Last updated: February 24, 2025
May in Sisters, United States, showcases a vibrant transition to summer with maximum temperatures reaching an enjoyable 31°C (88°F), while the average temperature settles at a comfortable 12°C (53°F). However, the month may surprise with cooling dips, as minimum temperatures can drop to -5°C (23°F). Nature brings its own rhythm with 37 mm (1.5 in) of precipitation over 8 days, contributing to an abundance of lush greenery. With a notable humidity level of 80%, the atmosphere feels rich and refreshing, making May a delightful time to experience the unique charm of Sisters.
In May, the temperatures in Sisters, United States, mark a delightful turn towards warmth after the chill of winter, with minimums reaching -5°C (23°F) and average daytime highs soaring to 31°C (88°F). This month serves as a bridge between the lingering coolness of early spring and the heat of summer, as average temperatures rise to 12°C (53°F). Notably, May experiences a significant leap from the colder months preceding it, showcasing a remarkable increase in both minimum and maximum temperatures. As a result, the region begins to embrace the vibrancy of blooming flora and outdoor activities, inviting residents and visitors alike to enjoy the revitalizing embrace of spring's finale.
In Sisters, United States, the month of May typically witnesses a noticeable reduction in precipitation, with an average of just 37 mm (1.5 in), a stark decline compared to the wetter months earlier in the year. This drop in overall rainfall is reflected in the number of precipitation days, which averages only 8 days in May, allowing for more sunshine and outdoor activities as spring transitions into summer. The trend shows that while winter and early spring months bring heavier and more frequent showers, May marks the beginning of a drier season, paving the way for the warm and generally arid conditions that follow in June and July. This shift not only highlights the evolving climate of the region but also creates an inviting atmosphere for visitors eager to explore the stunning landscapes of Sisters.
In May, humidity levels in Sisters, United States, begin to show a noticeable decline, dipping to 80% after several months of higher percentages. This slight decrease from the preceding months reflects the transition towards the drier summer season, as humidity has consistently hovered between 85% and 87% from January to April. Looking ahead, the trend continues with June's humidity rising slightly to 82% before further decreasing through the summer months, reaching a low of 62% in August. Thus, while May marks a pivotal point in the gradual shift from moisture-laden spring to a more arid summer, the overall climate remains relatively humid compared to the latter half of the year.
May heralds a significant leap in UV exposure in Sisters, United States, with a soaring UV Index of 11, categorizing it as extreme. This marks a stark contrast to the earlier months, where indices were moderate to very high; for instance, April’s index was 8, with a burn time of just 15 minutes. As the sun's intensity peaks in May, the recommended burn time plummets to just 10 minutes, urging residents and visitors alike to take protective measures seriously. As summer approaches, the trend reveals a clear escalation in UV risks, making it essential to stay vigilant and informed. For more details, check out the comprehensive insights at Sisters UV Index.
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As spring gives way to summer, May shines brightly in Sisters, United States, with an impressive 336 hours of sunlight. This marks a significant increase from the previous months, showcasing a gradual upward trend in sunshine hours that began in January with just 108 hours. After a steady ascent through early spring, where April offers 265 hours, the transition into May reveals the true brightness of the season, paving the way for June's peak at 365 hours. This progression illustrates not only the welcoming warmth of late spring but also sets the stage for the sun-drenched days of summer, creating an inviting atmosphere for outdoor activities and revitalizing the spirit of the community.
As spring unfolds in Sisters, United States, the chance of sunny weather reaches a promising 49% in May, showcasing a significant uptick from the preceding months. This shift marks a transition from the cool, overcast days of early winter and spring, with January's mere 21% optimism gradually climbing to the more favorable 59% in April. The trend continues as summer approaches, with a leap to 64% in June, indicating that May acts as a bridge to the sun-drenched days of summer. Although May may not hold the highest likelihood of sunny weather compared to the heights of July and August, it certainly offers a refreshing promise of warmth and sunshine that beckons outdoor enthusiasts and nature lovers alike.
As spring transitions into summer, the daylight duration in Sisters, United States, showcases a remarkable upward trend. Starting with 9 hours in January, daylight increases steadily to 14 hours by May, inviting longer afternoons and more opportunities for outdoor activities. This upward momentum reaches its peak in June and July, with both months basking in an impressive 15 hours of daylight. However, the days begin to shorten again as summer wanes, dipping to 13 hours in August and gradually descending to 8 hours by December. This cyclical rhythm of increasing and decreasing daylight not only mirrors the changing seasons but also shapes the lifestyle and activities of those living in Sisters, illustrating the region's vibrant connection to the natural world.
In Sisters, United States, the average wind speeds in May hold steady at 2.5 m/s (6 mph), mirroring the calmness of the preceding months. As spring reaches its peak, the winds maintain a gentle embrace, transitioning smoothly from April's 2.7 m/s. This trend of relatively low wind speeds continues into the warmer months, with June and July seeing only slight decreases. The overall pattern suggests a serene atmosphere, perfect for outdoor activities, as the wind graces the landscape with just enough presence to hint at the vibrant energy of summer on the horizon. As the year unfolds, the gentle breezes serve as a reminder of the tranquil beauty that characterizes Sisters, from the blossoming spring to the sun-soaked days of summer.
The weather in Sisters changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of May'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.
May and January present stark contrasts in weather. In May, temperatures range from a chilly -5°C (23°F) at night to a warm 31°C (88°F) during the day, with an average of 12°C (53°F). The month experiences a moderate amount of precipitation at 37 mm (1.5 in) over about 8 days, and humidity hovers around 80%. In contrast, January is much colder, with minimum temperatures plummeting to -24°C (-11°F) and a maximum of only 14°C (57°F), averaging 0°C (33°F). This month is also wetter, receiving 93 mm (3.7 in) of precipitation over 13 days, with even higher humidity at 86%. For a more detailed look at January's weather, visit Sisters weather in January.
In comparing the weather of May and February, it's clear that May offers a much milder climate. With average temperatures around 12°C (53°F) and high peaks reaching up to 31°C (88°F), May presents a stark contrast to February's chilly average of 0°C (33°F) and maximum temperature of just 17°C (62°F). February, known for its colder temperatures, experiences lower minimums, dropping as low as -22°C (-7°F). Additionally, February sees significantly more precipitation at 109 mm (4.3 in) over 15 days, compared to May's 37 mm (1.5 in) over just 8 days, contributing to a higher humidity level of 87% versus May's 80%. For more details on February weather specific to Sisters, you can visit Sisters weather in February.
In comparing the weather between March and May, we see a significant shift in temperatures and precipitation patterns. March experiences much colder temperatures, with a minimum of -15°C (5°F) and an average of 3°C (38°F), while May boasts a much warmer range with a minimum of -5°C (23°F) and an average of 12°C (53°F). Precipitation is also higher in March, with 66 mm (2.6 in) over 13 days compared to May's 37 mm (1.5 in) over 8 days, suggesting that March is often a wetter month. Additionally, humidity levels in March are slightly higher at 86%, compared to 80% in May. For more specific details on the weather in March, you can visit Sisters weather in March.
May generally experiences milder temperatures compared to April, with an average of 12°C (53°F) rising to a maximum of 31°C (88°F) versus April's average of 7°C (45°F) and maximum of 28°C (83°F). However, May also sees slightly less precipitation, totaling 37 mm (1.5 in) over 8 days, compared to April's 67 mm (2.6 in) over 11 days. The humidity remains fairly consistent, with May at 80% and April slightly higher at 85%. For more detailed insights into April's weather, you can check out Sisters weather in April.
In May, the weather exhibits a wider temperature range, with minimums dipping to -5°C (23°F) and maximums reaching 31°C (88°F), while averaging around 12°C (53°F). The month experiences 37 mm (1.5 in) of precipitation over 8 days, coupled with high humidity levels at 80%. In contrast, June sees a milder temperature range, with minimum temperatures rising to 0°C (32°F) and maximums soaring to 42°C (108°F), averaging 16°C (61°F). Precipitation decreases to 22 mm (0.9 in) over 6 days, and humidity slightly increases to 82%. For more specific details about June weather in Sisters, you can check out Sisters weather in June.
May and July exhibit notably different weather patterns. In May, temperatures fluctuate significantly with a minimum of -5°C (23°F) and a maximum of 31°C (88°F), leading to an average of 12°C (53°F). The month sees relatively high humidity at 80% and experiences about 37 mm (1.5 in) of precipitation over 8 days. In contrast, July boasts a warmer average temperature of 20°C (69°F), with minimum and maximum temperatures ranging from 0°C (33°F) to 37°C (99°F). Furthermore, July is much drier, receiving only 6 mm (0.3 in) of rain on just 1 day and maintaining a slightly lower humidity at 78%. For more details about weather trends in July, you can visit Sisters weather in July.
May and August present quite contrasting weather patterns. In May, temperatures can dip as low as -5°C (23°F) and reach up to 31°C (88°F), with an average temperature of 12°C (53°F). The month experiences around 37 mm (1.5 in) of precipitation over approximately 8 days, accompanied by high humidity levels at 80%. In stark contrast, August enjoys milder lows of 0°C (33°F) and significantly higher maximum temperatures peaking at 37°C (100°F), averaging around 20°C (68°F). Rainfall is minimal in August, with only about 8 mm (0.3 in) spread over just 2 days and lower humidity at 62%. For a clearer picture of what to expect, you can explore more about Sisters weather in August.
In May, temperatures range from a chilly -5°C (23°F) at night to a warm 31°C (88°F) during the day, with an average of 12°C (53°F). The month experiences about 37 mm (1.5 in) of precipitation over approximately 8 days, accompanied by high humidity levels of around 80%. In contrast, September offers a slightly milder climate, with temperatures dipping to -3°C (26°F) at night and peaking at a significantly higher 37°C (99°F) during the day, averaging 15°C (59°F). Precipitation in September is slightly lower at 36 mm (1.4 in), with only 5 rainy days and reduced humidity at 59%. This shift in weather makes September a drier and warmer month compared to May. For more detailed information, check Sisters weather in September.
May and October exhibit distinct weather patterns, with May generally being warmer and more humid. In May, temperatures range from a chilly -5°C (23°F) at night to a pleasant average of 12°C (53°F), peaking at a warm 31°C (88°F). In contrast, October temperatures drop, with minimums of -9°C (16°F) and a lower average of 8°C (47°F), despite still reaching highs of 30°C (87°F). Precipitation is slightly higher in October at 43 mm (1.7 in) over 7 days compared to May's 37 mm (1.5 in) over 8 days, and humidity remains relatively similar, with May at 80% and October at 78%. For more details on weather specifics, you can visit Sisters weather in October.
May and November present quite different weather conditions. In May, temperatures range from a low of -5°C (23°F) to a pleasant average of 12°C (53°F) and can peak at a warm 31°C (88°F), with 37 mm (1.5 in) of precipitation spread over about 8 days. The humidity is relatively high at 80%. In contrast, November features colder weather, with temperatures dipping to a minimum of -18°C (0°F) and an average of just 3°C (38°F), while the maximum reaches 22°C (71°F). Precipitation increases in November, totaling 74 mm (2.9 in) over approximately 11 days, accompanied by a slightly higher humidity level at 88%. For more detailed insights, you can check the Sisters weather in November.
In May, temperatures range from a chilly -5°C (23°F) at their lowest to a warm 31°C (88°F) at their peak, averaging around 12°C (53°F). The month experiences about 37 mm (1.5 in) of precipitation over approximately 8 days and has a humidity level of 80%. In contrast, December is much colder, with temperatures dipping down to -19°C (-2°F) and peaking at 18°C (65°F), averaging around 0°C (33°F). However, December sees more precipitation, totaling 93 mm (3.7 in) over 14 days, and a slightly higher humidity of 88%. For those interested in visiting during December, more information can be found here: Sisters weather in December.
In May, the weather in Sisters reveals a delightful transformation as the region transitions from the chill of winter to the warmth of summer. With a higher maximum temperature compared to earlier months, residents and visitors alike can enjoy more outdoor activities, while the average daytime warmth invites exploration of the stunning natural landscapes. However, the cool nights remind us that spring is still in the air, and occasional precipitation keeps the greenery vibrant. As humidity levels rise, May stands out as a month filled with life, setting the stage for the summer ahead. For a deeper dive into the unique seasonal patterns in this beautiful area, check out Sisters Climate.