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December Weather in Cascade Valley, United States

Last updated: June 24, 2025

In December, the average temperature in Cascade Valley, United States hovers around 1°C (33°F). Temperatures can vary significantly, with a minimum of -15°C (6°F) and a maximum reaching 19°C (66°F). Expect about 34 mm (1.4 in) of precipitation spread over 8 days this month, accompanied by an average humidity level of 86%.

December Temperature in Cascade Valley

In December in Cascade Valley, the average temperature is 1°C (33°F). The maximum can reach 19°C (66°F), while the minimum can be as low as -15°C (6°F). Be prepared for a wide range of temperatures when planning your travels to Cascade Valley during this month.

December Weather in Cascade Valley: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Cascade Valley, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Cascade Valley, December typically has an average temperature of 1°C (33°F), with highs reaching up to 19°C (66°F) and lows dropping to around -15°C (6°F).
JanFebMarAprMayJunJulAugSepOctNovDec323344536472797867514133
Data source: Temperature data for Cascade Valley 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 Cascade Valley

In Cascade Valley in December, the precipitation amount is 34 mm (1.4 in) over the course of 8 days.

December Precipitation Trends in Cascade Valley

The chart displays monthly precipitation patterns in Cascade Valley, 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 Cascade Valley, December typically receives around 34 mm (1.4 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec433427261371313313834
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Cascade Valley

In Cascade Valley in December humidity is 86%. With average temperature 1°C (33°F), this humidity feels like a biting chill that seeps into your bones, making travel uncomfortable and necessitating extra layers for warmth to counteract the dampness in the air.

December Average Humidity in Cascade Valley

This chart illustrates the average monthly humidity levels in Cascade Valley, 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 Cascade Valley is approximately 86%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%86%86%82%77%79%77%62%60%80%87%86%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Cascade Valley

In Cascade Valley in December, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in Cascade Valley, you can visit Hourly UV Index in Cascade Valley.

Maximum UV Index Levels in Cascade Valley for December

The chart shows the monthly maximum UV Index (UVI) for Cascade Valley 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 Cascade Valley typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2356891097532
Data source: Cascade Valley 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 Cascade Valley Compares to Other Months

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

This table compares monthly weather conditions in Cascade Valley, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather0°C (32°F)43 mm (1.7 inches)85%low
February Weather1°C (33°F)34 mm (1.3 inches)86%moderate
March Weather7°C (44°F)27 mm (1.1 inches)86%moderate
April Weather12°C (53°F)26 mm (1.0 inches)82%high
May Weather18°C (65°F)13 mm (0.5 inches)77%very high
June Weather22°C (72°F)7 mm (0.3 inches)79%very high
July Weather26°C (79°F)1 mm (0.0 inches)77%very high
August Weather26°C (78°F)3 mm (0.1 inches)62%very high
September Weather19°C (67°F)13 mm (0.5 inches)60%high
October Weather11°C (52°F)31 mm (1.2 inches)80%moderate
November Weather5°C (41°F)38 mm (1.5 inches)87%moderate
December Weather1°C (33°F)34 mm (1.4 inches)86%low

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