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December Weather in Melville, United States

Last updated: June 24, 2025

In December, the average temperature in Melville, United States is a mild 13°C (56°F), with fluctuations that can reach a minimum of -3°C (27°F) and a maximum of 29°C (84°F). The area experiences an average precipitation of 117 mm (4.6 in) over approximately 12 days, resulting in a high average humidity of 88%. Be prepared for a blend of cool and warm weather, accompanied by dampness throughout the month!

December Temperature in Melville

In December in Melville, the average temperature is 13°C (56°F). Maximum temperatures can reach 29°C (84°F) and the minimum can drop as low as -3°C (27°F). Be prepared for a range of weather conditions to make the most of your trip!

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

The chart illustrates December temperature patterns in Melville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Melville, December typically has an average temperature of 13°C (56°F), with highs reaching up to 29°C (84°F) and lows dropping to around -3°C (27°F).
JanFebMarAprMayJunJulAugSepOctNovDec525764687681828280725955
Data source: Temperature data for Melville 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 Melville

In Melville in December, the total precipitation amount is 117 mm (4.6 in), occurring over a span of 12 days.

December Precipitation Trends in Melville

The chart displays monthly precipitation patterns in Melville, 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 Melville, December typically receives around 117 mm (4.6 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec1141108716717214916513111510977117
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Melville

In Melville in December, humidity is 88%. With an average temperature of 13°C (56°F), this humidity feels like a thick, warm blanket wrapping around you, making outdoor adventures sticky and challenging.

December Average Humidity in Melville

This chart illustrates the average monthly humidity levels in Melville, 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 Melville is approximately 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec83%83%80%81%81%78%79%79%79%77%85%88%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Melville

In Melville 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 Melville for better planning.

Maximum UV Index Levels in Melville for December

The chart shows the monthly maximum UV Index (UVI) for Melville 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 Melville typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec589111112121110864
Data source: Melville 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 Melville Compares to Other Months

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

This table compares monthly weather conditions in Melville, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather11°C (52°F)114 mm (4.5 inches)83%moderate
February Weather14°C (57°F)110 mm (4.3 inches)83%very high
March Weather18°C (64°F)87 mm (3.4 inches)80%very high
April Weather20°C (68°F)167 mm (6.6 inches)81%extreme
May Weather24°C (76°F)172 mm (6.8 inches)81%extreme
June Weather27°C (81°F)149 mm (5.8 inches)78%extreme
July Weather28°C (83°F)165 mm (6.5 inches)79%extreme
August Weather28°C (82°F)131 mm (5.1 inches)79%extreme
September Weather26°C (80°F)115 mm (4.5 inches)79%very high
October Weather22°C (72°F)109 mm (4.3 inches)77%very high
November Weather15°C (59°F)77 mm (3.0 inches)85%high
December Weather13°C (56°F)117 mm (4.6 inches)88%moderate

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