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December Weather in Logan, United States

Last updated: June 24, 2025

In Logan, United States, the average temperature in December hovers around -1°C (30°F). However, be prepared for a temperature range that can drop as low as -23°C (-9°F) and spike up to 21°C (70°F). Expect about 39 mm (1.5 in) of precipitation over 4 days, and a notable average humidity of 83% to keep the atmosphere crisp.

December Temperature in Logan

In December in Logan, the average temperature is -1°C (30°F). Maximums can reach 21°C (70°F) and minimums can dip as low as -23°C (-9°F). Travelers should be prepared for a wide range of temperatures and pack accordingly to enjoy their trip.

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 (30°F), with highs reaching up to 21°C (70°F) and lows dropping to around -23°C (-9°F).
JanFebMarAprMayJunJulAugSepOctNovDec242440496275777368523930
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 39 mm (1.5 in) spread over a period of 4 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 39 mm (1.5 inches) of precipitation spread over approximately 4 days.
JanFebMarAprMayJunJulAugSepOctNovDec2935866315911565117891123139
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 (30°F), this humidity feels like a biting chill that seeps through your layers, making outdoor activities uncomfortable and encouraging travelers to seek shelter indoors.

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.
JanFebMarAprMayJunJulAugSepOctNovDec76%80%73%75%78%82%83%81%75%75%82%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 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in Logan, you can visit Hourly UV Index in Logan.

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 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356810101098642
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-5°C (24°F)29 mm (1.1 inches)76%moderate
February Weather-5°C (24°F)35 mm (1.4 inches)80%moderate
March Weather4°C (40°F)86 mm (3.4 inches)73%high
April Weather9°C (49°F)63 mm (2.5 inches)74%very high
May Weather17°C (62°F)159 mm (6.2 inches)78%very high
June Weather24°C (75°F)115 mm (4.5 inches)82%very high
July Weather25°C (77°F)65 mm (2.5 inches)83%very high
August Weather23°C (74°F)117 mm (4.6 inches)80%very high
September Weather20°C (69°F)89 mm (3.5 inches)75%very high
October Weather11°C (52°F)112 mm (4.4 inches)75%high
November Weather4°C (39°F)31 mm (1.2 inches)82%moderate
December Weather-1°C (30°F)39 mm (1.5 inches)83%low

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