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December Weather in Afton, United States

Last updated: June 24, 2025

In December, the average temperature in Afton, United States hovers around -7°C (20°F). Expect chilly conditions with minimums plunging as low as -23°C (-8°F) and maximums reaching up to 7°C (45°F). During this month, the region sees approximately 72 mm (2.8 in) of precipitation spread over 15 days, coupled with a high average humidity of 91%. Prepare for a brisk and damp climate!

December Temperature in Afton

In December in Afton, the average temperature is -7°C (20°F). Maximum temperatures can reach 7°C (45°F), while minimums can plummet to as low as -23°C (-8°F). This chilly weather is perfect for travelers seeking winter adventures or a cozy getaway.

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

The chart illustrates December temperature patterns in Afton, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Afton, December typically has an average temperature of -7°C (20°F), with highs reaching up to 7°C (45°F) and lows dropping to around -23°C (-8°F).
JanFebMarAprMayJunJulAugSepOctNovDec202130344155646152362620
Data source: Temperature data for Afton 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 Afton

In Afton in December, the total precipitation amount is 72 mm (2.8 in) over the course of 15 days.

December Precipitation Trends in Afton

The chart displays monthly precipitation patterns in Afton, 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 Afton, December typically receives around 72 mm (2.8 inches) of precipitation spread over approximately 15 days.
JanFebMarAprMayJunJulAugSepOctNovDec7511566878243203351607372
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Afton

In Afton in December humidity is 91%. With an average temperature of -7°C (20°F), this humidity feels like an icy embrace that clings to your skin, making travel uncomfortable and challenging as every breath feels damp and heavy in the frigid air.

December Average Humidity in Afton

This chart illustrates the average monthly humidity levels in Afton, 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 Afton is approximately 91%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec95%95%90%81%71%64%59%49%52%69%86%91%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Afton

In Afton 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 Afton, you can check the information here.

Maximum UV Index Levels in Afton for December

The chart shows the monthly maximum UV Index (UVI) for Afton 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 Afton typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec35810121211119653
Data source: Afton 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 Afton Compares to Other Months

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

This table compares monthly weather conditions in Afton, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-7°C (21°F)75 mm (2.9 inches)95%moderate
February Weather-6°C (21°F)115 mm (4.5 inches)95%moderate
March Weather-1°C (30°F)66 mm (2.6 inches)90%very high
April Weather1°C (34°F)86 mm (3.4 inches)81%very high
May Weather5°C (41°F)82 mm (3.2 inches)71%extreme
June Weather13°C (55°F)43 mm (1.7 inches)64%extreme
July Weather18°C (64°F)20 mm (0.8 inches)59%extreme
August Weather16°C (62°F)33 mm (1.3 inches)49%extreme
September Weather11°C (52°F)51 mm (2.0 inches)52%very high
October Weather2°C (37°F)60 mm (2.4 inches)69%high
November Weather-3°C (26°F)73 mm (2.9 inches)86%moderate
December Weather-7°C (20°F)72 mm (2.8 inches)91%moderate

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