Last updated: February 24, 2025
In Healdsburg, December welcomes a blend of cool temperatures and occasional rain, creating a unique winter atmosphere. With a maximum of 23°C (73°F) during the warmer afternoons, the average hovers around 9°C (48°F), while nights can dip to a chilly -2°C (29°F). The town experiences 101 mm (4.0 in) of precipitation spread over 8 days, contributing to the region's lush landscape. Humidity levels remain relatively high at 84%, enhancing the crisp, refreshing feel of the season. Whether you're exploring local wineries or enjoying outdoor festivities, December in Healdsburg offers a delightful, cozy retreat.
As December settles over Healdsburg, the temperatures begin to dip, with minimums averaging around -2°C (29°F) and averages hovering at 9°C (48°F). Although this month marks one of the coldest times of the year, it also sees a mild maximum of 23°C (73°F), offering a pleasant contrast. Notably, December's cooler climate follows a trend of decreasing temperatures as the year winds down, with the month showcasing a subtle chill compared to the more temperate autumn. This season invites cozy evenings and a vibrant atmosphere, perfect for enjoying local festivities and the enchanting winter scenery.
In December, Healdsburg experiences a significant uptick in precipitation, with 101 mm (approximately 4.0 inches) falling over 8 rainy days. This increase marks a contrast to the preceding months, as the dry spell of summer gives way to a more robust winter pattern. When compared to November, which saw 58 mm of rain over 5 days, December not only brings more rainfall but also more opportunities for the skies to open up. This trend highlights the transition from a mild autumn to a wetter winter season, underscoring how December stands out as a month of replenishment for the region, paving the way for vibrant growth in the upcoming year.
In December, Healdsburg experiences a notable return to higher humidity levels, with an average of 84%, mirroring the patterns seen in November. This seasonal shift marks a contrast to the warmer months of July and August, when humidity dipped to its lowest at 70% and 66%, respectively. As the year closes, the air becomes increasingly moist, reflecting a transition from the drier summer to the wetter winter months. The steady humidity in December sets the stage for a cozy, crisp end to the year, reminiscent of the refreshing chill that defines the holiday season in this charming California town.
In Healdsburg, December heralds the onset of cooler temperatures, reflected in its UV Index, which drops to a moderate level of 3. This signals a gentle reminder for sun safety, as the potential for sunburn extends to about 30 minutes of unprotected exposure. Following a yearly trend, the UV Index is at its highest during the summer months, peaking at 11 in both June and July, where brief outdoor activities require keen attention to sun protection. As the seasons progress, UV exposure diminishes, making December a month of lower risk for sun damage. For detailed insights and safety recommendations, check out the Healdsburg UV Index.
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In Healdsburg, December marks a gentle transition into winter, offering a cozy 185 hours of sunshine. This reflects a gradual decline from the sun-soaked heights of summer, where sunlit days peaked at a vibrant 390 hours in July. As the year progresses, sunlight becomes a cherished commodity, beginning with a modest 141 hours in January and steadily rising through the spring months, ultimately reaching its zenith in May with 356 hours. This trend outlines a clear seasonal rhythm, where long, sun-drenched days give way to shorter, cooler ones, yet December’s light still holds its charm, inviting both locals and visitors to embrace the serene beauty of winter in wine country.
In Healdsburg, December marks the beginning of a noticeable dip in sunny weather, with only a 35% chance of sunshine. This decline comes after a vibrant series of months where the likelihood of clear skies reaches its zenith in May at 85%. As the year progresses from September to November, the chances already slide downwards, culminating in December's ranks among the least sunny periods of the year. The pattern reveals a distinct seasonal shift, suggesting that while Healdsburg enjoys a warm summer and mild fall, winter heralds a time when residents might want to keep their umbrellas handy rather than their sunglasses.
In Healdsburg, the daylight duration exhibits a rhythmic ebb and flow throughout the year, peaking in the warmer months and dwindling as winter approaches. Starting in December, the daylight shrinks to a modest 9 hours, mirroring the shorter days typical of winter. This is part of a gradual decline that begins in November and continues until the summer solstice, where daylight reaches a maximum of 14 hours in June and July. As the seasons transition, daylight progressively increases from February's 10 hours through to a vibrant 14 hours in the delightful month of May. This pattern reflects the scenic dance of nature, where the long, sun-soaked days of summer give way to cozy, candlelit nights of winter, inviting residents to embrace the unique beauty of each season.
In Healdsburg, December brings a gentle breeze with an average wind speed of 2.0 m/s (4 mph), marking a slight increase from the calm winds of November. Throughout the year, wind patterns reveal a subtle ebb and flow, with the briskest months appearing in late spring and early summer. As the year progresses into winter, the winds tend to calm, reflecting the overall seasonal shift. Interestingly, both January and December share similar wind speeds, suggesting a consistent coolness in the air as the year comes to a close. This tranquil December wind complements the picturesque holiday ambiance, making it a delightful time to enjoy the serene landscapes of Healdsburg.
The weather in Healdsburg changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of December's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Healdsburg and find detailed weather information for every month.
In December, temperatures generally range from a minimum of -2°C (29°F) to a maximum of 23°C (73°F), with an average of about 9°C (48°F). The month sees moderate precipitation at 101 mm (4.0 in) over approximately 8 days, accompanied by a humidity level of 84%. In contrast, January experiences slightly warmer temperatures, with a minimum of -2°C (28°F) and a maximum of 24°C (75°F), maintaining a similar average of 9°C (49°F). However, this month is marked by increased rainfall, totaling 139 mm (5.5 in) while still occurring over 8 days, resulting in a higher humidity of 86%. For more detailed information on January weather trends, you can visit Healdsburg weather in January.
When comparing the weather in December and February, several notable differences emerge. December tends to have milder temperatures, with a minimum of -2°C (29°F) and a maximum reaching 23°C (73°F). In contrast, February experiences slightly colder nights, with a minimum of -4°C (26°F), but boasts comparable day-time warmth, with highs peaking at 26°C (80°F). Precipitation levels also differ, as February sees a higher amount at 155 mm (6.1 in) compared to December's 101 mm (4.0 in), despite both months having rain on about 8 days. Interestingly, both months maintain consistent humidity levels at 84%, giving a similar feel to the air. For more specific details, check out Healdsburg weather in February.
December and March exhibit notable differences in weather patterns, with December generally being cooler while March begins to warm up. In December, temperatures range from a minimum of -2°C (29°F) to a maximum of 23°C (73°F), with an average temperature of 9°C (48°F). By contrast, March sees slightly warmer temperatures, ranging from -1°C (30°F) at the lowest to 28°C (83°F) at the highest, with an average of 11°C (52°F). Both months experience similar levels of precipitation, with December receiving 101 mm (4.0 in) over 8 days and March receiving 97 mm (3.8 in) over 11 days. Humidity remains relatively high in both months, at 84% in December and 83% in March. For more detailed insights on March weather, you can refer to Healdsburg weather in March.
December and April weather present notable contrasts. In December, temperatures typically range from a chillier minimum of -2°C (29°F) to a more moderate maximum of 23°C (73°F), with an average of 9°C (48°F). The month is characterized by higher precipitation, totaling 101 mm (4.0 in) over about 8 days, alongside a humidity level of 84%. In comparison, April sees a milder climate, with minimum temperatures rising to 3°C (37°F) and maximums reaching 31°C (89°F), averaging at 14°C (57°F). Precipitation in April is lower at 45 mm (1.8 in) across just 5 days, and humidity remains relatively comfortable at 80%. For more specific insights on April's climate, you can check out Healdsburg weather in April.
In comparing December and May weather, December tends to be much cooler, with temperatures ranging from a minimum of -2°C (29°F) to a maximum of 23°C (73°F) and an average of 9°C (48°F). This month also sees higher precipitation levels at 101 mm (4.0 in) over about 8 days, accompanied by a humidity of 84%. In contrast, May brings warmer temperatures, with a minimum of 3°C (39°F), an average of 17°C (62°F), and a peak of 35°C (96°F). Precipitation is significantly lower in May at 27 mm (1.1 in) spread over just 3 days, along with a slightly lower humidity of 80%. For more details, check out Healdsburg weather in May.
In December, temperatures range from a chilly -2°C (29°F) to a milder 23°C (73°F), with an average temperature of 9°C (48°F). The month is characterized by significant precipitation, totaling 101 mm (4.0 in) over approximately 8 days, and relatively high humidity at 84%.
In stark contrast, June showcases much warmer weather, with temperatures starting at a minimum of 8°C (47°F) and soaring to highs of 40°C (105°F), averaging around 21°C (69°F). June sees minimal rainfall, with only 2 mm (0.1 in) and no rainy days, along with a lower humidity level of 76%. For more details, check out Healdsburg weather in June.
December and July present starkly contrasting weather conditions. In December, temperatures range from a chilly -2°C (29°F) to a mild 23°C (73°F), with an average of 9°C (48°F), alongside considerable precipitation of 101 mm (4.0 in) over approximately 8 days and high humidity at 84%. In contrast, July boasts much warmer temperatures, with a minimum of 11°C (53°F), an average of 22°C (71°F), and a scorching maximum of 38°C (101°F). July stands out for its dry conditions, recording no precipitation and lower humidity at just 70%. For more details on July weather, check Healdsburg weather in July.
December weather in Healdsburg is characterized by much cooler temperatures, ranging from a minimum of -2°C (29°F) to an average of 9°C (48°F), and peaking at 23°C (73°F). The month also sees considerable precipitation, with 101 mm (4.0 in) of rain falling over 8 days, contributing to a high humidity level of 84%. In contrast, August offers a starkly different climate with much warmer temperatures, featuring a minimum of 10°C (51°F) and an average of 21°C (71°F), soaring up to a maximum of 38°C (101°F). Remarkably dry, August records no precipitation at all, coupled with a lower humidity of 66%. For more details, you can check Healdsburg weather in August.
In comparing December and September's weather, December tends to be much cooler and wetter. The average temperature in December hovers around 9°C (48°F), with minimums dropping to -2°C (29°F) and maximums reaching 23°C (73°F). This month also brings significant precipitation, accumulating 101 mm (4.0 in) over about 8 days, and boasts a higher humidity level of 84%. In stark contrast, September offers a much warmer climate with average temperatures of 20°C (69°F), minimums at 7°C (45°F), and those sweltering maximums soaring to 41°C (105°F). Remarkably, September experiences only minimal rainfall, with just 2 mm (0.1 in) over 0 days, and lower humidity at 68%. For those interested in the specifics of September's pleasant weather, more information can be found here.
In comparing the weather between December and October, December tends to be much cooler with temperatures ranging from a minimum of -2°C (29°F) to a maximum of 23°C (73°F), averaging around 9°C (48°F). In contrast, October boasts warmer temperatures, with a range from a minimum of 3°C (38°F) to a maximum of 35°C (96°F), and an average of 17°C (63°F). Additionally, December experiences significantly more precipitation, totaling 101 mm (4.0 in) over 8 days, compared to October's 41 mm (1.6 in) over just 2 days. Humidity also rises in December to 84%, while October's humidity is a lower 72%. For more details on October weather, check Healdsburg weather in October.
In comparing the weather patterns of December and November, December generally experiences cooler temperatures, with a minimum of -2°C (29°F) and an average of 9°C (48°F), while November has slightly warmer conditions with a minimum of -1°C (30°F) and an average of 12°C (54°F). Additionally, December sees greater precipitation, totaling 101 mm (4.0 in) over 8 days, compared to November's 58 mm (2.3 in) across just 5 days. Both months maintain the same humidity level of 84%, but December's increased precipitation and cooler temperatures create a distinct contrast to November's relatively milder and drier conditions. For more details about November's weather, you can check out Healdsburg weather in November.
As December rolls into Healdsburg, the weather takes on a distinct character, transitioning from the warm hues of autumn to the crisp chill of winter. This month showcases a significant drop in temperatures, where pleasant daytime highs give way to cold nights that can plunge below freezing. With about 101 mm of precipitation over approximately 8 rainy days, December is one of the wetter months, contributing to the region's vibrant winter landscape. The high humidity of around 84% adds to the refreshing feel of the season. If you're curious about how December compares to other months, explore more at Healdsburg Climate.