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December Weather in Logan, United States

Last updated: June 24, 2025

In December, the average temperature in Logan, United States hovers around 1°C (34°F). While this chilly period can see temperatures drop as low as -21°C (-6°F), it can also rise to a pleasant 23°C (74°F) at times. Expect 33 mm (1.3 in) of precipitation spread over 3 days, accompanied by an average humidity of 83%, creating a cool and damp atmosphere.

December Temperature in Logan

In December in Logan, the average temperature is 1°C (34°F). The maximum can reach 23°C (74°F), while the minimum can plunge to as low as -21°C (-6°F). Be prepared for a wide range of temperatures when traveling during this time.

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

The chart illustrates December temperature patterns in Logan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Logan, December typically has an average temperature of 1°C (34°F), with highs reaching up to 23°C (74°F) and lows dropping to around -21°C (-6°F).
JanFebMarAprMayJunJulAugSepOctNovDec292943526376807670534334
Data source: Temperature data for Logan 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 Logan

In Logan in December, the precipitation amount is 33 mm (1.3 in) over the course of 3 days.

December Precipitation Trends in Logan

The chart displays monthly precipitation patterns in Logan, 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 Logan, December typically receives around 33 mm (1.3 inches) of precipitation spread over approximately 3 days.
JanFebMarAprMayJunJulAugSepOctNovDec2418733916767789472591733
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Logan

In Logan in December, humidity is 83%. With an average temperature of 1°C (34°F), this humidity feels like a chilling embrace, making travel uncomfortable as the damp cold seeps into your bones, adding an extra layer of heaviness to the air that can leave you feeling sluggish and fatigued.

December Average Humidity in Logan

This chart illustrates the average monthly humidity levels in Logan, 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 Logan is approximately 83%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec75%78%67%70%82%81%80%80%74%71%79%83%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Logan

In Logan 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 Logan, you can check the information here.

Maximum UV Index Levels in Logan for December

The chart shows the monthly maximum UV Index (UVI) for Logan 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 Logan typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3579101111109643
Data source: Logan 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 Logan Compares to Other Months

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

This table compares monthly weather conditions in Logan, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (29°F)24 mm (0.9 inches)74%moderate
February Weather-1°C (30°F)18 mm (0.7 inches)78%moderate
March Weather6°C (43°F)73 mm (2.9 inches)67%high
April Weather11°C (52°F)39 mm (1.5 inches)70%very high
May Weather17°C (63°F)167 mm (6.6 inches)82%very high
June Weather25°C (77°F)67 mm (2.6 inches)81%extreme
July Weather26°C (80°F)78 mm (3.1 inches)80%extreme
August Weather24°C (76°F)94 mm (3.7 inches)80%very high
September Weather21°C (71°F)72 mm (2.8 inches)73%very high
October Weather12°C (54°F)59 mm (2.3 inches)71%high
November Weather6°C (43°F)17 mm (0.7 inches)79%moderate
December Weather1°C (34°F)33 mm (1.3 inches)83%moderate

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