Climate and monthly weather forecast
Washington Island, WI

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The climate of Washington Island

Washington Island is situated in Wisconsin, USA. Its geographical location shapes the type of climate it experiences throughout the year, which is classified as a Humid continental climate according to the Köppen climate classification. This Dfb climate type signifies that there is no dry season and the summer provides warm temperatures.

Throughout a year, the climate of Washington Island shows considerable variations. The weather experiences highs from 25.9°F (-3.4°C) in January to 76.3°F (24.6°C) in July and lows ranging from 11.1°F (-11.6°C) in January to 57.2°F (14°C) in August. Rainfall varies between 0.9" (23mm) in February to 3.2" (81mm) from June to September. Snowfall can be witnessed from 13.2" (335mm) in January decreasing to 0" (0mm) from June to September and rising to 10.5" (267mm) in December.

Notable is the prolonged daylight hours during the summer season. The island enjoys the most daylight in June with 15.6 hours. Conversely, December sees the least daylight with 8.8 hours. Furthermore, rainfall days are evenly distributed between 5.5 days in February to 9.6 days in September, without any dry month.

The best time to visit Washington Island

Travelers looking forward to basking in the sun of Washington Island should consider visiting between June to August. These months are marked by warm temperatures with highs peaking at 69.6°F (20.9°C) in June, 76.3°F (24.6°C) in July, and 75.4°F (24.1°C) in August. The island experiences the most daylight around these months, especially in June having 15.6 hours of daylight. It is also noteworthy that the least snowfall is recorded from June to September with 0" (0mm), making these months the most appealing for tourists.

The worst time to visit Washington Island

The months with the harshest conditions on Washington Island are typically January and February where low temperatures can drop to 11.1°F (-11.6°C) and 11.8°F (-11.2°C) respectively. The island also experiences a considerable amount of snowfall during these months, from 13.2" (335mm) in January to 9.6" (244mm) in February, which can affect transportation and other outdoor activities. Additionally, daylight hours are limited during these winter months. The limited daylight becomes most evident in December with just 8.8 hours.

Spring weather in Washington Island

The spring season in Washington Island spans from March to May. High temperatures increase from 36.9°F (2.7°C) in March to 59.9°F (15.5°C) in May. The increase in warmth is accompanied by a rise in rainfall measurements; 1.6" (41mm) in March, 2.4" (61mm) in April, and peaking at 3" (76mm) in May. The daylight hours also extend from 12 hours in March to 14.9 hours in May, signaling longer days.

Summer weather in Washington Island

Summer on Washington Island, marking the months of June, July, and August, features average high temperatures from 69.6°F (20.9°C) to 75.4°F (24.1°C). The island undergoes a consistent rainfall of approximately 3.2" (81mm) throughout these months, and the occurrence of snowfall becomes zero. In terms of daylight, the island witnesses the longest hours in a day during this season, especially in June with 15.6 hours.

Autumn weather in Washington Island

Autumn in Washington Island covers the months of September, October, and November. The weather sees a gradual temperature decrease during this period, with average highs falling from 67.3°F (19.6°C) in September to 42.6°F (5.9°C) in November. Rainfall fluctuates minimally, ranging from 3.2" (81mm) in September to 2.3" (58mm) in November. The daylight hours also shrink from 12.5 hours in September to 9.5 hours in November.

Winter weather in Washington Island

The winter months, December, January, and February, on Washington Island are often cold. The average high temperature dwindles from 31.1°F (-0.5°C) in December to 25.9°F (-3.4°C) in January before slightly rising to 28°F (-2.2°C) in February. Snowfall is a common feature in these months, reaching from 10.5" (267mm) in December to 9.6" (244mm) in February. Daylight hours are also at their shortest, with December having the shortest daylight of the year, at 8.8 hours.

Weather in January

Temperatures being at the year's low ebb, January's weather in Washington Island, Wisconsin is cold and often marked by snowfall. The monthly average ranges from a high of 25.9°F (-3.4°C) to a low of 11.1°F (-11.6°C). Transitioning from December, the climate retains its freezing nature, yet offers an additional hour of daylight. Weather in January »

Weather in February

The environment in February on Washington Island, Wisconsin remains frigid despite a slight rise in temperature compared to the previous month. With 0.9" (23mm) of rainfall values and 9.6" (244mm) of snow on average, the short, cold days of February compete with January's chill. Weather in February »

Weather in March

With spring around the bend in Washington Island, Wisconsin, the chilly atmosphere of March shows signs of relenting. The average snowfall falls significantly to 8" (203mm) and the crispness in the March air is somewhat mitigated by increased maximum temperatures of up to 36.9°F (2.7°C). Weather in March »

Weather in April

April sees a marked shift in the weather of Washington Island, Wisconsin, effectively ushering in the warmth of spring. The average temperature strengthens from 36.9°F (2.7°C) in March to a monthly high around 48.7°F (9.3°C). Weather in April »

Weather in May

The benign atmosphere of May marks the full arrival of spring in Washington Island, Wisconsin, even nudging into early summer. The temperature pendulum swings up to reach a high of about 59.9°F (15.5°C), making it a definitive departure from April. Weather in May »

Weather in June

As mid-year approaches, June in Washington Island, Wisconsin brings warmer tones ushering in summer. Daylight hours peak at around 15.6 hours, and with average high temperatures reaching up to 69.6°F (20.9°C), clear, sunny days dominate June’s weather. Weather in June »

Weather in July

The warmest month of the year, July in Washington Island, Wisconsin is characterized by its abundant sunshine and high temperatures. Amidst consistent temperatures from 57°F (13.9°C) to 76.3°F (24.6°C), vibrant sunny days become the norm. Weather in July »

Weather in August

While some might expect August to continue July's heat, in Washington Island, Wisconsin, this month sees a slight dip in average high temperatures, hovering around 75.4°F (24.1°C). It provides a gentle reminder of the approaching end of summer. Weather in August »

Weather in September

September's charm in Washington Island, Wisconsin lies in the delicate balance it strikes between summer and fall. Temperatures become more mild, averaging at a high of approximately 67.3°F (19.6°C), Marching on from August’s temperate climate, September ushers in a drop in temperature. Weather in September »

Weather in October

In October, while the weather in Washington Island, Wisconsin sways into the colder temperature brackets, hints of a fading warm summer breeze still linger. Average temperatures experience a significant drop from September, decreasing to a high temperature of 55.8°F (13.2°C) on average. Weather in October »

Weather in November

In Washington Island, Wisconsin, November marks a definitive turn towards winter with temperatures cooling considerably from October. The average snowfall starts to inch up, marking a stark contrast from the prior months of autumn. Weather in November »

Weather in December

December in Washington Island, Wisconsin is truly a winter wonderland, dictated by the lowest temperatures of the year and the onset of significant snowfall. As temperatures plummet to average lows around 19.2°F (-7.1°C), outdoor winter activities become popular. Weather in December »
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Frequently asked questions

What are the coldest months in Washington Island?

January, marked by an average high-temperature of 25.9°F (-3.4°C) and a low-temperature of 11.1°F (-11.6°C), is the coldest month in Washington Island.

How much does it rain in Washington Island?

Throughout the year, in Washington Island, there are 99.2 rainfall days, and 28.43" (722mm) of precipitation is accumulated.

When does it snow in Washington Island?

January through May, October through December are months with snowfall in Washington Island, Wisconsin.

When does it snow the most in Washington Island?

January is the month with the most snowfall, with 13.19" (335mm) of accumulated snow.

How much does it snow in Washington Island?

In Washington Island, Wisconsin, during the entire year, snow aggregates up to 47.36" (1203mm).

What is the driest month in Washington Island?

The month with the least rainfall in Washington Island, Wisconsin, is February, when the rain falls for 5.5 days and typically collects 0.94" (24mm) of precipitation.

When is Daylight Saving Time (DST) in Washington Island?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Washington Island, Wisconsin, and the time zone changes from CST to CDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from CDT to CST.

When it does not snow in Washington Island?

In Washington Island, snow does not fall in June through September.

When are the longest days in Washington Island?

June has the longest days of the year in Washington Island, Wisconsin, with an average of 15h and 36min of daylight.

What time of the year is the hottest in Washington Island?

Washington Island's warmest weather arrives in July, when temperatures average a high of 76.3°F (24.6°C) and a low of 57°F (13.9°C).

What is the rainiest month in Washington Island?

The months with the most rainfall in Washington Island are August and September, with an average 3.23" (82mm) of precipitation.

What is the month with the shortest days in Washington Island?

With an average of 8h and 48min of daylight, December has the shortest days of the year in Washington Island.

Average temperature
Washington Island, WI

Average temperature - Washington Island, WI

The warmest month (with the highest average high temperature) is July (76.3°F).
The month with the lowest average high temperature is January (25.9°F).

The month with the highest average low temperature is August (57.2°F).
The coldest month (with the lowest average low temperature) is January (11.1°F).

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Average rainfall
Washington Island, WI

Average rainfall - Washington Island, WI

The wettest months (with the highest rainfall) are June, August and September (3.2").
The driest month (with the least rainfall) is February (0.9").

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Average rainfall days
Washington Island, WI

Average rainfall days - Washington Island, WI

The month with the highest number of rainy days is September (9.6 days).
The month with the least rainy days is February (5.5 days).

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Average snowfall
Washington Island, WI

Average snowfall - Washington Island, WI

The month with the highest snowfall is January (13.2").
The months with the least snowfall are June, July, August and September (0").

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Average daylight
Washington Island, WI

Average daylight - Washington Island, WI

The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).

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Washington Island, Wisconsin, USA

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