April Weather in Sister Bay, United States

Last updated: February 24, 2025

In Sister Bay, United States, April presents a unique blend of chilly temperatures and significant precipitation. The maximum temperature hovers around 9°C (48°F), with an average of 2°C (36°F) and an occasional low reaching -7°C (19°F). This month typically experiences 88 mm (3.5 in) of moisture over 11 days, resulting in an 87% humidity level that adds a damp chill to the atmosphere. As spring unfolds, residents and visitors alike can expect fluctuating conditions that are characteristic of this transitional period, offering both beauty and unpredictability in the weather.

April Temperature in Sister Bay

As spring unfolds in Sister Bay, April marks a notable shift in temperatures, transitioning from the deep chill of winter to a more inviting atmosphere. With minimums around -7°C (19°F) and average highs reaching 9°C (48°F), the month offers a refreshing respite from the frigid conditions of January through March. The gradual rise in temperatures is indicative of the warming trend, with average highs escalating from -1°C (31°F) in March to 9°C (48°F) by late April, hinting that warmer days are on the horizon. This month serves as a bridge to the milder climes of May and June, encouraging both residents and visitors to embrace the awakening beauty of the season.

April Weather in Sister Bay: Daily Temperature Highs, Lows, and Averages

The chart illustrates April temperature patterns in Sister Bay, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec252430364355676862523931
Data source: Temperature data for Sister Bay generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

April Precipitation in Sister Bay

In April, Sister Bay experiences a notable peak in precipitation, with 88 mm (3.5 in) of rainfall registered across 11 days. This marks an increase from the previous months, as the region transitions from the drier winter months to the wetter spring season. April's precipitation not only surpasses that of March (61 mm), but it also sets the stage for May's similar amounts (86 mm), suggesting a sustained pattern of substantial rainfall. The moderate number of rainy days indicates that while the showers contribute significantly to the monthly total, they are often brief, keeping the landscape vibrant and lush as nature awakens from winter slumber.

April Precipitation Trends in Sister Bay

The chart displays monthly precipitation patterns in Sister Bay, with values for each month alongside April's data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how April's conditions compare to those of other months.
JanFebMarAprMayJunJulAugSepOctNovDec4858618886917578741086769
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Sister Bay

April in Sister Bay brings a slight drop in humidity, matching the 87% seen in March. This trend showcases a gradual transition as spring unfolds, offering a hint of relief from the winter's heavier, moisture-laden air. Following this, May continues the trend downward with humidity decreasing to 82%. The overall pattern indicates a general decline in humidity levels as the warmer months approach, creating a refreshing environment that enhances outdoor enjoyment. As the region moves towards summer, residents and visitors can anticipate more comfortable conditions, underscoring the charm of springtime in Sister Bay.

April Average Humidity in Sister Bay

This chart illustrates the average monthly humidity levels in Sister Bay, with April's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how April's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec91%91%87%87%82%79%76%76%79%83%86%87%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Sister Bay

As April arrives in Sister Bay, the UV Index climbs to a notable 7, marking a shift into the high exposure category with a burn time of just 25 minutes. This upward trend reflects a growing intensity of sunlight as the region moves away from the cooler winter months. Compared to January’s low UV Index of 2, April signals a time when outdoor enthusiasts should take precautions against sun damage. Looking ahead, May further escalates to a very high UV Index of 9, emphasizing the need for sun safety measures. With such fluctuations in UV levels throughout the year, staying informed is crucial for enjoying the sunny days safely. For more detailed information, visit Sister Bay UV Index.

Maximum UV Index Levels in Sister Bay for April

The chart shows the monthly maximum UV Index (UVI) for Sister Bay in April, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec245799997532
Data source: Sister Bay April UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

April Sunshine in Sister Bay

As April descends upon Sister Bay, the arrival of spring brings a radiant expansion of sunlight, with 250 hours illuminating the month. This increase marks a subtle but significant uptick from March's 248 hours, setting the tone for the warm days ahead. As the year progresses, it becomes clear that longer daylight hours are a hallmark of summer, with May and June showcasing robust growth with 310 and 339 hours respectively. The trend continues into July, peaking at 364 hours, before gradually tapering off in the subsequent months. Thus, April serves as a vibrant bridge from the chilly winter months to the sun-drenched summer, enticing residents and visitors alike to embrace the beauty of the season.

Monthly Sunshine Duration in Sister Bay: April Highlighted

The April sunshine duration represents the total number of hours Sister Bay experiences direct sunlight during the month of April, excluding cloudy or obstructed periods. This chart compares the sunshine duration of April with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec114h195h248h250h310h339h364h334h279h213h167h142h
Data source: Sister Bay April Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Sister Bay During April

April in Sister Bay, United States, offers a notable transition in weather, as the likelihood of sunny days rises to 37%. While this represents a dip from the warmer months ahead, it reflects a significant increase from the dreary winter, with March boasting only 45% sunny chances. This gradual upward trend continues into May, climbing to 46%, making it an appealing time for visitors eager to shake off winter's gloom. As summer approaches, the probability of sunshine peaks in July at an impressive 61%, underscoring the region's delightful seasonal shift. Overall, April stands as a promising contender for those looking to bask in the emerging spring sun, setting the stage for the more sun-drenched days to come.

Percentage of Sunny Days in April in Sister Bay

The chart illustrates the percentage of sunny days in Sister Bay throughout the year, with April highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Sister Bay experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec19%24%45%37%46%43%61%57%55%38%38%21%
Data source: Sister Bay April chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Sister Bay in April

As April unfolds in Sister Bay, the days start to noticeably lengthen, providing a refreshing boost of 13 hours of daylight. This marks a significant leap from the 11 hours seen in March, heralding the approach of warmer months. The increase in light not only brightens the landscape but also invigorates the local community, encouraging outdoor activities and exploration. As spring takes hold, daylight will continue to extend, reaching 14 hours in May and peaking at 15 hours in the summer months of June and July. This gradual transition showcases a clear trend towards longer, sunlit days, inviting residents and visitors alike to bask in the beauty of Sister Bay's evolving seasonal landscape.

Average Daylight Hours in Sister Bay for April

The chart illustrates the variation in daylight duration in Sister Bay throughout the year, with April highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 11m10h 24m11h 57m13h 32m14h 53m15h 33m15h 11m13h 59m12h 28m10h 53m9h 30m8h 47m
Data source: Sister Bay daylight hours, calculated by summing the hours between sunrise and sunset for each day.

April Winds in Sister Bay

In Sister Bay, April ushers in a gentle shift in the winds, with an average speed of 6.2 m/s (14 mph), noticeably lower than the preceding months. This decline marks a transition from the invigorating gusts of winter, which peak in March at 7.7 m/s (17 mph), to a more moderate breeze that heralds the arrival of spring. Interestingly, April's winds are matched by May, suggesting a stable yet tranquil atmosphere as the region awakens from its winter slumber. As temperatures rise and nature flourishes, the winds gradually taper off further into the summer months, hinting at a serene and inviting environment for those looking to embrace the charm of this coastal haven.

Average April Wind Speed in Sister Bay

The chart displays monthly wind speed patterns in Sister Bay, with values for each month shown alongside April's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how April's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec7.07.37.76.2 m/s6.25.84.95.86.76.38.68.7
Data source: Sister Bay April wind data, generated using information from the Copernicus Climate Change Service.

How April Weather in Sister Bay Compares to Other Months

The weather in Sister Bay 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 Sister Bay and find detailed weather information for every month.

April and January weather in Sister Bay reflect a significant transition from winter to spring. In January, temperatures plummet with a minimum of -18°C (1°F) and an average of -4°C (25°F), making it one of the coldest months, while April sees a milder minimum of -7°C (19°F) and an average of 2°C (36°F). Precipitation is higher in April at 88 mm (3.5 in) over 11 days, compared to January’s 48 mm (1.9 in) across 9 days, highlighting April's wetter conditions as the snow melts and spring rains begin. Humidity is slightly lower in April at 87%, versus January's 91%, offering a subtle hint of warming as the season changes. For more about January weather in Sister Bay, visit Sister Bay weather in January.

When comparing the weather in February and April, significant differences emerge. February experiences much colder temperatures, with minimums reaching -19°C (-2°F) and an average of -4°C (24°F), while April sees milder conditions, with minimums of -7°C (19°F) and an average temperature of 2°C (36°F). February also has less precipitation at 57 mm (2.3 in), compared to April's 88 mm (3.5 in), although both months average 11 days of precipitation. Additionally, humidity levels are slightly higher in February at 91%, compared to April's 87%. For more details, you can check Sister Bay weather in February.

In comparing the weather of March and April, we see a notable transition as spring approaches. April's temperatures range from a minimum of -7°C (19°F) to a maximum of 9°C (48°F), providing a more moderate climate with an average of 2°C (36°F), whereas March is significantly colder, with temperatures dipping to a minimum of -19°C (-1°F) and averaging -1°C (31°F). Precipitation also increases from 61 mm (2.4 in) over 9 days in March to 88 mm (3.5 in) over 11 days in April, indicating a wetter start to the spring season. Both months share a consistent humidity level of 87%, contributing to the damp feel common in early spring. For a more detailed look at March conditions, you can explore Sister Bay weather in March.

In April, the weather tends to be chilly with temperatures ranging from a minimum of -7°C (19°F) to a maximum of 9°C (48°F), averaging around 2°C (36°F). During this month, there is significant precipitation, totaling 88 mm (3.5 inches) over 11 days, and the humidity levels are relatively high at 87%. In contrast, May brings a noticeable warming trend, with temperatures ranging from a minimum of -1°C (31°F) to a maximum of 15°C (59°F) and an average temperature of 6°C (44°F). Precipitation slightly decreases to 86 mm (3.4 inches) over 10 days, accompanied by a drop in humidity to 82%. For further details on the weather in May, you can check Sister Bay weather in May.

April and June exhibit significant differences in weather patterns. In April, temperatures are quite cold with a minimum of -7°C (19°F) and an average of only 2°C (36°F), while in June, the temperatures rise considerably, with a minimum of 5°C (41°F) and an average of 13°C (55°F). April also tends to be wetter, receiving 88 mm (3.5 in) of precipitation compared to June's slightly higher 91 mm (3.6 in), although both months experience precipitation on 11 days. Additionally, April is more humid with an average humidity of 87%, while June sees a reduction to 79%. For a closer look at conditions during June, you can visit Sister Bay weather in June.

April and July present strikingly different weather patterns. In April, temperatures range from a chilly minimum of -7°C (19°F) to a maximum of 9°C (48°F), with an average of just 2°C (36°F). The month sees substantial precipitation, totaling 88 mm (3.5 in) across 11 rainy days, and high humidity at 87%. In contrast, July offers much warmer conditions, with temperatures varying from a minimum of 12°C (54°F) to a pleasant maximum of 26°C (79°F), averaging around 19°C (67°F). While July does experience some rainfall, it is less than in April, with a total of 74 mm (2.9 in) over 10 days and lower humidity at 75%. For more insights on July conditions, visit Sister Bay weather in July.

April weather presents a stark contrast to that of August, with significantly cooler temperatures ranging from a minimum of -7°C (19°F) to a maximum of 9°C (48°F) and an average of just 2°C (36°F). This month also experiences more precipitation, with 88 mm (3.5 in) falling over 11 days and a high humidity level of 87%. In contrast, August offers much warmer temperatures, with minimums around 15°C (58°F) and maximums reaching 25°C (78°F), averaging a comfortable 20°C (68°F). The precipitation in August is slightly less at 78 mm (3.1 in), occurring over 9 days, and the humidity drops to 76%. For a closer look at August weather specifics, you can refer to Sister Bay weather in August.

April and September showcase contrasting weather patterns. In April, temperatures range from a chilly -7°C (19°F) at night to a modest max of 9°C (48°F), with an average of just 2°C (36°F). The month is quite damp, receiving 88 mm (3.5 in) of precipitation over approximately 11 days and boasting a high humidity level of 87%. In contrast, September offers a much milder climate, with temperatures starting at a minimum of 7°C (45°F) and reaching a pleasant average of 17°C (63°F) and a maximum of 23°C (74°F). This month experiences less rainfall, totaling 74 mm (2.9 in) over about 10 days, coupled with slightly lower humidity at 79%. For a more detailed look at September weather, you can refer to Sister Bay weather in September.

In comparing the weather of April and October, distinct differences emerge. April tends to be colder, with average temperatures hovering around 2°C (36°F) and reaching a maximum of only 9°C (48°F). Additionally, it experiences higher humidity levels at 87% and notable precipitation of 88 mm (3.5 in) over about 11 days. In contrast, October showcases a milder climate, with average temperatures reaching 11°C (52°F) and a maximum of 20°C (68°F). Although October has a bit more precipitation at 108 mm (4.2 in) over 13 days, the humidity is slightly lower at 83%. For more details on October conditions, take a look at Sister Bay weather in October.

In April, temperatures often range from a minimum of -7°C (19°F) to a maximum of 9°C (48°F), with an average of 2°C (36°F), while November experiences slightly milder conditions with minimums at -6°C (21°F) and maximums up to 14°C (57°F), averaging around 4°C (39°F). Precipitation is higher in April, totaling 88 mm (3.5 in) over about 11 days, compared to November's 66 mm (2.6 in) spread over 10 days. Humidity levels are quite similar, with April at 87% and November at 86%. For more detailed information, you can check Sister Bay weather in November.

In April, the weather begins to warm up as temperatures range from a minimum of -7°C (19°F) to a maximum of 9°C (48°F), with an average of 2°C (36°F). The month sees about 88 mm (3.5 in) of precipitation over 11 days, and humidity levels remain high at 87%. In contrast, December brings colder conditions, with temperatures dipping even lower, ranging from -17°C (1°F) to a maximum of 11°C (52°F), and an average temperature of -1°C (31°F). Precipitation in December is slightly less at 69 mm (2.7 in), also spread over 11 days, while humidity remains constant at 87%. For more information on the specific weather conditions, visit Sister Bay weather in December.

Compare Sister Bay's Climate with Cities Worldwide

Conclusion: What to Expect From April Weather in Sister Bay

As April arrives in Sister Bay, the weather takes a noticeable turn, marking a transition from the harshness of winter to the promise of spring. With cooler temperatures and increased humidity, April often feels brisk, contrasting sharply with the milder conditions that follow in the months ahead. While rainfall is frequent, contributing to a total precipitation of 88 mm, these April showers play a crucial role in nurturing the emerging landscape. This month serves as a reminder of nature's resilience, setting the stage for the vibrant growth to come. For a deeper dive into the climate patterns throughout the year, check out Sister Bay Climate.