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December Weather in Smithers, United States

Last updated: June 24, 2025

In December, the average temperature in Smithers, United States hovers around 5°C (41°F). Tempers can dip as low as -14°C (7°F), while occasionally reaching a pleasant 21°C (70°F). Expect about 126 mm (4.9 in) of precipitation over 14 days, contributing to an average humidity level of 86%. Stay prepared for the elements and enjoy this unique climate!

December Temperature in Smithers

In December in Smithers, the average temperature is 5°C (41°F). Maximum temperatures can reach 21°C (70°F), while minimums can drop as low as -14°C (7°F). Be prepared for a wide range of temperatures if you're planning to travel during this time!

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

The chart illustrates December temperature patterns in Smithers, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Smithers, December typically has an average temperature of 5°C (41°F), with highs reaching up to 21°C (70°F) and lows dropping to around -14°C (7°F).
JanFebMarAprMayJunJulAugSepOctNovDec364146556571757369594540
Data source: Temperature data for Smithers 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 Smithers

In Smithers in December, the precipitation amount is 126 mm (4.9 in) distributed over 14 days.

December Precipitation Trends in Smithers

The chart displays monthly precipitation patterns in Smithers, 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 Smithers, December typically receives around 126 mm (4.9 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec10216212713716415212411910211982126
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Smithers

In Smithers in December humidity is 86%. With an average temperature of 5°C (41°F), this humidity feels like a heavy, damp blanket wrapping around you, making outdoor activities uncomfortable and travel quite challenging due to the chill combined with the stickiness in the air.

December Average Humidity in Smithers

This chart illustrates the average monthly humidity levels in Smithers, 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 Smithers is approximately 86%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%88%88%87%82%84%82%73%74%81%89%86%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Smithers

In Smithers 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 Smithers, you can check the information here.

Maximum UV Index Levels in Smithers for December

The chart shows the monthly maximum UV Index (UVI) for Smithers 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 Smithers typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3579101010109753
Data source: Smithers 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 Smithers Compares to Other Months

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

This table compares monthly weather conditions in Smithers, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather2°C (36°F)101 mm (4.0 inches)88%moderate
February Weather5°C (41°F)162 mm (6.4 inches)88%moderate
March Weather8°C (47°F)127 mm (5.0 inches)88%high
April Weather13°C (55°F)137 mm (5.4 inches)86%very high
May Weather18°C (65°F)164 mm (6.5 inches)82%very high
June Weather21°C (71°F)152 mm (6.0 inches)84%very high
July Weather24°C (75°F)124 mm (4.9 inches)82%very high
August Weather23°C (73°F)119 mm (4.7 inches)73%very high
September Weather20°C (69°F)102 mm (4.0 inches)73%very high
October Weather15°C (60°F)119 mm (4.7 inches)81%high
November Weather7°C (45°F)82 mm (3.2 inches)89%moderate
December Weather5°C (41°F)126 mm (4.9 inches)86%moderate

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