Climate and monthly weather forecast
Steilacoom, WA

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Weather in January

January, the same as December, in Steilacoom, Washington, is another chilly winter month, with an average temperature ranging between min 35.2°F (1.8°C) and max 45.5°F (7.5°C). January's advent denotes a minor fluctuation in the average high-temperature to a still chilly 45.5°F (7.5°C) from December's 43.7°F (6.5°C). Weather in January »

Weather in February

February, the last month of the winter in Steilacoom, is also a frosty month, with an average temperature fluctuating between 46.6°F (8.1°C) and 34.3°F (1.3°C). Steilacoom's transition from January to February introduces an average high-temperature of a still frosty 46.6°F (8.1°C), marking an insignificant variation from the 45.5°F (7.5°C). Weather in February »

Weather in March

The first month of the spring, March, is a fresh month in Steilacoom, Washington, with an average temperature varying between 51.8°F (11°C) and 37°F (2.8°C). Steilacoom's entry into March measures an average high-temperature of a cool 51.8°F (11°C), closely parallel to the preceding month. Weather in March »

Weather in April

April is a mild spring month in Steilacoom, Washington, with an average temperature fluctuating between 39.4°F (4.1°C) and 57.2°F (14°C). Steilacoom's transition into April sees a mild rise in the average high-temperature, edging from a fresh 51.8°F (11°C) in March to a mild 57.2°F (14°C). Weather in April »

Weather in May

May, the last month of the spring in Steilacoom, is a comfortable month, with temperature in the range of an average low of 43.5°F (6.4°C) and an average high of 65.8°F (18.8°C). The shift from April to May introduces a subtle increase in the average high-temperature, moving from a refreshing 57.2°F (14°C) to an enjoyable 65.8°F (18.8°C). Weather in May »

Weather in June

June, the first month of the summer in Steilacoom, is a pleasant month, with an average temperature fluctuating between 70.3°F (21.3°C) and 47.1°F (8.4°C). Steilacoom records an average high-temperature of an agreeable 70.3°F (21.3°C) in June, closely mirroring the climate of the previous month. Weather in June »

Weather in July

July is a warm summer month in Steilacoom, Washington, with an average temperature ranging between min 51.4°F (10.8°C) and max 77.9°F (25.5°C). The start of July signals a slight increase in the average high-temperature, moving from an agreeable 70.3°F (21.3°C) in June to a warm 77.9°F (25.5°C). Weather in July »

Weather in August

The last month of the summer, August, is also a moderately hot month in Steilacoom, Washington, with an average temperature fluctuating between 52.7°F (11.5°C) and 78.1°F (25.6°C). August, with its high-temperature average of 78.1°F (25.6°C) and a low-temperature average of 52.7°F (11.5°C), is the warmest month. Weather in August »

Weather in September

September, the first month of the autumn in Steilacoom, is still a pleasant month, with an average temperature fluctuating between 70.9°F (21.6°C) and 49.5°F (9.7°C). September is characterized by a mild reduction in the average high-temperature, from a moderately hot 78.1°F (25.6°C) in August to a pleasant 70.9°F (21.6°C). Weather in September »

Weather in October

October, like September, is another mild autumn month in Steilacoom, Washington, with an average temperature fluctuating between 59.2°F (15.1°C) and 43.9°F (6.6°C). October weather is marked by a drop in the average high-temperature, falling from an agreeable 70.9°F (21.6°C) in September to a moderate 59.2°F (15.1°C). Weather in October »

Weather in November

The last month of the autumn, November, is also a frosty month in Steilacoom, Washington, with an average temperature varying between 38.7°F (3.7°C) and 49.6°F (9.8°C). Steilacoom in November experiences a subtle temperature decline, with average high-temperatures reducing from a moderate 59.2°F (15.1°C) in October to a chilly 49.6°F (9.8°C). Weather in November »

Weather in December

The first month of the winter, December, is also a frosty month in Steilacoom, Washington, with temperature in the range of an average low of 34.3°F (1.3°C) and an average high of 43.7°F (6.5°C). Steilacoom's coldest temperatures are experienced in December, with average high temperatures of 43.7°F (6.5°C) and lows of 34.3°F (1.3°C). Weather in December »
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Frequently asked questions

What is the most humid month in Steilacoom?

The months with the highest humidity in Steilacoom, Washington, are January and December, with an average relative humidity of 87%.

How many days does it rain in Steilacoom?

In Steilacoom, Washington, during the entire year, the rain falls for 172.9 days and collects up to 30.08" (764mm) of precipitation.

When does it snow in Steilacoom?

January through March, November and December are months with snowfall in Steilacoom.

How many days does it snow in Steilacoom?

Throughout the year, in Steilacoom, there are 8.9 snowfall days, and 5.04" (128mm) of snow is accumulated.

What are the months with the lowest UV index in Steilacoom?

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

What is the snowiest month in Steilacoom?

The month with the most snowfall is February, when snow falls for 3.2 days and typically aggregates up to 2.28" (58mm) of snow.

When is Daylight Saving Time (DST) in Steilacoom?

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 Steilacoom?

April through October are months without snowfall.

When are the longest days in Steilacoom?

With an average of 15h and 54min of daylight, June has the longest days of the year in Steilacoom, Washington.

What is the least humid month in Steilacoom?

The least humid month is July, with an average relative humidity of 68%.

What is the driest month in Steilacoom?

July is the month with the least rainfall in Steilacoom, Washington. Rain falls for 6.3 days and accumulates 0.39" (10mm) of precipitation.

What is the month with the highest UV index in Steilacoom?

With an average maximum UV index of 6, July is the month with the highest UV index in Steilacoom.

What time of the year is the hottest in Steilacoom?

The average temperatures reach their apex in August, averaging 78.1°F (25.6°C) at the high end and 52.7°F (11.5°C) at the low end.

What month has the most sunshine in Steilacoom?

August has the most sunshine of the year, with an average of 10.6h of sunshine.

What is the coldest month in Steilacoom?

December is the month when Steilacoom, Washington, experiences its coldest temperatures, averaging a high of 43.7°F (6.5°C) and a low of 34.3°F (1.3°C).

What is the rainiest month in Steilacoom?

The month with the most rainfall in Steilacoom is December, when the rain falls for 18.4 days and typically aggregates up to 4.69" (119mm) of precipitation.

What is the month with the shortest days in Steilacoom?

December has the shortest days of the year, with an average of 8h and 36min of daylight.

What is the month with the least sunshine in Steilacoom?

The month with the least sunshine in Steilacoom is December, with an average of 4h of sunshine.

Average temperature
Steilacoom, WA

Average temperature - Steilacoom, WA

The warmest month (with the highest average high temperature) is August (78.1°F).
The month with the lowest average high temperature is December (43.7°F).

The month with the highest average low temperature is August (52.7°F).
The coldest months (with the lowest average low temperature) are February and December (34.3°F).

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Average pressure
Steilacoom, WA

Average pressure - Steilacoom, 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).

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Average wind speed
Steilacoom, WA

Average wind speed - Steilacoom, WA

The windiest month (with the highest average wind speed) is March (5.2mph).
The calmest month (with the lowest average wind speed) is August (3.7mph).

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Average humidity
Steilacoom, WA

Average humidity - Steilacoom, WA

The months with the highest relative humidity are January and December (87%).
The month with the lowest relative humidity is July (68%).

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Average rainfall
Steilacoom, WA

Average rainfall - Steilacoom, WA

The wettest month (with the highest rainfall) is December (4.69").
The driest month (with the least rainfall) is July (0.39").

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Average rainfall days
Steilacoom, WA

Average rainfall days - Steilacoom, WA

The month with the highest number of rainy days is March (20.1 days).
The month with the least rainy days is August (5 days).

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Average snowfall
Steilacoom, WA

Average snowfall - Steilacoom, WA

The month with the highest snowfall is February (2.28").
The months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days
Steilacoom, WA

Average snowfall days - Steilacoom, WA

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

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Average daylight / Average sunshine
Steilacoom, WA

Average daylight / Average sunshine - Steilacoom, 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 36min).

The month with the most sunshine is August (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 4h and 0min).

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Average sunshine days
Steilacoom, WA

Average sunshine days - Steilacoom, WA

The month with the most sunshine days is August (23.4 days).
The month with the least sunshine days is February (9 days).

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Average UV index
Steilacoom, WA

Average UV index - Steilacoom, 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).

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Average visibility
Steilacoom, WA

Average visibility - Steilacoom, WA

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

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Steilacoom, Washington, USA

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