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October Weather in Bellevue, United States

Last updated: June 24, 2025

In October, the average temperature in Bellevue, United States hovers around 10°C (50°F). Expect a range from a chilly -5°C (24°F) to a warm 28°C (83°F), making this period quite varied. With an average precipitation of 94 mm (3.7 in) spread over 12 days, and a notable 84% humidity, prepare for a moist atmosphere.

October Temperature in Bellevue

In October in Bellevue, the average temperature is 10°C (50°F), with maximums reaching up to 28°C (83°F) and minimums dropping as low as -5°C (24°F). This range makes it a great time for travelers to experience the diverse weather and enjoy various outdoor activities.

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

The chart illustrates October 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, October typically has an average temperature of 10°C (50°F), with highs reaching up to 28°C (83°F) and lows dropping to around -5°C (24°F).
JanFebMarAprMayJunJulAugSepOctNovDec212133435668737063503527
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.

October Precipitation in Bellevue

In Bellevue in October, the precipitation amount is 94 mm (3.7 in) spread over 12 days.

October Precipitation Trends in Bellevue

The chart displays monthly precipitation patterns in Bellevue, with values for each month alongside October’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how October’s conditions compare to those of other months. In Bellevue, October typically receives around 94 mm (3.7 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec4048599910610610810765944854
Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.
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October Humidity in Bellevue

In Bellevue in October, humidity is 84%. With an average temperature of 10°C (50°F), this humidity feels like a chilly dampness that clings to your skin, making outdoor activities less comfortable and prompting travelers to seek refuge in cozy, warm cafes or indoor attractions.

October Average Humidity in Bellevue

This chart illustrates the average monthly humidity levels in Bellevue, with October’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In October, average humidity in Bellevue is approximately 84%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec89%90%87%84%77%75%75%73%78%84%89%87%
Data source: Humidity data for October generated using information from the Copernicus Climate Change Service.

October UV Index in Bellevue

In Bellevue in October, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Bellevue.

Maximum UV Index Levels in Bellevue for October

The chart shows the monthly maximum UV Index (UVI) for Bellevue in October, 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 October, the maximum UV index in Bellevue typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2457910997532
Data source: Bellevue October 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 October 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 October’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 October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-6°C (21°F)40 mm (1.6 inches)89%low
February Weather-6°C (21°F)48 mm (1.9 inches)90%moderate
March Weather1°C (33°F)59 mm (2.3 inches)87%moderate
April Weather6°C (43°F)99 mm (3.9 inches)84%high
May Weather14°C (57°F)106 mm (4.2 inches)77%very high
June Weather20°C (68°F)106 mm (4.2 inches)75%very high
July Weather23°C (73°F)108 mm (4.2 inches)74%very high
August Weather21°C (70°F)107 mm (4.2 inches)73%very high
September Weather17°C (63°F)65 mm (2.5 inches)78%high
October Weather10°C (50°F)94 mm (3.7 inches)84%moderate
November Weather2°C (35°F)48 mm (1.9 inches)89%moderate
December Weather-3°C (27°F)54 mm (2.1 inches)87%low

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