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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 -4°C (25°F), with extremes ranging from a chilling -31°C (-24°F) to a mild 14°C (57°F). Expect 33 mm (1.3 in) of precipitation over 5 days, accompanied by a relatively high average humidity of 76%.

January Temperature in Bellevue

In January in Bellevue, the average temperature is -4°C (25°F), with maximums reaching 14°C (57°F) and minimums dropping as low as -31°C (-24°F). Travelers should be prepared for a wide range of temperatures and pack accordingly for their visit.

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 -4°C (25°F), with highs reaching up to 14°C (57°F) and lows dropping to around -31°C (-24°F).
JanFebMarAprMayJunJulAugSepOctNovDec252541506376787569534031
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 precipitation amount is 33 mm (1.3 in) over the course of 5 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 33 mm (1.3 inches) of precipitation spread over approximately 5 days.
JanFebMarAprMayJunJulAugSepOctNovDec3332975715213375103841263138
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 76%. With an average temperature of -4°C (25°F), this humidity feels like a chilling mist that clings to your skin, making every breath feel heavy and damp, which can be quite uncomfortable for traveling.

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 76%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec76%80%73%75%78%82%83%81%75%75%82%83%
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.
JanFebMarAprMayJunJulAugSepOctNovDec356810101098642
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-4°C (25°F)33 mm (1.3 inches)76%moderate
February Weather-4°C (26°F)32 mm (1.3 inches)80%moderate
March Weather5°C (41°F)97 mm (3.8 inches)73%high
April Weather10°C (50°F)57 mm (2.2 inches)74%very high
May Weather17°C (63°F)152 mm (6.0 inches)78%very high
June Weather24°C (76°F)133 mm (5.2 inches)82%very high
July Weather25°C (78°F)75 mm (2.9 inches)83%very high
August Weather24°C (75°F)103 mm (4.1 inches)80%very high
September Weather21°C (70°F)84 mm (3.3 inches)75%very high
October Weather11°C (53°F)126 mm (4.9 inches)75%high
November Weather4°C (40°F)31 mm (1.2 inches)82%moderate
December Weather0°C (31°F)38 mm (1.5 inches)83%low

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