Climate and monthly weather forecast
Roseau, MN

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The climate of Roseau

Roseau, Minnesota, USA sits in a Köppen climate classification of Dfb. This designation symbolizes a humid continental climate with warm summers and no dry season. Throughout the year, it exhibits a wide range of weather dynamics, leaving the clear demarcations between the four seasons, each with its unique characteristics.

During the course of a typical year in Roseau, temperatures vary significantly, ranging from 0°F (-17.8°C) in the coldest months to a high of 76.5°F (24.7°C) during the warmest period. Humidity also sees a sizeable fluctuation from a low of 67% to a peak of 94%. Rainfall volumes also range widely across the varied weather conditions, with the driest month receiving 0.59" (15mm) while the wettest month experiences up to 2.83" (72mm) of rainfall.

Roseau witnesses notable variations in daylight throughout the year, from a low of 8.3 hours to a maximum of 16.1 hours. This is complemented by a range in sunshine hours from 2 to as many as 10.5 hours. It is interesting to note that the snowy season lasts, on average, from 0 to as high as 17.2 snowfall days in a single month, making winter a mesmerizing sight to those fond of white landscapes.

The best time to visit Roseau

With temperatures at their peak and sunny days aplenty, June through August are deemed ideal months for a visit to Roseau. During these months, average temperatures hover between 61.7°F (16.5°C) to 76.5°F (24.7°C) with relative humidity ranging from 70% to 77% ensuring a pleasant but not overly humid climate. Moreover, the amount of sunshine received stands high at approximately 10 hours per day.

The worst time to visit Roseau

Alternatively, the months from December to February are typically marked as the least appealing for potential visitors. During this period, temperatures can dip down dramatically to as low as 0°F (-17.8°C). Exceptionally heavy snowfall — with month maximums at 5" (127mm) — and significantly reduced daylight hours around 8.3 hours also add to these months' overall inhospitable conditions.

Spring weather in Roseau

Spring sets in Roseau, Minnesota with noticeably prolonged daylight hours, an increase from 8.8 hour in January to 13.8 hours in April. Following the freezing winter months, temperatures begin to rise steadily — from 1.8°F (-16.8°C) to 31.3°F (-0.4°C) in this season, allowing the frozen landscapes slowly to spring back to life. The onset of the warm weather also brings with it increased rainfall, as the months of March to May each receive over an inch of rain.

Summer weather in Roseau

With the arrival of summer, temperatures spike to comfortable highs ranging from 61.7°F (16.5°C) to 75.7°F (24.3°C) from June to August. The relative humidity also shows a marked increase during these months and lingers between 70% to 77%. Another distinctive feature of summer in Roseau is the long sunshine hours, which range from 9.3 to 10.5 hours per day.

Autumn weather in Roseau

As the summer ends, temperatures in Roseau begin to drop from 65.8°F (18.8°C) in September to 32.7°F (0.4°C) in November. However, the number of daylight hours starts decreasing, from 12.6 hours in September to 9.2 hours in November, marking the onset of shorter, cooler days. Rainfall decreases progressively — from 1.93" (49mm) in September to 0.71" (18mm) in November — ushering in the dry weather typical of Autumn.

Winter weather in Roseau

Winter in Roseau is characterized by low temperatures, heavy snowfall, and reduced daylight. During the winter months from December to February, temperatures plummet to as low as 0°F (-17.8°C). Snowfall is a prominent feature of this season with up to 5" (127mm) of snow a month, while daylight is scarce with an average of only 8.3 hours. As the season progresses, the presence of higher humidity levels averaging 91% also become quite noticeable, contributing to the chilly ambience of wintertime.

Weather in January

January in Roseau, Minnesota is the coldest month of the year, with frost frequently clinging to the landscape. The daytime temperatures rarely rise above freezing, leading to snow accumulating on the ground, underscored by a snowfall of 4.37" (111mm). Weather in January »

Weather in February

In February, Roseau experiences a continuation of the winter weather. However, a noticeable increase in daily sunshine from 2 hours to 2.1 hours and daylight from 8.8 hours to 10.2 hours heralds the approaching spring. The frigid temperatures persist, keeping the amount of snowfall comparable to January. Weather in February »

Weather in March

As Roseau moves into March, signs of spring become evident. While still cold, temperatures begin an upward trend, and snow becomes less frequent. A slight increase in the daily sunshine from 2.1 hours in February to 3.8 hours in March enthusiasts the residents, providing longer periods of light for outdoor activities. Weather in March »

Weather in April

In April, the city of Roseau witnesses a significant shift in weather conditions as spring takes hold. There is a considerable increase in temperatures from March to April, enabling outdoor excursions without heavy winter coats. Rainfall becomes more frequent, reaching 1.18" (30mm), assisting in melting the last remnants of snow and encouraging the explosive growth of nature. Weather in April »

Weather in May

May greets Roseau, Minnesota, with the full attributes of spring. The city experiences a considerable jump in temperatures from April, resulting in more frequent outdoor activities. The flowers erupt in a celebration of color, fueled by rainfall levels of 2.13" (54mm). Weather in May »

Weather in June

June, often an anticipated month in Roseau, is synonymous with warm temperatures and longer sunny days. The higher temperatures are also accompanied by an increase in rainfall to 2.83" (72mm), creating luscious green landscapes throughout the city. Weather in June »

Weather in July

July in Roseau marks the peak of summer with the highest temperatures of the year climbing up to 76.5°F (24.7°C). Commensurate with the warmth, it's a welcome time for the city's residents to indulge in outdoor activities, taking pleasure in the abundant sunlight. Weather in July »

Weather in August

August in Roseau sees a subtle transition from the peak of summer towards autumn. The weather is closely analogous to what the city experiences in July. A decrease in cloud cover from July aids in maintaining the warm sunny days that characterize a typical summer in Roseau. Weather in August »

Weather in September

September depicts the onset of fall in Roseau, with a steady drop in temperature following the hot summer. A noteworthy rainfall of 1.93" (49mm), accompanied by a drop in daylight hours, marks a change in season. Even though summer warmth lingers, the evenings start to get cooler. Weather in September »

Weather in October

October in Roseau, Minnesota, is characterized by a noticeable shift in the weather as fall takes center stage. There's a significant decrease in temperatures from September, indicating the looming arrival of winter. A striking impression on the landscape occurs, intensified by falling leaves creating a flaming mosaic of colors across the city. Weather in October »

Weather in November

November in Roseau signifies a drastic transition from fall to winter. A pronounced drop in daily sunshine hours from 4.7 hours in October to 3.6 hours in November indicates the advent of winter. The fall colors fade gradually, replaced by the first snowfall, providing an enchanting sight despite the chill. Weather in November »

Weather in December

December in Roseau ushers in winter in full force, characterized by its cold and snowy weather. A monthly snowfall of 5" (127mm) is evidence of December being one of the snowiest months of the year. The shorter days and longer nights leading up to the winter solstice signify the progression of the season. Weather in December »
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What part of the year is the coldest in Roseau?

During the coldest month in Roseau, January, temperatures average a high of 13.5°F (-10.3°C) and a low of -0°F (-17.8°C).

What are the most humid months in Roseau?

January and February, with an average relative humidity of 94%, are most humid months.

How many days does it rain in Roseau?

Throughout the year, there are 105.7 rainfall days, and 17.64" (448mm) of precipitation is accumulated.

When does it snow in Roseau?

January through May, October through December are months with snowfall in Roseau.

How much does it snow in Roseau?

In Roseau, during the entire year, snow falls for 89.4 days and aggregates up to 27.01" (686mm) of snow.

What is the month with the least sunshine in Roseau?

With an average of 2h of sunshine, January has the least sunshine of the year in Roseau, Minnesota.

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

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

What is the driest month in Roseau?

The month with the least rainfall in Roseau is February, when the rain falls for 1.9 days and typically collects 0.59" (15mm) of precipitation.

When is Daylight Saving Time (DST) in Roseau?

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

What is the least humid month in Roseau?

The least humid month in Roseau is May, with an average relative humidity of 67%.

What is the wettest month in Roseau?

June is the month with the most rainfall in Roseau, Minnesota. Rain falls for 16.5 days and accumulates 2.83" (72mm) of precipitation.

When it does not snow in Roseau?

In Roseau, snow does not fall in June through September.

When are the longest days in Roseau?

The month with the longest days in Roseau is June, with an average of 16h and 6min of daylight.

What are the months with the highest UV index in Roseau?

The months with the highest UV index are June through August, with an average maximum UV index of 5.

What are the warmest months in Roseau?

July, on average, is the warmest month in Roseau, registering a high temperature of 76.5°F (24.7°C) and a low of 57.7°F (14.3°C).

What month has the most sunshine in Roseau?

July has the most sunshine of the year in Roseau, with an average of 10.5h of sunshine.

When does it snow the most in Roseau?

December is the month with the most snowfall in Roseau, Minnesota. Snow falls for 16.2 days and accumulates 5" (127mm) of snow.

What is the month with the shortest days in Roseau?

The month with the shortest days in Roseau is December, with an average of 8h and 18min of daylight.

Average temperature
Roseau, MN

Average temperature - Roseau, MN

The warmest month (with the highest average high temperature) is July (76.5°F).
The month with the lowest average high temperature is January (13.5°F).

The month with the highest average low temperature is July (57.7°F).
The coldest month (with the lowest average low temperature) is January (0°F).

Average pressure
Roseau, MN

Average pressure - Roseau, MN

The month with the highest atmospheric pressure is February (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).

Average wind speed
Roseau, MN

Average wind speed - Roseau, MN

The windiest month (with the highest average wind speed) is October (9.1mph).
The calmest month (with the lowest average wind speed) is August (7.3mph).

Average humidity
Roseau, MN

Average humidity - Roseau, MN

The months with the highest relative humidity are January and February (94%).
The month with the lowest relative humidity is May (67%).

Average rainfall
Roseau, MN

Average rainfall - Roseau, MN

The wettest month (with the highest rainfall) is June (2.83").
The driest month (with the least rainfall) is February (0.59").

Average rainfall days
Roseau, MN

Average rainfall days - Roseau, MN

The month with the highest number of rainy days is June (16.5 days).
The month with the least rainy days is January (1.8 days).

Average snowfall
Roseau, MN

Average snowfall - Roseau, MN

The month with the highest snowfall is December (5").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days
Roseau, MN

Average snowfall days - Roseau, MN

The month with the highest number of snowfall days is January (17.2 days).
The months with the least snowfall days are June, July and August (0 days).

Average daylight / Average sunshine
Roseau, MN

Average daylight / Average sunshine - Roseau, MN

The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 18min).

The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 2h and 0min).

Average sunshine days
Roseau, MN

Average sunshine days - Roseau, MN

The month with the most sunshine days is August (17.1 days).
The month with the least sunshine days is June (11 days).

Average UV index
Roseau, MN

Average UV index - Roseau, MN

The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 1).

Average visibility
Roseau, MN

Average visibility - Roseau, MN

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 and December (4mi).

Roseau, Minnesota, USA

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