December Weather in Porterdale, United States

Last updated: June 24, 2025

The average temperature in Porterdale, United States during December is a cool 10°C (49°F). Expect to experience a minimum of -5°C (23°F) and a maximum of 25°C (77°F). Additionally, you'll likely encounter around 135 mm (5.3 in) of precipitation spread over 11 days, contributing to the area's high average humidity of 89%.

December Temperature in Porterdale

In December in Porterdale, the average temperature is 10°C (49°F), with maximums reaching 25°C (77°F) and minimums dipping as low as -5°C (23°F). This diverse temperature range makes Porterdale an ideal destination for travelers seeking both warm and cool experiences.

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

The chart illustrates December temperature patterns in Porterdale, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Porterdale, December typically has an average temperature of 10°C (49°F), with highs reaching up to 25°C (77°F) and lows dropping to around -5°C (23°F).
JanFebMarAprMayJunJulAugSepOctNovDec465257637277807976675349
Data source: Temperature data for Porterdale 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 Porterdale

In Porterdale in December, the precipitation amount is 135 mm (5.3 in) over the course of 11 days.

December Precipitation Trends in Porterdale

The chart displays monthly precipitation patterns in Porterdale, 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 Porterdale, December typically receives around 135 mm (5.3 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec1011331081149811510613010610780135
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Porterdale

In Porterdale in December, humidity is 89%. With an average temperature of 10°C (49°F), this humidity feels like a damp chill that penetrates your clothes and makes outdoor activities uncomfortable, often leaving travelers feeling clammy and in need of extra layers to stay warm.

December Average Humidity in Porterdale

This chart illustrates the average monthly humidity levels in Porterdale, 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 Porterdale is approximately 89%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%84%83%81%81%81%83%81%82%78%86%89%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Porterdale

In Porterdale 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 Porterdale for better planning.

Maximum UV Index Levels in Porterdale for December

The chart shows the monthly maximum UV Index (UVI) for Porterdale 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 Porterdale typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec47910111111109864
Data source: Porterdale 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 Porterdale Compares to Other Months

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

This table compares monthly weather conditions in Porterdale, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather8°C (47°F)101 mm (4.0 inches)86%moderate
February Weather11°C (52°F)133 mm (5.2 inches)84%high
March Weather14°C (57°F)108 mm (4.2 inches)83%very high
April Weather17°C (63°F)114 mm (4.5 inches)81%very high
May Weather22°C (72°F)98 mm (3.8 inches)81%extreme
June Weather25°C (77°F)115 mm (4.5 inches)81%extreme
July Weather27°C (80°F)106 mm (4.2 inches)83%extreme
August Weather26°C (80°F)130 mm (5.1 inches)81%very high
September Weather24°C (76°F)106 mm (4.2 inches)82%very high
October Weather19°C (67°F)107 mm (4.2 inches)78%very high
November Weather12°C (53°F)80 mm (3.1 inches)86%high
December Weather10°C (49°F)135 mm (5.3 inches)89%moderate

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