Climate and monthly weather forecastLeavenworth, WA
Climate and monthly weather forecast
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 »Updated: Jun 5, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
With an average relative humidity of 92%, January is the most humid month.
The month with the most rainfall is January, when the rain falls for 14.7 days and typically aggregates up to 4.33" (110mm) of precipitation.
Throughout the year, there are 159.9 rainfall days, and 25.63" (651mm) of precipitation is accumulated.
Months with snowfall are January through May, September through December.
The month with the most snowfall is January, when snow falls for 14.7 days and typically aggregates up to 16.73" (425mm) of snow.
In Leavenworth, during the entire year, snow falls for 73.4 days and aggregates up to 57.99" (1473mm) of snow.
With an average of 4.1h of sunshine, January has the least sunshine of the year.
The months with the lowest UV index are January and February, with an average maximum UV index of 1.
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.
In Leavenworth, snow does not fall in June through August.
With an average of 15h and 54min of daylight, June has the longest days of the year in Leavenworth.
The months with the lowest humidity are July and August, with an average relative humidity of 56%.
The month with the least rainfall is July, when the rain falls for 7.5 days and typically collects 0.43" (11mm) of precipitation.
With an average maximum UV index of 6, July is the month with the highest UV index.
August stands out as Leavenworth's warmest month, with an average high-temperature of 77.5°F (25.3°C) and a low-temperature of 49.6°F (9.8°C).
The month with the most sunshine is August, with an average of 11.9h of sunshine.
December is the coldest month, exhibiting average temperatures of 30.6°F (-0.8°C) at the peak and 18.7°F (-7.4°C) at the base.
With an average of 8h and 30min of daylight, December has the shortest days of the year.
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).
Average pressure
Leavenworth, WA
- Average pressure in January:
30.14"Hg - Average pressure in February:
30.08"Hg - Average pressure in March:
30.01"Hg - Average pressure in April:
30.01"Hg - Average pressure in May:
29.97"Hg - Average pressure in June:
29.96"Hg
- Average pressure in July:
29.97"Hg - Average pressure in August:
29.95"Hg - Average pressure in September:
29.98"Hg - Average pressure in October:
30.03"Hg - Average pressure in November:
30.06"Hg - Average pressure in December:
30.12"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is August (29.95"Hg).
Average wind speed
Leavenworth, WA
- Average wind speed in January:
3.7mph - Average wind speed in February:
3.9mph - Average wind speed in March:
4.4mph - Average wind speed in April:
5mph - Average wind speed in May:
5mph - Average wind speed in June:
5.7mph
- Average wind speed in July:
5.5mph - Average wind speed in August:
5.2mph - Average wind speed in September:
4.7mph - Average wind speed in October:
4.1mph - Average wind speed in November:
3.9mph - Average wind speed in December:
3.5mph
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).
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%).
Average rainfall
Leavenworth, WA
- Average rainfall in January:
4.33" - Average rainfall in February:
2.91" - Average rainfall in March:
2.87" - Average rainfall in April:
1.65" - Average rainfall in May:
1.65" - Average rainfall in June:
1.06"
- Average rainfall in July:
0.43" - Average rainfall in August:
0.51" - Average rainfall in September:
1.06" - Average rainfall in October:
2.36" - Average rainfall in November:
2.91" - Average rainfall in December:
3.86"
The wettest month (with the highest rainfall) is January (4.33").
The driest month (with the least rainfall) is July (0.43").
Average rainfall days
Leavenworth, WA
- Average rainfall days in January:
14.7 days - Average rainfall days in February:
14 days - Average rainfall days in March:
18.2 days - Average rainfall days in April:
17.7 days - Average rainfall days in May:
15.3 days - Average rainfall days in June:
11.5 days
- Average rainfall days in July:
7.5 days - Average rainfall days in August:
6.3 days - Average rainfall days in September:
10.3 days - Average rainfall days in October:
14.7 days - Average rainfall days in November:
16.7 days - Average rainfall days in December:
13 days
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).
Average snowfall
Leavenworth, WA
- Average snowfall in January:
16.73" - Average snowfall in February:
11.18" - Average snowfall in March:
7.8" - Average snowfall in April:
1.54" - Average snowfall in May:
0.04" - Average snowfall in June:
0"
The month with the highest snowfall is January (16.73").
The months with the least snowfall are June, July and August (0").
Average snowfall days
Leavenworth, WA
- Average snowfall days in January:
14.7 days - Average snowfall days in February:
14.7 days - Average snowfall days in March:
11.8 days - Average snowfall days in April:
5.2 days - Average snowfall days in May:
0.3 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0.2 days - Average snowfall days in October:
1 days - Average snowfall days in November:
8.5 days - Average snowfall days in December:
17 days
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).
Average daylight / Average sunshine
Leavenworth, WA
- Average daylight in January:
9h and 0min - Average daylight in February:
10h and 18min - Average daylight in March:
11h and 54min - Average daylight in April:
13h and 42min - Average daylight in May:
15h and 12min - Average daylight in June:
15h and 54min
- Average daylight in July:
15h and 30min - Average daylight in August:
14h and 12min - Average daylight in September:
12h and 30min - Average daylight in October:
10h and 48min - Average daylight in November:
9h and 18min - Average daylight in December:
8h and 30min
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).
- Average sunshine in January:
4h and 6min - Average sunshine in February:
4h and 18min - Average sunshine in March:
6h and 42min - Average sunshine in April:
9h and 48min - Average sunshine in May:
10h and 42min - Average sunshine in June:
11h and 30min
- Average sunshine in July:
11h and 48min - Average sunshine in August:
11h and 54min - Average sunshine in September:
10h and 30min - Average sunshine in October:
6h and 18min - Average sunshine in November:
5h and 24min - Average sunshine in December:
4h and 24min
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).
Average sunshine days
Leavenworth, WA
- Average sunshine days in January:
9.3 days - Average sunshine days in February:
6.8 days - Average sunshine days in March:
7.1 days - Average sunshine days in April:
8.5 days - Average sunshine days in May:
12.5 days - Average sunshine days in June:
14.1 days
- Average sunshine days in July:
21 days - Average sunshine days in August:
21.9 days - Average sunshine days in September:
16.5 days - Average sunshine days in October:
13.7 days - Average sunshine days in November:
8.5 days - Average sunshine days in December:
8.9 days
The month with the most sunshine days is August (21.9 days).
The month with the least sunshine days is February (6.8 days).
Average UV index
Leavenworth, WA
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January and February (UV index 1).
Average cloud cover
Leavenworth, WA
The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is August (Cloud cover 15).
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).
