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December Weather in Jasper, United States

Last updated: June 24, 2025

In December, the average temperature in Jasper, United States hovers around 4°C (40°F). Expect a wide range, with minimums dipping to -16°C (4°F) and maximums reaching 22°C (71°F). Be prepared for moisture, as 107 mm (4.2 in) of precipitation typically falls over 10 days. With an average humidity of 87%, the atmosphere can feel quite crisp throughout the month!

December Temperature in Jasper

In December in Jasper, the average temperature is 4°C (40°F), with maximums reaching 22°C (71°F) and minimums plummeting to as low as -16°C (4°F). Travelers should be prepared for a wide range of temperatures, ensuring they pack both warm layers and lighter clothing for the fluctuating weather.

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

The chart illustrates December temperature patterns in Jasper, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Jasper, December typically has an average temperature of 4°C (40°F), with highs reaching up to 22°C (71°F) and lows dropping to around -16°C (4°F).
JanFebMarAprMayJunJulAugSepOctNovDec343847566876797772604440
Data source: Temperature data for Jasper 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 Jasper

In Jasper in December, the precipitation amount is 107 mm (4.2 in) accumulated over a period of 10 days.

December Precipitation Trends in Jasper

The chart displays monthly precipitation patterns in Jasper, 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 Jasper, December typically receives around 107 mm (4.2 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec9011915012714313779888110797107
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Jasper

In Jasper in December humidity is 87%. With an average temperature of 4°C (40°F), this humidity feels like an uncomfortable chill that seeps into your bones, making it essential to dress warmly and prepare for damp conditions, which can dampen your spirits while traveling.

December Average Humidity in Jasper

This chart illustrates the average monthly humidity levels in Jasper, 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 Jasper is approximately 87%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%85%86%84%79%82%79%70%69%76%88%87%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Jasper

In Jasper 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 Jasper, you can check the information here.

Maximum UV Index Levels in Jasper for December

The chart shows the monthly maximum UV Index (UVI) for Jasper 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 Jasper typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3571010111099643
Data source: Jasper 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 Jasper Compares to Other Months

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

This table compares monthly weather conditions in Jasper, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather1°C (34°F)90 mm (3.5 inches)87%moderate
February Weather3°C (38°F)119 mm (4.7 inches)85%moderate
March Weather8°C (47°F)150 mm (5.9 inches)86%high
April Weather13°C (56°F)127 mm (5.0 inches)84%very high
May Weather20°C (68°F)143 mm (5.6 inches)79%very high
June Weather24°C (76°F)136 mm (5.4 inches)82%extreme
July Weather26°C (79°F)79 mm (3.1 inches)79%very high
August Weather25°C (77°F)88 mm (3.5 inches)70%very high
September Weather22°C (72°F)81 mm (3.2 inches)69%very high
October Weather16°C (61°F)107 mm (4.2 inches)76%high
November Weather7°C (45°F)96 mm (3.8 inches)88%moderate
December Weather4°C (40°F)107 mm (4.2 inches)87%moderate

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