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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 5°C (41°F). Temperatures can dip as low as -10°C (14°F) and peak at a cozy 24°C (75°F). Expect a precipitation amount of approximately 11 mm (0.4 in) over just 1 day, while the air remains relatively moist with an average humidity of 77%.

December Temperature in Logan

In December in Logan, the average temperature is 5°C (41°F), with a maximum that can reach 24°C (75°F) and a minimum that can drop as low as -10°C (14°F). Be prepared for a wide range of temperatures during your visit, from mild days to chilly nights.

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 5°C (41°F), with highs reaching up to 24°C (75°F) and lows dropping to around -10°C (14°F).
JanFebMarAprMayJunJulAugSepOctNovDec394252596978817973594941
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 11 mm (0.4 in) over the course of one day.

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 11 mm (0.4 inches) of precipitation spread over approximately 1 days.
JanFebMarAprMayJunJulAugSepOctNovDec14830333740264730521111
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 77%. With an average temperature of 5°C (41°F), this humidity feels like a damp chill that seeps into your bones, making traveling quite uncomfortable unless you're bundled up in warm layers.

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 77%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec74%75%61%62%69%74%75%78%76%76%80%77%
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 reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Logan for better planning.

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 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec469111112121210854
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 Weather4°C (39°F)14 mm (0.6 inches)74%moderate
February Weather6°C (43°F)8 mm (0.3 inches)75%high
March Weather11°C (52°F)30 mm (1.2 inches)61%very high
April Weather15°C (59°F)33 mm (1.3 inches)61%extreme
May Weather20°C (69°F)37 mm (1.5 inches)69%extreme
June Weather26°C (79°F)39 mm (1.6 inches)74%extreme
July Weather27°C (81°F)26 mm (1.0 inches)75%extreme
August Weather26°C (79°F)47 mm (1.8 inches)78%extreme
September Weather23°C (73°F)30 mm (1.2 inches)76%very high
October Weather15°C (59°F)51 mm (2.0 inches)76%very high
November Weather9°C (49°F)11 mm (0.4 inches)80%moderate
December Weather5°C (41°F)11 mm (0.4 inches)77%moderate

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