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December Weather in Spring Valley, United States

Last updated: June 24, 2025

In December, the average temperature in Spring Valley, United States hovers around 8°C (46°F). Prepare for a range of conditions, as temperatures can dip to a brisk -6°C (22°F) or rise to a comfortable 22°C (73°F). Expect some rain, with precipitation totaling 36 mm (1.4 in) over approximately 5 days, and humidity levels averaging a steamy 82%. Stay ready for a mix of weather!

December Temperature in Spring Valley

In December in Spring Valley, the average temperature is 8°C (46°F). Maximum temperatures can reach 22°C (73°F), while minimum temperatures can drop to as low as -6°C (22°F). Pack accordingly to enjoy the mild days and prepare for the chilly nights during your travels.

December Weather in Spring Valley: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Spring Valley, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Spring Valley, December typically has an average temperature of 8°C (46°F), with highs reaching up to 22°C (73°F) and lows dropping to around -6°C (22°F).
JanFebMarAprMayJunJulAugSepOctNovDec454652616879818075635546
Data source: Temperature data for Spring Valley 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 Spring Valley

In Spring Valley in December, the precipitation amount is 36 mm (1.4 in) over the course of 5 days.

December Precipitation Trends in Spring Valley

The chart displays monthly precipitation patterns in Spring Valley, 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 Spring Valley, December typically receives around 36 mm (1.4 inches) of precipitation spread over approximately 5 days.
JanFebMarAprMayJunJulAugSepOctNovDec47555681261186238333336
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Spring Valley

In Spring Valley in December humidity is 82%. With an average temperature of 8°C (46°F), this humidity feels like a thick, damp blanket wrapping around you, making travel uncomfortable and creating a sense of heaviness in the air that can sap your energy quickly.

December Average Humidity in Spring Valley

This chart illustrates the average monthly humidity levels in Spring Valley, 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 Spring Valley is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec80%83%72%63%46%35%33%41%59%70%79%82%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Spring Valley

In Spring Valley 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 Spring Valley for better planning.

Maximum UV Index Levels in Spring Valley for December

The chart shows the monthly maximum UV Index (UVI) for Spring Valley 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 Spring Valley typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec479111212121110864
Data source: Spring Valley 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 Spring Valley Compares to Other Months

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

This table compares monthly weather conditions in Spring Valley, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather7°C (45°F)47 mm (1.8 inches)80%moderate
February Weather8°C (46°F)55 mm (2.2 inches)83%high
March Weather11°C (52°F)56 mm (2.2 inches)72%very high
April Weather16°C (61°F)8 mm (0.3 inches)63%extreme
May Weather20°C (68°F)12 mm (0.5 inches)46%extreme
June Weather26°C (79°F)5 mm (0.2 inches)35%extreme
July Weather27°C (81°F)118 mm (4.6 inches)33%extreme
August Weather26°C (80°F)62 mm (2.4 inches)41%extreme
September Weather24°C (75°F)38 mm (1.5 inches)59%very high
October Weather17°C (63°F)33 mm (1.3 inches)70%very high
November Weather13°C (55°F)33 mm (1.3 inches)79%high
December Weather8°C (46°F)36 mm (1.4 inches)82%moderate

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