Last updated: February 24, 2025
In Duluth, United States, April ushers in a notable transition from the chill of winter to the warmer embrace of spring. With a maximum temperature reaching 18°C (65°F), the average temperature settles at a cool 2°C (35°F), while nighttime lows can dip down to a brisk -13°C (9°F). This month brings 74 mm (2.9 in) of precipitation spread over approximately 10 days, contributing to a humid atmosphere with an average humidity of 85%. The blend of temperatures and moisture creates a unique environment as nature awakens, offering a glimpse of the vibrant beauty that lies ahead.
In Duluth, April marks a significant transition as winter recedes, unveiling the promise of spring. With minimum temperatures averaging -13°C (9°F), the chill is still palpable, yet a gentle warmth begins to emerge, bringing an average temperature of 2°C (35°F). This gradual warming peaks with a max of 18°C (65°F), inviting residents to shed their heavy winter gear and enjoy the outdoors. April's climate, therefore, serves as a bridge from the frigid depths of winter to the milder temperatures of May, illustrating a clear trend towards more inviting weather. While the mornings may still carry a hint of frost, the longer days and increasing warmth hint at the vibrant life that lies ahead.
April in Duluth marks a noticeable shift towards wetter conditions, with precipitation levels rising to 74 mm (2.9 in), a significant increase from the earlier months. This uptick is reflected in the frequency of rainy days, which jump to 10, marking a clear transition from the relatively dry winter. As spring unfolds, the combination of longer days and increased rainfall not only nourishes the blooming landscapes but also sets the stage for the upcoming months, which typically see even more moisture. The patterns over the months reveal an upward trend in both precipitation and rainy days, highlighting April's role as a pivotal point in Duluth's climate narrative.
In April, Duluth experiences a notable shift in humidity levels as they decrease to 85%, marking a gradual transition from the winter months when humidity remains high, hovering around 93% in January and February. This decline continues into May, dropping further to 76%, signaling the approach of dryer summer conditions. While March sees a slight dip to 89%, the consistent reduction through April suggests a refreshing change in the atmosphere. As Duluth moves into the summer months, humidity stabilizes around the lower 70s, indicating a clear trend toward more comfortable weather as the year progresses. This pattern underscores the city's unique climate transitions, where winter’s dampness gives way to the milder, more enjoyable conditions of spring and summer.
As April rolls into Duluth, residents experience a noticeable shift in the UV Index, jumping to a high level of 7. This marks a significant increase from the previous months, where the index hovered between 2 and 4, reflecting a gradual transition into sunnier days. With a burn time of just 25 minutes, this month is a reminder to take precautions against the sun's rays as outdoor activities become more enticing. As the UV Index continues to rise through May and June, peaking at 9, it's wise to stay informed about the risks associated with increased exposure. For more details on UV trends throughout the year, check out the full report at Duluth UV Index.
UV Risk Categories
April marks a delightful turning point in Duluth, as the city basks in 239 hours of sunshine, matching the previous month and heralding the arrival of warmer days. This steady brightness is part of a growing trend that sees sunlight hours steadily increase from the dark depths of January with only 122 hours, gradually ascending through winter's end. The progression is clear: as spring unfolds, sunlight pours in, building momentum into the dazzling summer months. With May ramping up to 297 hours and June peaking at 349 hours, Duluthians can relish the vibrant transformation of their surroundings, leaving the gray days behind and embracing the warmth of the sun.
In Duluth, the likelihood of sunny weather experiences a seasonal ebb and flow, with April presenting a 31% chance of sunshine. This figure, while lower than the sunnier months ahead in May and June, reflects a notable dip from the more promising March, which stands at 43%. As spring unfolds, the transition toward brighter days does become evident, yet April remains one of the cooler transitions with fluctuating weather patterns. As the month progresses, residents can hold onto the hope of sunnier skies ahead, especially as May's 47% chance approaches, heralding a more consistently brighter season.
As spring unfolds in Duluth, April brings a noticeable increase in daylight, extending to 13 hours—a significant leap from 11 hours in March. This growing illumination heralds the transition into the warmer months, with daylight peaking at 15 hours in May and remaining steady through summer. By August, the days begin to shorten, dropping to 14 hours, and the gradual decline continues into autumn. This clear trend reflects not only the changing seasons but also the rejuvenation that spring provides, inviting residents to embrace the longer, sunnier days ahead.
As April unfolds in Duluth, the winds begin to whisper of spring, with an average speed of 3.9 m/s (9 mph), slightly lower than the preceding months. After a steady increase from January through March, where wind speeds reached 5.0 m/s (11 mph), April marks a gentle decline. This pattern often hints at the transition from the brisk, biting winds of winter to the more temperate breezes of summer. Interestingly, May sees a slight uptick back to 4.0 m/s (9 mph), suggesting that while April may play the role of a calming bridge, it paves the way for slightly reinvigorated winds as the season progresses. Notably, the summer months bring a further softening, with July's average dipping to 3.3 m/s (7 mph), reinforcing the trend of milder winds as residents embrace the warmer days ahead.
The weather in Duluth changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of April's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Duluth and find detailed weather information for every month.
April's weather offers a significant contrast to January's chill, with temperatures ranging from a minimum of -13°C (9°F) to a much warmer maximum of 18°C (65°F), leading to an average of 2°C (35°F). In comparison, January is much colder, with temperatures dropping to a minimum of -31°C (-24°F) and averaging -10°C (15°F), with a peak of only 5°C (41°F). Precipitation is more frequent in April, occurring over 10 days, while January sees less precipitation, averaging only 6 days but remaining quite damp with a humidity level of 93% compared to April's 85%. For more detailed information about January conditions, you can refer to Duluth weather in January.
When comparing the weather in April and February, it's evident that April offers a significant transition toward milder conditions. In April, temperatures range from a minimum of -13°C (9°F) to a maximum of 18°C (65°F), with an average of 2°C (35°F), while February's temperatures are notably colder, featuring a minimum of -32°C (-25°F), an average of -10°C (14°F), and a maximum of just 8°C (47°F). Precipitation also increases in April, with 74 mm (2.9 in) spread over 10 days, compared to February's 33 mm (1.3 in) across 7 days. The humidity is slightly lower in April at 85%, compared to February’s higher 93%. For more detailed insights on February conditions, you can visit Duluth weather in February.
April generally brings milder weather compared to March, with average temperatures increasing from -3°C (28°F) in March to around 2°C (35°F) in April. The minimum temperature in March can drop to -22°C (-8°F), while April sees a warmer minimum of -13°C (9°F). Additionally, April experiences slightly more precipitation, totaling 74 mm (2.9 in) over 10 days, compared to March's 53 mm (2.1 in) over just 6 days. Humidity levels remain relatively high in both months, at 85% for April and 89% for March. For a more detailed look at March's climate, you can visit Duluth weather in March.
April and May present a noticeable transition in weather patterns. In April, temperatures range from a chilly minimum of -13°C (9°F) to a mild maximum of 18°C (65°F), with an average of just 2°C (35°F). The month experiences considerable precipitation, totaling 74 mm (2.9 in) over about 10 days, accompanied by high humidity levels averaging 85%. In contrast, May sees a rise in temperatures, with minimums of -1°C (30°F) and a maximum of 26°C (79°F), yielding an average of 8°C (47°F). Precipitation increases slightly to 94 mm (3.7 in) spread across 11 days, but humidity decreases to a more comfortable 76%. For a closer look at the May weather specifics, you can visit Duluth weather in May.
April and June display quite contrasting weather patterns. In April, temperatures range from a chilly minimum of -13°C (9°F) to a pleasant maximum of 18°C (65°F), with an average temperature of just 2°C (35°F). The month experiences significant precipitation, totaling 74 mm (2.9 in) over about 10 days, paired with high humidity at 85%. In contrast, June brings warmer conditions, with temperatures ranging from a minimum of 5°C (42°F) to a maximum of 28°C (82°F), and an average temperature of 15°C (59°F). The rainfall slightly increases to 76 mm (3.0 in), but over fewer days at just 9. Additionally, humidity drops to a more comfortable 71%. For a detailed overview of the June climate, you can check Duluth weather in June.
April in Duluth experiences much colder temperatures, with a minimum of -13°C (9°F) and an average of only 2°C (35°F). The month is characterized by higher humidity at 85% and about 74 mm (2.9 in) of precipitation over 10 days, making it feel quite damp and chilly. In contrast, July offers a significant warm-up, with temperatures ranging from a minimum of 11°C (53°F) to a maximum of 27°C (82°F) and an average of 19°C (66°F). Although slightly wetter, with 95 mm (3.8 in) of precipitation over just 8 days, the humidity drops to 70%, providing a more comfortable summer atmosphere. For a closer look at July's weather specifics, check out Duluth weather in July.
April and August present contrasting weather patterns, highlighting the transition from spring to summer. In April, temperatures range from a chilly -13°C (9°F) at night to a mild 18°C (65°F) during the day, with an average temperature of 2°C (35°F). The month experiences approximately 74 mm (2.9 in) of precipitation over 10 days, coupled with a high humidity level of 85%.
In contrast, August boasts much warmer conditions, with temperatures ranging from a minimum of 13°C (55°F) to a maximum of 27°C (82°F) and an average temperature of 19°C (67°F). Precipitation increases slightly to 109 mm (4.3 in) over 11 days, but the humidity drops to 71%. For a closer look at what to expect, you can check Duluth weather in August.
April and September present distinct weather contrasts. In April, temperatures can plunge as low as -13°C (9°F), with an average temperature of around 2°C (35°F) and daytime highs reaching up to 18°C (65°F). Precipitation is frequent, with 74 mm (2.9 in) falling over approximately 10 days, alongside high humidity levels of 85%. In contrast, September enjoys milder temperatures, with lows of 4°C (39°F), an average of 16°C (62°F), and maximums peaking at 26°C (80°F). The month experiences more rainfall overall, accumulating 119 mm (4.7 in) across about 12 days, though with a lower humidity of 73%. For more detailed insights, check out the Duluth weather in September.
In April, temperatures tend to range from a chilly minimum of -13°C (9°F) to a mild maximum of 18°C (65°F), with an average temperature of around 2°C (35°F). The month experiences about 74 mm (2.9 in) of precipitation over approximately 10 days, and humidity levels are quite high at 85%.
In contrast, October sees a more moderate temperature range, with a minimum of -5°C (24°F) and a maximum of 22°C (71°F), resulting in a pleasant average of 9°C (48°F). However, it's also wetter, with precipitation totaling 153 mm (6.0 in) over 13 days and slightly lower humidity at 81%. For more details, check out Duluth weather in October.
In comparing April and November weather, both months exhibit similar temperature ranges, with April having slightly higher average and maximum temperatures than November. April's minimum temperature reaches -13°C (9°F) and averages 2°C (35°F), while November's minimum is -12°C (11°F) with an average of 1°C (34°F). Precipitation is more pronounced in April at 74 mm (2.9 in) compared to November's 52 mm (2.0 in), although both months experience precipitation on about 10 days. Additionally, November has a slightly higher humidity level at 87% compared to April's 85%. For more details about November's weather specifically, you can check out Duluth weather in November.
When comparing April and December weather, significant differences emerge in temperature and overall conditions. In April, the temperatures range from a chilly -13°C (9°F) at the minimum to a much milder maximum of 18°C (65°F), with an average of around 2°C (35°F). April also brings about 74 mm (2.9 in) of precipitation over approximately 10 days, maintaining a relatively high humidity level of 85%. In contrast, December features much colder temperatures, with a minimum of -26°C (-15°F) and an average temperature of -5°C (23°F), peaking at only 9°C (48°F). The precipitation is slightly less, at 67 mm (2.6 in) over the same number of days; however, the humidity is marginally higher at 91%. For further details on December weather specifics, you can refer to Duluth weather in December.
April in Duluth marks a remarkable transition from the biting chill of winter to the promise of spring. As temperatures begin to rise, the city experiences a blend of mild days and lingering cold nights, creating an atmosphere of renewal and unpredictability. With increased precipitation and humidity, April often feels wetter than the preceding months, embracing the necessary moisture for budding flora. While it can still be brisk, the gradual climb towards warmer averages makes for a more vibrant landscape. For a deeper dive into Duluth's climatic patterns, visit Duluth Climate.