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December Weather in Weiser, United States

Last updated: June 24, 2025

In December, the average temperature in Weiser, United States hovers around 0°C (33°F). Expect chilly conditions with minimums dipping to -13°C (9°F) and maximums reaching 12°C (54°F). Be prepared for wet weather, as the area receives about 35 mm (1.4 in) of precipitation over 10 days. With an average humidity of 89%, it’s advisable to dress warmly and stay dry during your visit!

December Temperature in Weiser

In December in Weiser, the average temperature is 0°C (33°F). The maximum can reach 12°C (54°F) and the minimum can be as low as -13°C (9°F). Be prepared for chilly weather and pack warm clothing if you plan to travel during this time.

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

The chart illustrates December temperature patterns in Weiser, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Weiser, December typically has an average temperature of 0°C (33°F), with highs reaching up to 12°C (54°F) and lows dropping to around -13°C (9°F).
JanFebMarAprMayJunJulAugSepOctNovDec303344516170827968524132
Data source: Temperature data for Weiser 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 Weiser

In Weiser in December, the precipitation amount is 35 mm (1.4 in) spread over a period of 10 days.

December Precipitation Trends in Weiser

The chart displays monthly precipitation patterns in Weiser, 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 Weiser, December typically receives around 35 mm (1.4 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec4455342530191611212935
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Weiser

In Weiser in December humidity is 89%. With an average temperature of 0°C (33°F), this humidity feels like a heavy, damp blanket that clings to your skin, making travel uncomfortable and every breath seem colder and more constricted.

December Average Humidity in Weiser

This chart illustrates the average monthly humidity levels in Weiser, 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 Weiser is approximately 89%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec90%91%88%84%77%78%78%63%60%77%86%90%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Weiser

In Weiser in December, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in Weiser, you can visit Hourly UV Index in Weiser.

Maximum UV Index Levels in Weiser for December

The chart shows the monthly maximum UV Index (UVI) for Weiser 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 Weiser typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356891110108542
Data source: Weiser 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 Weiser Compares to Other Months

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

This table compares monthly weather conditions in Weiser, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (30°F)44 mm (1.7 inches)90%moderate
February Weather1°C (33°F)55 mm (2.1 inches)91%moderate
March Weather7°C (44°F)34 mm (1.3 inches)88%high
April Weather11°C (52°F)25 mm (1.0 inches)84%very high
May Weather16°C (61°F)30 mm (1.2 inches)77%very high
June Weather21°C (71°F)19 mm (0.8 inches)78%extreme
July Weather28°C (82°F)1 mm (0.0 inches)77%very high
August Weather26°C (80°F)6 mm (0.2 inches)63%very high
September Weather20°C (68°F)11 mm (0.4 inches)60%very high
October Weather11°C (52°F)21 mm (0.8 inches)77%moderate
November Weather5°C (41°F)29 mm (1.1 inches)86%moderate
December Weather0°C (33°F)35 mm (1.4 inches)89%low

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