Climate and monthly weather forecast
Leavenworth, WA

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A bridge across a small river heads up to the classy Posthotel in Leavenworth, Washington
A bridge across a small river heads up to the classy Posthotel in Leavenworth, Washington

The climate of Leavenworth

Found in Washington, USA, the city of Leavenworth has predominant Köppen climate classification: Dsb, which signifies a humid continental with a dry warm summer. This unique climate derives from Leavenworth's geographical situation, nestled deep in the mountains.

Leavenworth's weather characteristics fluctuate throughout the year. Temperatures peak at 77.5°F (25.3°C) in July and August, while winters bring the coldest months dipping to a chill 18.7°F (-7.4°C) in December. The summer months are characterized by significantly lower amounts of rain, with the lowest precipitation of 0.43" (11mm) typically found in July. On the contrary, rainfall increases during the winter, culminating in the highest monthly average of 4.33" (110mm) in January.

Humidity trends follow a similar pattern with relative humidity staying above 90% during the colder months, then dropping to a comfortable average of 56% in July and August. The city also experiences a range of wind speeds, picking up from an annual low of 3.5mph (5.6km/h) in December to as high as 5.7mph (9.2km/h) in June.

The best time to visit Leavenworth

Leavenworth shines the brightest from late spring to early fall. During this period, visitors will enjoy comfortable temperatures, abundant sunshine hours, and less humidity. The highest temperatures soar to 77.2°F (25.1°C) and 77.5°F (25.3°C) in July and August respectively. Additionally, the daylight duration is the longest from May to July, varying from 15.2 to 15.9 hours per day. These conditions make it an ideal period for outdoor activities such as hiking and sightseeing.

The worst time to visit Leavenworth

Planning a trip during January and February might not be the best decision, when the temperature plunges to its lowest point of 18.9°F (-7.3°C) to 19.9°F (-6.7°C). The months also bring along the maximum snowfall, with an average of 16.73" (425mm) in January and 11.18" (284mm) in February. Another factor to consider is the limited daylight, which goes down to 9 hours in December and 10.3 hours in January. These conditions are less conducive to outdoor sightseeing and activities.

Spring weather in Leavenworth

The arrival of spring in Leavenworth marks a gradual rise in temperature, ranging between 39.2°F (4°C) to 59.9°F (15.5°C) from March to May. The rainfall amounts to 6.17" (157mm) spread over these months. Moreover, spring ushers in longer sunshine hours, extending from 6.7 hours in March, up to 10.7 hours by May. Expect wind speeds to pick up slightly, averaging between 4.4mph (7.1km/h) and 5mph (8km/h).

Summer weather in Leavenworth

Summers in Leavenworth bring the warmest temperatures of the year, ranging between 66.6°F (19.2°C) to 77.5°F (25.3°C) from June to August. The city experiences the lowest rainfall during these months, with the total precipitation not exceeding 2" (51mm). Furthermore, the sunshine duration reaches its peak, averaging between 11.5 and 11.9 hours per day. This combined with light wind speeds make summer the most preferred season for tourists.

Autumn weather in Leavenworth

Autumn in Leavenworth sees the temperature dropping back down to between 51.6°F (10.9°C) and 66.4°F (19.1°C). Rainfall is moderately high in these months, with October being the wettest autumn month with 2.36" (60mm) of rain. Despite the changing weather, Leavenworth’s autumn is picturesque. Average daylight hours drop to between 10.8 hours and 12.5 hours throughout the autumn months.

Winter weather in Leavenworth

Come winter, and Leavenworth turns into a winter wonderland with temperatures diving between 18.7°F (-7.4°C) to 38.1°F (3.4°C). This period witnesses the highest level of both rainfall and snowfall. On average, the city sees an astounding 16.73" (425mm) of snow in January and 15.28" (388mm) in December, making it a paradise for winter sports enthusiasts. The window of sunlight shrinks down between 8.5 hours to 9.3 hours a day, which only adds charm to the winter landscape.

Weather in January

Leavenworth in January presents chilly temperatures and a snow-dusted landscape. This month ranks as the coldest with low temperatures at 18.9°F (-7.3°C) while high temperatures barely rise to 31.5°F (-0.3°C). Expect heavy snowfall which is ideal for winter sports enthusiasts who flock this month to enjoy the winter wonderland. Weather in January »

Weather in February

Slight improvements can be observed in February, as temperatures marginally climb both during day and night. Despite the increase, it remains firmly winter with 11.18" (284mm) of snowfall painting the city white. This is accompanied by frequent rainfall, ensuring the wintery cold conditions persist throughout the month. Weather in February »

Weather in March

As spring begins to stir, March sees a significant transition in the weather with a noticeable increase in daylight hours. Despite the prominence of chilly conditions, the snowfall is considerably lighter, giving a glimpse of the approaching spring. Weather in March »

Weather in April

Come April, a complete transformation envelops Leavenworth as temperatures cross the 30°F (-1.1°C) mark, reaching up to and sometimes beyond 47.8°F (8.8°C). Dropping snowfall levels and 1.54" (39mm) of rain instead replace the winter with signs of spring. Weather in April »

Weather in May

May witnesses a significant improvement in weather conditions as Leavenworth steps into the full swing of spring with a surge of warmth highlighting its days. A notable minimizing of rainfall to 1.65" (42mm) and clearer skies denotes the transition to drier and more pleasant weather. Weather in May »

Weather in June

June, considered as the gateway to the summer season, showcases a substantive escalation in warmth as temperatures max out at 66.6°F (19.2°C). Lower humidity levels help maintain the pleasant conditions despite the rising temperatures. Weather in June »

Weather in July

July alleviates Leavenworth's weather to peak summer conditions, identified by high temperatures hovering around a pleasant 77.2°F (25.1°C). This month is unique as it witnesses the lowest rainfall at 0.43" (11mm), reiterating the dry and warm climate. Weather in July »

Weather in August

August continues the trend of July's arid conditions with a slight increase in rainfall levels up to 0.51" (13mm). Sporting the highest recorded temperature in conjunction with last's month's heatwave, August tops at 77.5°F (25.3°C). Weather in August »

Weather in September

September brings forth a gradual decline in warmth as Leavenworth transitions into the season of Autumn. The first hints of a cooler climate are glimpsed with a drop in temperatures, although staying at a comfortable range. The city evidences an increase in rainfall marking a detectable decrease in sunlight hours. Weather in September »

Weather in October

October witnesses a more conspicuous drop in temperatures, coupled with an uptick in precipitation levels at 2.36" (60mm), indicating Leavenworth's steadfast progress into Fall. The days get shorter and the nights cooler. Despite the drop in temperatures, the increased rainfall does not give way for the return of snow just yet. Weather in October »

Weather in November

November initiates the introductory phase of winter in Leavenworth as the temperatures creep down towards the freezing point. It sets the stage for the snowy season without substantial snowfall, only reaching 4.8" (122mm). Overheads, the cloud cover is noticeably increased, leading to diminished sunlight hours along with shorter days. Weather in November »

Weather in December

December ushers in the winter season in Leavenworth with the reappearance of heavy snowfall at 15.28" (388mm). Subdued temperatures between 18.7°F (-7.4°C) and 30.6°F (-0.8°C) offer a clear signal of the shift towards the colder months. Weather in December »
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Frequently asked questions

What is the most humid month in Leavenworth?

The most humid month is January, with an average relative humidity of 92%.

What is the rainiest month in Leavenworth?

January is the month with the most rainfall. Rain falls for 14.7 days and accumulates 4.33" (110mm) of precipitation.

How much does it rain in Leavenworth?

In Leavenworth, Washington, during the entire year, the rain falls for 159.9 days and collects up to 25.63" (651mm) of precipitation.

When does it snow in Leavenworth?

January through May, September through December are months with snowfall in Leavenworth, Washington.

When does it snow the most in Leavenworth?

January is the month with the most snowfall. Snow falls for 14.7 days and accumulates 16.73" (425mm) of snow.

How much does it snow in Leavenworth?

Throughout the year, there are 73.4 snowfall days, and 57.99" (1473mm) of snow is accumulated.

What is the month with the least sunshine in Leavenworth?

January has the least sunshine of the year in Leavenworth, Washington, with an average of 4.1h of sunshine.

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

The months with the lowest UV index are January and February, with an average maximum UV index of 1.

When is Daylight Saving Time (DST) in Leavenworth?

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

June through August are months without snowfall.

When are the longest days in Leavenworth?

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

What are the least humid months in Leavenworth?

The months with the lowest humidity in Leavenworth are July and August, with an average relative humidity of 56%.

What is the driest month in Leavenworth?

The month with the least rainfall is July, when the rain falls for 7.5 days and typically collects 0.43" (11mm) of precipitation.

When is the highest UV index in Leavenworth?

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

What time of the year is the hottest in Leavenworth?

August, having an average high-temperature of 77.5°F (25.3°C) and an average low-temperature of 49.6°F (9.8°C), is the warmest month.

What month has the most sunshine in Leavenworth?

The month with the most sunshine in Leavenworth is August, with an average of 11.9h of sunshine.

What time of the year is the coldest in Leavenworth?

With average high and low temperatures of 30.6°F (-0.8°C) and 18.7°F (-7.4°C) respectively, December is Leavenworth's coldest month.

What is the month with the shortest days in Leavenworth?

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

Average temperature
Leavenworth, WA

Average temperature - Leavenworth, 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 (30.6°F).

The month with the highest average low temperature is August (49.6°F).
The coldest month (with the lowest average low temperature) is December (18.7°F).

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Average pressure
Leavenworth, WA

Average pressure - Leavenworth, WA

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is August (29.95"Hg).

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Average wind speed
Leavenworth, WA

Average wind speed - Leavenworth, WA

The windiest month (with the highest average wind speed) is June (5.7mph).
The calmest month (with the lowest average wind speed) is December (3.5mph).

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Average humidity
Leavenworth, WA

Average humidity - Leavenworth, WA

The month with the highest relative humidity is January (92%).
The months with the lowest relative humidity are July and August (56%).

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Average rainfall
Leavenworth, WA

Average rainfall - Leavenworth, WA

The wettest month (with the highest rainfall) is January (4.33").
The driest month (with the least rainfall) is July (0.43").

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Average rainfall days
Leavenworth, WA

Average rainfall days - Leavenworth, WA

The month with the highest number of rainy days is March (18.2 days).
The month with the least rainy days is August (6.3 days).

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Average snowfall
Leavenworth, WA

Average snowfall - Leavenworth, WA

The month with the highest snowfall is January (16.73").
The months with the least snowfall are June, July and August (0").

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Average snowfall days
Leavenworth, WA

Average snowfall days - Leavenworth, WA

The month with the highest number of snowfall days is December (17 days).
The months with the least snowfall days are June, July and August (0 days).

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Average daylight / Average sunshine
Leavenworth, WA

Average daylight / Average sunshine - Leavenworth, 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: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).

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Average sunshine days
Leavenworth, WA

Average sunshine days - Leavenworth, WA

The month with the most sunshine days is August (21.9 days).
The month with the least sunshine days is February (6.8 days).

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Average visibility
Leavenworth, WA

Average visibility - Leavenworth, WA

The months with the highest visibility are April, May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February, March, November and December (4mi).

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Leavenworth, Washington, USA

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