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December Weather in Hayden, United States

Last updated: June 24, 2025

In Hayden, United States, the average temperature in December hovers around 10°C (51°F). Expect a range of conditions, with minimum temperatures dipping to -4°C (26°F) and maximums reaching up to 25°C (78°F). During this month, precipitation totals about 32 mm (1.2 in) over 4 days, and the average humidity sits at a comfortable 82%.

December Temperature in Hayden

In December in Hayden, the average temperature is 10°C (51°F), with maximums reaching 25°C (78°F) and minimums dropping as low as -4°C (26°F). This makes it an ideal time for travelers to experience a pleasant range of temperatures, so pack accordingly for both warm and cooler days.

December Weather in Hayden: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Hayden, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hayden, December typically has an average temperature of 10°C (51°F), with highs reaching up to 25°C (78°F) and lows dropping to around -4°C (26°F).
JanFebMarAprMayJunJulAugSepOctNovDec495259697687888782716151
Data source: Temperature data for Hayden 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.

December Precipitation in Hayden

In Hayden in December, the total precipitation amount is 32 mm (1.2 in) over a span of 4 days.

December Precipitation Trends in Hayden

The chart displays monthly precipitation patterns in Hayden, with values for each month alongside December’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how December’s conditions compare to those of other months. In Hayden, December typically receives around 32 mm (1.2 inches) of precipitation spread over approximately 4 days.
JanFebMarAprMayJunJulAugSepOctNovDec414625363562922132032
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Hayden

In Hayden in December humidity is 82%. With an average temperature of 10°C (51°F), this humidity feels like a damp chill that clings to your skin, making outdoor adventures less appealing and prompting travelers to seek cozy indoor activities or warm drinks to counter the brisk air.

December Average Humidity in Hayden

This chart illustrates the average monthly humidity levels in Hayden, with December’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In December, average humidity in Hayden is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec76%79%67%55%40%33%34%48%64%67%77%82%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Hayden

In Hayden in December, the maximum UV index reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Hayden for better planning.

Maximum UV Index Levels in Hayden for December

The chart shows the monthly maximum UV Index (UVI) for Hayden in December, 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 December, the maximum UV index in Hayden typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec479111212121110864
Data source: Hayden December 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 December Weather in Hayden Compares to Other Months

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

This table compares monthly weather conditions in Hayden, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather10°C (50°F)41 mm (1.6 inches)76%moderate
February Weather11°C (52°F)46 mm (1.8 inches)79%high
March Weather15°C (60°F)25 mm (1.0 inches)67%very high
April Weather21°C (69°F)3 mm (0.1 inches)55%extreme
May Weather25°C (76°F)6 mm (0.2 inches)40%extreme
June Weather30°C (87°F)3 mm (0.1 inches)33%extreme
July Weather31°C (88°F)56 mm (2.2 inches)34%extreme
August Weather30°C (87°F)29 mm (1.1 inches)48%extreme
September Weather28°C (82°F)22 mm (0.9 inches)64%very high
October Weather21°C (71°F)13 mm (0.5 inches)67%very high
November Weather16°C (61°F)20 mm (0.8 inches)77%high
December Weather10°C (51°F)32 mm (1.2 inches)82%moderate

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