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October Weather in Arvada, United States

Last updated: June 24, 2025

In October, the average temperature in Arvada, United States hovers around 9°C (49°F). While it can dip as low as -18°C (1°F), temperatures may also reach a balmy 30°C (86°F). Expect 37 mm (1.5 in) of precipitation over approximately 7 days, with an average humidity of 76%.

October Temperature in Arvada

In October in Arvada, the average temperature is 9°C (49°F). Maximum temperatures can reach 30°C (86°F), while minimums can drop as low as -18°C (1°F). Be prepared for a wide range of temperatures when planning your trip!

October Weather in Arvada: Daily Temperature Highs, Lows, and Averages

The chart illustrates October temperature patterns in Arvada, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Arvada, October typically has an average temperature of 9°C (49°F), with highs reaching up to 30°C (86°F) and lows dropping to around -18°C (1°F).
JanFebMarAprMayJunJulAugSepOctNovDec302939475568737266494033
Data source: Temperature data for Arvada generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

October Precipitation in Arvada

In Arvada in October, the precipitation amount is 37 mm (1.5 in) during a span of 7 days.

October Precipitation Trends in Arvada

The chart displays monthly precipitation patterns in Arvada, with values for each month alongside October’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how October’s conditions compare to those of other months. In Arvada, October typically receives around 37 mm (1.5 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec2329575511148443629372414
Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.
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October Humidity in Arvada

In Arvada in October, humidity is 76%. With an average temperature of 9°C (49°F), this humidity feels like a chilly embrace, making outdoor adventures a bit uncomfortable as the dampness seeps into your clothes and lingers in the air, often leading to a sense of coolness that can be refreshing but also dampens the joy of exploration.

October Average Humidity in Arvada

This chart illustrates the average monthly humidity levels in Arvada, with October’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In October, average humidity in Arvada is approximately 76%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%87%81%76%67%58%52%56%65%76%82%89%
Data source: Humidity data for October generated using information from the Copernicus Climate Change Service.

October UV Index in Arvada

In Arvada in October, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Arvada.

Maximum UV Index Levels in Arvada for October

The chart shows the monthly maximum UV Index (UVI) for Arvada in October, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In October, the maximum UV index in Arvada typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec469111212121110754
Data source: Arvada October UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How October Weather in Arvada Compares to Other Months

Weather in Arvada varies notably across the year, with each month offering distinct climate conditions. This page compares October’s weather to other months in Arvada, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Arvada, showing how October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (31°F)23 mm (0.9 inches)88%moderate
February Weather-1°C (30°F)29 mm (1.1 inches)87%high
March Weather4°C (40°F)57 mm (2.3 inches)81%very high
April Weather8°C (47°F)55 mm (2.2 inches)76%extreme
May Weather13°C (56°F)111 mm (4.4 inches)66%extreme
June Weather20°C (68°F)48 mm (1.9 inches)58%extreme
July Weather23°C (74°F)43 mm (1.7 inches)52%extreme
August Weather22°C (72°F)35 mm (1.4 inches)56%extreme
September Weather19°C (66°F)29 mm (1.2 inches)65%very high
October Weather9°C (49°F)37 mm (1.5 inches)76%high
November Weather5°C (41°F)24 mm (1.0 inches)82%moderate
December Weather1°C (34°F)14 mm (0.6 inches)89%moderate

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