an average of around 9°C (49°F). The month sees about 37 mm (1.5 in) of precipitation over approximately 7 days, with a higher humidity level of 76%. In contrast, June features milder conditions, with nighttime temperatures starting at 5°C (42°F) and peaking at 37°C (99°F) during the day, leading to a comfortable average of 20°C (68°F). Although June is slightly wetter, with 48 mm (1.9 in) of rain over 9 days, its humidity is lower at 58%. For more details, you can check Denver weather in June.
In comparing the weather between October and July, it's evident that July tends to be much warmer, with average temperatures around 23°C (74°F) and a maximum of 36°C (98°F), compared to October's cooler average of 9°C (49°F) and a maximum of 30°C (86°F). Additionally, October experiences a wider range of temperatures, with a minimum that can drop to -18°C (1°F). Precipitation is slightly higher in July, totaling 43 mm (1.7 in) over 9 days, versus October's 37 mm (1.5 in) over 7 days. Interestingly, October's humidity is also higher at 76%, compared to July's 52%. For a more detailed look at July weather, visit Denver weather in July.
October and August present significantly different weather patterns. In October, temperatures can drop as low as -18°C (1°F) at night, with an average of 9°C (49°F) and daytime highs reaching 30°C (86°F). This month also experiences around 37 mm (1.5 in) of precipitation spread over approximately 7 days, coupled with a humidity level of 76%. In contrast, August boasts a much milder climate with minimum temperatures around 10°C (50°F), average highs of 22°C (72°F), and maximums peaking at 36°C (97°F). Precipitation in August is slightly lower at 35 mm (1.4 in) but maintains a comparable frequency of rainy days, with a lower humidity of 56%. For a more detailed look at August weather, check out Denver weather in August.
In comparing the weather between September and October, it is evident that October experiences a broader range of temperatures, with lows dipping to -18°C (1°F) and highs reaching up to 30°C (86°F), while September has milder temperatures, with a minimum of -2°C (30°F) and a maximum of 36°C (98°F). October also sees slightly more precipitation, totaling 37 mm (1.5 in) over 7 days, compared to September's 29 mm (1.2 in) over 5 days. Furthermore, October has higher humidity levels at 76%, compared to September's 65%. For more details on September's weather, check out Denver weather in September.
October weather can be quite variable, with temperatures ranging from a chilly -18°C (1°F) to a warm 30°C (86°F), leading to an average of 9°C (49°F). It also experiences more rainfall than November, with 37 mm (1.5 in) of precipitation over about seven days and a humidity level of 76%. In contrast, November sees cooler overall temperatures, with a minimum of -16°C (3°F) and a maximum of 25°C (78°F), averaging at 5°C (41°F). Precipitation decreases to 24 mm (1.0 in) over just four days, and humidity rises slightly to 82%. For more details on the weather in November, you can visit Denver weather in November.
In October, temperatures can be quite varied, ranging from a minimum of -18°C (1°F) to a maximum of 30°C (86°F), with an average temperature of 9°C (49°F). This month also sees about 37 mm (1.5 in) of precipitation over approximately 7 days, and humidity levels are at 76%. In contrast, December typically presents colder conditions, with temperatures dropping even further, featuring a minimum of -19°C (-1°F) and a maximum of 22°C (72°F), resulting in an average of just 1°C (34°F). Rainfall decreases significantly to 14 mm (0.6 in) over only 3 days, and humidity rises to 89%. The significant drop in temperature and increase in humidity makes December feel markedly different from October. For more detailed insights, check out Denver weather in December.
As October unfolds in Denver, the weather offers a striking contrast to the warmer, sunnier months that precede it. With temperatures dipping significantly, residents and visitors alike can expect a refreshing chill in the air, marked by crisp mornings and noticeably cooler afternoons. The average temperature hovers around a comfortable 9°C (49°F), while peaks can reach a surprising 30°C (86°F) on unseasonably warm days. However, the month also brings its share of moisture, with an average of 37 mm (1.5 in) of precipitation over about seven days, contributing to the city’s vibrant fall foliage. The increased humidity at 76% adds a layer of crispness that sets the tone for the transition into winter. For those interested in exploring more about the year-round climate, visit Denver Climate for detailed insights.