Climate and monthly weather forecastRoseau, MN

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 »