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December Weather in Reliance, United States

Last updated: June 24, 2025

In December, the average temperature in Reliance, United States hovers around -6°C (21°F), with drastic fluctuations possible—minimums can plummet to -24°C (-10°F), while maximums may reach a mild 13°C (55°F). Expect 22 mm (0.8 in) of precipitation spread over 7 days, contributing to an average humidity level of 90%.

December Temperature in Reliance

In December in Reliance, the average temperature is -6°C (21°F). Maximum temperatures can reach up to 13°C (55°F), while minimums can plunge as low as -24°C (-10°F). Be sure to pack accordingly, as the weather can vary significantly during this time of year.

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

The chart illustrates December temperature patterns in Reliance, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Reliance, December typically has an average temperature of -6°C (21°F), with highs reaching up to 13°C (55°F) and lows dropping to around -24°C (-10°F).
JanFebMarAprMayJunJulAugSepOctNovDec182031405165737060433321
Data source: Temperature data for Reliance 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 Reliance

In Reliance in December, the total precipitation amount is 22 mm (0.8 in), spread over a duration of 7 days.

December Precipitation Trends in Reliance

The chart displays monthly precipitation patterns in Reliance, 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 Reliance, December typically receives around 22 mm (0.8 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec2427384146189921222522
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Reliance

In Reliance in December humidity is 90%. With an average temperature of -6°C (21°F), this humidity feels like a heavy, icy mist that clings to your skin, making every breath feel sharp and cold, which can be quite challenging for traveling.

December Average Humidity in Reliance

This chart illustrates the average monthly humidity levels in Reliance, 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 Reliance is approximately 90%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec92%93%85%73%64%57%45%41%50%70%84%90%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Reliance

In Reliance 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 Reliance, you can check the information here.

Maximum UV Index Levels in Reliance for December

The chart shows the monthly maximum UV Index (UVI) for Reliance 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 Reliance typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec46710111212119753
Data source: Reliance 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 Reliance Compares to Other Months

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

This table compares monthly weather conditions in Reliance, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-8°C (18°F)24 mm (0.9 inches)92%moderate
February Weather-7°C (21°F)27 mm (1.1 inches)93%high
March Weather-1°C (31°F)38 mm (1.5 inches)85%high
April Weather5°C (41°F)41 mm (1.6 inches)73%very high
May Weather11°C (51°F)46 mm (1.8 inches)64%extreme
June Weather18°C (65°F)18 mm (0.7 inches)57%extreme
July Weather23°C (73°F)9 mm (0.4 inches)45%extreme
August Weather21°C (70°F)9 mm (0.4 inches)41%extreme
September Weather16°C (60°F)21 mm (0.8 inches)50%very high
October Weather6°C (43°F)22 mm (0.9 inches)70%high
November Weather1°C (33°F)25 mm (1.0 inches)84%moderate
December Weather-6°C (21°F)22 mm (0.8 inches)90%moderate

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