Denver Weather in October
United States · Humid Continental climate · Data averaged from 2020-01-01 to 2024-12-31 (5 years)
October in Denver sees average temperatures ranging from a low of 3.6°C (38.5°F) to a high of 20.2°C (68.4°F), with a mean of 11.2°C (52.2°F). Compared to the annual average of 10.0°C (50.0°F), this month is 1.2°C warmer than the yearly norm. Precipitation averages 17.6mm, making it approximately 16.0mm drier than the monthly average of 34.0mm. The city receives an average of 9.8 hours of sunshine per day during October, with relative humidity averaging 45.7%. Wind speeds reach an average maximum of 17.4 km/h. Snowfall averages 4.5cm during October, which can affect travel plans and outdoor activities. For travelers, this month offers a temperature experience in Denver, with drier-than-average conditions compared to the rest of the year.
Denver's mile-high altitude creates a unique climate with low humidity and intense sunshine. I've studied the data and found that the city receives over 300 days of sunshine annually, making it one of the sunniest major US cities. The best time for outdoor activities is May to October, when temperatures are warm and the Rocky Mountains are accessible. The winters are cold but dry, with plenty of sunshine.
October vs Adjacent Months
| Metric | September | October | November |
|---|---|---|---|
| Mean Temp | 19.1°C (66.4°F) | 11.2°C (52.2°F) | 3.6°C (38.5°F) |
| Rainfall | 22.5mm | 17.6mm | 19.9mm |
| Sunshine | 11.0 hrs | 9.8 hrs | 8.4 hrs |
| Humidity | 42.1% | 45.7% | 52.9% |
| Wind | 17.7 km/h | 17.4 km/h | 15.8 km/h |
| Rainy Days | 5.8 | 3.6 | 4.6 |
| Snowfall | 2.3 cm | 4.5 cm | 9.9 cm |
Seasonal Context
October falls in Autumn in the Northern Hemisphere. Autumn sees temperatures gradually cooling from summer highs. For travelers visiting Denver in October, the data indicates mixed conditions based on the combination of temperature, precipitation, and daylight hours.
Frequently Asked Questions
What is the average temperature in Denver in October?
The average temperature in Denver during October ranges from 3.6°C (38.5°F) to 20.2°C (68.4°F), with a mean of 11.2°C (52.2°F).
How much does it rain in Denver in October?
Denver receives an average of 17.6mm of precipitation in October, spread across approximately 3.6 rainy days.
What should I pack for Denver in October?
Based on October weather data, pack warm layers, a medium jacket, and waterproof outerwear.
Is October a good time to visit Denver?
October is a cooler month, suitable for travelers who prefer mild weather and fewer crowds. Pack warm layers and enjoy indoor attractions.
Other Months for Denver
Cities with Similar October Climate (Humid Continental)
Data Source: Open-Meteo historical archive (2020-01-01 to 2024-12-31). Daily measurements aggregated into monthly climate normals. Coordinates: 39.74°, -104.99°. Timezone: America/Denver. Last updated: 2026-07-30.