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Contents
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall
- Average snowfall days
- Average sea temperature
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
Weather in January
January, the same as December, in Friday Harbor, Washington, is another chilly winter month, with an average temperature ranging between min 41°F (5°C) and max 45.3°F (7.4°C). January, February and December, when the average high-temperature reaches 45.3°F (7.4°C), are the coldest months. Weather in January »
Weather in February
February, the last month of the winter in Friday Harbor, is also a frosty month, with an average temperature fluctuating between 45.3°F (7.4°C) and 40.5°F (4.7°C). January, February and December are identified as the coldest months, with an average high-temperature of 45.3°F (7.4°C). Weather in February »
Weather in March
March, the first month of the spring in Friday Harbor, is also a frosty month, with an average temperature fluctuating between 48.4°F (9.1°C) and 43°F (6.1°C). The beginning of March records an average high-temperature of a still chilly 48.4°F (9.1°C), almost echoing the conditions of the previous month. Weather in March »
Weather in April
April in Friday Harbor, Washington, is a fresh spring month, with an average temperature fluctuating between 46.2°F (7.9°C) and 52.2°F (11.2°C). As March turns into April, the average high-temperatures rest at a fresh 52.2°F (11.2°C), showing a minor variation from the prior month. Weather in April »
Weather in May
May, the last month of the spring in Friday Harbor, is a refreshing month, with an average temperature fluctuating between 50.9°F (10.5°C) and 57.7°F (14.3°C). Friday Harbor's weather in May presents a minor rise in the average high-temperature, moving from a fresh 52.2°F (11.2°C) in April to a refreshing 57.7°F (14.3°C). Weather in May »
Weather in June
The first month of the summer, June, is an enjoyable month in Friday Harbor, Washington, with an average temperature varying between 54°F (12.2°C) and 61.3°F (16.3°C). Friday Harbor measures an average high-temperature of an enjoyable 61.3°F (16.3°C) in June, nearly consistent with the preceding month. Weather in June »
Weather in July
July, the same as June, is another refreshing summer month in Friday Harbor, Washington, with an average temperature fluctuating between 57.2°F (14°C) and 64.9°F (18.3°C). July stands out as Friday Harbor's warmest month, with temperatures ranging between an average high of 64.9°F (18.3°C) and a low of 57.2°F (14°C). Weather in July »
Weather in August
August, the last month of the summer in Friday Harbor, is another refreshing month, with temperature in the range of an average high of 64.4°F (18°C) and an average low of 57.7°F (14.3°C). August's onset brings an average high-temperature of a still refreshing 64.4°F (18°C), showing a minute difference from July's 64.9°F (18.3°C). Weather in August »
Weather in September
September, the first month of the autumn in Friday Harbor, is also an enjoyable month, with temperature in the range of an average low of 55.6°F (13.1°C) and an average high of 61.3°F (16.3°C). Friday Harbor records an average high-temperature of a still enjoyable 61.3°F (16.3°C) as September arrives, nearly mirroring the previous month's climate. Weather in September »
Weather in October
October, the same as September, in Friday Harbor, Washington, is another mild autumn month, with an average temperature ranging between min 50.9°F (10.5°C) and max 55.4°F (13°C). Friday Harbor in October undergoes a slight reduction in the average high-temperature, shifting from September's comfortable 61.3°F (16.3°C) to a mild 55.4°F (13°C). Weather in October »
Weather in November
November, the last month of the autumn in Friday Harbor, is also a fresh month, with temperature in the range of an average high of 50.2°F (10.1°C) and an average low of 45.5°F (7.5°C). The initiation of November records an average high-temperature of a cool 50.2°F (10.1°C), displaying a near consistency with the previous month. Weather in November »
Weather in December
The first month of the winter, December, is still a chilly month in Friday Harbor, Washington, with an average temperature fluctuating between 40.6°F (4.8°C) and 45.3°F (7.4°C). January, February and December, when the average high-temperature reaches 45.3°F (7.4°C), are the coldest months. Weather in December »
Updated: Jun 19, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the coldest months?
The temperature hits its lowest levels in January, February and December, recording an average high-temperature of 45.3°F (7.4°C).
What are the most humid months?
January, August and September, with an average relative humidity of 79%, are most humid months.
How much does it rain?
Throughout the year, there are 167.7 rainfall days, and 23.46" (596mm) of precipitation is accumulated.
When does it snow in Friday Harbor?
January through March, November and December are months with snowfall.
How much does it snow?
Throughout the year, there are 6.9 snowfall days, and 3.43" (87mm) of snow is accumulated.
What are the months with the coldest ocean?
January and February, with an average ocean temperature of 45°F (7.2°C), are months with the coldest seawater.
What are the months with the lowest UV index?
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2.
When does it snow the most?
The month with the most snowfall is February, when snow falls for 2.7 days and typically aggregates up to 1.77" (45mm) of snow.
When is Daylight Saving Time (DST)?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from PST to PDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from PDT to PST.
What is the least humid month?
April is the least humid month, with an average relative humidity of 76%.
When it does not snow?
In Friday Harbor, snow does not fall in April through October.
When are the longest days?
June has the longest days of the year in Friday Harbor, with an average of 16h and 6min of daylight.
What is the warmest month?
In Friday Harbor, temperatures reach their average annual highs in July, measuring 64.9°F (18.3°C) and a minimum average of 57.2°F (14°C).
What is the driest month?
July is the month with the least rainfall. Rain falls for 6.1 days and accumulates 0.43" (11mm) of precipitation.
What month has the most sunshine?
With an average of 11.1h of sunshine, July has the most sunshine of the year.
What is the month with the highest UV index?
With an average maximum UV index of 5, July is the month with the highest UV index.
What months are the ocean warmest?
The months with the warmest seawater in Friday Harbor are August and September, with an average ocean temperature of 52.3°F (11.3°C).
What is the wettest month?
The month with the most rainfall is November, when the rain falls for 19.1 days and typically aggregates up to 3.43" (87mm) of precipitation.
What is the month with the shortest days?
With an average of 8h and 24min of daylight, December has the shortest days of the year.
What is the month with the least sunshine?
With an average of 4.1h of sunshine, December has the least sunshine of the year.
Average temperature
Friday Harbor, WA
The warmest month (with the highest average high temperature) is July (64.9°F).
The months with the lowest average high temperature are January, February and December (45.3°F).
The month with the highest average low temperature is August (57.7°F).
The coldest month (with the lowest average low temperature) is February (40.5°F).
Average pressure
Friday Harbor, WA
- Average pressure in January:
30.07"Hg - Average pressure in February:
30.05"Hg - Average pressure in March:
30"Hg - Average pressure in April:
30.04"Hg - Average pressure in May:
30.03"Hg - Average pressure in June:
30.03"Hg
- Average pressure in July:
30.05"Hg - Average pressure in August:
30.02"Hg - Average pressure in September:
30.01"Hg - Average pressure in October:
30.03"Hg - Average pressure in November:
30.02"Hg - Average pressure in December:
30.06"Hg
The month with the highest atmospheric pressure is January (30.07"Hg).
The month with the lowest atmospheric pressure is March (30"Hg).
Average wind speed
Friday Harbor, WA
- Average wind speed in January:
9.7mph - Average wind speed in February:
9.7mph - Average wind speed in March:
9.4mph - Average wind speed in April:
8.5mph - Average wind speed in May:
6.2mph - Average wind speed in June:
6.5mph
- Average wind speed in July:
5.7mph - Average wind speed in August:
4.9mph - Average wind speed in September:
5.7mph - Average wind speed in October:
7.7mph - Average wind speed in November:
10.7mph - Average wind speed in December:
10.5mph
The windiest month (with the highest average wind speed) is November (10.7mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).
Average humidity
Friday Harbor, WA
The months with the highest relative humidity are January, August and September (79%).
The month with the lowest relative humidity is April (76%).
Average rainfall
Friday Harbor, WA
- Average rainfall in January:
3.15" - Average rainfall in February:
2.87" - Average rainfall in March:
2.17" - Average rainfall in April:
1.69" - Average rainfall in May:
1.34" - Average rainfall in June:
0.91"
- Average rainfall in July:
0.43" - Average rainfall in August:
0.71" - Average rainfall in September:
1.34" - Average rainfall in October:
2.48" - Average rainfall in November:
3.43" - Average rainfall in December:
2.95"
The wettest month (with the highest rainfall) is November (3.43").
The driest month (with the least rainfall) is July (0.43").
Average rainfall days
Friday Harbor, WA
- Average rainfall days in January:
17.3 days - Average rainfall days in February:
16.8 days - Average rainfall days in March:
20.2 days - Average rainfall days in April:
16.3 days - Average rainfall days in May:
12.3 days - Average rainfall days in June:
9.6 days
- Average rainfall days in July:
6.1 days - Average rainfall days in August:
5.3 days - Average rainfall days in September:
11.6 days - Average rainfall days in October:
15.5 days - Average rainfall days in November:
19.1 days - Average rainfall days in December:
17.6 days
The month with the highest number of rainy days is March (20.2 days).
The month with the least rainy days is August (5.3 days).
Average snowfall
Friday Harbor, WA
The month with the highest snowfall is February (1.77").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days
Friday Harbor, WA
- Average snowfall days in January:
1.5 days - Average snowfall days in February:
2.7 days - Average snowfall days in March:
0.7 days - Average snowfall days in April:
0.2 days - Average snowfall days in May:
0 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0 days - Average snowfall days in November:
0.5 days - Average snowfall days in December:
1.3 days
The month with the highest number of snowfall days is February (2.7 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average sea temperature
Friday Harbor, WA
The best months for swimming (with the highest average sea temperature) are August and September (52.3°F).
The coldest month (with the lowest average sea temperature) is February (44.9°F).
Average daylight / Average sunshine
Friday Harbor, WA
- Average daylight in January:
8h and 5min - Average daylight in February:
10h and 1min - Average daylight in March:
11h and 5min - Average daylight in April:
13h and 4min - Average daylight in May:
15h and 2min - Average daylight in June:
16h and 1min
- Average daylight in July:
15h and 4min - Average daylight in August:
14h and 2min - Average daylight in September:
12h and 4min - Average daylight in October:
10h and 5min - Average daylight in November:
9h and 1min - Average daylight in December:
8h and 2min
The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in January:
4h and 1min - Average sunshine in February:
4h and 2min - Average sunshine in March:
6h and 2min - Average sunshine in April:
8h and 2min - Average sunshine in May:
9h and 4min - Average sunshine in June:
10h and 1min
- Average sunshine in July:
11h and 1min - Average sunshine in August:
10h and 5min - Average sunshine in September:
9h and 2min - Average sunshine in October:
5h and 3min - Average sunshine in November:
4h and 4min - Average sunshine in December:
4h and 1min
The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 4h and 6min).
Average sunshine days
Friday Harbor, WA
- Average sunshine days in January:
10.8 days - Average sunshine days in February:
8.9 days - Average sunshine days in March:
8.8 days - Average sunshine days in April:
11.4 days - Average sunshine days in May:
17.1 days - Average sunshine days in June:
18.1 days
- Average sunshine days in July:
24.3 days - Average sunshine days in August:
24.7 days - Average sunshine days in September:
17.4 days - Average sunshine days in October:
13.8 days - Average sunshine days in November:
8.7 days - Average sunshine days in December:
10.6 days
The month with the most sunshine days is August (24.7 days).
The month with the least sunshine days is November (8.7 days).
Average UV index
Friday Harbor, WA
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover
Friday Harbor, WA
The months with the most cloud cover are February and December (Cloud cover 56).
The months with the least cloud cover are July and August (Cloud cover 23).
Average visibility
Friday Harbor, WA
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Friday Harbor, Washington, USA
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