Climate and monthly weather forecast
Lacey, WA

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The climate of Lacey

Situated in the state of Washington, USA, the town of Lacey falls under the Csb category of the Köppen climate classification system. This category represents a warm-summer Mediterranean climate. The location of Lacey grants it a mildly varying weather pattern throughout the year.

Taking a comprehensive look at the weather parameters, the region's average high temperatures fluctuate from 43°F (6.1°C) in December to a peak of 78.6°F (25.9°C) in July and August. The lowest average temperatures display a similar pattern, ranging from 33.4°F (0.8°C) in December to 50.5°F (10.3°C) in August.

Relative humidity in Lacey hovers between 71% during the drier months of June and July, and a high of 89% in January, November, and December. As for rainfall, it displays substantial variation ranging from low levels of 0.39" (10mm) in June to high levels of up to 5.79" (147mm) in December.

Lacey also experiences snowfall, but it remains infrequent and quite minimal. The town receives the greatest amount of snow in February with an average of 2.32" (59mm). Notably, no snowfall is recorded from April through November.

The best time to visit Lacey

Based on climatic factors, the most preferable time to visit Lacey is between the months of June and September. During this period, temperatures peak and rain levels drop, ensuring a pleasant and comfortable environment for outdoor activities. Maximum average temperatures hover around 70.3°F (21.3°C) in June, 77.9°F (25.5°C) in July, and 78.6°F (25.9°C) in August, before gradually cooling to 70.5°F (21.4°C) in September. Meanwhile, rainfall is at its lowest, with only 1.26" (32mm) in June, 0.39" (10mm) in July, 0.47" (12mm) in August, and 1.81" (46mm) in September.

The worst time to visit Lacey

Contrarily, the period running from November to January is less hospitable for visitors. These months typically observe the coldest and wettest conditions. Average low temperatures hit low points of 38.3°F (3.5°C) in November, 33.4°F (0.8°C) in December, and 34.3°F (1.3°C) in January. Concurrently, rainfall levels peak, with November recording 5" (127mm), December 5.79" (147mm), and January 5.71" (145mm).

Spring weather in Lacey

Between March and May, spring unfolds in Lacey exhibiting moderate temperature swings. The average high temperature progresses from 51.1°F (10.6°C) in March to 65.7°F (18.7°C) in May, while the average low temperature moves from 35.8°F (2.1°C) in March up to 41.9°F (5.5°C) in May. Rainfall reduces down the line, starting with a relatively high average of 3.94" (100mm) in March, then declining to 2.76" (70mm) in April, and dropping even further to 1.77" (45mm) in May.

Summer weather in Lacey

In Lacey, summer transpires from June to August presenting warm temperatures and the least amount of rainfall. Average high temperatures range from 70.3°F (21.3°C) in June, peaking at 78.6°F (25.9°C) in August but the corresponding low temperatures mark a steady increase from 45.3°F (7.4°C) in June to 50.5°F (10.3°C) in August. The period also observes minimal amounts of rain with averages from just 1.26" (32mm) in June to as low as 0.39" (10mm) in July before a slight increase to 0.47" (12mm) in August.

Autumn weather in Lacey

Autumn in Lacey, occurring from September to November, showcases a significant decrease in temperatures and an increase in precipitation as the season progresses. While high temperature averages decrease from 70.5°F (21.4°C) in September to 48.6°F (9.2°C) in November, low temperatures follow a similar trend sliding from 47.7°F (8.7°C) to 38.3°F (3.5°C) over the same months. Rainfall expands considerably during this season, from 1.81" (46mm) in September to a substantial 5" (127mm) in November.

Winter weather in Lacey

Winter in Lacey, which spans from December to February, records the coolest temperatures and highest precipitation levels. The high temperatures waver between 43°F (6.1°C) to 46°F (7.8°C), while the low temperatures descend to around 33.4°F (0.8°C) in December, the coldest month. Rainfall levels rise significantly during this period, with December witnessing the highest average rainfall of 5.79" (147mm). The infrequent snowfall in Lacey mostly occurs during these winter months, with February witnessing the most snowfall at an average of 2.32" (59mm).

Weather in January

January in Lacey, Washington, introduces the year with a brisk note. A blanket of clouds covers the sky for much of the month, causing frequent rainfall. Snowfall is also a distinct possibility, as the temperatures often oscillate near the freezing point. Weather in January »

Weather in February

Moving into February, Lacey experiences a slight rise in average temperatures. This slight heat surge melts lingering snow, and while rainfall persists, snowfalls become less prevalent. Although the days grow longer allowing for more sunshine, the attentiveness to a warm coat remains. Weather in February »

Weather in March

March heralds the beginnings of spring with a modest increase in temperatures, although the weather remains on the cooler side. Rainfall continues to be a dominant feature; however, the lengthening days augur increasing sunshine hours. Weather in March »

Weather in April

The arrival of April in Lacey brings more distinct signs of spring with milder temperatures and decreasing rainfall. As the spring rain showers lessen, the landscape thrives, coming alive with new foliage and blossoming life. The daylight expands further, fostering longer hours of sunshine elevated to 7h on average. Weather in April »

Weather in May

May observes a significant decrease in rainfall from 2.76" (70mm) to 1.77" (45mm) and a beneficial spike in temperatures. The weather becomes agreeably warmer, with the spring chill gradually departing. Longer days and extended sunshine hours of 8.1h promote outdoor activities and sights of locals making the most of the pleasant weather. Weather in May »

Weather in June

June welcomes the summer season with an increase in average temperatures, reaching 70.3°F (21.3°C) at their highest. Mornings are graced with a cool breeze, gradually warming up as the day progresses. The rain takes a back seat, making way for extended sunlight hours becoming the prominent feature of the daily weather. Weather in June »

Weather in July

July is the warmest month in Lacey, with the highest temperature reaching an average of 77.9°F (25.5°C). The summer heat is periodically balanced by gentle breezes, while the rainfall is kept at bay. The sun dominates the sky for an impressive 10.1h daily average cast under the longest day length of the year. Weather in July »

Weather in August

Continuing in the vein of the warm summer months, August in Lacey maintains a similar temperature range to July. As summer progresses, the air becomes drier, reducing the overall humidity. However, August retains the charm of sunny days with an average of 10.2h of sunshine despite slightly reducing daylight hours. Weather in August »

Weather in September

September witnesses the beginning of the gradual transition from summer to autumn. Temperatures start to decline, and the days become shorter. The rainfall also sees a significant increase from 0.47" (12mm) to 1.81" (46mm), hinting at the arrival of the wet season. Weather in September »

Weather in October

By October, autumn is in full swing in Lacey. Temperatures continue their downward trend and the days of summer warmth become a memory. The increase in rainfall is apparent, and cloud cover returns in full force. On the flip side, the autumn foliage in full bloom creates a mesmerizing landscape. Weather in October »

Weather in November

November in Lacey marks the onset of winter as temperatures continue to drop. With diminishing daylight hours and the sun's visibility reduced to 3.9h on average, the winter chill sets in. Rainfall maintains its consistency, providing the city with an average of 5" (127mm). Weather in November »

Weather in December

Finally, December brings the coldest average low temperature to Lacey, dropping to 33.4°F (0.8°C). The short days and limited sunlight hours of 3.4h indicate the full arrival of winter. Despite the cold, December's wind speeds show slight decline to an average of 4.2mph (6.8km/h). Weather in December »
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Frequently asked questions

What is the most humid month in Lacey?

The months with the highest humidity in Lacey, Washington, are January, November and December, with an average relative humidity of 89%.

How much does it rain in Lacey?

In Lacey, during the entire year, the rain falls for 177.4 days and collects up to 37.05" (941mm) of precipitation.

When does it snow in Lacey?

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

How much does it snow in Lacey?

Throughout the year, there are 8.7 snowfall days, and 5.31" (135mm) of snow is accumulated.

What is the month with the lowest UV index in Lacey?

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

What is the snowiest month in Lacey?

February is the month with the most snowfall. Snow falls for 3.3 days and accumulates 2.32" (59mm) of snow.

When is Daylight Saving Time (DST) in Lacey?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Lacey, 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 Lacey?

In Lacey, snow does not fall in April through October.

When are the longest days in Lacey?

With an average of 15h and 48min of daylight, June has the longest days of the year.

When is the highest UV index in Lacey?

June and July, with an average maximum UV index of 5, are months with the highest UV index.

What is the least humid month in Lacey?

With an average relative humidity of 71%, July is the least humid month in Lacey, Washington.

What is the driest month in Lacey?

July is the month with the least rainfall in Lacey. Rain falls for 6.9 days and accumulates 0.39" (10mm) of precipitation.

What month is the hottest in Lacey?

In Lacey, temperatures reach their average annual highs in August, measuring 78.6°F (25.9°C) and a minimum average of 50.5°F (10.3°C).

What month has the most sunshine in Lacey?

The month with the most sunshine is August, with an average of 10.2h of sunshine.

What is the coldest month in Lacey?

December is the month when Lacey sees the average lowest temperatures, with a high of 43°F (6.1°C) and a low of 33.4°F (0.8°C).

What is the wettest month in Lacey?

December is the month with the most rainfall. Rain falls for 18.8 days and accumulates 5.79" (147mm) of precipitation.

What is the month with the shortest days in Lacey?

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

What is the month with the least sunshine in Lacey?

December has the least sunshine of the year, with an average of 3.4h of sunshine.

Average temperature
Lacey, WA

Average temperature - Lacey, WA

The warmest month (with the highest average high temperature) is August (78.6°F).
The month with the lowest average high temperature is December (43°F).

The month with the highest average low temperature is August (50.5°F).
The coldest month (with the lowest average low temperature) is December (33.4°F).

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Average pressure
Lacey, WA

Average pressure - Lacey, WA

The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is March (30.01"Hg).

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Average wind speed
Lacey, WA

Average wind speed - Lacey, WA

The windiest months (with the highest average wind speed) are March and November (4.6mph).
The calmest month (with the lowest average wind speed) is September (3.8mph).

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Average humidity
Lacey, WA

Average humidity - Lacey, WA

The months with the highest relative humidity are January, November and December (89%).
The month with the lowest relative humidity is July (71%).

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Average rainfall
Lacey, WA

Average rainfall - Lacey, WA

The wettest month (with the highest rainfall) is December (5.79").
The driest month (with the least rainfall) is July (0.39").

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Average rainfall days
Lacey, WA

Average rainfall days - Lacey, WA

The month with the highest number of rainy days is March (20.4 days).
The month with the least rainy days is August (5.5 days).

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Average snowfall
Lacey, WA

Average snowfall - Lacey, WA

The month with the highest snowfall is February (2.32").
The months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days
Lacey, WA

Average snowfall days - Lacey, WA

The month with the highest number of snowfall days is February (3.3 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
Lacey, WA

Average daylight / Average sunshine - Lacey, WA

The month with the longest days is June (Average daylight: 15h and 48min).
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 12min).
The month with the least sunshine is December (Average sunshine: 3h and 24min).

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Average sunshine days
Lacey, WA

Average sunshine days - Lacey, WA

The month with the most sunshine days is August (22.4 days).
The month with the least sunshine days is February (8.4 days).

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Average UV index
Lacey, WA

Average UV index - Lacey, WA

The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).

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Average visibility
Lacey, WA

Average visibility - Lacey, WA

The months with the highest visibility are June, July and August (5mi).
The months with the lowest visibility are January, February, March, April, May, September, October, November and December (4mi).

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Lacey, Washington, USA

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