April Weather in Sisters, United States

Last updated: February 24, 2025

April in Sisters, United States, showcases a remarkable contrast in weather, characterized by maximum temperatures reaching 28°C (83°F), a cool average of 7°C (45°F), and a chilly minimum that dips to -8°C (17°F). This month brings about 67 mm (2.6 in) of precipitation over 11 days, resulting in a notably high humidity level of 85%. The fluctuation in temperatures combined with frequent rain creates a dynamic spring atmosphere, making Sisters a unique destination for those who appreciate the beauty of changing seasons.

April Temperature in Sisters

In April, the weather in Sisters, United States, begins to showcase a distinct transition from the chill of winter to the warmth of spring. With minimum temperatures rising to -8°C (17°F), the town experiences a refreshing shift, while averages climbing to 7°C (45°F) hint at the promise of milder days ahead. The maximum temperatures can reach a pleasant 28°C (83°F), making it an ideal time for outdoor activities and blooming flowers. This month marks a significant departure from the harsher conditions of earlier months, setting the stage for the summertime warmth that will soon envelop the region. Overall, April embodies a perfect blend of cool and warm, creating an inviting atmosphere that encourages exploration and celebration of nature's awakening.

April Weather in Sisters: Daily Temperature Highs, Lows, and Averages

The chart illustrates April temperature patterns in Sisters, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec323337445361686859463833
Data source: Temperature data for Sisters 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 Sisters

In April, Sisters, United States, experiences a slight uptick in precipitation, with 67 mm (2.6 in) of rain recorded over 11 days. This amount mirrors the preceding month of March, indicating a consistency in the early spring season. As winter gives way to spring, April's rainfall plays a crucial role in nurturing the blooming landscape, maintaining a transition from the wet, heavier precipitation seen in the winter months of January and February. While precipitation begins to wane in May, April serves as a pivotal month, balancing rainfall and fostering the region’s dynamic ecosystems before the drier summer months approach.

April Precipitation Trends in Sisters

The chart displays monthly precipitation patterns in Sisters, 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.
JanFebMarAprMayJunJulAugSepOctNovDec93109666737226836437493
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Sisters

In April, humidity in Sisters, United States, settles at 85%, marking a slight decrease from the higher levels of the preceding months. This gradual drop reflects the transition into spring, as the region begins to shake off the chill of winter and embraces warmer days. Notably, this trend continues into May, where humidity dips further to 80%, indicating a steady movement towards a drier summer. As we contrast this with the high humidity levels of January and February, both at 86% and 87% respectively, it's clear that April serves as a pivotal month in the shift from the colder, wetter winter months to the drier conditions typical of summer.

April Average Humidity in Sisters

This chart illustrates the average monthly humidity levels in Sisters, 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.
JanFebMarAprMayJunJulAugSepOctNovDec86%87%86%85%80%82%79%63%59%78%88%88%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Sisters

As April rolls into Sisters, Oregon, the UV Index soars to 8, marking a shift into the very high exposure category with a burn time of just 15 minutes. This dramatic increase from March's Index of 6 indicates that sun protection becomes increasingly crucial as the days grow longer and sunnier. The trend continues into May with an even more intense Index of 11, underscoring the arrival of summer-like conditions. The upward trajectory of UV levels emphasizes the importance of staying vigilant against sun damage, particularly as we enjoy the beautiful spring landscapes. To stay informed and prepared, check out more on the Sisters UV Index.

Maximum UV Index Levels in Sisters for April

The chart shows the monthly maximum UV Index (UVI) for Sisters 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.
JanFebMarAprMayJunJulAugSepOctNovDec346811101098632
Data source: Sisters 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 Sisters

April in Sisters, United States, ushers in a delightful increase in sunshine, with 265 hours of golden rays gracing the skies. This vibrant month marks a significant leap from March's 236 hours, as spring's warmth begins to take hold, brightening the landscape and uplifting spirits. The trend continues upward into May, where sunlight peaks at 336 hours, heralding summer's approach. Notably, April's sunny disposition reflects a broader pattern of increasing daylight hours as the year progresses, culminating in the sun-drenched days of July, which boasts an impressive 409 hours. This seasonal transition not only enhances outdoor activities but also enriches the community's connection with nature, making April a cherished prelude to the sun-soaked months ahead.

Monthly Sunshine Duration in Sisters: April Highlighted

The April sunshine duration represents the total number of hours Sisters 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.
JanFebMarAprMayJunJulAugSepOctNovDec108h146h236h265h336h365h409h367h293h242h168h144h
Data source: Sisters April Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Sisters During April

As spring unfolds in Sisters, United States, the likelihood of sunny weather sees a remarkable increase in April, reaching an impressive 59% after the more subdued figures of the earlier months. March sets the stage with a 46% chance of sunshine, but by April, residents and visitors alike can look forward to brighter days as the sun starts to take center stage. This trend continues into the summer months, with July boasting a striking 83% chance of sun, while April serves as a delightful harbinger of the sunny weather to come. Overall, April marks a significant transition into sunnier times, making it a fantastic month for outdoor activities and enjoying the natural beauty of the region.

Percentage of Sunny Days in April in Sisters

The chart illustrates the percentage of sunny days in Sisters 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 Sisters experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec21%23%46%59%49%64%83%75%71%37%25%17%
Data source: Sisters April chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Sisters in April

As spring unfolds in Sisters, United States, April brings a noticeable increase in daylight duration, stretching to a refreshing 13 hours. This marks a significant leap from the 11 hours experienced in March, highlighting the transition from winter’s shorter days to the longer, sunnier hours of the warmer months. As the year progresses, daylight continues to expand, reaching its peak in June with 15 hours of sunlight, before gradually tapering off in the late summer. This upward trend in daylight not only invigorates the natural landscape but also invites residents to embrace outdoor activities and connect with the blossoming beauty of the season.

Average Daylight Hours in Sisters for April

The chart illustrates the variation in daylight duration in Sisters throughout the year, with April highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 16m10h 28m11h 57m13h 29m14h 48m15h 26m15h 5m13h 55m12h 27m10h 55m9h 35m8h 53m
Data source: Sisters daylight hours, calculated by summing the hours between sunrise and sunset for each day.

April Winds in Sisters

In April, Sisters, United States, experiences a refreshing breeze with an average wind speed of 2.7 m/s (6 mph). This slight uptick from March's 2.5 m/s reflects a seasonal shift as the region begins to shake off the chill of winter. Notably, April maintains a wind speed comparable to February and December, while remaining generally consistent with the preceding month. As spring unfolds, the wind’s gentle presence enhances the vibrant landscapes, inviting outdoor activities and a renewed connection to nature. Looking ahead, the winds settle into a steady rhythm as they transition into the warm summer months.

Average April Wind Speed in Sisters

The chart displays monthly wind speed patterns in Sisters, 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.
JanFebMarAprMayJunJulAugSepOctNovDec2.43.22.52.7 m/s2.52.42.22.32.12.42.32.7
Data source: Sisters April wind data, generated using information from the Copernicus Climate Change Service.

How April Weather in Sisters Compares to Other Months

The weather in Sisters 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 Sisters and find detailed weather information for every month.

In January, the weather is notably colder, with temperatures ranging from a minimum of -24°C (-11°F) to a maximum of 14°C (57°F) and an average temperature of 0°C (33°F). This month also experiences relatively high humidity at 86% and more precipitation, totaling 93 mm (3.7 in) over about 13 days. In contrast, April sees a significant warming trend, with temperatures that vary from -8°C (17°F) to a much warmer maximum of 28°C (83°F) and an average of 7°C (45°F). Precipitation in April is slightly lower at 67 mm (2.6 in) over 11 days, while humidity remains high at 85%. For more detailed insights about the weather in January, you can visit Sisters weather in January.

April's weather stands in stark contrast to February's chill, with temperatures ranging from a minimum of -8°C (17°F) to a maximum of 28°C (83°F) and an average of 7°C (45°F). In comparison, February experiences much colder temperatures, featuring a minimum of -22°C (-7°F), an average of 0°C (33°F), and a maximum of 17°C (62°F). While February has more precipitation at 109 mm (4.3 in) over 15 days, April also sees considerable moisture with 67 mm (2.6 in) across 11 days. Both months have high humidity, but February's 87% slightly exceeds April's 85%. For a closer look at what to expect in February, check out Sisters weather in February.

April's weather shows a significant warming trend compared to March, with average temperatures rising from 3°C (38°F) in March to 7°C (45°F) in April. The maximum temperature in April can reach as high as 28°C (83°F), a stark contrast to March's maximum of 19°C (67°F). Both months experience similar levels of precipitation, with April seeing 67 mm (2.6 in) over 11 days and March slightly higher at 66 mm (2.6 in) over 13 days. Humidity levels remain consistent, with April at 85% and March at 86%. For a more detailed comparison of March weather, you can visit Sisters weather in March.

April and May showcase a notable transition in weather patterns. April experiences a broader temperature range, with a minimum of -8°C (17°F) and a maximum of 28°C (83°F), resulting in an average temperature of 7°C (45°F). In contrast, May offers milder conditions, with temperatures ranging from -5°C (23°F) to a maximum of 31°C (88°F), leading to a warmer average of 12°C (53°F). Precipitation also decreases in May to 37 mm (1.5 in) over 8 days, compared to April's 67 mm (2.6 in) over 11 days. Additionally, May has slightly lower humidity at 80%, down from April's 85%. For more insights, you can check out Sisters weather in May.

April weather is characterized by a wider temperature range, with minimums dropping to -8°C (17°F) and maximums peaking at 28°C (83°F). This month also receives a fair amount of precipitation, averaging 67 mm (2.6 in) over 11 days, contributing to a higher humidity level of 85%. In contrast, June features milder temperatures, with minimums at 0°C (32°F) and average highs of 42°C (108°F). Rainfall significantly decreases to 22 mm (0.9 in) over just 6 days, and humidity levels drop slightly to 82%. Overall, June offers warmer conditions and less precipitation compared to the transitional month of April. For more detailed information, you can explore Sisters weather in June.

April and July exhibit notable differences in weather conditions. In April, temperatures range from a chilly -8°C (17°F) at night to a pleasant 28°C (83°F) during the day, with an average temperature of 7°C (45°F). The month sees a significant amount of precipitation, totaling 67 mm (2.6 in) over approximately 11 days, and humidity levels are quite high at 85%. In contrast, July boasts warmer temperatures, with a minimum of 0°C (33°F), an average of 20°C (69°F), and a maximum reaching up to 37°C (99°F). Notably, July experiences much lower rainfall, accumulating only 6 mm (0.3 in) across just 1 day, and humidity drops to 78%. For more details on July weather, you can visit Sisters weather in July.

April weather can be quite variable, with temperatures ranging from a chilly -8°C (17°F) at night to a pleasant 28°C (83°F) during the day, averaging around 7°C (45°F). This month typically experiences higher humidity at 85% and sees 67 mm (2.6 in) of precipitation over approximately 11 days, contributing to its often damp conditions. In contrast, August boasts warmer and more stable temperatures, with minimums of 0°C (33°F), an average of 20°C (68°F), and peaks reaching up to 37°C (100°F). With significantly less rainfall, just 8 mm (0.3 in) across 2 days, humidity levels drop to 62%, making it a drier and more comfortable month for outdoor activities. For more insights on August weather, you can check this link: Sisters weather in August.

When comparing the weather in April and September, notable differences emerge. April typically sees temperatures ranging from a chilly -8°C (17°F) at night to a warm 28°C (83°F) during the day, with an average temperature of 7°C (45°F). The month is quite humid, with an average humidity of 85% and 67 mm (2.6 in) of precipitation spread over 11 days.

In contrast, September offers a milder experience with minimum temperatures around -3°C (26°F) and a maximum reaching up to 37°C (99°F), averaging 15°C (59°F) overall. It experiences significantly less rainfall, with only 36 mm (1.4 in) over just 5 days and lower humidity at 59%. The drier and warmer September weather, highlighted in Sisters weather in September, is a welcome change from the more unpredictable April climate.

April and October exhibit contrasting weather characteristics, reflecting the transition between spring and autumn. In April, temperatures range from a minimum of -8°C (17°F) to a maximum of 28°C (83°F), with an average of 7°C (45°F). The month sees about 67 mm (2.6 in) of precipitation over 11 days, coupled with a high humidity level of 85%. In contrast, October experiences slightly cooler temperatures, with a minimum of -9°C (16°F) and a maximum of 30°C (87°F), averaging 8°C (47°F). Rainfall is lighter at 43 mm (1.7 in) spread over 7 days, accompanied by a lower humidity of 78%. For a more detailed look at weather conditions during this time, you can check Sisters weather in October.

April and November present contrasting weather experiences. In April, temperatures range from a chilly minimum of -8°C (17°F) to a pleasant maximum of 28°C (83°F), with an average of 7°C (45°F). The month experiences about 67 mm (2.6 in) of precipitation over 11 days, and humidity levels sit at a relatively high 85%.

In contrast, November is colder overall, with temperatures dropping to a minimum of -18°C (0°F) and an average of 3°C (38°F), peaking at a maximum of 22°C (71°F). This month sees increased precipitation at 74 mm (2.9 in) over 11 days, accompanied by slightly higher humidity at 88%. You can learn more about the specifics of the weather in this month by visiting Sisters weather in November.

April and December present contrasting weather conditions, with April showcasing a more mild and variable climate. In April, temperatures range from a chilly minimum of -8°C (17°F) to a warm maximum of 28°C (83°F), with an average of 7°C (45°F). The month experiences about 67 mm (2.6 in) of precipitation over approximately 11 days and maintains a humidity level of 85%.

In stark contrast, December brings colder temperatures, with a minimum of -19°C (-2°F) and a maximum of only 18°C (65°F), resulting in an average temperature of 0°C (33°F). The month sees an increase in precipitation to 93 mm (3.7 in) spread over 14 days, accompanied by a slightly higher humidity level of 88%. For a closer look at what to expect, check out Sisters weather in December.

Compare Sisters's Climate with Cities Worldwide

Conclusion: What to Expect From April Weather in Sisters

April in Sisters is a month of transition, where the lingering chill of winter meets the promise of spring. While temperatures begin to rise, offering a maximum warmth that hints at the summer ahead, the average and minimum temperatures still remind us that cooler days are not yet behind us. The frequent rain, with precipitation occurring on nearly a third of the month, underscores the unpredictability of this time of year. Humidity levels peak at 85%, creating a fresh, invigorating atmosphere that contrasts sharply with the drier months to come. As the landscape awakens with lush greenery, April's weather truly sets the stage for the vibrant seasons just around the corner. For more detailed information about the climate in Sisters, be sure to check out Sisters Climate.