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December Weather in Spring Valley, United States

Last updated: June 24, 2025

In Spring Valley, United States, the average temperature in December is a mild 14°C (58°F). Temperatures can fluctuate, with a minimum of -2°C (29°F) and climbing to a comfortable maximum of 29°C (84°F). During this month, expect about 108 mm (4.2 in) of precipitation spread over 9 days, and the average humidity hovers around a balmy 84%.

December Temperature in Spring Valley

In December in Spring Valley, the average temperature is 14°C (58°F), with maximums reaching 29°C (84°F) and minimums dropping as low as -2°C (29°F). This variability makes it essential for travelers to pack layers to comfortably enjoy a range of outdoor activities.

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 14°C (58°F), with highs reaching up to 29°C (84°F) and lows dropping to around -2°C (29°F).
JanFebMarAprMayJunJulAugSepOctNovDec555866707782848480726258
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 108 mm (4.2 in) spread over 9 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 108 mm (4.2 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec889278871711651331821759778108
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 84%. With an average temperature of 14°C (58°F), this humidity feels like a heavy blanket enveloping you, making every step feel sluggish and damp, which can be uncomfortable for traveling.

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 84%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec78%81%76%79%79%74%72%68%73%75%78%84%
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 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Spring Valley.

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 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec589111112111110965
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 Weather13°C (55°F)88 mm (3.5 inches)78%moderate
February Weather14°C (58°F)92 mm (3.6 inches)81%very high
March Weather19°C (66°F)78 mm (3.1 inches)76%very high
April Weather21°C (70°F)87 mm (3.4 inches)79%extreme
May Weather25°C (78°F)171 mm (6.7 inches)79%extreme
June Weather28°C (82°F)165 mm (6.5 inches)74%extreme
July Weather29°C (84°F)133 mm (5.2 inches)71%extreme
August Weather29°C (84°F)182 mm (7.2 inches)68%extreme
September Weather27°C (80°F)175 mm (6.9 inches)73%very high
October Weather22°C (72°F)97 mm (3.8 inches)75%very high
November Weather17°C (63°F)78 mm (3.1 inches)78%high
December Weather14°C (58°F)108 mm (4.2 inches)84%moderate

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