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December Weather in Geronimo, United States

Last updated: June 24, 2025

In Geronimo, United States, the average temperature in December hovers around 8°C (46°F). However, be prepared for a range: temperatures can dip to a chilly -8°C (18°F) and occasionally soar to a warm 30°C (86°F). Expect about 38 mm (1.5 in) of precipitation spread over 3 days, and with an average humidity of 84%, the air can feel quite moist.

December Temperature in Geronimo

In December in Geronimo, the average temperature is 8°C (46°F). Maximums can reach 30°C (86°F), while minimums can drop as low as -8°C (18°F). Be prepared for a range of weather conditions when traveling during this time.

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

The chart illustrates December temperature patterns in Geronimo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Geronimo, December typically has an average temperature of 8°C (46°F), with highs reaching up to 30°C (86°F) and lows dropping to around -8°C (18°F).
JanFebMarAprMayJunJulAugSepOctNovDec414356627281858377645246
Data source: Temperature data for Geronimo 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 Geronimo

In Geronimo in December, the total precipitation amount is 38 mm (1.5 in) spread over a duration of 3 days.

December Precipitation Trends in Geronimo

The chart displays monthly precipitation patterns in Geronimo, 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 Geronimo, December typically receives around 38 mm (1.5 inches) of precipitation spread over approximately 3 days.
JanFebMarAprMayJunJulAugSepOctNovDec39408211114052314984842538
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Geronimo

In Geronimo in December humidity is 84%. With an average temperature of 8°C (46°F), this humidity feels like a chilly mist wrapping around you, making outdoor exploration cumbersome and layering your clothing a necessity for comfort.

December Average Humidity in Geronimo

This chart illustrates the average monthly humidity levels in Geronimo, 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 Geronimo is approximately 84%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec76%76%70%72%82%82%80%72%64%71%81%84%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Geronimo

In Geronimo 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 Geronimo for better planning.

Maximum UV Index Levels in Geronimo for December

The chart shows the monthly maximum UV Index (UVI) for Geronimo 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 Geronimo typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec468101111111110854
Data source: Geronimo 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 Geronimo Compares to Other Months

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

This table compares monthly weather conditions in Geronimo, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (42°F)39 mm (1.5 inches)76%moderate
February Weather6°C (43°F)40 mm (1.6 inches)76%high
March Weather13°C (56°F)82 mm (3.2 inches)70%very high
April Weather17°C (62°F)111 mm (4.4 inches)72%very high
May Weather22°C (72°F)140 mm (5.5 inches)82%extreme
June Weather27°C (81°F)52 mm (2.0 inches)82%extreme
July Weather29°C (85°F)31 mm (1.2 inches)80%extreme
August Weather29°C (84°F)49 mm (1.9 inches)72%extreme
September Weather25°C (77°F)84 mm (3.3 inches)64%very high
October Weather18°C (64°F)84 mm (3.3 inches)71%very high
November Weather11°C (52°F)25 mm (1.0 inches)81%moderate
December Weather8°C (46°F)38 mm (1.5 inches)84%moderate

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