Climate and monthly weather forecast
Manchester, WA

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Weather in January

January, the same as December, in Manchester, Washington, is another chilly winter month, with an average temperature ranging between max 45°F (7.2°C) and min 36.1°F (2.3°C). As Manchester welcomes January, the average high-temperature records at a still chilly 45°F (7.2°C), marking an insignificant deviation from the prior month. Weather in January »

Weather in February

The last month of the winter, February, is also a frosty month in Manchester, Washington, with an average temperature varying between 46°F (7.8°C) and 35.2°F (1.8°C). The beginning of February records an average high-temperature of a still frosty 46°F (7.8°C), almost echoing the conditions of the previous month. Weather in February »

Weather in March

The first month of the spring, March, is a fresh month in Manchester, Washington, with an average temperature fluctuating between 50.9°F (10.5°C) and 37.2°F (2.9°C). March's advent presents an average high-temperature of a cool 50.9°F (10.5°C), indicating a slight variation from the conditions of the previous month. Weather in March »

Weather in April

April is a refreshing spring month in Manchester, Washington, with an average temperature varying between 39.9°F (4.4°C) and 56.7°F (13.7°C). In Manchester, the onset of April comes with a modest high-temperature shift, transitioning from March's cool 50.9°F (10.5°C) to a moderate 56.7°F (13.7°C). Weather in April »

Weather in May

The last month of the spring, May, is an enjoyable month in Manchester, Washington, with an average temperature ranging between max 65.1°F (18.4°C) and min 45°F (7.2°C). May's arrival sees a mild rise in the average high-temperature, transitioning from April's mild 56.7°F (13.7°C) to an enjoyable 65.1°F (18.4°C). Weather in May »

Weather in June

The first month of the summer, June, is a pleasant month in Manchester, Washington, with an average temperature fluctuating between 48.4°F (9.1°C) and 69.4°F (20.8°C). June brings a marginal elevation to a pleasant 69.4°F (20.8°C) from May's 65.1°F (18.4°C) in Manchester's average high-temperatures. Weather in June »

Weather in July

July is a moderately hot summer month in Manchester, Washington, with temperature in the range of an average low of 52.7°F (11.5°C) and an average high of 77°F (25°C). The shift from June to July introduces a subtle increase in the average high-temperature, moving from an agreeable 69.4°F (20.8°C) to a warm 77°F (25°C). Weather in July »

Weather in August

The last month of the summer, August, is also a moderately hot month in Manchester, Washington, with an average temperature ranging between max 77.2°F (25.1°C) and min 53.6°F (12°C). The warmest time of the year is August, with temperatures averaging a high of 77.2°F (25.1°C) and a low of 53.6°F (12°C). Weather in August »

Weather in September

September, the first month of the autumn in Manchester, is still a pleasant month, with an average temperature varying between 70°F (21.1°C) and 50.9°F (10.5°C). Manchester's progression into September involves a gentle drop in the average high-temperature, from a warm 77.2°F (25.1°C) in August to an agreeable 70°F (21.1°C). Weather in September »

Weather in October

October, the same as September, in Manchester, Washington, is a moderate autumn month, with an average temperature ranging between max 58.6°F (14.8°C) and min 45°F (7.2°C). With October's arrival, Manchester's weather changes as the average high-temperature falls from an agreeable 70°F (21.1°C) in September to a moderate 58.6°F (14.8°C). Weather in October »

Weather in November

The last month of the autumn, November, is also a frosty month in Manchester, Washington, with an average temperature fluctuating between 48.9°F (9.4°C) and 39.6°F (4.2°C). The transition into November involves a decrease in the average high-temperature, falling from a moderate 58.6°F (14.8°C) in October to a frosty 48.9°F (9.4°C). Weather in November »

Weather in December

The first month of the winter, December, is still a chilly month in Manchester, Washington, with temperature in the range of an average high of 43.2°F (6.2°C) and an average low of 34.9°F (1.6°C). Manchester notes the coldest temperatures in December, with a high average of 43.2°F (6.2°C) and a low of 34.9°F (1.6°C). Weather in December »
Updated: Aug 31, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the rainiest month?

The wettest months are January and December, with an average 2.05" (52mm) of rainfall.

How many days does it rain?

Throughout the year, there are 138.9 rainfall days, and 12.24" (311mm) of precipitation is accumulated.

When does it snow?

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

How many days does it snow?

Throughout the year, there are 7 snowfall days, and 2.36" (60mm) of snow is accumulated.

What is the month with the lowest UV index?

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

What is the snowiest month?

February is the month with the most snowfall. Snow falls for 2.8 days and accumulates 1.22" (31mm) of snow.

When is the ocean coldest?

February is the month with the coldest seawater, with an average ocean temperature of 45.3°F (7.4°C).

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.

When it does not snow?

April through October are months without snowfall.

When are the longest days?

June has the longest days of the year, with an average of 15h and 54min of daylight.

What is the least humid month?

The least humid month is July, with an average relative humidity of 69%.

What is the driest month?

July is the month with the least rainfall. Rain falls for 6.2 days and accumulates 0.28" (7mm) of precipitation.

What is the month with the highest UV index?

The month with the highest UV index is July, with an average maximum UV index of 6.

What time of the year is the hottest?

Manchester's warmest month, August, registers temperatures that range from a high of 77.2°F (25.1°C) to a low of 53.6°F (12°C).

What are the months with the warmest ocean?

The months with the warmest seawater are August and September, with an average ocean temperature of 53.2°F (11.8°C).

What month has the most sunshine?

August has the most sunshine of the year, with an average of 10.7h of sunshine.

What part of the year is the coldest?

Manchester's coldest month, December, generally records average temperatures ranging from a high of 43.2°F (6.2°C) to a low of 34.9°F (1.6°C).

What is the most humid month in Manchester?

December is the most humid month, with an average relative humidity of 87%.

What is the month with the shortest days in Manchester?

With an average of 8h and 30min of daylight, December has the shortest days of the year.

What is the month with the least sunshine?

The month with the least sunshine is December, with an average of 4.1h of sunshine.

Average temperature
Manchester, WA

Average temperature - Manchester, WA

The warmest month (with the highest average high temperature) is August (77.2°F).
The month with the lowest average high temperature is December (43.2°F).

The month with the highest average low temperature is August (53.6°F).
The coldest month (with the lowest average low temperature) is December (34.9°F).

Average pressure
Manchester, WA

Average pressure - Manchester, WA

The month with the highest atmospheric pressure is January (30.09"Hg).
The months with the lowest atmospheric pressure are March, August and September (30.01"Hg).

Average wind speed
Manchester, WA

Average wind speed - Manchester, WA

The windiest month (with the highest average wind speed) is March (5.5mph).
The calmest months (with the lowest average wind speed) are July and August (3.5mph).

Average humidity
Manchester, WA

Average humidity - Manchester, WA

The month with the highest relative humidity is December (87%).
The month with the lowest relative humidity is July (69%).

Average rainfall
Manchester, WA

Average rainfall - Manchester, WA

The wettest months (with the highest rainfall) are January and December (2.05").
The driest month (with the least rainfall) is July (0.28").

Average rainfall days
Manchester, WA

Average rainfall days - Manchester, WA

The month with the highest number of rainy days is March (15.3 days).
The month with the least rainy days is August (5.4 days).

Average snowfall
Manchester, WA

Average snowfall - Manchester, WA

The month with the highest snowfall is February (1.22").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days
Manchester, WA

Average snowfall days - Manchester, WA

The month with the highest number of snowfall days is February (2.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average sea temperature
Manchester, WA

Average sea temperature - Manchester, WA

The best month for swimming (with the highest average sea temperature) is August (53.2°F).
The coldest month (with the lowest average sea temperature) is February (45.3°F).

Average daylight / Average sunshine
Manchester, WA

Average daylight / Average sunshine - Manchester, WA

The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).

The month with the most sunshine is August (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 4h and 6min).

Average sunshine days
Manchester, WA

Average sunshine days - Manchester, WA

The month with the most sunshine days is August (22.8 days).
The month with the least sunshine days is February (11.8 days).

Average UV index
Manchester, WA

Average UV index - Manchester, WA

The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

Average visibility
Manchester, WA

Average visibility - Manchester, WA

The months with the highest visibility are May, June, July, August and September (6mi).
The months with the lowest visibility are January, February, March, April, October, November and December (5mi).

Manchester, Washington, USA

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