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December Weather in Glenns Ferry, United States

Last updated: June 24, 2025

In December, the average temperature in Glenns Ferry, United States hovers around 0°C (32°F), with extremes ranging from a chilly -15°C (6°F) to a mild 14°C (57°F). Expect 39 mm (1.6 in) of precipitation spread over 9 days, accompanied by an average humidity of 87%. Perfect for those cozy moments indoors!

December Temperature in Glenns Ferry

In December in Glenns Ferry, the average temperature is 0°C (32°F). The maximum can reach 14°C (57°F), and the minimum can be as low as -15°C (6°F). It's advisable to pack warm clothing and be prepared for chilly conditions while enjoying your travels.

December Weather in Glenns Ferry: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Glenns Ferry, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Glenns Ferry, December typically has an average temperature of 0°C (32°F), with highs reaching up to 14°C (57°F) and lows dropping to around -15°C (6°F).
JanFebMarAprMayJunJulAugSepOctNovDec303444505970817867514131
Data source: Temperature data for Glenns Ferry 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 Glenns Ferry

In Glenns Ferry in December, the total precipitation amount is 39 mm (1.6 in) spread over a duration of 9 days.

December Precipitation Trends in Glenns Ferry

The chart displays monthly precipitation patterns in Glenns Ferry, 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 Glenns Ferry, December typically receives around 39 mm (1.6 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec5152392733132511263839
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Glenns Ferry

In Glenns Ferry in December, humidity is 87%. With an average temperature of 0°C (32°F), this humidity feels like a damp chill that clings to your skin, making travel uncomfortable and cold, as each breath brings a heavy moisture that seeps into your clothes.

December Average Humidity in Glenns Ferry

This chart illustrates the average monthly humidity levels in Glenns Ferry, 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 Glenns Ferry is approximately 87%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%89%85%79%71%71%66%50%48%65%84%87%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Glenns Ferry

In Glenns Ferry in December, 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 Glenns Ferry, you can check the information here.

Maximum UV Index Levels in Glenns Ferry for December

The chart shows the monthly maximum UV Index (UVI) for Glenns Ferry 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 Glenns Ferry typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3579101111109643
Data source: Glenns Ferry 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 Glenns Ferry Compares to Other Months

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

This table compares monthly weather conditions in Glenns Ferry, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (31°F)51 mm (2.0 inches)88%moderate
February Weather1°C (34°F)52 mm (2.0 inches)89%moderate
March Weather7°C (44°F)39 mm (1.5 inches)85%high
April Weather10°C (51°F)27 mm (1.1 inches)79%very high
May Weather15°C (59°F)33 mm (1.3 inches)71%very high
June Weather21°C (70°F)13 mm (0.5 inches)71%extreme
July Weather27°C (81°F)2 mm (0.1 inches)66%extreme
August Weather25°C (78°F)5 mm (0.2 inches)50%very high
September Weather19°C (67°F)11 mm (0.4 inches)48%very high
October Weather10°C (51°F)26 mm (1.0 inches)65%high
November Weather5°C (41°F)38 mm (1.5 inches)84%moderate
December Weather0°C (32°F)39 mm (1.6 inches)87%moderate

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