October weather forecast
Colorado, USA

October in Colorado brings a distinct autumnal feel, with temperatures continuing to drop and landscapes transforming with vibrant fall colors. In the Front Range urban corridor, temperatures often range from 40°F (4.4°C) to 65°F (18.3°C), providing crisp and cool weather.

The mountains of Colorado become a spectacle, with aspen trees displaying brilliant shades of gold and orange. Hiking and outdoor exploration remain popular, though visitors must be prepared for more unpredictable weather.

Snow becomes a more common occurrence in October, particularly in higher elevations. While not yet substantial enough to support winter sports in most areas, the snow adds a fresh dimension to the scenic beauty.

Rainfall in the lower regions becomes more sporadic, and the once frequent summer thunderstorms are now a rarity. The weather tends to be drier, complemented by the clear and sunny skies typical of Colorado's autumn.

In the Eastern Plains, harvest activities are in full swing, and the agricultural areas reflect the seasonal changes. The contrast between warm days and cooler nights becomes more pronounced, reflecting the diurnal temperature variations that are characteristic of the state's semi-arid regions.

October's weather encapsulates the heart of fall in Colorado, with cooler temperatures, diminishing rainfall, and the onset of snow in the mountains. The shift from the dynamic summer pattern to the more stable, serene conditions of autumn is complete, offering a tranquil and visually stunning environment that is emblematic of Colorado's seasonal diversity.

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• Denver - October »
  Thus, October in Denver becomes a blend of fall aesthetics interrupted by early winter snow showers. 
 The onset of October brings a clear temperature shift, with the average high-temperature decreasing from a moderately hot 76.6°F (24.8°C) in September to a comfortable 61.3°F (16.3°C). In Denver during October, the rain falls for 6.1 days and regularly aggregates up to 0.79" (20mm) of precipitation.
• Colorado Springs - October »
  In Colorado Springs, in October, snow falls for 3.4 days, with typically accumulated 3.31" (84mm) of snow. In Colorado Springs, during October, snow falls for 3.4 days and regularly aggregates up to 3.31" (84mm) of snow.
• Aurora - October »
  On the first day of October in Aurora sunrise is at 6:55 am and sunset at 6:42 pm. On the last day of October, in Aurora sunrise is at 7:26 am and sunset at 5:59 pm MDT.
• Fort Collins - October »
  In Fort Collins, in October, during 3.6 rainfall days, 0.43" (11mm) of precipitation is typically accumulated. In Fort Collins, in October, during 3.6 rainfall days, 0.43" (11mm) of precipitation is typically accumulated.
• Boulder - October »
  On the first day of October in Boulder sunrise is at 6:57 am and sunset at 6:44 pm. In Boulder, in October, during 7 rainfall days, 0.91" (23mm) of precipitation is typically accumulated.
• Pueblo - October »
  In Pueblo, in October, it is raining for 4.8 days, with typically 0.75" (19mm) of accumulated precipitation. As October begins in Pueblo, there is a noticeable decrease in the average high-temperature, falling from a moderately hot 80.1°F (26.7°C) in September to a comfortable 65.3°F (18.5°C).
• Greeley - October »
  In Greeley, during October, the rain falls for 3.8 days and regularly aggregates up to 0.47" (12mm) of precipitation. On the last day of October, in Greeley, sunrise is at 7:27 am and sunset at 5:57 pm MDT.
• Longmont - October »
  In Longmont, Colorado, during October, the rain falls for 5.9 days and regularly aggregates up to 0.67" (17mm) of precipitation. In Longmont, Colorado, in October, it is raining for 5.9 days, with typically 0.67" (17mm) of accumulated precipitation.
• Grand Junction - October »
  In Grand Junction, in October, during 7.4 rainfall days, 0.94" (24mm) of precipitation is typically accumulated. On the first day of October in Grand Junction, sunrise is at 7:10 am and sunset at 6:57 pm.
• Broomfield - October »
  On the first day of October in Broomfield, sunrise is at 6:56 am and sunset at 6:43 pm. On the last day of October, in Broomfield, sunrise is at 7:28 am and sunset at 5:59 pm MDT.
• Castle Rock - October »
  January, February, October through December, with an average maximum UV index of 2, are months with the lowest UV index in Castle Rock, Colorado. The start of October in Castle Rock signals a considerable reduction in the average high-temperature, receding from a moderately hot 75.6°F (24.2°C) in September to a mild 60.4°F (15.8°C).
• Commerce City - October »
  The month with the most snowfall in Commerce City is October, when snow falls for 1.7 days and typically aggregates up to 1.42" (36mm) of snow. A shift in Commerce City's weather is noticeable as September turns into October, with the average high temperature decreasing from a warm 79.5°F (26.4°C) to a comfortable 63.3°F (17.4°C).