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December Weather in Longtown, United States

Last updated: June 24, 2025

In December, the average temperature in Longtown, United States hovers around 8°C (47°F), with a minimum drop to -5°C (24°F) and a maximum rise to 24°C (75°F). Expect approximately 71 mm (2.8 in) of precipitation, spread over about 6 days. The air remains quite humid, with an average humidity of 87%, making for a refreshing but damp atmosphere.

December Temperature in Longtown

In December in Longtown, the average temperature is 8°C (47°F). Maximum temperatures can reach 24°C (75°F), while the minimum can drop as low as -5°C (24°F). Travelers should be prepared for a wide range of temperatures, making layering essential for comfort during their visit.

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

The chart illustrates December temperature patterns in Longtown, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Longtown, December typically has an average temperature of 8°C (47°F), with highs reaching up to 24°C (75°F) and lows dropping to around -5°C (24°F).
JanFebMarAprMayJunJulAugSepOctNovDec414355617179838177645247
Data source: Temperature data for Longtown 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 Longtown

In Longtown in December, the precipitation amount is 71 mm (2.8 in) over a span of 6 days.

December Precipitation Trends in Longtown

The chart displays monthly precipitation patterns in Longtown, 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 Longtown, December typically receives around 71 mm (2.8 inches) of precipitation spread over approximately 6 days.
JanFebMarAprMayJunJulAugSepOctNovDec7994104128188687390941305671
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Longtown

In Longtown in December, humidity is 87%. With an average temperature of 8°C (47°F), this humidity feels like a damp chill that clings to your skin, making outdoor exploration uncomfortably muggy despite the cool air.

December Average Humidity in Longtown

This chart illustrates the average monthly humidity levels in Longtown, 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 Longtown is approximately 87%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec79%78%75%75%83%82%78%68%64%71%82%87%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Longtown

In Longtown 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 Longtown for better planning.

Maximum UV Index Levels in Longtown for December

The chart shows the monthly maximum UV Index (UVI) for Longtown 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 Longtown typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec46710101111119754
Data source: Longtown 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 Longtown Compares to Other Months

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

This table compares monthly weather conditions in Longtown, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (42°F)79 mm (3.1 inches)79%moderate
February Weather6°C (44°F)94 mm (3.7 inches)78%high
March Weather13°C (55°F)104 mm (4.1 inches)75%high
April Weather16°C (61°F)128 mm (5.0 inches)75%very high
May Weather21°C (71°F)188 mm (7.4 inches)83%very high
June Weather26°C (80°F)68 mm (2.7 inches)81%extreme
July Weather28°C (83°F)73 mm (2.9 inches)78%extreme
August Weather27°C (82°F)90 mm (3.5 inches)68%extreme
September Weather25°C (77°F)94 mm (3.7 inches)64%very high
October Weather18°C (64°F)130 mm (5.1 inches)71%high
November Weather11°C (52°F)55 mm (2.2 inches)82%moderate
December Weather8°C (47°F)71 mm (2.8 inches)87%moderate

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