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April Weather in Sedro-Woolley, United States

Last updated: June 24, 2025

In April, the average temperature in Sedro-Woolley, United States hovers around 8°C (47°F). However, you may experience a range from a chilly -2°C (28°F) to a pleasant 21°C (71°F). Expect about 146 mm (5.8 in) of precipitation spread over 17 days, with humidity levels reaching an average of 86%. Prepare your wardrobe accordingly and enjoy the dynamic weather!

April Temperature in Sedro-Woolley

In April in Sedro-Woolley, the average temperature is 8°C (47°F). The maximum can reach 21°C (71°F), while the minimum can be as low as -2°C (28°F). Be prepared for a mix of mild and chilly weather, making it essential to pack layers for your travels.

April Weather in Sedro-Woolley: Daily Temperature Highs, Lows, and Averages

The chart illustrates April temperature patterns in Sedro-Woolley, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sedro-Woolley, April typically has an average temperature of 8°C (47°F), with highs reaching up to 21°C (71°F) and lows dropping to around -2°C (28°F).
JanFebMarAprMayJunJulAugSepOctNovDec383641475459636459494338
Data source: Temperature data for Sedro-Woolley 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 Sedro-Woolley

In Sedro-Woolley in April, the total precipitation amount is 146 mm (5.8 in) distributed over 17 days.

April Precipitation Trends in Sedro-Woolley

The chart displays monthly precipitation patterns in Sedro-Woolley, 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 Sedro-Woolley, April typically receives around 146 mm (5.8 inches) of precipitation spread over approximately 17 days.
JanFebMarAprMayJunJulAugSepOctNovDec23624419114683753126146229313271
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Sedro-Woolley

In Sedro-Woolley in April, humidity is 86%. With an average temperature of 8°C (47°F), this humidity feels like a chilling damp that penetrates your clothes, making outdoor adventures less enjoyable and encouraging you to seek warmth indoors rather than explore the sights.

April Average Humidity in Sedro-Woolley

This chart illustrates the average monthly humidity levels in Sedro-Woolley, 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 Sedro-Woolley is approximately 86%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%86%88%86%82%82%85%77%76%88%88%89%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Sedro-Woolley

In Sedro-Woolley in April, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Sedro-Woolley, you can refer to this Hourly UV Index in Sedro-Woolley.

Maximum UV Index Levels in Sedro-Woolley for April

The chart shows the monthly maximum UV Index (UVI) for Sedro-Woolley 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 Sedro-Woolley typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235689987522
Data source: Sedro-Woolley 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 Sedro-Woolley Compares to Other Months

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

This table compares monthly weather conditions in Sedro-Woolley, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather3°C (38°F)236 mm (9.3 inches)87%low
February Weather2°C (36°F)244 mm (9.6 inches)86%moderate
March Weather5°C (42°F)191 mm (7.5 inches)88%moderate
April Weather8°C (47°F)146 mm (5.8 inches)86%high
May Weather12°C (54°F)82 mm (3.2 inches)82%very high
June Weather15°C (59°F)75 mm (3.0 inches)82%very high
July Weather17°C (63°F)31 mm (1.2 inches)85%very high
August Weather18°C (64°F)26 mm (1.0 inches)77%very high
September Weather15°C (59°F)146 mm (5.8 inches)76%high
October Weather9°C (49°F)229 mm (9.0 inches)88%moderate
November Weather6°C (43°F)312 mm (12.3 inches)88%low
December Weather3°C (38°F)271 mm (10.7 inches)89%low

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