ClimateForecastNovemberDecember >>

Friday Harbor (WA) Climate by Month

The temperature in Friday Harbor can vary greatly throughout the year. The temperatures shift from pleasant to cold. It receives a reasonable amount of rain/snowfall. Let’s explore the climate details in depth to provide you with a complete overview.

Average day and night temperature

Depending on the time of the year, temperatures range from pleasant to chilly in Friday Harbor. Average daytime temperatures reach a pleasant 21°C in August. In December, the coolest month of the year, temperatures drop to a chilly 8°C. At night, expect cooler temperatures, averaging 3°C during this month.

The mean minimum and maximum temperatures throughout the year

Precipitation and rainy days

Generally, Friday Harbor has a moderate amount of precipitation, averaging 671 mm of rain/snowfall annually. Friday Harbor can be quite wet during November, receiving approximately 108 mm of precipitation over 19 rainy days. In contrast July, experiences much drier conditions, with 14 mm of rainfall, spread across 5 rainy days.

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

Sunshine over the year

Friday Harbor can be enjoyed more throughout the sunniest month of July under a blue sky, with approximately 11.0 hours of sunshine daily. In contrast, the city experiences much darker days in December, with only 2.3 hours of sunlight per day.

Monthly hours of sunshine

Daily hours of sunshine

The best time of year to visit Friday Harbor in the United States of America

During the months of July and August 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:
  • Does Friday Harbor have a dry season?
    Yes, the months of July and August are very dry.
  • Which is the warmest month in Friday Harbor?
    August has an average maximum temperature of 21°C and is the warmest month of the year.
  • Which is the coldest month in Friday Harbor?
    The coldest month is December with an average maximum temperature of 8°C.
  • Which is the wettest month in Friday Harbor?
    November tops the wettest month list with 108 mm of rainfall.
  • Which is the driest month in Friday Harbor?
    July is the driest month with 14 mm of precipitation.
  • Which is the sunniest month in Friday Harbor?
    July is the sunniest month with an average of 331 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 Friday Harbor (WA)

    Sat   Nov 23
    12°C | 8°C
    SE 14 km/h
    partly cloudy and no rain

    partly cloudy and no rain

    Sun   Nov 24
    11°C | 7°C
    E 22 km/h
    4.4 mm
    overcast and rain

    overcast and rain

    Mon   Nov 25
    10°C | 6°C
    N 14 km/h
    overcast and no rain

    overcast and no rain