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December Weather in Blackfoot, United States

Last updated: June 24, 2025

In December, the average temperature in Blackfoot, United States hovers around -3°C (26°F), with extremes ranging from a chilly -16°C (3°F) to a milder 12°C (54°F). Expect 40 mm (1.6 in) of precipitation spread over 9 days, and prepare for high humidity levels averaging 91%. Stay cozy and plan accordingly!

December Temperature in Blackfoot

In December in Blackfoot, the average temperature is -3°C (26°F), with a maximum that can reach 12°C (54°F) and a minimum that can dip as low as -16°C (3°F). It's advisable to pack warm clothing and be prepared for varying weather conditions while traveling during this month.

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

The chart illustrates December temperature patterns in Blackfoot, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Blackfoot, December typically has an average temperature of -3°C (26°F), with highs reaching up to 12°C (54°F) and lows dropping to around -16°C (3°F).
JanFebMarAprMayJunJulAugSepOctNovDec242737455466757262463626
Data source: Temperature data for Blackfoot 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 Blackfoot

In Blackfoot in December, the precipitation amount is 40 mm (1.6 in) over the course of 9 days.

December Precipitation Trends in Blackfoot

The chart displays monthly precipitation patterns in Blackfoot, 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 Blackfoot, December typically receives around 40 mm (1.6 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec395044525528121625372940
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Blackfoot

In Blackfoot in December humidity is 91%. With an average temperature of -3°C (26°F), this humidity feels like a biting chill that penetrates through your clothing, making travel uncomfortable and the air crisp with an eerie dampness that can quickly sap your energy.

December Average Humidity in Blackfoot

This chart illustrates the average monthly humidity levels in Blackfoot, 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 Blackfoot 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 Blackfoot

In Blackfoot 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 Blackfoot, you can check the information here.

Maximum UV Index Levels in Blackfoot for December

The chart shows the monthly maximum UV Index (UVI) for Blackfoot 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 Blackfoot typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3578101111109643
Data source: Blackfoot 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 Blackfoot Compares to Other Months

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

This table compares monthly weather conditions in Blackfoot, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-5°C (24°F)39 mm (1.5 inches)95%moderate
February Weather-3°C (27°F)50 mm (2.0 inches)95%moderate
March Weather3°C (37°F)44 mm (1.7 inches)90%high
April Weather7°C (45°F)51 mm (2.0 inches)81%very high
May Weather12°C (55°F)55 mm (2.2 inches)71%very high
June Weather19°C (66°F)28 mm (1.1 inches)64%extreme
July Weather24°C (75°F)12 mm (0.5 inches)59%extreme
August Weather22°C (72°F)15 mm (0.6 inches)49%very high
September Weather17°C (63°F)25 mm (1.0 inches)52%very high
October Weather8°C (46°F)37 mm (1.4 inches)69%high
November Weather2°C (36°F)29 mm (1.1 inches)86%moderate
December Weather-3°C (26°F)40 mm (1.6 inches)91%moderate

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