Climate and monthly weather forecast
Plymouth, WA

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Weather in January

January, like December, in Plymouth, Washington, is an icy winter month, with temperature in the range of an average low of 29.7°F (-1.3°C) and an average high of 39.9°F (4.4°C). The onset of January notes an average high-temperature of a still cold 39.9°F (4.4°C), subtly shifted from December's 38.7°F (3.7°C). Weather in January »

Weather in February

The last month of the winter, February, is a frosty month in Plymouth, Washington, with an average temperature varying between 32.9°F (0.5°C) and 45.1°F (7.3°C). Plymouth, Washington, records an average high-temperature of a frosty 45.1°F (7.3°C) as February arrives, nearly mirroring the previous month's climate. Weather in February »

Weather in March

March, the first month of the spring in Plymouth, is a fresh month, with an average temperature varying between 54.1°F (12.3°C) and 37.9°F (3.3°C). March's arrival signals an increase in average high-temperatures, moving from February's frosty 45.1°F (7.3°C) to a fresh 54.1°F (12.3°C). Weather in March »

Weather in April

April is a refreshing spring month in Plymouth, Washington, with an average temperature ranging between min 43.3°F (6.3°C) and max 62.4°F (16.9°C). The shift into April is accompanied by a modest temperature increase, with the average high-temperature edging up from a cool 54.1°F (12.3°C) in March to an enjoyable 62.4°F (16.9°C). Weather in April »

Weather in May

May, the last month of the spring in Plymouth, is an agreeable month, with temperature in the range of an average low of 49.8°F (9.9°C) and an average high of 72.1°F (22.3°C). As April transitions into May, Plymouth sees a rise in the average high-temperature, moving from an enjoyable 62.4°F (16.9°C) to an agreeable 72.1°F (22.3°C). Weather in May »

Weather in June

The first month of the summer, June, is a warm month in Plymouth, Washington, with an average temperature varying between 55.9°F (13.3°C) and 79.2°F (26.2°C). The commencement of June sees a minor shift in the average high-temperature, moving from an agreeable 72.1°F (22.3°C) in May to a moderately hot 79.2°F (26.2°C). Weather in June »

Weather in July

July in Plymouth, Washington, is a hot summer month, with an average temperature ranging between max 89.1°F (31.7°C) and min 62.8°F (17.1°C). July, with an average high of 89.1°F (31.7°C) and a low of 62.8°F (17.1°C), signifies the warmest month of the year. Weather in July »

Weather in August

August, the last month of the summer in Plymouth, is another tropical month, with temperature in the range of an average low of 64.2°F (17.9°C) and an average high of 87.8°F (31°C). The average high-temperature during August is a still hot 87.8°F (31°C), almost matching the conditions of the preceding month. Weather in August »

Weather in September

The first month of the autumn, September, is still a warm month in Plymouth, Washington, with an average temperature fluctuating between 57.4°F (14.1°C) and 77.2°F (25.1°C). September's onset brings a reduction in the average high-temperature, from a hot 87.8°F (31°C) in August to a warm 77.2°F (25.1°C). Weather in September »

Weather in October

October, the same as September, is another refreshing autumn month in Plymouth, Washington, with an average temperature varying between 61.9°F (16.6°C) and 46.8°F (8.2°C). The arrival of October is marked by a notable decrease in high-temperatures, falling from a moderately hot 77.2°F (25.1°C) in September to a refreshing 61.9°F (16.6°C). Weather in October »

Weather in November

November, the last month of the autumn in Plymouth, is another chilly month, with an average temperature varying between 49.1°F (9.5°C) and 36.7°F (2.6°C). November indicates a shift in the average high-temperature, from October's comfortable 61.9°F (16.6°C) to a frosty 49.1°F (9.5°C). Weather in November »

Weather in December

December, the first month of the winter in Plymouth, is also an icy month, with an average temperature varying between 38.7°F (3.7°C) and 28.6°F (-1.9°C). In Plymouth, December is the coldest month, with temperatures averaging a high of 38.7°F (3.7°C) and a low of 28.6°F (-1.9°C). Weather in December »
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Frequently asked questions

What is the most humid month in Plymouth?

With an average relative humidity of 79%, January is the most humid month in Plymouth, Washington.

How many days does it rain in Plymouth?

In Plymouth, Washington, during the entire year, the rain falls for 106.1 days and collects up to 7.76" (197mm) of precipitation.

When does it snow in Plymouth?

Months with snowfall are January through March, September, November and December.

How much does it snow in Plymouth?

Throughout the year, there are 10.3 snowfall days, and 6.02" (153mm) of snow is accumulated.

What are the months with the least sunshine in Plymouth?

The months with the least sunshine in Plymouth, Washington, are January and December, with an average of 5.4h of sunshine.

When is the lowest UV index in Plymouth?

The months with the lowest UV index in Plymouth are January, February, November and December, with an average maximum UV index of 2.

When does it snow the most in Plymouth?

February is the month with the most snowfall. Snow falls for 2.9 days and accumulates 2.83" (72mm) of snow.

What is the rainiest month in Plymouth?

The month with the most rainfall in Plymouth is March, when the rain falls for 13.1 days and typically aggregates up to 1.02" (26mm) of precipitation.

When is Daylight Saving Time (DST) in Plymouth?

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.

When it does not snow in Plymouth?

In Plymouth, snow does not fall in April through August and October.

When are the longest days in Plymouth?

June has the longest days of the year, with an average of 15h and 42min of daylight.

What part of the year is the hottest in Plymouth?

Plymouth's warmest weather arrives in July, when temperatures average a high of 89.1°F (31.7°C) and a low of 62.8°F (17.1°C).

What is the least humid month in Plymouth?

July and August, with an average relative humidity of 36%, are the least humid months in Plymouth.

What is the driest month in Plymouth?

July is the month with the least rainfall in Plymouth, Washington. Rain falls for 3.8 days and accumulates 0.16" (4mm) of precipitation.

What are the months with the most sunshine in Plymouth?

The months with the most sunshine in Plymouth are July and August, with an average of 12h of sunshine.

When is the highest UV index in Plymouth?

The month with the highest UV index in Plymouth is July, with an average maximum UV index of 7.

What is the coldest month in Plymouth?

December, noted for its average high-temperature of 38.7°F (3.7°C) and an average low-temperature of 28.6°F (-1.9°C), is considered the coldest month.

What is the month with the shortest days in Plymouth?

With an average of 8h and 42min of daylight, December has the shortest days of the year in Plymouth.

Average temperature
Plymouth, WA

Average temperature - Plymouth, WA

The warmest month (with the highest average high temperature) is July (89.1°F).
The month with the lowest average high temperature is December (38.7°F).

The month with the highest average low temperature is August (64.2°F).
The coldest month (with the lowest average low temperature) is December (28.6°F).

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Average pressure
Plymouth, WA

Average pressure - Plymouth, WA

The month with the highest atmospheric pressure is January (30.19"Hg).
The month with the lowest atmospheric pressure is August (29.91"Hg).

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Average wind speed
Plymouth, WA

Average wind speed - Plymouth, WA

The windiest month (with the highest average wind speed) is April (9.3mph).
The calmest month (with the lowest average wind speed) is December (6.2mph).

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Average humidity
Plymouth, WA

Average humidity - Plymouth, WA

The month with the highest relative humidity is January (79%).
The months with the lowest relative humidity are July and August (36%).

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Average rainfall
Plymouth, WA

Average rainfall - Plymouth, WA

The wettest month (with the highest rainfall) is March (1.02").
The driest month (with the least rainfall) is July (0.16").

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Average rainfall days
Plymouth, WA

Average rainfall days - Plymouth, WA

The month with the highest number of rainy days is March (13.1 days).
The month with the least rainy days is July (3.8 days).

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Average snowfall
Plymouth, WA

Average snowfall - Plymouth, WA

The month with the highest snowfall is February (2.83").
The months with the least snowfall are April, May, June, July, August and October (0").

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Average snowfall days
Plymouth, WA

Average snowfall days - Plymouth, WA

The month with the highest number of snowfall days is December (3.2 days).
The months with the least snowfall days are April, May, June, July, August and October (0 days).

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Average daylight / Average sunshine
Plymouth, WA

Average daylight / Average sunshine - Plymouth, WA

The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).

The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The months with the least sunshine are January and December (Average sunshine: 5h and 24min).

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Average sunshine days
Plymouth, WA

Average sunshine days - Plymouth, WA

The month with the most sunshine days is July (25.3 days).
The month with the least sunshine days is February (14 days).

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Average UV index
Plymouth, WA

Average UV index - Plymouth, WA

The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).

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Average visibility
Plymouth, WA

Average visibility - Plymouth, 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).

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Plymouth, Washington, USA

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