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December Weather in Wasco, United States

Last updated: June 24, 2025

In December, the average temperature in Wasco, United States hovers around 11°C (52°F), offering a mild climate. You can expect temperatures to range from a chilly 0°C (31°F) to a warm 24°C (75°F). During this period, precipitation amounts to roughly 41 mm (1.6 in) over about 7 days, contributing to an average humidity level of 76%.

December Temperature in Wasco

In December in Wasco, the average temperature is 11°C (52°F). The maximum can reach 24°C (75°F), and the minimum can be as low as 0°C (31°F). This makes it an ideal time for travelers to enjoy a mix of pleasant days and cooler evenings while exploring the area's attractions.

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

The chart illustrates December temperature patterns in Wasco, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Wasco, December typically has an average temperature of 11°C (52°F), with highs reaching up to 24°C (75°F) and lows dropping to around 0°C (31°F).
JanFebMarAprMayJunJulAugSepOctNovDec525459667382888780695952
Data source: Temperature data for Wasco 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 Wasco

In Wasco in December, the precipitation amount is 41 mm (1.6 in) spread over a duration of 7 days.

December Precipitation Trends in Wasco

The chart displays monthly precipitation patterns in Wasco, 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 Wasco, December typically receives around 41 mm (1.6 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec4044512414100171841
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Wasco

In Wasco in December, humidity is 76%. With an average temperature of 11°C (52°F), this humidity feels like a damp chill that can make outdoor exploration feel uncomfortable and heavy, often leaving travelers longing for a warm café to escape the cool, moist air.

December Average Humidity in Wasco

This chart illustrates the average monthly humidity levels in Wasco, 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 Wasco is approximately 76%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec78%82%76%68%58%52%46%39%48%59%72%76%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Wasco

In Wasco 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 Wasco, you can check the information here.

Maximum UV Index Levels in Wasco for December

The chart shows the monthly maximum UV Index (UVI) for Wasco 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 Wasco typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec4589101111119753
Data source: Wasco 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 Wasco Compares to Other Months

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

This table compares monthly weather conditions in Wasco, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather11°C (52°F)40 mm (1.6 inches)78%moderate
February Weather12°C (55°F)44 mm (1.7 inches)82%moderate
March Weather15°C (59°F)51 mm (2.0 inches)75%very high
April Weather19°C (67°F)24 mm (1.0 inches)68%very high
May Weather23°C (73°F)14 mm (0.5 inches)57%very high
June Weather28°C (83°F)1 mm (0.0 inches)52%extreme
July Weather31°C (89°F)0 mm (0.0 inches)46%extreme
August Weather31°C (87°F)0 mm (0.0 inches)39%extreme
September Weather27°C (81°F)1 mm (0.0 inches)48%very high
October Weather21°C (70°F)7 mm (0.3 inches)59%high
November Weather15°C (59°F)18 mm (0.7 inches)72%moderate
December Weather11°C (52°F)41 mm (1.6 inches)76%moderate

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