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
Rainfall
Sunshine & daylight
UV levels & humidity

Temperature in Friday Harbor (°F)

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Max temperature (daytime)	45	46	50	55	61	66	70	70	64	57	48	45
Min temperature (night-time)	36	37	39	41	45	48	52	52	50	45	39	36
Heat & Humidity	0	0	0	0	0	0	0	0	0	0	0	0
Sea temperature	45	45	46	48	50	54	55	55	54	50	48	46

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	2	3	5	6	8	9	10	9	7	4	2	2
Daily hours of daylight	9	10	12	14	15	16	16	14	13	11	9	8
UV Index (Maximum)	1	1	3	4	6	7	7	6	5	2	1	1

Rainfall in Friday Harbor

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Number of days with some rain	18	16	15	13	11	9	6	6	9	14	18	19
Average monthly rainfall (inches)	4.0	2.8	2.2	1.6	1.3	1.1	0.8	1.0	1.4	2.6	4.1	4.4

More about Friday Harbor

Friday Harbor by month

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

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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.

Friday Harbor weather in January

Expect daytime maximum temperatures of 45°F in Friday Harbor, Washington State in January based on long-term weather averages. There are 2 hours of sunshine per day on average with 18 days with some rainfall and typically 4.0 inches of rainfall in the month.

45
45°F max day temperature
2
2 hours of sunshine per day
18
18 days with some rainfall
36
36°F min night temperature
9
9 hours of daylight per day
0
No heat & humidity
4.0
4.0 inches of monthly rainfall
1
1 (Low) UV index
45
45°F sea temperature

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Friday Harbor weather in February

Expect daytime maximum temperatures of 46°F in Friday Harbor, Washington State in February based on long-term weather averages. There are 3 hours of sunshine per day on average with 16 days with some rainfall and typically 2.8 inches of rainfall in the month.

46
46°F max day temperature
3
3 hours of sunshine per day
16
16 days with some rainfall
37
37°F min night temperature
10
10 hours of daylight per day
0
No heat & humidity
2.8
2.8 inches of monthly rainfall
1
1 (Low) UV index
45
45°F sea temperature

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Friday Harbor weather in March

Expect daytime maximum temperatures of 50°F in Friday Harbor, Washington State in March based on long-term weather averages. There are 5 hours of sunshine per day on average with 15 days with some rainfall and typically 2.2 inches of rainfall in the month.

50
50°F max day temperature
5
5 hours of sunshine per day
15
15 days with some rainfall
39
39°F min night temperature
12
12 hours of daylight per day
0
No heat & humidity
2.2
2.2 inches of monthly rainfall
3
3 (Moderate) UV index
46
46°F sea temperature

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Friday Harbor weather in April

Expect daytime maximum temperatures of 55°F in Friday Harbor, Washington State in April based on long-term weather averages. There are 6 hours of sunshine per day on average with 13 days with some rainfall and typically 1.6 inches of rainfall in the month.

55
55°F max day temperature
6
6 hours of sunshine per day
13
13 days with some rainfall
41
41°F min night temperature
14
14 hours of daylight per day
0
No heat & humidity
1.6
1.6 inches of monthly rainfall
4
4 (Moderate) UV index
48
48°F sea temperature

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Friday Harbor weather in May

Expect daytime maximum temperatures of 61°F in Friday Harbor, Washington State in May based on long-term weather averages. There are 8 hours of sunshine per day on average with 11 days with some rainfall.

61
61°F max day temperature
8
8 hours of sunshine per day
11
11 days with some rainfall
45
45°F min night temperature
15
15 hours of daylight per day
0
No heat & humidity
1.3
1.3 inches of monthly rainfall
6
6 (High) UV index
50
50°F sea temperature

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Friday Harbor weather in June

Expect daytime maximum temperatures of 66°F in Friday Harbor, Washington State in June based on long-term weather averages. There are 9 hours of sunshine per day on average.

66
66°F max day temperature
9
9 hours of sunshine per day
9
9 days with some rainfall
48
48°F min night temperature
16
16 hours of daylight per day
0
No heat & humidity
1.1
1.1 inches of monthly rainfall
7
7 (High) UV index
54
54°F sea temperature

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Friday Harbor weather in July

Expect daytime maximum temperatures of 70°F in Friday Harbor, Washington State in July based on long-term weather averages. There are 10 hours of sunshine per day on average.

70
70°F max day temperature
10
10 hours of sunshine per day
6
6 days with some rainfall
52
52°F min night temperature
16
16 hours of daylight per day
0
No heat & humidity
0.8
0.8 inches of monthly rainfall
7
7 (High) UV index
55
55°F sea temperature

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Friday Harbor weather in August

Expect daytime maximum temperatures of 70°F in Friday Harbor, Washington State in August based on long-term weather averages. There are 9 hours of sunshine per day on average.

70
70°F max day temperature
9
9 hours of sunshine per day
6
6 days with some rainfall
52
52°F min night temperature
14
14 hours of daylight per day
0
No heat & humidity
1.0
1.0 inches of monthly rainfall
6
6 (High) UV index
55
55°F sea temperature

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Friday Harbor weather in September

Expect daytime maximum temperatures of 64°F in Friday Harbor, Washington State in September based on long-term weather averages. There are 7 hours of sunshine per day on average.

64
64°F max day temperature
7
7 hours of sunshine per day
9
9 days with some rainfall
50
50°F min night temperature
13
13 hours of daylight per day
0
No heat & humidity
1.4
1.4 inches of monthly rainfall
5
5 (Moderate) UV index
54
54°F sea temperature

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Friday Harbor weather in October

Expect daytime maximum temperatures of 57°F in Friday Harbor, Washington State in October based on long-term weather averages. There are 4 hours of sunshine per day on average with 14 days with some rainfall and typically 2.6 inches of rainfall in the month.

57
57°F max day temperature
4
4 hours of sunshine per day
14
14 days with some rainfall
45
45°F min night temperature
11
11 hours of daylight per day
0
No heat & humidity
2.6
2.6 inches of monthly rainfall
2
2 (Low) UV index
50
50°F sea temperature

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Friday Harbor weather in November

Expect daytime maximum temperatures of 48°F in Friday Harbor, Washington State in November based on long-term weather averages. There are 2 hours of sunshine per day on average with 18 days with some rainfall and typically 4.1 inches of rainfall in the month.

48
48°F max day temperature
2
2 hours of sunshine per day
18
18 days with some rainfall
39
39°F min night temperature
9
9 hours of daylight per day
0
No heat & humidity
4.1
4.1 inches of monthly rainfall
1
1 (Low) UV index
48
48°F sea temperature

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Friday Harbor weather in December

Expect daytime maximum temperatures of 45°F in Friday Harbor, Washington State in December based on long-term weather averages. There are 2 hours of sunshine per day on average with 19 days with some rainfall and typically 4.4 inches of rainfall in the month.

45
45°F max day temperature
2
2 hours of sunshine per day
19
19 days with some rainfall
36
36°F min night temperature
8
8 hours of daylight per day
0
No heat & humidity
4.4
4.4 inches of monthly rainfall
1
1 (Low) UV index
46
46°F sea temperature

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