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December Weather in Potrero, United States

Last updated: June 24, 2025

In December, the average temperature in Potrero, United States hovers around 11°C (52°F). While you might experience a brisk dip to a minimum of -1°C (31°F), warmer days can soar up to 27°C (82°F). Expect approximately 53 mm (2.1 in) of precipitation spread over 6 days, contributing to an average humidity of 74%.

December Temperature in Potrero

In December in Potrero, the average temperature is 11°C (52°F). The maximum can reach 27°C (82°F), while the minimum can drop to -1°C (31°F). This makes Potrero an ideal destination for travelers seeking a mix of mild and warm weather, perfect for outdoor activities and exploring.

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

The chart illustrates December temperature patterns in Potrero, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Potrero, December typically has an average temperature of 11°C (52°F), with highs reaching up to 27°C (82°F) and lows dropping to around -1°C (31°F).
JanFebMarAprMayJunJulAugSepOctNovDec525152596170767773665952
Data source: Temperature data for Potrero 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 Potrero

In Potrero in December, the precipitation amount is 53 mm (2.1 in) over a span of 6 days.

December Precipitation Trends in Potrero

The chart displays monthly precipitation patterns in Potrero, 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 Potrero, December typically receives around 53 mm (2.1 inches) of precipitation spread over approximately 6 days.
JanFebMarAprMayJunJulAugSepOctNovDec5268582122211128132453
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Potrero

In Potrero in December, humidity is 74%. With an average temperature of 11°C (52°F), this humidity feels like a damp chill in the air, making travel outdoors feel heavier and more cumbersome, often leading to discomfort and a need for warmer clothing.

December Average Humidity in Potrero

This chart illustrates the average monthly humidity levels in Potrero, 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 Potrero is approximately 74%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec72%77%67%56%46%48%46%42%52%58%66%74%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Potrero

In Potrero 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 Potrero for better planning.

Maximum UV Index Levels in Potrero for December

The chart shows the monthly maximum UV Index (UVI) for Potrero 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 Potrero typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec579111212121211864
Data source: Potrero 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 Potrero Compares to Other Months

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

This table compares monthly weather conditions in Potrero, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather11°C (52°F)52 mm (2.0 inches)72%moderate
February Weather10°C (51°F)68 mm (2.7 inches)77%high
March Weather11°C (53°F)58 mm (2.3 inches)67%very high
April Weather15°C (59°F)21 mm (0.8 inches)56%extreme
May Weather16°C (62°F)22 mm (0.9 inches)46%extreme
June Weather21°C (70°F)2 mm (0.1 inches)48%extreme
July Weather25°C (76°F)11 mm (0.4 inches)46%extreme
August Weather25°C (77°F)12 mm (0.5 inches)42%extreme
September Weather23°C (73°F)8 mm (0.3 inches)52%extreme
October Weather19°C (66°F)13 mm (0.5 inches)58%very high
November Weather15°C (60°F)24 mm (1.0 inches)66%high
December Weather11°C (52°F)53 mm (2.1 inches)74%moderate

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