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Sedro-Woolley (WA) Climate by Month

The temperature in Sedro-Woolley can vary quite a bit throughout the year. Temperatures can be warm during the warmest months, and cold during the cooler months. It also has a notably wet climate with much precipitation. Now, let’s explore all the climate details to give you a full picture.

Average day and night temperature

Visitors to Sedro-Woolley can expect significant temperature changes throughout the year. Average daytime temperatures range from a comfortable 24°C in July, the warmest time of the year, to a chilly 7°C during cooler months like December. At night, temperatures typically average around 1°C during these months.

The mean minimum and maximum temperatures throughout the year

Precipitation and rainy days

Sedro-Woolley is known for its substantial rain/snowfall, with annual precipitation reaching 1331 mm. Significant seasonal changes in precipitation occur throughout the year. During the wetter season, November receives heavy rainfall, averaging 205 mm of precipitation, recorded across 22 rainy days. In contrast, the drier season, July brings less rainfall, with 26 mm over 7 rainy days.

The mean monthly precipitation over the year, including rain, hail and snow

Sunshine over the year

Seasonal changes in sunshine hours are quite dramatic in Sedro-Woolley. While July receives considerable daily sunshine with up to 9.4 hours, November marks the darkest time of the year, where sunshine is scarce with only 2.0 hours of sunlight per day.

Monthly hours of sunshine

Data from: Bellingham, the United States of America (33 KM, 20 Miles).

Daily hours of sunshine

Data from: Bellingham, the United States of America (33 KM, 20 Miles).

The best time of year to visit Sedro-Woolley in the United States of America

During the months of June, July, August and September you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.

Other facts from our historical weather data:
  • Which months have the greatest rainfall in Sedro-Woolley?
    Most rainfall (rainy season) is seen in January, March and November.
  • Which is the warmest month in Sedro-Woolley?
    July has an average maximum temperature of 24°C and is the warmest month of the year.
  • Which is the coldest month in Sedro-Woolley?
    The coldest month is December with an average maximum temperature of 7°C.
  • Which is the wettest month in Sedro-Woolley?
    November tops the wettest month list with 205 mm of rainfall.
  • Which is the driest month in Sedro-Woolley?
    July is the driest month with 26 mm of precipitation.
  • Which is the sunniest month in Sedro-Woolley?
    July is the sunniest month with an average of 281 hours of sunshine.

  • No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.

    Forecast for Sedro-Woolley (WA)

    Sat   Nov 23
    11°C | 6°C
    SE 18 km/h
    partly cloudy and no rain

    partly cloudy and no rain

    Sun   Nov 24
    8°C | 5°C
    NE 11 km/h
    8.9 mm
    overcast and rain

    overcast and rain

    Mon   Nov 25
    10°C | 4°C
    NE 11 km/h
    5.7 mm
    broken clouds and  chance of rain

    broken clouds and chance of rain