Climate and monthly weather forecast
Federal Way, WA

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The climate of Federal Way

Situated in Washington, USA, Federal Way boasts a climate classified as Mediterranean, warm summer (Csb) according to the Köppen climate classification. This categorization derives from its long, dry summers and moderate, wet winters. A deep dive into the numerical climatic data reveals more details about Federal Way's unique climate throughout the year.

An observant reader of Federal Way's annual weather parameters will see modest temperature fluctuations. High temperatures rise from a comfortable 44.4°F (6.9°C) in January to a peak of 77.5°F (25.3°C) by August, while lows hover between a chilly 34.2°F (1.2°C) in December to a warm 52.9°F (11.6°C) in the same peak month of August. The humidity keeps within a narrow band as well, showing minor variation from 68% to 86% throughout the year. Interestingly, the wind speed retains a similarly steadied sway, with an annual fluctuation between 3.5mph (5.6km/h) to 5.1mph (8.2km/h) only.

Federal Way experiences its maximum rainfall of 4.72" (120mm) in December, while the driest month, July, sees an insignificant 0.43" (11mm). A remarkable characteristic of the locations climate is the snowfall, which primarily occurs only in the first and last quarter of the year, with February witnessing the highest snowfall of 3.27" (83mm). The daylight hours show a marked difference between winter and summer, with the city basking under the sun for an extravagant 15.9 hours in June, contrasting sharply with the shortest daylight spell of 8.6 hours that December brings.

The best time to visit Federal Way

Taking into consideration the temperature, humidity, rainfall, and daylight hours, July and August prove to be the most favorable months for visiting Federal Way. The temperatures climb to a comfortable range between 76.8°F (24.9°C) and 77.5°F (25.3°C), coupled with the relative humidity falling to a comfortable 68% to 69%. The rainfall is also at its minimum during these months, making outdoor activities more enjoyable. Also, with daylight reaching maximum length from 15.5 hours to 14.2 hours, these months offer ample time to explore the city.

The worst time to visit Federal Way

On the other hand, the least desirable time to visit Federal Way would be from November through January. These months show the lowest average temperature, dropping to between 42.6°F (5.9°C) and 44.4°F (6.9°C). Additionally, the relatively high rainfall reaching up to 4.72" (120mm) in December accompanied by high relative humidity of 85% to 86%, can make for quite uncomfortable outdoor activities. Moreover, the shortest daylight span of 8.6 hours to 9 hours adds to the unfavorable conditions during this period.

Spring weather in Federal Way

Spring in Federal Way, lasting from March to May, experiences a gentle warming trend with high temperatures gradually increasing from 50.5°F (10.3°C) in March to 64.9°F (18.3°C) in May. Lows during this period follow suit, rising from 36.3°F (2.4°C) to 43.7°F (6.5°C). Rainfall tends to decrease progressively from 3.27" (83mm) in March to 1.65" (42mm) in May. There is minimal to no snowfall during these months contributing to making spring a pleasant time in Federal Way.

Summer weather in Federal Way

Widely regarded as the best season, Summer in Federal Way, from June to August, is mild and dry. High temperatures fluctuate modestly between 69.4°F (20.8°C) and 77.5°F (25.3°C) and the lows remaining between 46.9°F (8.3°C) and 52.9°F (11.6°C). The city experiences minimal rainfall from 0.43" (11mm) in July to 0.63" (16mm) in August. With daylight reaching its peak and humidity at its lowest, summer provides the most enjoyable climate.

Autumn weather in Federal Way

In Federal Way, autumn sets in around September and lasts until November. The weather begins to cool, and rainfall increases, giving the city a fresh appeal. High temperatures decrease from 70°F (21.1°C) in September to 48.4°F (9.1°C) by November. While the lows move down from 49.1°F (9.5°C) to 38.7°F (3.7°C). Rainfall begins to increase significantly from 1.61" (41mm) in September to 3.78" (96mm) by November.

Winter weather in Federal Way

The winter months in Federal Way, from December to February, see the coldest temperatures and the highest rainfall. High temperatures range from 42.6°F (5.9°C) in December to 46°F (7.8°C) in February, with the lows ranging between 34.2°F (1.2°C) and 35.1°F (1.7°C). The city receives its highest rainfall of 4.72" (120mm) in December, and snowfall returns reaching its peak of 3.27" (83mm) in February, contributing to the city's beautiful wintry landscape.

Weather in January

The opening chapter of the yearly climatological narrative in Federal Way, Washington ascribes to the heart of winter living out its frosty tales. January conveys the demeanor of a quintessential winter month draped in cool breezes and frequent rainfall. Weather in January »

Weather in February

Perpetuating the chilly saga from January, February sustains the embrace of wintry conditions. A marginal hike in the temperature extends an inkling of Spring, though remaining at bay under the winter's supremacy. Snow adorns the cityscapes sparingly with an average snowfall of 3.27" (83mm), making February the month with the highest snowfall. Weather in February »

Weather in March

March ushers in the early spring, shedding off the winter layers while treading cautiously towards milder climes. Rainfall is frequent, though less voluminous as compared to preceding months. To underline, the average rainfall stands at 3.27" (83mm), distributed over 20 days. Weather in March »

Weather in April

With the arrival of April, Federal Way experiences a palpable transition to a friendlier climate regime. The city witnesses a longer play of daylight stretching about 13.7 hours, paving the way for more sunlit hours. The average maximum wind speed subsides further to around 5.1mph (8.2km/h), signaling the calmness of the spring air. Weather in April »

Weather in May

Graciously embracing the heart of spring, May elucidates a warm and lively symphony of weather elements in Federal Way, Washington. The city observes a commanding plunge in average rainfall to merely 1.65" (42mm), embracing the drier air of mid-year. Weather in May »

Weather in June

June seals the spring and gently unwraps the onset of pleasant early summer conditions. Federal Way sees a marked uptick in average high temperatures, inviting a warm air that lightens up the mood of city dwellers. A noteworthy element of June's weather is the lower number of average rainfall days, dwindling to a year-low of just 7. Weather in June »

Weather in July

Following the gentle prequel of June, July bursts into a robust summer display, making it the warmest month in Federal Way. With sweltering average highs nearing 76.8°F (24.9°C), July owns the climax of summer. rainfall transitions to a mere drizzle with less than half an inch of precipitation falling throughout the month. Weather in July »

Weather in August

The curtain of August descends keeping up with the warm template of summer set in July. Warm breezes mingle around Federal Way, preserving the heartiness of the Summer season. August carries the flame of cloudless skies with the least cloud cover of 25% throughout the month providing ample sunshine. Weather in August »

Weather in September

Marking the transition from glowing summer to mellow fall, the city adorns itself under the September sky. September sees a dip in average highs to around 70°F (21.1°C), hinting at the incoming autumn chill. The rainfall attends daily routines more frequently, with a noticeable rise in intensity. Weather in September »

Weather in October

October sways to the rhythms of fall, intruding on the warmth with a steady drop in temperatures. The weather elements appear more active than September, infusing cooler threads into the federal way's canvas. Above all, rainfall becomes voluminous again, amounting to an average of about 3.43" (87mm). Weather in October »

Weather in November

Living out the last tales of Fall, November experiences a stark transition to colder conditions. The dip in temperatures and escalating rainfall threads together the late autumn narrative. A relatively high relative humidity of 85% corroborates the rise in moisture levels and cooler temperature. Weather in November »

Weather in December

Taking cues from November, December indulges in the frigid tenderness of winter, closing the annual climatic cycle in Federal Way. This month sees an uptick in rainfall, with the maximum volume of 4.72" (120mm), marking the wettest time of the year. Weather in December »
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Frequently asked questions

What are the most humid months in Federal Way?

January and December, with an average relative humidity of 86%, are most humid months.

How much does it rain in Federal Way?

Throughout the year, there are 177.2 rainfall days, and 30.79" (782mm) of precipitation is accumulated.

When does it snow in Federal Way?

January through April, November and December are months with snowfall in Federal Way.

How much does it snow in Federal Way?

In Federal Way, during the entire year, snow falls for 13.3 days and aggregates up to 7.01" (178mm) of snow.

What are the months with the lowest UV index in Federal Way?

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

When does it snow the most in Federal Way?

The month with the most snowfall in Federal Way, Washington, is February, when snow falls for 4.4 days and typically aggregates up to 3.27" (83mm) of snow.

When is Daylight Saving Time (DST) in Federal Way?

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 Federal Way?

In Federal Way, snow does not fall in May through October.

When are the longest days in Federal Way?

The month with the longest days in Federal Way is June, with an average of 15h and 54min of daylight.

What is the least humid month in Federal Way?

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

What is the driest month in Federal Way?

July is the month with the least rainfall in Federal Way, Washington. Rain falls for 7 days and accumulates 0.43" (11mm) of precipitation.

When is the highest UV index in Federal Way?

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

What part of the year is the hottest in Federal Way?

Federal Way records the warmest temperatures in August, averaging a high of 77.5°F (25.3°C) and a low of 52.9°F (11.6°C).

What month has the most sunshine in Federal Way?

August has the most sunshine of the year in Federal Way, Washington, with an average of 10.9h of sunshine.

What is the coldest month in Federal Way?

December, with its high-temperature average of 42.6°F (5.9°C) and a low-temperature average of 34.2°F (1.2°C), is the coldest month.

What is the wettest month in Federal Way?

December is the month with the most rainfall in Federal Way. Rain falls for 18.2 days and accumulates 4.72" (120mm) of precipitation.

What is the month with the shortest days in Federal Way?

The month with the shortest days is December, with an average of 8h and 30min of daylight.

What is the month with the least sunshine in Federal Way?

December has the least sunshine of the year, with an average of 4.2h of sunshine.

Average temperature
Federal Way, WA

Average temperature - Federal Way, WA

The warmest month (with the highest average high temperature) is August (77.5°F).
The month with the lowest average high temperature is December (42.6°F).

The month with the highest average low temperature is August (52.9°F).
The coldest month (with the lowest average low temperature) is December (34.2°F).

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Average pressure
Federal Way, WA

Average pressure - Federal Way, WA

The month with the highest atmospheric pressure is January (30.1"Hg).
The months with the lowest atmospheric pressure are March, August and September (30.01"Hg).

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Average wind speed
Federal Way, WA

Average wind speed - Federal Way, WA

The windiest month (with the highest average wind speed) is March (5.1mph).
The calmest months (with the lowest average wind speed) are July and August (3.5mph).

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Average humidity
Federal Way, WA

Average humidity - Federal Way, WA

The months with the highest relative humidity are January and December (86%).
The month with the lowest relative humidity is July (68%).

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Average rainfall
Federal Way, WA

Average rainfall - Federal Way, WA

The wettest month (with the highest rainfall) is December (4.72").
The driest month (with the least rainfall) is July (0.43").

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Average rainfall days
Federal Way, WA

Average rainfall days - Federal Way, WA

The month with the highest number of rainy days is March (20 days).
The month with the least rainy days is August (5.9 days).

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Average snowfall
Federal Way, WA

Average snowfall - Federal Way, WA

The month with the highest snowfall is February (3.27").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days
Federal Way, WA

Average snowfall days - Federal Way, WA

The month with the highest number of snowfall days is February (4.4 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
Federal Way, WA

Average daylight / Average sunshine - Federal Way, 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 54min).
The month with the least sunshine is December (Average sunshine: 4h and 12min).

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Average sunshine days
Federal Way, WA

Average sunshine days - Federal Way, WA

The month with the most sunshine days is August (22.8 days).
The months with the least sunshine days are February and November (8.5 days).

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Average UV index
Federal Way, WA

Average UV index - Federal Way, 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
Federal Way, WA

Average visibility - Federal Way, WA

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

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Federal Way, Washington, USA

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