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January Weather in Bellevue, United States

Last updated: June 24, 2025

In January, the average temperature in Bellevue, United States hovers around -1°C (30°F). Expect chilly conditions, with minimums dipping to -21°C (-6°F) and rare peaks reaching 17°C (63°F). During this month, the region receives an average precipitation of 76 mm (3.0 in) over 10 days, accompanied by an average humidity of 88%. Remember to bundle up for the chilly and wet days ahead!

January Temperature in Bellevue

In January in Bellevue, the average temperature is -1°C (30°F), with maximums reaching 17°C (63°F) and minimums plummeting to as low as -21°C (-6°F). It’s essential to pack layers and be prepared for varying weather conditions while traveling.

January Weather in Bellevue: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Bellevue, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Bellevue, January typically has an average temperature of -1°C (30°F), with highs reaching up to 17°C (63°F) and lows dropping to around -21°C (-6°F).
JanFebMarAprMayJunJulAugSepOctNovDec293239496170757368574235
Data source: Temperature data for Bellevue 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.

January Precipitation in Bellevue

In Bellevue in January, the total precipitation amount is 76 mm (3.0 in) spread over a period of 10 days.

January Precipitation Trends in Bellevue

The chart displays monthly precipitation patterns in Bellevue, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In Bellevue, January typically receives around 76 mm (3.0 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec7688921111251191248375989476
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in Bellevue

In Bellevue in January humidity is 88%. With an average temperature of -1°C (30°F), this humidity feels like a biting chill that penetrates through your layers, making travel uncomfortable as every gust of wind becomes a sharp reminder of the cold and damp air surrounding you.

January Average Humidity in Bellevue

This chart illustrates the average monthly humidity levels in Bellevue, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in Bellevue is approximately 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%87%87%88%81%82%81%78%78%82%89%86%
Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Bellevue

In Bellevue in January, 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 Bellevue, you can check the information here.

Maximum UV Index Levels in Bellevue for January

The chart shows the monthly maximum UV Index (UVI) for Bellevue in January, 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 January, the maximum UV index in Bellevue typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356910101098642
Data source: Bellevue January 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 January Weather in Bellevue Compares to Other Months

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

This table compares monthly weather conditions in Bellevue, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (30°F)76 mm (3.0 inches)88%moderate
February Weather0°C (32°F)87 mm (3.4 inches)87%moderate
March Weather4°C (40°F)92 mm (3.6 inches)87%high
April Weather10°C (49°F)111 mm (4.4 inches)87%very high
May Weather16°C (61°F)125 mm (4.9 inches)81%very high
June Weather21°C (71°F)119 mm (4.7 inches)82%very high
July Weather24°C (75°F)124 mm (4.9 inches)81%very high
August Weather23°C (73°F)83 mm (3.3 inches)78%very high
September Weather20°C (68°F)75 mm (2.9 inches)78%very high
October Weather14°C (57°F)98 mm (3.9 inches)82%high
November Weather5°C (42°F)93 mm (3.7 inches)89%moderate
December Weather2°C (35°F)76 mm (3.0 inches)86%low

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