Des Moines
Washington, USA
Long-term weather forecast
Long-term weather forecast

Monthly weather forecast and climate
Des Moines, WA

January, the same as December, in Des Moines, Washington, is a frosty winter month, with average temperature ranging between min 35.2°F (1.8°C) and max 44.6°F (7°C). In January, the average high-temperature is almost the same as in December - a still chilly 44.6°F (7°C). Weather in January »

February, the last month of the winter, in Des Moines, is another chilly month, with average temperature ranging between max 46°F (7.8°C) and min 34.9°F (1.6°C). In Des Moines, the average high-temperature in February is relatively the same as in January - a still frosty 46°F (7.8°C). Weather in February »

The first month of the spring, March, is a cool month in Des Moines, Washington, with average temperature ranging between min 37.2°F (2.9°C) and max 51.1°F (10.6°C). In March, the average high-temperature is almost the same as in February - a cool 51.1°F (10.6°C). Weather in March »

April in Des Moines, Washington, is a moderate spring month, with temperature in the range of an average high of 56.7°F (13.7°C) and an average low of 39.7°F (4.3°C). In April, the average high-temperature marginally rises, from a fresh 51.1°F (10.6°C) in March, to a moderate 56.7°F (13.7°C). Weather in April »

May, the last month of the spring, in Des Moines, is an enjoyable month, with average temperature fluctuating between 44.4°F (6.9°C) and 65.3°F (18.5°C). In May, the average high-temperature marginally rises, from a mild 56.7°F (13.7°C) in April, to an enjoyable 65.3°F (18.5°C). Weather in May »

June, the first month of the summer, in Des Moines, is a pleasant month, with average temperature varying between 70°F (21.1°C) and 48°F (8.9°C). In June, the average high-temperature is relatively the same as in May - an agreeable 70°F (21.1°C). Weather in June »

July is a moderately hot summer month in Des Moines, Washington, with average temperature fluctuating between 52.5°F (11.4°C) and 77.2°F (25.1°C). In Des Moines, the average high-temperature in July marginally rises, from a pleasant 70°F (21.1°C) in June, to a moderately hot 77.2°F (25.1°C). Weather in July »

The last month of the summer, August, is another warm month in Des Moines, Washington, with temperature in the range of an average low of 53.6°F (12°C) and an average high of 77.7°F (25.4°C). With an average high-temperature of 77.7°F (25.4°C) and an average low-temperature of 53.6°F (12°C), August is the warmest month. Weather in August »

September, the first month of the autumn, in Des Moines, is also an agreeable month, with temperature in the range of an average low of 50.4°F (10.2°C) and an average high of 70.3°F (21.3°C). In September, the average high-temperature marginally drops, from a moderately hot 77.7°F (25.4°C) in August, to a pleasant 70.3°F (21.3°C). Weather in September »

October, like September, is another mild autumn month in Des Moines, Washington, with temperature in the range of an average low of 44.8°F (7.1°C) and an average high of 59°F (15°C). In Des Moines, the average high-temperature in October decreases, from a pleasant 70.3°F (21.3°C) in September, to a mild 59°F (15°C). Weather in October »

The last month of the autumn, November, is another chilly month in Des Moines, Washington, with average temperature fluctuating between 39°F (3.9°C) and 49.1°F (9.5°C). In November, the average high-temperature drops, from a moderate 59°F (15°C) in October, to a frosty 49.1°F (9.5°C). Weather in November »

The first month of the winter, December, is also a frosty month in Des Moines, Washington, with temperature in the range of an average high of 43.5°F (6.4°C) and an average low of 34.3°F (1.3°C). December is the coldest month, with an average high-temperature of 43.5°F (6.4°C) and an average low-temperature of 34.3°F (1.3°C). Weather in December »

What are the most humid months in Des Moines?

Months with the highest humidity are January and December, with an average relative humidity of 85%.

How many days does it rain in Des Moines?

Throughout the year, there are 138.2 rainfall days, and 14.09" (358mm) of precipitation is accumulated.

When does it snow in Des Moines?

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

How many days does it snow in Des Moines?

In Des Moines, during the entire year, snow falls for 9.8 days, and aggregates up to 4.72" (120mm) of snow.

When is the lowest UV index in Des Moines?

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

What is the snowiest month in Des Moines?

The month with the most snowfall in Des Moines is February when snow falls for 3.4 days and typically aggregates up to 2.52" (64mm) of snow.

What are the months with the coldest ocean in Des Moines?

February and April, with an average ocean temperature of 45.9°F (7.7°C), are months with the coldest seawater in Des Moines.

When it does not snow in Des Moines?

April through October are months without snowfall in Des Moines, Washington.

When are the longest days in Des Moines?

With an average of 15.9h of daylight, June has the longest days of the year in Des Moines.

What are the months with the highest UV index in Des Moines?

Months with the highest UV index in Des Moines, Washington, are June through August, with an average maximum UV index of 5.

What is the least humid month in Des Moines?

July is the least humid month in Des Moines, with an average relative humidity of 68%.

What is the driest month in Des Moines?

The month with the least rainfall is July when the rain falls for 6.3 days and typically collects 0.31" (8mm) of precipitation.

What is the warmest month in Des Moines?

With an average high-temperature of 77.7°F (25.4°C) and an average low-temperature of 53.6°F (12°C), August is the warmest month in Des Moines.

What is the month with the warmest ocean in Des Moines?

August is the month with the warmest seawater, with an average ocean temperature of 53.8°F (12.1°C).

What month has the most sunshine in Des Moines?

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

What is the coldest month in Des Moines?

With an average high-temperature of 43.5°F (6.4°C) and an average low-temperature of 34.3°F (1.3°C), December is the coldest month.

What is the rainiest month in Des Moines?

The month with the most rainfall in Des Moines, Washington, is December when the rain falls for 13.5 days and typically aggregates up to 2.2" (56mm) of precipitation.

What is the month with the shortest days in Des Moines?

December has the shortest days of the year in Des Moines, Washington, with an average of 8.5h of daylight.

What is the month with the least sunshine in Des Moines?

The month with the least sunshine in Des Moines, Washington, is December, with an average of 4.1h of sunshine.
Average temperature - Des Moines, WA
Average humidity - Des Moines, WA
Average rainfall - Des Moines, WA
Average rainfall days - Des Moines, WA

The month with the highest number of rainy days is April (14.9 days).
The month with the lowest number of rainy days is August (5.7 days).

Average snowfall - Des Moines, WA

The month with the highest snowfall is February (2.52").
Months with the lowest snowfall are April, May, June, July, August, September and October (0").

Average snowfall days - Des Moines, WA

The month with the highest number of snowfall days is February (3.4 days).
Months with the lowest number of snowfall days are May, June, July, August, September and October (0 days).

Average sea temperature - Des Moines, WA

The best month for swimming (with the highest average sea temperature) is August (53.7°F).
The coldest month (with the lowest average sea temperature) is February (45.8°F).

Average daylight / Average sunshine - Des Moines, WA
Average UV index - Des Moines, WA