Yosemite National Park is definitely worth a visit
Vast forests, blue lakes, towering sequoias, and majestic waterfalls hint at the beauty of Yosemite National Park—a true natural masterpiece.
Friday Harbor Weather in September
September in Friday Harbor brings pleasant temperatures, with highs of 18°C (64°F) and nights dropping to 9°C (48°F). Expect some rainfall, with around 41 mm (1.6 in) typical for the month.
Rainfall in Friday Harbor in September
Historically, the month has about 10 days of rain, averaging 41 mm (1.6 in) in total. The rainfall pattern this month is fairly balanced. Showers tend to be moderate rather than extreme.
Temperature in Friday Harbor in September
In September, expect pleasant temperatures in Friday Harbor, with highs of 18°C (64°F) and lows of 9°C (48°F) at night. September marks the summer season. Temperatures can feel cooler in the morning and evening, so layering is often the best approach. With lows around 9°C (48°F), nights are cold. The upside is that cool, crisp nights are often the best for a deep sleep.
Sunshine in Friday Harbor in September
Expect sunny days throughout the month, with an estimated 202 hours of sunshine. This makes it a pleasant time to visit Friday Harbor.If your ideal day consists of dry skies and pleasant temperatures, June, July and August typically offer the best circumstances for Friday Harbor.
Friday Harbor Temperature in September
Min Temperature
9°C (48°F)
Max Temperature
18°C (64°F)
Chance of Rain
35%
Precipitation
41 mm (1.6 in)
Rainy days
10 days
Sunshine
202 hours
Percentage Sunshine
55%
Friday Harbor Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Friday Harbor - and find the best time to visit.
Best Places in the United States of America in September
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in September →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Friday Harbor in September
For Friday Harbor in September, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. Rain is likely on several days, so bring a good rain jacket. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.
What To Do in Friday Harbor in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Cycling10/10 -
Walking10/10 -
Camping5/10 -
Outdoor sports10/10
Friday Harbor 3-Day Forecast
More climate data for Friday Harbor
See the full Friday Harbor climate overview or explore weather in the United States of America.
Popular in September
Where to go in September - average daytime high across popular destinations.
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Yosemite National Park is definitely worth a visit
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