Last updated: February 24, 2025
Experience the vibrant May weather in Yountville, United States, where temperatures can soar to a warm maximum of 38°C (101°F), providing plenty of sunshine for outdoor activities. The average temperature rests comfortably at 19°C (66°F), with occasional cool dips to a minimum of 4°C (40°F) during the night. While the month sees 20 mm (0.8 in) of precipitation over just 2 days, the 74% humidity ensures the air remains pleasantly fresh and invigorating. Whether you're exploring local vineyards or enjoying the charming scenery, May in Yountville offers a delightful blend of warmth and refreshing breezes.
In Yountville, May ushers in a delightful transition towards warmer weather, with temperatures vividly reflecting this change. As spring blooms, the month showcases a minimum of 4°C (40°F), while the average climbs to a comfortable 19°C (66°F). Daytime highs can soar to an impressive 38°C (101°F), marking the start of the summer heat that will increasingly characterize the coming months. This progression is noteworthy; compared to April's average of 16°C (60°F), May offers a significant uptick in warmth, paving the way for outdoor activities and vineyard explorations. With the days stretching longer and sun-drenched afternoons becoming common, May in Yountville invites both locals and visitors to enjoy the burgeoning beauty of the season.
In Yountville, the month of May marks a noticeable dip in precipitation, with just 20 mm (0.8 in) recorded over only two days. This decline reflects a broader trend as the region transitions from the wetter winter months into the drier summer season. Following April's 32 mm (1.3 in) of rain, May's precipitation significantly wanes, heralding the start of bone-dry months ahead, notably June, which sees just 2 mm (0.1 in). This shift showcases the dynamic climate of Yountville, where the lushness of spring gives way to the arid warmth of summer, making May a pivotal month in the seasonal rhythm of the region.
In May, Yountville experiences a noticeable shift in humidity, dropping to 74% from the higher levels seen in the earlier months of the year. This decline marks the beginning of a gradual transition into the drier summer months, where humidity levels continue to decrease significantly, reaching as low as 36% in August. The month of May often boasts a comfortable balance between pleasant weather and moderate humidity, making it an ideal time for outdoor activities. As the year progresses, humidity plummets further, with July often being the driest month. However, as autumn arrives, humidity levels rebound, ultimately returning to the higher percentages typical of late fall and winter.
As spring transitions into summer in Yountville, the UV Index skyrockets, peaking at 10 in May, categorizing the exposure risk as very high. This notable surge illustrates an upward trend from earlier months, where the Index rose from 3 in January to 9 in April, emphasizing the need for increased sun safety measures. With a burn time of just 15 minutes during May, it's crucial for residents and visitors to take precautions, such as wearing sunscreen and protective clothing. The months ahead continue this trajectory, hinting at even more intense exposure. To stay informed and plan accordingly, check the detailed Yountville UV Index.
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In Yountville, the warm embrace of May sunshine marks a delightful peak in daylight, with an impressive 357 hours of sunshine—a significant leap from the 296 hours recorded in April. As spring unfolds, the gradual increase in daylight hours reveals a consistent upward trend, culminating in the vibrant warmth of summer. This surge continues into June and July, where sunshine hours reach their zenith, offering the perfect backdrop for outdoor activities and picturesque vineyards. By August, Yountville retains 356 hours of sunlight, ensuring that the charm of summer lingers. Even as the seasons transition into fall, the sunshine remains generous, though gradually declining, with the cozy allure of fall setting in by October.
As spring unfolds in Yountville, May stands out with a notable increase in the likelihood of sunny weather, boasting an impressive 85% chance of sunshine. This marks a significant leap from the earlier months, where sunny days are less certain, starting with only 37% in January and gradually climbing to 72% by April. The upward trend continues into the summer, with June peaking at 88%, making Yountville a prime destination for those seeking bright, clear skies during this month. As the weather shifts, May offers a delightful promise of warmth and sunshine, inviting visitors and locals alike to embrace outdoor activities and the region's scenic beauty.
As spring unfolds in Yountville, the transition towards summer brings noticeable changes in daylight duration. In May, residents bask in approximately 14 hours of daylight, marking a peak that aligns with nature's vibrant rebirth. This period follows a steady increase from 9 hours in January, allowing for longer days as the year progresses. Following May, daylight remains abundant through June and July, maintaining that same clarity before gradually tapering off into the fall months. From the warmth of April’s 13 hours to the gentle retreat to 12 hours in September, the trend highlights a clear dance of light and dark, enriching the experience of life in this picturesque town.
In Yountville, the month of May brings a noticeable shift in wind patterns, climbing to an average speed of 2.6 m/s (6 mph). This marks a gentle increase from the earlier months, where wind speeds hovered around 2.0 to 2.3 m/s. As spring progresses, the breezes become slightly more invigorating, creating a refreshing backdrop that complements the vibrant scenery. Following May, the wind speeds dip slightly in June, settling back to 2.4 m/s, but the overall trend highlights the season's charm, where the environment transitions into the warmth of summer. The mild winds of May set the stage for delightful outdoor experiences, making it a perfect time for a leisurely stroll through the picturesque vineyards and lush landscapes of this beautiful region.
The weather in Yountville 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 Yountville and find detailed weather information for every month.
In May, the weather is considerably warmer, with temperatures ranging from a minimum of 4°C (40°F) to a maximum of 38°C (101°F) and an average of 19°C (66°F). The month sees low precipitation, with only 20 mm (0.8 in) over just 2 days and a humidity level of 74%. In contrast, January presents a chilly climate, featuring temperatures from a minimum of -1°C (30°F) to a maximum of 26°C (78°F), with an average of 10°C (50°F). This month experiences significantly more rainfall, with 127 mm (5.0 in) over 8 days and a higher humidity of 84%. For a deeper look into January's weather, visit Yountville weather in January.
When comparing the weather in May and February, a stark contrast emerges. May boasts milder conditions with temperatures ranging from a minimum of 4°C (40°F) to a maximum of 38°C (101°F), averaging around 19°C (66°F). The month brings limited rainfall, with just 20 mm (0.8 in) of precipitation over approximately 2 days, and a humidity level of 74%. In contrast, February experiences chillier temperatures, with a minimum of -3°C (28°F) and a maximum of 27°C (81°F), averaging at 11°C (53°F). This month is significantly wetter, receiving 120 mm (4.7 in) of precipitation over 7 days, and slightly higher humidity at 84%. For more detailed information, you can check out Yountville weather in February.
When comparing the weather in May and March, it’s clear that May tends to be warmer and drier. In May, temperatures range from a minimum of 4°C (40°F) to a maximum of 38°C (101°F), with an average of 19°C (66°F) and only 20 mm (0.8 in) of precipitation over just 2 days, resulting in a humidity level of 74%. In contrast, March features cooler temperatures, with a minimum of 0°C (32°F) and a maximum of 30°C (86°F), averaging around 12°C (54°F). March also sees significantly more rainfall, totaling 84 mm (3.3 in) over 10 days, accompanied by a higher humidity level at 83%. For more details, you can check the Yountville weather in March.
In comparing the weather of May and April, it’s evident that May brings warmer temperatures, with an average of 19°C (66°F) and a maximum reaching 38°C (101°F), in contrast to April's average of 16°C (60°F) and a maximum of 33°C (92°F). While both months experience some rainfall, May sees significantly less precipitation at 20 mm (0.8 in) over just 2 days, compared to April's 32 mm (1.3 in) spread over 5 days. Additionally, May has slightly lower humidity at 74%, compared to April's 81%, making it feel drier and more comfortable. For a deeper look into what April typically brings, you can check out Yountville weather in April.
May and June present a noticeable shift in weather conditions. In May, temperatures fluctuate from a chilly minimum of 4°C (40°F) to a notably warm maximum of 38°C (101°F), with an average temperature of 19°C (66°F). The month experiences 20 mm (0.8 in) of precipitation over 2 days and higher humidity levels at 74%. Conversely, June sees a more stable warmth with a minimum temperature of 9°C (49°F) and a maximum of 42°C (108°F), accompanied by an average temperature of 23°C (74°F). Precipitation is minimal in June, with only 2 mm (0.1 in) recorded on 0 days and lower humidity at 64%. For more detailed information on June weather, check out Yountville weather in June.
In May, temperatures range from a cool minimum of 4°C (40°F) to a warm maximum of 38°C (101°F), with an average of 19°C (66°F). The month experiences some precipitation, with about 20 mm (0.8 in) recorded over 2 days, contributing to a relatively high humidity level of 74%. In contrast, July boasts a much higher average temperature of 24°C (76°F), with a minimum of 12°C (54°F) and a maximum reaching 41°C (106°F). July is notably drier, with only 1 mm (0.0 in) of precipitation and no rainy days, resulting in a lower humidity level of 44%. For a detailed look at July's weather, check out Yountville weather in July.
May tends to feature cooler temperatures with a range from a minimum of 4°C (40°F) to a pleasant average of 19°C (66°F), peaking at a high of 38°C (101°F). This month sees some precipitation, averaging around 20 mm (0.8 in) over just two days, along with a higher humidity level of 74%. In contrast, August is significantly warmer, with a minimum temperature of 11°C (52°F) and an average of 24°C (75°F), reaching maximums as high as 43°C (109°F). Notably, August experiences dry conditions with no recorded precipitation and only 36% humidity. For more details on August weather, you can check Yountville weather in August.
In May, temperatures range from a cool 4°C (40°F) to a warm 38°C (101°F), with an average temperature of 19°C (66°F). May experiences moderate humidity at 74% and sees about 20 mm (0.8 in) of precipitation over two days, suggesting a mix of sunny and occasionally rainy weather. In contrast, September boasts warmer temperatures, with a minimum of 7°C (45°F) and a maximum reaching 44°C (112°F), along with an average of 22°C (72°F). Notably, September is much drier, receiving only 1 mm (0.0 in) of rainfall over the entire month, coupled with significantly lower humidity at 44%. For a detailed look at September weather, check out Yountville weather in September.
In both May and October, temperatures exhibit remarkable similarities, with minimums around 4°C (40°F) and averages consistently at 19°C (66°F). However, while the maximum temperature can soar to 38°C (101°F) in both months, October experiences slightly increased precipitation at 31 mm (1.2 in) over 2 days compared to May's 20 mm (0.8 in). Humidity levels also differ, with October being less humid at 65%, while May has a higher humidity of 74%. For a closer look at what to expect, check out Yountville weather in October.
May and November exhibit strikingly different weather patterns. In May, temperatures range from a minimum of 4°C (40°F) to a maximum of 38°C (101°F), with an average of 19°C (66°F). The month is relatively dry with only 20 mm (0.8 in) of precipitation spread over 2 days and a humidity level of 74%. In contrast, November experiences cooler temperatures, with minima dropping to -1°C (30°F) and a maximum of 29°C (85°F), averaging 13°C (56°F). The month sees increased rainfall, totaling 43 mm (1.7 in) over about 5 days and higher humidity at 84%. For more insights on November weather, you can check Yountville weather in November.
May generally offers warmer temperatures compared to December, with an average of 19°C (66°F) and maximums reaching up to 38°C (101°F). In contrast, December presents cooler conditions, with an average temperature of 10°C (50°F) and maximums peaking at 23°C (75°F). While May experiences relatively low precipitation at 20 mm (0.8 in) over just 2 days, December sees a significant increase, with 87 mm (3.4 in) spread across 8 days. Additionally, humidity levels are higher in December at 83%, compared to 74% in May. For more details, check out Yountville weather in December.
As May rolls into Yountville, the weather showcases a delightful blend of warmth and mildness, making it a standout month compared to the cooler springtime or the hot summer ahead. With average temperatures hovering around a comfortable 19°C (66°F) and the occasional spike up to 38°C (101°F), you'll feel the transition into the balmy, inviting climate that precedes summer. While the month does bring about some humidity, with levels at 74%, it is typically offset by only a couple of days of rain, totaling around 20 mm (0.8 in). This combination creates the perfect backdrop for outdoor activities and exploring the region's renowned vineyards. For a broader perspective on how Yountville's weather evolves throughout the year, check out Yountville Climate.