Sedro-Woolley Weather in September

September is one of the excellent months to visit Sedro-Woolley, with daytime temperatures of 21°C (70°F) and lows of 10°C (50°F) at night. Do note that quite a bit of rainfall is typical, averaging around 84 mm (3.3 in).

Rainfall in Sedro-Woolley in September

Records from the past 30 years suggest around 12 days of rain, with 84 mm (3.3 in) average for the month. Neither particularly heavy nor particularly frequent, the rain this month is about average. A light jacket should be enough on most wet days.

Temperature in Sedro-Woolley in September

The excellent temperature in Sedro-Woolley in September makes it a solid month to visit, with 21°C (70°F) during the day and 10°C (50°F) at night. During September, the summer season is in full swing. The difference between afternoon and evening temperatures is usually noticeable. Nights fall to 10°C (50°F), which is cold enough to feel it indoors too. A good thick duvet makes all the difference for a comfortable night's sleep.

Sunshine in Sedro-Woolley in September

The month experiences a moderate amount of sunlight, with 188 hours of sunshine. This provides a nice balance between sunshine and clouds.

If you're a fan of comfortable temperatures and drier conditions, September is a great time to visit.

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For a detailed overview over the year and the best time to visit the United States of America, check out our Sedro-Woolley's climate page.

Sedro-Woolley Temperature in September

Min Temperature 10°C (50°F)  

Max Temperature 21°C (70°F)  

Chance of Rain 41%  

Precipitation 84 mm (3.3 in)  

Rainy days 12 days  

Sunshine 188 hours *  

Percentage Sunshine *  

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

What to Wear in Sedro-Woolley in September

Comfortable temperatures call for an easy wardrobe in September. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. Expect heavy rainfall, so bring good rain protection and waterproof bags. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.

What To Do in Sedro-Woolley in September

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

6/10

Cycling

9/10

Walking

9/10

Camping

4/10

Outdoor sports

9/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our Sedro-Woolley's climate page.

More climate data for Sedro-Woolley

Temperature Rainfall Sunshine

See the full Sedro-Woolley climate overview or explore weather in the United States of America.