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December Weather in Lamar, United States

Last updated: June 24, 2025

In December in Lamar, United States, the average temperature hovers around 3°C (37°F). Expect a possible minimum of -15°C (6°F) and a balmy maximum of 23°C (74°F). The region experiences a precipitation amount of 11 mm (0.4 in) over approximately 3 days, with an average humidity of 78%.

December Temperature in Lamar

In December in Lamar, the average temperature is 3°C (37°F). Maximums can reach 23°C (74°F), while minimums can drop as low as -15°C (6°F). This variation in temperature makes it essential to pack layers for any travel plans.

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

The chart illustrates December temperature patterns in Lamar, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Lamar, December typically has an average temperature of 3°C (37°F), with highs reaching up to 23°C (74°F) and lows dropping to around -15°C (6°F).
JanFebMarAprMayJunJulAugSepOctNovDec343547556476807772554537
Data source: Temperature data for Lamar 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 Lamar

In Lamar in December, the precipitation amount is 11 mm (0.4 in) over the course of 3 days.

December Precipitation Trends in Lamar

The chart displays monthly precipitation patterns in Lamar, 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 Lamar, December typically receives around 11 mm (0.4 inches) of precipitation spread over approximately 3 days.
JanFebMarAprMayJunJulAugSepOctNovDec17152736663849493025911
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Lamar

In Lamar in December humidity is 78%. With an average temperature of 3°C (37°F), this humidity feels like a damp chill that penetrates your clothing, making it vital to bundle up while exploring the surroundings.

December Average Humidity in Lamar

This chart illustrates the average monthly humidity levels in Lamar, 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 Lamar is approximately 78%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec73%76%64%61%71%75%75%80%80%78%76%78%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Lamar

In Lamar 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 Lamar, you can check the information here.

Maximum UV Index Levels in Lamar for December

The chart shows the monthly maximum UV Index (UVI) for Lamar 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 Lamar typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec458101112121110753
Data source: Lamar 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 Lamar Compares to Other Months

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

This table compares monthly weather conditions in Lamar, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather1°C (35°F)16 mm (0.6 inches)73%moderate
February Weather2°C (35°F)15 mm (0.6 inches)76%moderate
March Weather8°C (48°F)27 mm (1.1 inches)64%very high
April Weather13°C (55°F)36 mm (1.4 inches)61%very high
May Weather18°C (64°F)66 mm (2.6 inches)71%extreme
June Weather25°C (77°F)38 mm (1.5 inches)75%extreme
July Weather27°C (80°F)49 mm (1.9 inches)75%extreme
August Weather25°C (77°F)49 mm (1.9 inches)80%extreme
September Weather22°C (72°F)30 mm (1.2 inches)80%very high
October Weather13°C (55°F)25 mm (1.0 inches)78%high
November Weather7°C (45°F)9 mm (0.4 inches)76%moderate
December Weather3°C (37°F)11 mm (0.4 inches)78%moderate

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