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December Weather in Glasgow, United States

Last updated: June 24, 2025

In December, the average temperature in Glasgow, United States is a crisp 3°C (38°F). While chilly days can dip to a minimum of -18°C (0°F), occasional warm spells may reach up to 24°C (76°F). Expect 38 mm (1.5 in) of precipitation spread over about 5 days, contributing to an average humidity level of 86%, creating a uniquely refreshing atmosphere.

December Temperature in Glasgow

In December in Glasgow, the average temperature is 3°C (38°F). Maximum temperatures can reach as high as 24°C (76°F), while the minimum can drop to a chilly -18°C (0°F). It's important to pack layers to stay comfortable during your travels!

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 3°C (38°F), with highs reaching up to 24°C (76°F) and lows dropping to around -18°C (0°F).
JanFebMarAprMayJunJulAugSepOctNovDec313346546676807672574438
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 total precipitation amount is 38 mm (1.5 in) spread over a duration of 5 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 38 mm (1.5 inches) of precipitation spread over approximately 5 days.
JanFebMarAprMayJunJulAugSepOctNovDec6455115107214131109115681125038
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 86%. With an average temperature of 3°C (38°F), this humidity feels like a damp chill that seeps through your layers, making traveling uncomfortable as breath clouds visibly in the crisp air.

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 86%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec80%78%75%77%82%83%81%78%72%72%84%86%
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.
JanFebMarAprMayJunJulAugSepOctNovDec3569101111109643
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 Weather-1°C (31°F)64 mm (2.5 inches)80%moderate
February Weather1°C (33°F)55 mm (2.2 inches)78%moderate
March Weather8°C (46°F)115 mm (4.5 inches)75%high
April Weather12°C (54°F)107 mm (4.2 inches)77%very high
May Weather19°C (66°F)214 mm (8.4 inches)82%very high
June Weather25°C (77°F)131 mm (5.2 inches)83%extreme
July Weather26°C (80°F)109 mm (4.3 inches)81%extreme
August Weather25°C (76°F)115 mm (4.5 inches)78%very high
September Weather22°C (72°F)68 mm (2.7 inches)72%very high
October Weather14°C (58°F)112 mm (4.4 inches)72%high
November Weather7°C (44°F)50 mm (2.0 inches)84%moderate
December Weather3°C (38°F)38 mm (1.5 inches)86%moderate

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