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December Weather in Glasgow, United States

Last updated: June 24, 2025

In Glasgow, United States, the average temperature in December hovers around 6°C (44°F). Expect a chilly minimum of -11°C (12°F) and a pleasant maximum of 22°C (73°F). Precipitation can be significant, with an average of 145 mm (5.7 in) over 11 days, and humidity often peaks at a cozy 88%. Prepare for a month of varied weather!

December Temperature in Glasgow

In December in Glasgow, the average temperature is 6°C (44°F), with maximums reaching 22°C (73°F) and minimums plummeting to as low as -11°C (12°F). Overall, this makes Glasgow a destination where travelers should prepare for a wide range of temperatures.

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

The chart illustrates December temperature patterns in Glasgow, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Glasgow, December typically has an average temperature of 6°C (44°F), with highs reaching up to 22°C (73°F) and lows dropping to around -11°C (12°F).
JanFebMarAprMayJunJulAugSepOctNovDec384350586976807773624743
Data source: Temperature data for Glasgow 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 Glasgow

In Glasgow, in December, the precipitation amount is 145 mm (5.7 in) over a span of 11 days.

December Precipitation Trends in Glasgow

The chart displays monthly precipitation patterns in Glasgow, 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 Glasgow, December typically receives around 145 mm (5.7 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec10218414515712316411712912914192145
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Glasgow

In Glasgow in December humidity is 88%. With an average temperature of 6°C (44°F), this humidity feels like a damp chill that seeps into your bones, making outdoor adventures less inviting and requiring warm, layered clothing to stay comfortable while exploring.

December Average Humidity in Glasgow

This chart illustrates the average monthly humidity levels in Glasgow, 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 Glasgow is approximately 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%86%86%82%83%83%80%74%71%78%88%88%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Glasgow

In Glasgow 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 Glasgow, you can check the information here.

Maximum UV Index Levels in Glasgow for December

The chart shows the monthly maximum UV Index (UVI) for Glasgow 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 Glasgow typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3679101111109753
Data source: Glasgow 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 Glasgow Compares to Other Months

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

This table compares monthly weather conditions in Glasgow, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather4°C (39°F)102 mm (4.0 inches)87%moderate
February Weather6°C (43°F)184 mm (7.3 inches)86%high
March Weather10°C (51°F)145 mm (5.7 inches)86%high
April Weather14°C (58°F)157 mm (6.2 inches)82%very high
May Weather21°C (69°F)123 mm (4.8 inches)82%very high
June Weather24°C (76°F)164 mm (6.5 inches)83%extreme
July Weather26°C (80°F)117 mm (4.6 inches)80%extreme
August Weather25°C (78°F)129 mm (5.1 inches)74%very high
September Weather23°C (73°F)129 mm (5.1 inches)71%very high
October Weather17°C (62°F)141 mm (5.6 inches)78%high
November Weather8°C (47°F)92 mm (3.6 inches)88%moderate
December Weather6°C (44°F)145 mm (5.7 inches)88%moderate

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