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April Weather in Bellevue, United States

Last updated: June 24, 2025

In April, the average temperature in Bellevue, United States hovers around 9°C (48°F). Expect a chilling minimum of -8°C (17°F) and a cozy maximum of 27°C (81°F). With a precipitation amount of 91 mm (3.6 in) over 11 days, prepare for some wet weather, while the average humidity sits at a notable 83%.

April Temperature in Bellevue

In April in Bellevue, the average temperature is 9°C (48°F). The maximum can reach 27°C (81°F), while the minimum can dip as low as -8°C (17°F). Be prepared for a wide range of temperatures, making it essential to pack both warm and cool clothing for your trip.

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

The chart illustrates April 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, April typically has an average temperature of 9°C (48°F), with highs reaching up to 27°C (81°F) and lows dropping to around -8°C (17°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.

April Precipitation in Bellevue

In Bellevue in April, the precipitation amount is 91 mm (3.6 in) over a period of 11 days.

April Precipitation Trends in Bellevue

The chart displays monthly precipitation patterns in Bellevue, with values for each month alongside April’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how April’s conditions compare to those of other months. In Bellevue, April typically receives around 91 mm (3.6 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec52596991150129781031161154745
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Bellevue

In Bellevue in April humidity is 83%. With an average temperature of 9°C (48°F), this humidity feels like an enveloping blanket, making outdoor activities quite uncomfortable and encouraging travelers to seek shelter or shade frequently.

April Average Humidity in Bellevue

This chart illustrates the average monthly humidity levels in Bellevue, with April’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In April, average humidity in Bellevue is approximately 83%, 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 April generated using information from the Copernicus Climate Change Service.

April UV Index in Bellevue

In Bellevue in April, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Bellevue.

Maximum UV Index Levels in Bellevue for April

The chart shows the monthly maximum UV Index (UVI) for Bellevue in April, 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 April, the maximum UV index in Bellevue typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec34689101098532
Data source: Bellevue April 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 April 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 April’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 April’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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