October Weather in Yountville, United States

Last updated: February 24, 2025

In October, Yountville experiences a delightful blend of weather, with maximum temperatures soaring up to 38°C (101°F) and a pleasant average of 19°C (66°F). The nights cool down significantly, reaching a minimum of 4°C (39°F), creating the perfect atmosphere for autumn evenings. This month sees minimal precipitation, totaling about 31 mm (1.2 in) over just 2 days, allowing for ample opportunities to explore the picturesque landscapes. With a humidity level around 65%, the air remains refreshing, making October a charming time to enjoy everything Yountville has to offer.

October Temperature in Yountville

In October, Yountville experiences a shift towards cooler temperatures as the autumn season settles in. The minimum temperature hovers around 4°C (39°F), while daytime warms to an average of 19°C (66°F), marking a pleasant transition from the hotter summer months. The maximum highs still reach a comfortable 38°C (101°F), reminiscent of the lingering warmth from September, but the overall trend reflects a gradual cooling as the region prepares for winter. This time of year offers a perfect blend of warm afternoons ideal for vineyard explorations and crisp evenings best suited for cozy gatherings, showcasing Yountville's captivating charm in the fall.

October Weather in Yountville: Daily Temperature Highs, Lows, and Averages

The chart illustrates October temperature patterns in Yountville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec505254606673757572655549
Data source: Temperature data for Yountville 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.

October Precipitation in Yountville

In October, Yountville experiences a notable shift in precipitation patterns, receiving 31 mm (1.2 in) of rain over just 2 days. This marks a gradual increase from the drier months of summer, where July and August saw virtually no rainfall. As the month unfolds, the light showers not only refresh the landscape but also begin to hint at the wetter conditions typical of the approaching winter months. The trend indicates a transition from the parched summer heat, with October serving as a bridge to the more substantial rainfalls expected in November and December. This gradual buildup of precipitation supports a vibrant autumn atmosphere, providing much-needed moisture to the environment as it gears up for the seasonal changes ahead.

October Precipitation Trends in Yountville

The chart displays monthly precipitation patterns in Yountville, with values for each month alongside October's data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how October's conditions compare to those of other months.
JanFebMarAprMayJunJulAugSepOctNovDec1271208432202101314387
Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.
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October Humidity in Yountville

In Yountville, United States, October sees a notable increase in humidity, rising to 65% after the summer months, where figures plummet to as low as 36% in August. This gradual climb from July’s 44% suggests the onset of autumn begins to bring moisture back to the air, reflecting a shift away from the dry heat of summer. As October transitions into the cooler months, the humidity prepares the landscape for the lushness of fall, contrasting starkly with the crisp, arid conditions of midsummer. Following this upward trend, November will see humidity returning to 84%, reminiscent of the moister winter months that characterize the region.

October Average Humidity in Yountville

This chart illustrates the average monthly humidity levels in Yountville, with October's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how October's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec84%84%83%81%74%64%44%37%44%65%84%83%
Data source: Humidity data for October generated using information from the Copernicus Climate Change Service.

October UV Index in Yountville

As October arrives in Yountville, residents and visitors can expect a UV Index of 6, categorized as high, which signifies a moderate risk of harm from unprotected sun exposure. With a burn time of just 25 minutes, it's essential to take precautions, especially as summer extremes wane but still leave their mark in early fall. This transition from summer's extreme levels—peaking at 11 in June and July—to the milder but still significant October readings underscores the importance of vigilant sun protection throughout the year. As the days get shorter and cooler, don't let your guard down; ensure you're equipped to enjoy the delightful autumn sun safely. For more detailed information, check out Yountville UV Index.

Maximum UV Index Levels in Yountville for October

The chart shows the monthly maximum UV Index (UVI) for Yountville in October, 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.
JanFebMarAprMayJunJulAugSepOctNovDec3579101111109643
Data source: Yountville October 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.

October Sunshine in Yountville

In October, Yountville enjoys a delightful 280 hours of sunshine, marking a transition as the weather begins to cool. This month is part of a gradual decline in sunlight that began in the late summer, with July peaking at a vibrant 394 hours. As autumn settles in, the charm of Yountville is illuminated by the soft, golden rays of the sun, making for picturesque vineyard views and cozy gatherings. Comparatively, October offers significantly more sunshine than the winter months that follow, like November's 220 hours and December's 185 hours. This trend highlights a retention of brightness even as the longer days of summer fade, allowing residents and visitors alike to relish in the beauty of Napa Valley's fall foliage under the gentle October sun.

Monthly Sunshine Duration in Yountville: October Highlighted

The October sunshine duration represents the total number of hours Yountville experiences direct sunlight during the month of October, excluding cloudy or obstructed periods. This chart compares the sunshine duration of October with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec141h210h257h296h357h384h394h356h314h280h220h185h
Data source: Yountville October Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Yountville During October

In Yountville, October brings a 53% chance of sunny weather, marking a notable decline from the peak sunshine of summer months like June and August, which enjoy chances above 88%. As the vibrant fall season settles in, the weather transitions, presenting fewer sunny days compared to the bustling summer, yet still surpassing the gloomy winter months ahead. This trend signals a moderate shift towards cooler and cloudier days, while still offering ample opportunity for enjoying Yountville's picturesque vineyards and crisp autumn air, making it a delightful time to explore the region's scenic beauty.

Percentage of Sunny Days in October in Yountville

The chart illustrates the percentage of sunny days in Yountville throughout the year, with October 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 Yountville experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec37%59%63%72%85%88%84%89%82%53%50%35%
Data source: Yountville October chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Yountville in October

As October unfolds in Yountville, the days begin to shorten, offering about 11 hours of daylight. This marks a gradual decline from the longer days of summer, where daylight peaked at 14 hours in June, July, and August. The transition into autumn creates a beautiful interplay of light and color, as September's 12 hours of daylight wane into the crisp October air. Following this pattern, the days will continue to shorten into winter, reflecting a cyclical rhythm of nature that embodies the changing seasons. Enjoy the remaining daylight as the landscape evolves and prepares for the cozy embrace of winter months ahead.

Average Daylight Hours in Yountville for October

The chart illustrates the variation in daylight duration in Yountville throughout the year, with October highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 49m10h 46m11h 59m13h 13m14h 16m14h 47m14h 30m13h 34m12h 22m11h 8m10h 3m9h 31m
Data source: Yountville daylight hours, calculated by summing the hours between sunrise and sunset for each day.

October Winds in Yountville

As October unfolds in Yountville, the gentle rustle of leaves is accompanied by a slight uptick in wind speed to an average of 2.1 m/s (5 mph). This marks a subtle shift from the calmer breezes of late summer, where August and September each hosted the year's lightest winds at 1.9 m/s (4 mph). The transition into fall brings a comforting crispness to the air, enhancing the charm of the vineyard landscape. While October experiences mild gusts, it remains significantly calmer than the blustery months ahead, setting the stage for a cozy harvest season where the whispers of autumn dances through the vine-laden hills.

Average October Wind Speed in Yountville

The chart displays monthly wind speed patterns in Yountville, with values for each month shown alongside October's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how October's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec2.02.32.32.02.62.42.11.91.92.1 m/s1.61.8
Data source: Yountville October wind data, generated using information from the Copernicus Climate Change Service.

How October Weather in Yountville Compares to Other Months

The weather in Yountville changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of October'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 October, the weather typically features a broad temperature range, with minimums around 4°C (39°F) and maximums soaring to 38°C (101°F), resulting in an average of 19°C (66°F). The month experiences relatively low precipitation, with only 31 mm (1.2 in) over about 2 days, and humidity is moderate at 65%. In contrast, January exhibits cooler temperatures with minimums dropping to -1°C (30°F) and average highs of 10°C (50°F), reaching a maximum of 26°C (78°F). Precipitation is significantly higher in January, totaling 127 mm (5.0 in) spread over 8 days, along with increased humidity at 84%. For more details, you can check Yountville weather in January.

October and February present contrasting weather patterns. In October, temperatures range from a chilly 4°C (39°F) at night to a warm average of 19°C (66°F), with occasional highs soaring up to 38°C (101°F). The month sees relatively low precipitation, averaging just 31 mm (1.2 in) over about 2 days, and a moderate humidity level of 65%. In stark contrast, February experiences much colder temperatures, with minimum readings dipping to -3°C (28°F) and an average of 11°C (53°F). The highs are milder, peaking around 27°C (81°F), but February is much wetter, with 120 mm (4.7 in) of rain spread over 7 days and higher humidity at 84%. For more detailed insights on the weather, check out Yountville weather in February.

When comparing the weather in October and March, notable differences emerge. October typically boasts a warmer climate with average temperatures around 19°C (66°F) and maximums reaching as high as 38°C (101°F). In contrast, March feels significantly cooler, with average temperatures around 12°C (54°F) and maximums peaking at 30°C (86°F). While October enjoys relatively low precipitation with only 31 mm (1.2 in) over two days, March experiences a much wetter pattern, accumulating 84 mm (3.3 in) of rain over ten days. Additionally, March has higher humidity levels at 83%, compared to October's 65%. For more details, check out Yountville weather in March.

October and April showcase distinct weather patterns, reflecting the transition between summer and autumn and the onset of spring. In October, temperatures range from a minimum of 4°C (39°F) to a maximum of 38°C (101°F), with an average of 19°C (66°F) and relatively low precipitation of 31 mm (1.2 in) over just 2 days. The humidity level sits at a moderate 65%. In contrast, April features slightly cooler temperatures, with a minimum of 3°C (37°F) and a maximum of 33°C (92°F), averaging 16°C (60°F). Precipitation increases to 32 mm (1.3 in) over 5 days, and the humidity rises to 81%, creating a more damp atmosphere. For a detailed look at what to expect during this month, you can check out Yountville weather in April.

When comparing October and May weather, both months exhibit similar temperature ranges, with minimums around 4°C (39-40°F), averages of 19°C (66°F), and maximums that can reach up to 38°C (101°F). However, October tends to be slightly drier, receiving 31 mm (1.2 in) of precipitation compared to May's 20 mm (0.8 in), despite both experiencing rainfall on two days. Additionally, humidity in May is higher at 74%, compared to October's 65%, resulting in a more humid feel during the spring month. For those interested in more details, you can check out the Yountville weather in May.

In comparing the weather of October and June, October tends to be cooler with an average temperature of 19°C (66°F), while June enjoys a warmer average of 23°C (74°F). October can see temperatures ranging from a minimum of 4°C (39°F) to a maximum of 38°C (101°F), whereas June's minimum starts at 9°C (49°F) and can reach up to 42°C (108°F). Precipitation is also more prevalent in October, with 31 mm (1.2 inches) over 2 days, while June is notably dry, experiencing just 2 mm (0.1 inches) with no rainy days. The humidity remains relatively stable, with October at 65% and June slightly lower at 64%. For a detailed look at June weather in Yountville, check out Yountville weather in June.

In comparing the weather patterns of October and July, October presents a much cooler climate with temperatures ranging from a minimum of 4°C (39°F) to a maximum of 38°C (101°F) and an average of 19°C (66°F). In contrast, July boasts a milder minimum temperature of 12°C (54°F) and a more consistent average of 24°C (76°F), peaking at 41°C (106°F). October also experiences a higher level of humidity at 65%, compared to July's 44%, and sees some precipitation with an average of 31 mm (1.2 in) over just 2 days, while July remains mostly dry with only 1 mm (0.0 in) of rain. For more detailed insights, you can check out the Yountville weather in July.

In comparing the weather of October and August, it is clear that there is a significant difference in temperature and humidity levels. October experiences a minimum temperature of 4°C (39°F), with an average of 19°C (66°F) and a maximum reaching up to 38°C (101°F). In contrast, August has a much higher minimum temperature of 11°C (52°F) and an average of 24°C (75°F), peaking at a sizzling 43°C (109°F). Additionally, October sees a bit of precipitation with 31 mm (1.2 in) spread over two days, while August remains dry with no recorded precipitation. Notably, October has a higher humidity level at 65%, compared to August’s much lower 36%. For more detailed insights, check out Yountville weather in August.

In comparing the weather patterns of October and September, October tends to be cooler overall, with minimum temperatures dipping to 4°C (39°F) and average temperatures around 19°C (66°F), while September features warmer conditions, with a minimum of 7°C (45°F) and an average of 22°C (72°F). The maximum temperatures in September can soar as high as 44°C (112°F), significantly higher than October's maximum of 38°C (101°F). Additionally, October experiences slightly more precipitation, with 31 mm (1.2 in) over two days, whereas September remains quite dry, recording only 1 mm (0.0 in) with no rainy days. Furthermore, October's humidity is higher at 65%, compared to September's lower 44%. For more detailed insights, you can check Yountville weather in September.

October and November present a notable transition in weather patterns. In October, temperatures range from a mild 4°C (39°F) at night to a warm 38°C (101°F) during the day, averaging around 19°C (66°F). Precipitation is relatively low, with just 31 mm (1.2 in) falling over two days, and humidity sits at a comfortable 65%. In contrast, November experiences cooler temperatures, with minimums dipping to -1°C (30°F) and an average of 13°C (56°F), while highs reach about 29°C (85°F). Rainfall increases to 43 mm (1.7 in) spread over five days, and humidity rises significantly to 84%. This shift marks a clear change towards cooler and wetter weather. For more detailed information, you can check Yountville weather in November.

In October, the weather features a wide temperature range with a minimum of 4°C (39°F) and a maximum of 38°C (101°F), showcasing the tail end of warmer days. The average temperature sits at a mild 19°C (66°F), accompanied by relatively low precipitation of 31 mm (1.2 in) over just 2 days, and the humidity is a comfortable 65%. In contrast, December brings cooler temperatures, with a minimum dipping to 0°C (33°F) and an average of only 10°C (50°F), peaking at 23°C (75°F). This month also sees increased precipitation totaling 87 mm (3.4 in) spread over 8 days, along with higher humidity at 83%. For a more detailed look at December weather, check out Yountville weather in December.

Compare Yountville's Climate with Cities Worldwide

Conclusion: What to Expect From October Weather in Yountville

As October unfolds in Yountville, the weather presents a delightful transition, stepping away from the summer heat while embracing the mild crispness of autumn. With a maximum temperature that peaks noticeably lower than the summer months, the average daily temperature offers a refreshing break, inviting outdoor adventures amidst breathtaking fall foliage. The month also witnesses a hint of rainfall, with just two days of precipitation keeping the landscape lush and vibrant. While humidity lingers at a comfortable level, October’s climate favorably contrasts with the sweltering summer days, making it an ideal time to explore the beautiful surroundings. For further details on Yountville's climate patterns, visit Yountville Climate.