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December Weather in Ramona, United States

Last updated: June 24, 2025

In Ramona, United States, the average temperature in December hovers around 6°C (43°F). However, be prepared for a wide range, with minimums plunging to -10°C (15°F) and maximums reaching up to 25°C (77°F). Rainfall is also a factor, with approximately 39 mm (1.5 in) expected over 5 days, and the air feels quite humid, averaging 85%.

December Temperature in Ramona

In December in Ramona, the average temperature is 6°C (43°F). The maximum can reach 25°C (77°F), and the minimum can be as low as -10°C (15°F). Be prepared for a wide range of temperatures while exploring Ramona this month!

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

The chart illustrates December temperature patterns in Ramona, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ramona, December typically has an average temperature of 6°C (43°F), with highs reaching up to 25°C (77°F) and lows dropping to around -10°C (15°F).
JanFebMarAprMayJunJulAugSepOctNovDec384052596979828076614943
Data source: Temperature data for Ramona 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 Ramona

In Ramona in December, the precipitation amount is 39 mm (1.5 in) spread over a duration of 5 days.

December Precipitation Trends in Ramona

The chart displays monthly precipitation patterns in Ramona, 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 Ramona, December typically receives around 39 mm (1.5 inches) of precipitation spread over approximately 5 days.
JanFebMarAprMayJunJulAugSepOctNovDec695611712020710188112911344439
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Ramona

In Ramona in December, humidity is 85%. With an average temperature of 6°C (43°F), this humidity feels like a damp chill that seeps into your bones, making travel feel more uncomfortable and limiting your enjoyment of the sights as you navigate the wet, brisk air.

December Average Humidity in Ramona

This chart illustrates the average monthly humidity levels in Ramona, 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 Ramona is approximately 85%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec77%76%71%74%83%83%81%73%67%72%82%85%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Ramona

In Ramona in December, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in Ramona, you can check the information here.

Maximum UV Index Levels in Ramona for December

The chart shows the monthly maximum UV Index (UVI) for Ramona 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 Ramona typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec36710101111109753
Data source: Ramona 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 Ramona Compares to Other Months

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

This table compares monthly weather conditions in Ramona, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather3°C (38°F)69 mm (2.7 inches)77%moderate
February Weather4°C (40°F)56 mm (2.2 inches)76%high
March Weather11°C (53°F)117 mm (4.6 inches)71%high
April Weather15°C (59°F)120 mm (4.7 inches)73%very high
May Weather21°C (69°F)207 mm (8.1 inches)83%very high
June Weather26°C (79°F)101 mm (4.0 inches)83%extreme
July Weather28°C (83°F)88 mm (3.5 inches)81%extreme
August Weather27°C (80°F)112 mm (4.4 inches)73%very high
September Weather24°C (76°F)91 mm (3.6 inches)67%very high
October Weather16°C (62°F)134 mm (5.3 inches)72%high
November Weather10°C (49°F)44 mm (1.7 inches)82%moderate
December Weather6°C (43°F)39 mm (1.5 inches)85%moderate

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