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October Weather in Bellevue, United States

Last updated: June 24, 2025

In October, the average temperature in Bellevue, United States is a mild 11°C (52°F), with minima dipping to -5°C (23°F) and maxima soaring to 30°C (87°F). Expect 115 mm (4.5 in) of precipitation spread over about 12 days, contributing to an average humidity of 79%. Embrace the variety this month has to offer!

October Temperature in Bellevue

In October in Bellevue, the average temperature is 11°C (52°F). The maximum can reach 30°C (87°F), while the minimum can dip as low as -5°C (23°F). Travelers should be prepared for a wide range of temperatures and pack accordingly.

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 11°C (52°F), with highs reaching up to 30°C (87°F) and lows dropping to around -5°C (23°F).
JanFebMarAprMayJunJulAugSepOctNovDec222438476172767266523730
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 total precipitation amount is 115 mm (4.5 in) over a span of 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 115 mm (4.5 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec52596991150129781031161154745
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 79%. With an average temperature of 11°C (52°F), this humidity feels like a damp chill that seeps through your clothes, making prolonged outdoor activities uncomfortable for travelers.

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 79%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%85%84%83%75%79%75%69%74%79%88%82%
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.
JanFebMarAprMayJunJulAugSepOctNovDec34689101098532
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 (22°F)52 mm (2.1 inches)84%moderate
February Weather-5°C (24°F)59 mm (2.3 inches)85%moderate
March Weather3°C (38°F)69 mm (2.7 inches)84%high
April Weather9°C (48°F)91 mm (3.6 inches)83%very high
May Weather16°C (61°F)150 mm (5.9 inches)75%very high
June Weather22°C (72°F)129 mm (5.1 inches)79%very high
July Weather24°C (76°F)78 mm (3.1 inches)75%very high
August Weather22°C (72°F)103 mm (4.0 inches)69%very high
September Weather19°C (67°F)116 mm (4.6 inches)74%very high
October Weather11°C (52°F)115 mm (4.5 inches)79%moderate
November Weather3°C (37°F)47 mm (1.8 inches)88%moderate
December Weather-1°C (31°F)45 mm (1.8 inches)82%low

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