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December Weather in Redmond, United States

Last updated: June 24, 2025

In Redmond, United States, the average temperature in December hovers around 2°C (35°F), with extremes ranging from a chilly -18°C (-1°F) to a mild 19°C (67°F). Visitors should be prepared for 66 mm (2.6 in) of precipitation over 12 days, contributing to an average humidity of a damp 88%.

December Temperature in Redmond

In December in Redmond, the average temperature is 2°C (35°F). Maximums can reach 19°C (67°F), while minimums can be as low as -18°C (-1°F). Be prepared for a wide range of temperatures when traveling to Redmond in December.

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

The chart illustrates December temperature patterns in Redmond, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Redmond, December typically has an average temperature of 2°C (35°F), with highs reaching up to 19°C (67°F) and lows dropping to around -18°C (-1°F).
JanFebMarAprMayJunJulAugSepOctNovDec353641485664737262494135
Data source: Temperature data for Redmond 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 Redmond

In Redmond in December, the precipitation amount is 66 mm (2.6 in) over the course of 12 days.

December Precipitation Trends in Redmond

The chart displays monthly precipitation patterns in Redmond, 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 Redmond, December typically receives around 66 mm (2.6 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec6478485028154625355466
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Redmond

In Redmond in December, humidity is 88%. With an average temperature of 2°C (35°F), this humidity feels like you're wrapped in a cold, damp blanket, making outdoor activities uncomfortable and travel challenging due to the chill seeping into your bones.

December Average Humidity in Redmond

This chart illustrates the average monthly humidity levels in Redmond, 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 Redmond is approximately 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%87%86%85%80%82%79%63%59%78%88%88%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Redmond

In Redmond 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 Redmond, you can visit Hourly UV Index in Redmond.

Maximum UV Index Levels in Redmond for December

The chart shows the monthly maximum UV Index (UVI) for Redmond 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 Redmond typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec346810101098632
Data source: Redmond 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 Redmond Compares to Other Months

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

This table compares monthly weather conditions in Redmond, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather1°C (35°F)64 mm (2.5 inches)86%moderate
February Weather2°C (36°F)78 mm (3.1 inches)87%moderate
March Weather5°C (41°F)48 mm (1.9 inches)86%high
April Weather9°C (48°F)50 mm (2.0 inches)85%very high
May Weather13°C (56°F)28 mm (1.1 inches)80%very high
June Weather18°C (65°F)15 mm (0.6 inches)82%very high
July Weather23°C (73°F)4 mm (0.1 inches)78%very high
August Weather22°C (72°F)6 mm (0.2 inches)62%very high
September Weather17°C (62°F)25 mm (1.0 inches)59%very high
October Weather10°C (49°F)34 mm (1.4 inches)78%high
November Weather5°C (41°F)54 mm (2.1 inches)88%moderate
December Weather2°C (35°F)66 mm (2.6 inches)88%low

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