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December Weather in Porter, United States

Last updated: June 24, 2025

In December, the average temperature in Porter, United States hovers around -3°C (27°F). Expect a chilling minimum of -26°C (-14°F) and a surprisingly mild maximum of 15°C (59°F). Along with these temperatures, anticipate 120 mm (4.7 in) of precipitation spread over about 10 days, contributing to an average humidity of 81%. Prepare accordingly!

December Temperature in Porter

In December in Porter, the average temperature is -3°C (27°F), with maximums that can reach 15°C (59°F) and minimums that can plunge to as low as -26°C (-14°F). Travelers should be prepared for a wide range of temperatures, ensuring they pack appropriately for both chilly and mild conditions.

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

The chart illustrates December temperature patterns in Porter, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Porter, December typically has an average temperature of -3°C (27°F), with highs reaching up to 15°C (59°F) and lows dropping to around -26°C (-14°F).
JanFebMarAprMayJunJulAugSepOctNovDec222532445566717063513727
Data source: Temperature data for Porter 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 Porter

In Porter in December, the precipitation amount is 120 mm (4.7 in) spread over a duration of 10 days.

December Precipitation Trends in Porter

The chart displays monthly precipitation patterns in Porter, 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 Porter, December typically receives around 120 mm (4.7 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec81907813178951488665127113121
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Porter

In Porter in December humidity is 81%. With an average temperature of -3°C (27°F), this humidity feels like a biting chill that seeps into your bones, making traveling uncomfortable and forcing you to bundle up tightly to fend off the cold dampness.

December Average Humidity in Porter

This chart illustrates the average monthly humidity levels in Porter, 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 Porter is approximately 81%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%84%82%80%72%72%67%66%71%79%84%81%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Porter

In Porter in December, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in Porter, you can visit Hourly UV Index in Porter.

Maximum UV Index Levels in Porter for December

The chart shows the monthly maximum UV Index (UVI) for Porter 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 Porter typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3458910997532
Data source: Porter 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 Porter Compares to Other Months

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

This table compares monthly weather conditions in Porter, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-5°C (23°F)81 mm (3.2 inches)86%moderate
February Weather-4°C (25°F)90 mm (3.6 inches)84%moderate
March Weather0°C (32°F)78 mm (3.1 inches)82%moderate
April Weather6°C (44°F)131 mm (5.2 inches)80%very high
May Weather13°C (56°F)78 mm (3.1 inches)72%very high
June Weather19°C (66°F)95 mm (3.7 inches)72%very high
July Weather22°C (71°F)148 mm (5.8 inches)67%very high
August Weather21°C (70°F)86 mm (3.4 inches)66%very high
September Weather17°C (63°F)65 mm (2.6 inches)71%high
October Weather11°C (51°F)127 mm (5.0 inches)78%moderate
November Weather3°C (37°F)113 mm (4.4 inches)84%moderate
December Weather-3°C (27°F)120 mm (4.7 inches)81%low

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