Last updated: February 24, 2025
In April, Decorah experiences a dynamic range of weather, showcasing maximum temperatures reaching 26°C (80°F) and dipping to minimums of -11°C (13°F). The average temperature for the month hovers around a chilly 7°C (45°F). April is also marked by significant precipitation, totaling 80 mm (3.2 in) across approximately 10 rainy days, contributing to an humidity level of 83%. This combination of fluctuating temperatures and moisture sets the stage for the vibrant spring transformation in the region.
As April arrives in Decorah, the lingering chill of winter gives way to a more temperate climate, marked by significant warming trends. With minimum temperatures rising to -11°C (13°F) and averages reaching 7°C (45°F), the month showcases a marked contrast to the harsh sub-zero highs of the preceding months. Daytime temperatures can soar to a pleasant 26°C (80°F), inviting residents outdoors to embrace the emerging spring. The transition from March's stark cold to April's gentler embrace highlights a rapid seasonal shift, setting the stage for the vibrant warmth of May and beyond. This month is truly a breath of fresh air, as nature begins to awaken and the promise of milder weather unfolds.
April marks a significant transition in Decorah's climate, with precipitation rising to 80 mm (3.2 inches), reflecting a notable increase compared to the previous months. This uptick, recorded over 10 days, demonstrates a shift towards the wetter conditions typical of spring. Following a gradual increase from 39 mm in January to 64 mm in March, the surge in April foreshadows the even higher totals anticipated in May, which sees an impressive 155 mm (6.1 inches). This pattern indicates that as Decorah steps into spring, precipitation levels not only rise but also become more frequent, laying the groundwork for the lush greenery and vibrant landscapes that characterize the region in warmer months.
In April, Decorah experiences a slight dip in humidity, settling at 83% after a steady 84% in both January and March. This gradual decrease seems to herald the arrival of spring, marked by a shift towards more comfortable levels as the region transitions into the drier months ahead. Following April, humidity further diminishes in May to 75%, suggesting a seasonal pattern where summer brings lower moisture content. Overall, the data highlights a notable cyclical trend, with the highest humidity typically seen in late fall and winter, while spring and summer enjoy crisp, refreshing air.
In April, Decorah experiences a notable increase in UV exposure, with the UV Index soaring to 8, indicating a very high risk for sunburn with a reduced burn time of just 15 minutes. This shift marks a significant jump from the moderate categories of the earlier months, reflecting the arrival of sunnier days as spring unfolds. As we move toward May and summer, the UV index remains elevated, signaling the importance of sun safety practices during this time. Those enjoying outdoor activities should be mindful and take necessary precautions to protect their skin. To stay informed about daily UV levels and make safe choices, check the Decorah UV Index.
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As April unfolds in Decorah, residents are greeted with a delightful rise in sunshine, capturing a total of 232 hours this month, slightly outpacing March's 231 hours. This upward trend emphasizes the arrival of spring, as daylight hours continue to increase leading into May, which boasts an impressive 257 hours of sunshine. The gradual ascent from winter's low of 129 hours in January reflects a palpable transformation in the atmosphere, creating a vibrant backdrop for outdoor activities and community gatherings. As the seasons transition, April acts as a joyful bridge, heralding the longer, sun-drenched days of summer.
As spring unfolds in Decorah, the likelihood of sunny weather in April hovers around 32%, showing a slight dip compared to the previous month’s 42%. This retreat from March’s sunny days reflects the transitional nature of the season, where conditions can often fluctuate. While April may not boast the highest chance of sunshine, it paves the way for brighter days ahead, with May and June stepping in at 35% and a noticeable 55% respectively. This trend suggests that while April's sun may play hide and seek, the month is an essential precursor to the warm, sunlit days of late spring and summer.
As spring unfolds in Decorah, the length of daylight progressively increases, with April seeing a delightful 13 hours of sunshine. This marks a significant jump from the 11 hours in March, signaling the end of winter's grip and inviting more outdoor activities. The daylight hours will continue to grow, further enhancing the vibrant energy of the season, reaching a peak of 15 hours by June. As the year progresses, the days gradually shorten again, reminding us of nature's cyclical rhythm, but April serves as a refreshing milestone, celebrating longer, brighter days filled with promise and renewal.
April in Decorah brings a delightful assessment of the changing seasons, with an average wind speed of 4.1 m/s (9 mph). As spring unfolds, the winds mirror a gradual increase from the winter months, where January and February experienced calmer breezes at 3.4 m/s (8 mph) and 3.6 m/s (8 mph), respectively. March marked a noticeable uptick to 4.2 m/s (9 mph), hinting at the vibrant energy of spring. Interestingly, April's winds hold steady, just slightly below March's peak, while May offers a gentle breeze, tapering to 3.9 m/s (9 mph). Overall, April's winds are a reminder of the transition from chilly winter gusts to the softer breezes of summer, contributing to the region's revitalizing atmosphere.
The weather in Decorah 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 Decorah and find detailed weather information for every month.
When comparing the weather in April and January, it's clear that April enjoys much milder temperatures, with an average low of -11°C (13°F) compared to January’s chilling average low of -33°C (-28°F). The average temperature in April reaches up to 7°C (45°F), while January peaks at just 11°C (51°F). Additionally, April experiences more precipitation, totaling 80 mm (3.2 in) over about 10 days, whereas January sees less, with 39 mm (1.5 in) spread across 7 days. Both months have comparable humidity levels, at 83% in April and 84% in January. For a more detailed look at January weather, you can visit Decorah weather in January.
April and February present stark contrasts in weather conditions. In February, temperatures reach a minimum of -34°C (-28°F) and average around -7°C (20°F), while April sees milder temperatures with a minimum of -11°C (13°F) and an average of 7°C (45°F). The maximum temperatures in February peak at 18°C (65°F), in sharp contrast to April's warmer high of 26°C (80°F). Additionally, February experiences less precipitation, totaling 52 mm (2.0 in) over 8 days compared to April's 80 mm (3.2 in) over 10 days. Humidity levels remain similar, with February at 85% and April slightly lower at 83%. For more detailed information, check out Decorah weather in February.
April brings a noticeable shift in temperatures compared to March, with average highs rising from 21°C (69°F) to a comfortable 26°C (80°F). While March experienced colder minimum temperatures, dipping to -25°C (-12°F), April's lows are milder at -11°C (13°F). Both months see substantial precipitation, with April receiving 80 mm (3.2 in) over 10 days, compared to March's 64 mm (2.5 in) over 8 days. Humidity levels remain quite similar, with April at 83% and March slightly higher at 84%. For a detailed look at March weather specifics, you can visit Decorah weather in March.
April and May exhibit a notable shift in weather patterns. April experiences a wider temperature range, with minimums dipping to -11°C (13°F) and maximums reaching up to 26°C (80°F), while May sees milder conditions, with minimums at -2°C (29°F) and a maximum of 33°C (92°F). Precipitation increases in May, totaling 155 mm (6.1 in) over 15 days compared to April's 80 mm (3.2 in) over 10 days, leading to a wetter month. Additionally, humidity levels decline in May to 75% from April's higher 83%, indicating a slight improvement in comfort despite the increased rainfall. For a detailed look at May's weather patterns, check out Decorah weather in May.
April and June present distinct contrasts in weather patterns. In April, temperatures range from a chilly minimum of -11°C (13°F) to a maximum of 26°C (80°F), with an average of 7°C (45°F). The month witnesses approximately 80 mm (3.2 in) of precipitation over about 10 days, accompanied by high humidity levels at 83%. In contrast, June experiences much warmer conditions, with temperatures ranging from a minimum of 8°C (48°F) to a sizzling maximum of 35°C (95°F), averaging around 22°C (71°F). Rainfall increases to 130 mm (5.1 in), occurring over 11 days, and humidity slightly decreases to 79%. For more detailed information, you can explore Decorah weather in June.
April and July showcase distinct differences in weather patterns. In April, temperatures can drop as low as -11°C (13°F), with an average temperature of 7°C (45°F) and a maximum of 26°C (80°F), reflecting the transition from winter to spring. In contrast, July presents much warmer conditions, with minimum temperatures of 11°C (53°F), an average of 23°C (74°F), and a peak of 34°C (93°F), making it a vibrant summer month. Both months experience a similar number of rainy days—approximately 10—but July sees a greater total precipitation of 106 mm (4.2 in) compared to April's 80 mm (3.2 in). Additionally, the humidity in April is higher at 83%, while it drops to a more comfortable 75% in July. For more details about July weather specifically in Decorah, visit Decorah weather in July.
April and August exhibit notable differences in weather patterns. April experiences a wider temperature range, with minimums dropping as low as -11°C (13°F) and an average of 7°C (45°F), while August boasts milder temperatures, starting at a minimum of 10°C (51°F) and an average of 21°C (70°F). Precipitation is somewhat similar, with April receiving 80 mm (3.2 in) and August slightly higher at 109 mm (4.3 in), both spread over about 10 days. Additionally, April is characterized by higher humidity at 83%, whereas August sees a more comfortable level at 69%. For more detailed insights into August weather, visit Decorah weather in August.
In comparing the weather of April and September, April generally experiences cooler temperatures with a minimum of -11°C (13°F) and an average of 7°C (45°F), while September enjoys milder conditions, featuring a minimum temperature of 2°C (35°F) and an average of 18°C (65°F). The maximum temperature in April can reach up to 26°C (80°F), but September boasts even warmer highs, peaking at 32°C (90°F). Precipitation is also a notable difference; April sees about 80 mm (3.2 in) of rainfall over 10 days, whereas September is wetter, with 123 mm (4.8 in) over the same number of days. Additionally, April has a higher humidity level of 83%, compared to September's 74%. For more detailed insights, check Decorah weather in September.
April and October present distinct yet comparable weather patterns, each representing the transition between seasons. In April, temperatures range from a chilly -11°C (13°F) at night to a mild 26°C (80°F) during the day, with an average of 7°C (45°F). The month typically sees 80 mm (3.2 in) of precipitation over about 10 days, accompanied by high humidity levels at around 83%. On the other hand, October experiences slightly warmer conditions, with a minimum of -7°C (20°F) and a maximum of 30°C (86°F), averaging 10°C (50°F). However, it also has increased precipitation, reaching 133 mm (5.2 in) across 11 days, with humidity slightly lower at 79%. For a more detailed look at weather patterns in October, check out Decorah weather in October.
April and November present contrasting weather experiences. In April, temperatures can range from a chilly -11°C (13°F) to a pleasant 26°C (80°F), with an average of 7°C (45°F), while November's temperatures are generally cooler, with a minimum of -16°C (3°F) and a maximum of 22°C (72°F), averaging around 2°C (35°F). April sees more rainfall, with total precipitation of 80 mm (3.2 in) over about 10 days, compared to November, which has 53 mm (2.1 in) of precipitation over 7 days. Additionally, humidity is slightly higher in November at 88%, compared to April's 83%. For more detailed insights, you can refer to Decorah weather in November.
April and December present stark contrasts in weather conditions. In April, temperatures can range from a chilly -11°C (13°F) at night to a warm 26°C (80°F) during the day, resulting in an average temperature of about 7°C (45°F). The month sees roughly 80 mm (3.2 in) of precipitation over 10 days, accompanied by high humidity at 83%. In contrast, December is significantly colder, with temperatures plummeting to a minimum of -23°C (-9°F) and a maximum of only 20°C (68°F), averaging around -3°C (28°F). This colder month experiences considerably less precipitation, totaling 38 mm (1.5 in) over just 6 days, while maintaining a slightly lower humidity level of 82%. For a deeper dive into December conditions, you can check out Decorah weather in December.
April in Decorah marks a distinct transition from the chilly grip of winter to the gentle warmth of spring. With temperatures gradually rising and an increase in precipitation, the month showcases a blend of cool mornings and mild afternoons, bringing a refreshing vibrancy to the landscape. The higher humidity levels contribute to the lush scenery, while the frequent rain nourishes the budding flora, setting the stage for a blooming season ahead. Unlike the harsher winter months, April's weather captures the essence of renewal and anticipation. For a deeper dive into the climatic patterns that shape Decorah, visit Decorah Climate.