Friday Harbor weather by month

Check out Friday Harbor weather averages by month. Compare detailed monthly climate statistics including temperature, rainfall and sunshine figures.

Temperature in Friday Harbor (°F)

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Max temperature (daytime)
45°F maximum daytime temperature in January in Friday Harbor45
46°F maximum daytime temperature in February in Friday Harbor46
50°F maximum daytime temperature in March in Friday Harbor50
55°F maximum daytime temperature in April in Friday Harbor55
61°F maximum daytime temperature in May in Friday Harbor61
66°F maximum daytime temperature in June in Friday Harbor66
70°F maximum daytime temperature in July in Friday Harbor70
70°F maximum daytime temperature in August in Friday Harbor70
64°F maximum daytime temperature in September in Friday Harbor64
57°F maximum daytime temperature in October in Friday Harbor57
48°F maximum daytime temperature in November in Friday Harbor48
45°F maximum daytime temperature in December in Friday Harbor45
Min temperature (night-time)
36°F minimum night-time temperature in January in Friday Harbor36
37°F minimum night-time temperature in February in Friday Harbor37
39°F minimum night-time temperature in March in Friday Harbor39
41°F minimum night-time temperature in April in Friday Harbor41
45°F minimum night-time temperature in May in Friday Harbor45
48°F minimum night-time temperature in June in Friday Harbor48
52°F minimum night-time temperature in July in Friday Harbor52
52°F minimum night-time temperature in August in Friday Harbor52
50°F minimum night-time temperature in September in Friday Harbor50
45°F minimum night-time temperature in October in Friday Harbor45
39°F minimum night-time temperature in November in Friday Harbor39
36°F minimum night-time temperature in December in Friday Harbor36
Heat & Humidity
No heat & humidity in January in Friday Harbor0
No heat & humidity in February in Friday Harbor0
No heat & humidity in March in Friday Harbor0
No heat & humidity in April in Friday Harbor0
No heat & humidity in May in Friday Harbor0
No heat & humidity in June in Friday Harbor0
No heat & humidity in July in Friday Harbor0
No heat & humidity in August in Friday Harbor0
No heat & humidity in September in Friday Harbor0
No heat & humidity in October in Friday Harbor0
No heat & humidity in November in Friday Harbor0
No heat & humidity in December in Friday Harbor0
Sea temperature
45°F sea temperature in January in Friday Harbor45
45°F sea temperature in February in Friday Harbor45
46°F sea temperature in March in Friday Harbor46
48°F sea temperature in April in Friday Harbor48
50°F sea temperature in May in Friday Harbor50
54°F sea temperature in June in Friday Harbor54
55°F sea temperature in July in Friday Harbor55
55°F sea temperature in August in Friday Harbor55
54°F sea temperature in September in Friday Harbor54
50°F sea temperature in October in Friday Harbor50
48°F sea temperature in November in Friday Harbor48
46°F sea temperature in December in Friday Harbor46

Note: 0 = None, L = Low, M = Moderate, H = High, VH = Very high, E = Extreme

Sunshine & Daylight in Friday Harbor

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Daily hours of sunshine
Daily hours of daylight
9 hours of daylight per day in January in Friday Harbor9
10 hours of daylight per day in February in Friday Harbor10
12 hours of daylight per day in March in Friday Harbor12
14 hours of daylight per day in April in Friday Harbor14
15 hours of daylight per day in May in Friday Harbor15
16 hours of daylight per day in June in Friday Harbor16
16 hours of daylight per day in July in Friday Harbor16
14 hours of daylight per day in August in Friday Harbor14
13 hours of daylight per day in September in Friday Harbor13
11 hours of daylight per day in October in Friday Harbor11
9 hours of daylight per day in November in Friday Harbor9
8 hours of daylight per day in December in Friday Harbor8
UV Index (Maximum)
UV (maximum) index 1 (Low) in January in Friday Harbor1
UV (maximum) index 1 (Low) in February in Friday Harbor1
UV (maximum) index 3 (Moderate) in March in Friday Harbor3
UV (maximum) index 4 (Moderate) in April in Friday Harbor4
UV (maximum) index 6 (High) in May in Friday Harbor6
UV (maximum) index 7 (High) in June in Friday Harbor7
UV (maximum) index 7 (High) in July in Friday Harbor7
UV (maximum) index 6 (High) in August in Friday Harbor6
UV (maximum) index 5 (Moderate) in September in Friday Harbor5
UV (maximum) index 2 (Low) in October in Friday Harbor2
UV (maximum) index 1 (Low) in November in Friday Harbor1
UV (maximum) index 1 (Low) in December in Friday Harbor1

Rainfall in Friday Harbor

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Number of days with some rain
18 days with some rainfall in January in Friday Harbor18
16 days with some rainfall in February in Friday Harbor16
15 days with some rainfall in March in Friday Harbor15
13 days with some rainfall in April in Friday Harbor13
11 days with some rainfall in May in Friday Harbor11
9 days with some rainfall in June in Friday Harbor9
6 days with some rainfall in July in Friday Harbor6
6 days with some rainfall in August in Friday Harbor6
9 days with some rainfall in September in Friday Harbor9
14 days with some rainfall in October in Friday Harbor14
18 days with some rainfall in November in Friday Harbor18
19 days with some rainfall in December in Friday Harbor19
Average monthly rainfall (inches)
4.0 inches monthly rainfall in January in Friday Harbor4.0
2.8 inches monthly rainfall in February in Friday Harbor2.8
2.2 inches monthly rainfall in March in Friday Harbor2.2
1.6 inches monthly rainfall in April in Friday Harbor1.6
1.3 inches monthly rainfall in May in Friday Harbor1.3
1.1 inches monthly rainfall in June in Friday Harbor1.1
0.8 inches monthly rainfall in July in Friday Harbor0.8
1.0 inches monthly rainfall in August in Friday Harbor1.0
1.4 inches monthly rainfall in September in Friday Harbor1.4
2.6 inches monthly rainfall in October in Friday Harbor2.6
4.1 inches monthly rainfall in November in Friday Harbor4.1
4.4 inches monthly rainfall in December in Friday Harbor4.4

More about Friday Harbor

Friday Harbor by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for Washington State

Marriott discount code: up to 20% off long hotel stays

  • Save up to 20% when you book long stays with Marriott
  • 20% off - 4-6 nights, 15% off 3 nights
  • Book participating hotels in Europe, the Middle East & Africa
Show discount codeShow discount code ******UK8
Redeem Marriott discount code >>

View all Marriott offers

The climate guide for Washington State (Friday Harbor) shows long term monthly weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

What's the climate like in Friday Harbor?

Friday Harbor has a temperate climate with warm dry summers.

Metric (°C)  |  Imperial (°F)

Back to top

More about the USA

Compare Friday Harbor with the UK

Below the Friday Harbor chart shows average maximum daytime temperature for Friday Harbor, Washington, USA and the UK (London).

Maximum daytime temperature (°F)

Friday Harbor, Washington, USA
UK (London)
45
45
46
45
50
50
55
55
61
63
66
68
70
72
70
72
64
66
57
59
48
50
45
46
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Metric (°C)  |  Imperial (°F)

Compare more Friday Harbor weather >>

Back to top

Related posts

Popular travel offers

Explore holidays in the sun for less

More holidays

Airport parking

More parking

Airport lounges

More lounges

Top ^