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November Weather in Boulder, United States

Last updated: June 24, 2025

In Boulder, United States, the average temperature in November hovers around -3°C (28°F). You can expect a minimum temperature dipping to -21°C (-6°F), while the maximum can reach a mild 17°C (63°F). During this month, precipitation totals around 34 mm (1.3 in) over approximately 9 days, and the average humidity is a high 84%.

November Temperature in Boulder

In November, in Boulder, the average temperature is -3°C (28°F), with maximums reaching 17°C (63°F) and minimums plummeting to -21°C (-6°F). Travelers should be prepared for a wide range of temperatures and dress accordingly to enjoy their visit.

November Weather in Boulder: Daily Temperature Highs, Lows, and Averages

The chart illustrates November temperature patterns in Boulder, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Boulder, November typically has an average temperature of -3°C (28°F), with highs reaching up to 17°C (63°F) and lows dropping to around -21°C (-6°F).
JanFebMarAprMayJunJulAugSepOctNovDec181528344657656354382718
Data source: Temperature data for Boulder 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.

November Precipitation in Boulder

In Boulder in November, the precipitation amount is 34 mm (1.3 in) over the course of 9 days.

November Precipitation Trends in Boulder

The chart displays monthly precipitation patterns in Boulder, with values for each month alongside November’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how November’s conditions compare to those of other months. In Boulder, November typically receives around 34 mm (1.3 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec2356406892112443943443432
Data source: Precipitation data for November generated using information from the Copernicus Climate Change Service.
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November Humidity in Boulder

In Boulder in November, humidity is 84%. With an average temperature of -3°C (28°F), this humidity feels like an icy embrace that clings uncomfortably, making travel challenging as it cuts through layers of clothing and creates an unsettling chill that dampens the spirit of exploration.

November Average Humidity in Boulder

This chart illustrates the average monthly humidity levels in Boulder, with November’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In November, average humidity in Boulder is approximately 84%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%88%83%78%76%78%77%71%68%72%84%91%
Data source: Humidity data for November generated using information from the Copernicus Climate Change Service.

November UV Index in Boulder

In Boulder in November, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in Boulder, you can check the information here.

Maximum UV Index Levels in Boulder for November

The chart shows the monthly maximum UV Index (UVI) for Boulder in November, 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 November, the maximum UV index in Boulder typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec34689111098532
Data source: Boulder November 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 November Weather in Boulder Compares to Other Months

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

This table compares monthly weather conditions in Boulder, showing how November’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-8°C (18°F)23 mm (0.9 inches)87%moderate
February Weather-9°C (16°F)55 mm (2.2 inches)88%moderate
March Weather-2°C (28°F)40 mm (1.6 inches)83%high
April Weather1°C (34°F)68 mm (2.7 inches)78%very high
May Weather8°C (46°F)92 mm (3.6 inches)76%very high
June Weather14°C (57°F)112 mm (4.4 inches)78%extreme
July Weather18°C (65°F)44 mm (1.7 inches)77%very high
August Weather17°C (64°F)39 mm (1.5 inches)71%very high
September Weather12°C (54°F)43 mm (1.7 inches)68%very high
October Weather3°C (38°F)44 mm (1.7 inches)72%moderate
November Weather-3°C (28°F)34 mm (1.3 inches)84%moderate
December Weather-8°C (19°F)32 mm (1.3 inches)90%low

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