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December Weather in Moriarty, United States

Last updated: June 24, 2025

In Moriarty, United States, the average temperature in December hovers around 2°C (36°F), with minimums dipping as low as -20°C (-3°F) and maximums reaching up to 18°C (64°F). Expect precipitation of 14 mm (0.6 in) spread over 3 days, while the average humidity stands at a brisk 79%.

December Temperature in Moriarty

In December in Moriarty, the average temperature is 2°C (36°F). The maximum can reach 18°C (64°F) and the minimum can be as low as -20°C (-3°F). Be prepared for a wide range of temperatures during your travels, and dress accordingly!

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

The chart illustrates December temperature patterns in Moriarty, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Moriarty, December typically has an average temperature of 2°C (36°F), with highs reaching up to 18°C (64°F) and lows dropping to around -20°C (-3°F).
JanFebMarAprMayJunJulAugSepOctNovDec333645536272737266534435
Data source: Temperature data for Moriarty 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 Moriarty

In Moriarty in December, the precipitation amount is 14 mm (0.6 in) accumulated over the course of 3 days.

December Precipitation Trends in Moriarty

The chart displays monthly precipitation patterns in Moriarty, 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 Moriarty, December typically receives around 14 mm (0.6 inches) of precipitation spread over approximately 3 days.
JanFebMarAprMayJunJulAugSepOctNovDec212019272324413630381714
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Moriarty

In Moriarty in December, humidity is 79%. With an average temperature of 2°C (36°F), this humidity feels like a damp chill that seeps into your bones, making traveling quite uncomfortable as the cold air clings to your skin and every breath feels heavy and frosty.

December Average Humidity in Moriarty

This chart illustrates the average monthly humidity levels in Moriarty, 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 Moriarty is approximately 79%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec78%79%66%60%57%55%57%65%72%78%81%79%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Moriarty

In Moriarty 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 Moriarty for better planning.

Maximum UV Index Levels in Moriarty for December

The chart shows the monthly maximum UV Index (UVI) for Moriarty 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 Moriarty typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec579111213131211864
Data source: Moriarty 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 Moriarty Compares to Other Months

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

This table compares monthly weather conditions in Moriarty, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather1°C (33°F)21 mm (0.8 inches)78%moderate
February Weather2°C (36°F)20 mm (0.8 inches)79%high
March Weather7°C (45°F)19 mm (0.8 inches)66%very high
April Weather11°C (53°F)27 mm (1.0 inches)60%extreme
May Weather17°C (62°F)23 mm (0.9 inches)57%extreme
June Weather22°C (72°F)24 mm (0.9 inches)55%extreme
July Weather23°C (74°F)41 mm (1.6 inches)56%extreme
August Weather22°C (72°F)36 mm (1.4 inches)65%extreme
September Weather19°C (67°F)30 mm (1.2 inches)72%extreme
October Weather12°C (54°F)38 mm (1.5 inches)78%very high
November Weather6°C (44°F)17 mm (0.7 inches)81%high
December Weather2°C (36°F)14 mm (0.6 inches)79%moderate

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