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December Weather in Hartman, United States

Last updated: June 24, 2025

In December, the average temperature in Hartman, United States hovers around 7°C (45°F). Be prepared for a range of temperatures, with a minimum dipping to -8°C (18°F) and a maximum soaring up to 24°C (76°F). Expect around 108 mm (4.2 in) of precipitation spread over 8 days, contributing to a high average humidity of 87%.

December Temperature in Hartman

In December in Hartman, the average temperature is 7°C (45°F). Maximum temperatures can reach up to 24°C (76°F), while minimums can drop as low as -8°C (18°F). Be prepared for a wide range of temperatures when traveling during this time!

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

The chart illustrates December temperature patterns in Hartman, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hartman, December typically has an average temperature of 7°C (45°F), with highs reaching up to 24°C (76°F) and lows dropping to around -8°C (18°F).
JanFebMarAprMayJunJulAugSepOctNovDec394253586876807874624945
Data source: Temperature data for Hartman 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 Hartman

In Hartman in December, the precipitation amount is 108 mm (4.2 in), which occurs over a span of 8 days.

December Precipitation Trends in Hartman

The chart displays monthly precipitation patterns in Hartman, 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 Hartman, December typically receives around 108 mm (4.2 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec100139159161217112801246911396108
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Hartman

In Hartman in December, humidity is 87%. With an average temperature of 7°C (45°F), this humidity feels like a damp chill that seeps into your bones, making outdoor adventures somewhat uncomfortable and urging travelers to seek refuge in cozy cafes or warm indoor activities.

December Average Humidity in Hartman

This chart illustrates the average monthly humidity levels in Hartman, 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 Hartman is approximately 87%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%79%77%78%82%81%75%61%59%69%82%88%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Hartman

In Hartman 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 Hartman for better planning.

Maximum UV Index Levels in Hartman for December

The chart shows the monthly maximum UV Index (UVI) for Hartman 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 Hartman typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec46810111111109754
Data source: Hartman 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 Hartman Compares to Other Months

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

This table compares monthly weather conditions in Hartman, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather4°C (40°F)100 mm (3.9 inches)82%moderate
February Weather6°C (43°F)139 mm (5.5 inches)79%high
March Weather11°C (53°F)159 mm (6.3 inches)77%very high
April Weather15°C (58°F)161 mm (6.3 inches)78%very high
May Weather20°C (68°F)217 mm (8.5 inches)82%extreme
June Weather25°C (76°F)112 mm (4.4 inches)81%extreme
July Weather27°C (80°F)80 mm (3.2 inches)75%extreme
August Weather26°C (78°F)124 mm (4.9 inches)61%very high
September Weather24°C (75°F)69 mm (2.7 inches)59%very high
October Weather16°C (62°F)113 mm (4.5 inches)69%high
November Weather9°C (49°F)96 mm (3.8 inches)82%moderate
December Weather7°C (45°F)108 mm (4.2 inches)87%moderate

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