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December Weather in Sheridan, United States

Last updated: June 24, 2025

In December, the average temperature in Sheridan, United States hovers around 9°C (49°F). Expect a minimum drop to -7°C (20°F) and a maximum rise to 26°C (79°F). With an average precipitation of 158 mm (6.2 in) spread across 10 days, the weather can be quite damp, complemented by a high average humidity of 87%.

December Temperature in Sheridan

In December in Sheridan, the average temperature is 9°C (49°F). Maximum temperatures can reach 26°C (79°F), while minimums can drop as low as -7°C (20°F). Travelers should be prepared for a wide range of temperatures and pack accordingly.

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

The chart illustrates December temperature patterns in Sheridan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sheridan, December typically has an average temperature of 9°C (49°F), with highs reaching up to 26°C (79°F) and lows dropping to around -7°C (20°F).
JanFebMarAprMayJunJulAugSepOctNovDec444757627280828177655249
Data source: Temperature data for Sheridan 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 Sheridan

In Sheridan in December, the precipitation amount is 158 mm (6.2 in) over the course of 10 days.

December Precipitation Trends in Sheridan

The chart displays monthly precipitation patterns in Sheridan, 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 Sheridan, December typically receives around 158 mm (6.2 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec9815315917115311610011510010879158
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Sheridan

In Sheridan in December humidity is 87%. With an average temperature of 9°C (49°F), this humidity feels like a damp blanket wrapping around you, making travel uncomfortable and leaving you yearning for a dry breeze to refresh your spirit.

December Average Humidity in Sheridan

This chart illustrates the average monthly humidity levels in Sheridan, 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 Sheridan is approximately 87%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%79%77%78%82%81%75%61%59%69%82%88%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Sheridan

In Sheridan 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 Sheridan for better planning.

Maximum UV Index Levels in Sheridan for December

The chart shows the monthly maximum UV Index (UVI) for Sheridan 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 Sheridan typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec46810111111109754
Data source: Sheridan 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 Sheridan Compares to Other Months

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

This table compares monthly weather conditions in Sheridan, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather7°C (44°F)98 mm (3.8 inches)82%moderate
February Weather8°C (47°F)153 mm (6.0 inches)79%high
March Weather14°C (58°F)159 mm (6.3 inches)77%very high
April Weather17°C (62°F)171 mm (6.7 inches)78%very high
May Weather22°C (72°F)153 mm (6.0 inches)82%extreme
June Weather26°C (80°F)116 mm (4.6 inches)81%extreme
July Weather28°C (83°F)100 mm (3.9 inches)75%extreme
August Weather27°C (81°F)115 mm (4.5 inches)61%very high
September Weather25°C (77°F)100 mm (3.9 inches)59%very high
October Weather18°C (66°F)108 mm (4.3 inches)69%high
November Weather11°C (53°F)79 mm (3.1 inches)82%moderate
December Weather9°C (49°F)158 mm (6.2 inches)87%moderate

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