December Weather in Sonora, United States

Last updated: February 24, 2025

December in Sonora, United States, offers a mild yet varied climate, characterized by a maximum temperature of 22°C (72°F) and an average of 8°C (46°F), while nighttime can dip to a chilly -2°C (28°F). This month sees approximately 148 mm (5.8 in) of precipitation spread over 9 days, creating a lush atmosphere amidst the winter chill. With humidity levels averaging around 80%, residents and visitors alike can expect a refreshing and slightly damp environment, perfect for enjoying the serene beauty of the season.

December Temperature in Sonora

In December, Sonora, United States begins to embrace winter, with temperatures gradually cooling down from the milder months preceding it. The minimum temperature dips to around -2°C (28°F), providing a crisp bite to the air, while the average settles at a chilly 8°C (46°F). Despite the drop, the maximum temperature reaches up to 22°C (72°F), offering a gentle reminder of the region's warming trends earlier in the year. This gradual shift signals the transition to colder months, setting the stage for a refreshing winter landscape that invites cozy gatherings and outdoor adventures alike. As December progresses, residents can expect a mix of brisk mornings and pleasantly mild afternoons, showcasing the unique climate of Sonora during this enchanting time of year.

December Weather in Sonora: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Sonora, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec464751576372787772625246
Data source: Temperature data for Sonora 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.

December Precipitation in Sonora

In December, Sonora experiences a significant shift in precipitation, receiving 148 mm (5.8 in) of rain over approximately 9 days. This marks a departure from the dry summer months, where rainfall is nearly nonexistent, with July and August recording no precipitation at all. As the year closes, December’s rainfall is a notable increase compared to the drier autumn months, such as October and November, which saw only 44 mm and 89 mm, respectively. The winter months invite a more sustained pattern of rainfall, contributing to the year's total precipitation and providing much-needed moisture to the region as it transitions into the cooler months.

December Precipitation Trends in Sonora

The chart displays monthly precipitation patterns in Sonora, with values for each month alongside December's data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how December's conditions compare to those of other months.
JanFebMarAprMayJunJulAugSepOctNovDec183180197834940144489148
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Sonora

As December arrives in Sonora, United States, the humidity levels settle at 80%, marking a subtle increase from the lower summer months, where July and August recorded their driest points at 58% and 54%, respectively. This gradual rise back toward higher levels, reminiscent of the winter months, reflects a pattern seen throughout the year: humidity peaks in early spring and late fall, with February's high of 84% game changing the landscape. The transition from the drier summer heat back to a more humid winter creates a refreshing shift in the air, setting the stage for the cozy charm of the approaching holiday season.

December Average Humidity in Sonora

This chart illustrates the average monthly humidity levels in Sonora, with December's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how December's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec82%84%82%78%71%64%59%54%55%62%78%80%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Sonora

In Sonora, United States, the December UV Index displays a moderate level of 3, indicating that while sun exposure carries some risk, precautions can easily mitigate it. This marks a return to lower indices after the intense summer months, where the UV Index peaked at 11 in May and persisted through July, classified as extreme. As the year winds down, the trend shows a steady decline in UV intensity from high levels in October to a return to moderate exposure in both November and December. Overall, December's burn time remains at a manageable 30 minutes, allowing residents and visitors to enjoy the outdoors while remaining sun-safe. For more detailed information, visit Sonora UV Index.

Maximum UV Index Levels in Sonora for December

The chart shows the monthly maximum UV Index (UVI) for Sonora in December, 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.
JanFebMarAprMayJunJulAugSepOctNovDec3589111111109743
Data source: Sonora December 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.

December Sunshine in Sonora

In Sonora, United States, December brings a gentle decline in sunshine hours, with the month averaging 203 hours of bright skies. This dip marks the transition into winter, contrasting sharply with the sun-soaked summer months. June and July are the peak performers, basking in 388 and 396 hours respectively, showcasing the region's vibrant summer. As the year wanes, daylight gradually diminishes, dropping from a springtime peak of 306 hours in April to 234 hours in November. However, even in December, the abundant sunshine still offers a cheerful backdrop to the festive season, ensuring that while the days may be shorter, Sonora's winter is far from gloomy.

Monthly Sunshine Duration in Sonora: December Highlighted

The December sunshine duration represents the total number of hours Sonora experiences direct sunlight during the month of December, excluding cloudy or obstructed periods. This chart compares the sunshine duration of December with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec159h214h260h306h363h388h396h364h321h290h234h203h
Data source: Sonora December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Sonora During December

As December rolls in, Sonora experiences a notable shift in its sun-soaked charm, with the likelihood of sunny weather dropping to 40%. This decline signals a departure from the bright peak of late summer, where August boasts an impressive 96% chance of sunshine. Following the year’s trend, December sits at the lower end of the spectrum alongside earlier winter months like January and February, which present chances of sun at 44% and 57%, respectively. Despite this dip, the region still enjoys a significant amount of clear days compared to the gloomier winter months many places endure. Thus, while the holiday season may not bring the relentless sunshine of summer, there remains a realistic hope for occasional bright moments amidst the cooler weather.

Percentage of Sunny Days in December in Sonora

The chart illustrates the percentage of sunny days in Sonora throughout the year, with December 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 Sonora experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec44%57%60%73%87%89%83%96%89%62%62%40%
Data source: Sonora December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Sonora in December

As December sweeps into Sonora, daylight hours dip back to 9 hours, mirroring the brief days of January. This month's twilight marks the tail end of a gradual decline in sunlight that began after the radiant days of summer, where 14 hours of daylight graced the region from May through July. Following this peak, daylight steadily wanes, offering 13 hours in August and 12 hours in September, before settling into shorter days. As the year closes, the cycle of light and darkness prepares to renew, suggesting that with each coming month, brighter days are just around the corner. The rhythm of the seasons is palpable in Sonora, where daylight duration ebbs and flows, creating a beautiful tapestry of light throughout the year.

Average Daylight Hours in Sonora for December

The chart illustrates the variation in daylight duration in Sonora throughout the year, with December highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 51m10h 47m11h 59m13h 12m14h 14m14h 45m14h 28m13h 33m12h 22m11h 9m10h 5m9h 33m
Data source: Sonora daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in Sonora

In Sonora, United States, December ushers in a gentle breeze with an average wind speed of 2.4 m/s (5 mph), slightly up from the quieter November, which recorded 1.8 m/s (4 mph). This mild increase aligns with the trend observed throughout the autumn months, where the winds typically remain subdued. As the year closes, the wind speeds in December mirror those of earlier months like March and April, highlighting a consistent yearly rhythm that brings a calm yet refreshing air to the region. This gentle winter wind, reminiscent of the year’s gradual transition, adds a serene quality to the landscape, inviting both locals and visitors to embrace the cool, crisp atmosphere as they enjoy the outdoors.

Average December Wind Speed in Sonora

The chart displays monthly wind speed patterns in Sonora, with values for each month shown alongside December's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how December's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec2.32.22.22.32.62.52.42.32.32.31.82.4 m/s
Data source: Sonora December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in Sonora Compares to Other Months

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

December and January feature relatively similar average temperatures in Sonora, with both months averaging around 8°C (46°F). However, January tends to be cooler, with a minimum temperature of -6°C (22°F) compared to December's minimum of -2°C (28°F). Precipitation is slightly higher in January, totaling 183 mm (7.2 in) over 8 days, whereas December sees 148 mm (5.8 in) across 9 days. Additionally, humidity increases marginally from 80% in December to 82% in January. For a more detailed look at the weather in January, visit Sonora weather in January.

December and February exhibit similar average temperatures, with February showing slightly cooler minimum temperatures at -6°C compared to December’s -2°C. Both months experience comparable average temperatures around 8°C, but February can reach slightly higher maximum temperatures of 24°C against December’s 22°C. Precipitation is higher in February, totaling 180 mm over 9 days, compared to December's 148 mm with the same number of rainy days, resulting in increased humidity as well, with February recorded at 84% vs December's 80%. For more details, you can check Sonora weather in February.

December and March present distinct weather patterns, though they share similar minimum temperatures, both dipping to a chilly -2°C (28°F). March enjoys a slightly warmer average temperature of 10°C (51°F) compared to December's 8°C (46°F), and it also boasts higher maximum temperatures, reaching up to 27°C (80°F) against December's 22°C (72°F). However, March experiences increased precipitation, with 197 mm (7.7 in) spread over 13 days, contrasted with December's 148 mm (5.8 in) over 9 days. Humidity levels are also slightly elevated in March, at 82%, compared to December's 80%. For more detailed weather insights, you can check out Sonora weather in March.

In December, the weather is characterized by cooler temperatures, with a minimum of -2°C (28°F) and an average of 8°C (46°F), while the maximum can reach up to 22°C (72°F). This month experiences a notable amount of precipitation, totaling 148 mm (5.8 in) spread over approximately 9 days, contributing to a relatively high humidity level of 80%. In contrast, April sees a rise in temperatures, with a minimum of -1°C (31°F) and an average of 14°C (57°F), peaking at 30°C (87°F). The total precipitation for April is significantly lower at 83 mm (3.3 in) across roughly 6 days, resulting in a slight decrease in humidity to 78%. For more details on April weather, check out Sonora weather in April.

December and May present quite a contrast in weather patterns. In December, temperatures range from a chilly minimum of -2°C (28°F) to a comfortable maximum of 22°C (72°F), with an average of 8°C (46°F). The month experiences higher precipitation levels, averaging 148 mm (5.8 in) over 9 days, and humidity is relatively high at 80%. In contrast, May boasts warmer temperatures, ranging from a minimum of 3°C (37°F) to a maximum of 35°C (94°F), with an average temperature of 17°C (63°F). The precipitation in May is significantly lower, at 49 mm (1.9 in) spread over just 5 days, and the humidity decreases to 71%. For more detailed insights, you can check Sonora weather in May.

December and June present strikingly different weather patterns. In December, temperatures can drop to a minimum of -2°C (28°F) and reach an average of 8°C (46°F), with a maximum of 22°C (72°F). This month experiences significant precipitation, averaging 148 mm (5.8 in) over about 9 days, coupled with a high humidity level of 80%. In contrast, June boasts a much warmer climate, with minimum temperatures around 8°C (46°F), an average of 22°C (73°F), and a scorching maximum of 39°C (103°F). Precipitation in June is minimal, totaling just 4 mm (0.1 in) over only 1 day, and the humidity is lower at 64%. For more insights on the weather in June, you can check out Sonora weather in June.

December and July present stark contrasts in weather conditions. In December, temperatures can drop as low as -2°C (28°F) at night, with an average of 8°C (46°F) and highs reaching 22°C (72°F). This month also sees significant precipitation, amounting to 148 mm (5.8 in) over about nine days, coupled with high humidity at 80%. In contrast, July experiences a much warmer climate with minimum temperatures around 13°C (55°F) and averages soaring to 26°C (79°F), peaking at a sweltering 39°C (103°F). Remarkably, July boasts no recorded precipitation, and with humidity levels at 58%, it is a significantly drier month. For more details on July weather, you can visit Sonora weather in July.

In December, the weather is characterized by a wide temperature range, with minimums plummeting to -2°C (28°F) and pleasant daytime averages of 8°C (46°F) under a max of 22°C (72°F). This month also experiences considerable precipitation, averaging 148 mm (5.8 in) across about 9 days, accompanied by relatively high humidity levels at 80%. In stark contrast, August boasts a much warmer climate, with minimum temperatures starting at 12°C (54°F) and soaring to averages of 25°C (78°F), peaking at a scorching 40°C (105°F). Remarkably, August sees no precipitation and an impressive low humidity of 54%, making it a dry and hot month. For more detailed insights on August weather, you can explore Sonora weather in August.

December and September offer contrasting weather experiences. In December, temperatures range from a chilly minimum of -2°C (28°F) to a comfortable maximum of 22°C (72°F), with an average of 8°C (46°F). The month sees significantly more precipitation, with 148 mm (5.8 in) spread over about 9 days, resulting in a humid atmosphere at 80%. In stark comparison, September boasts much warmer temperatures, with a minimum of 7°C (45°F) and a scorching maximum of 40°C (105°F), averaging at 22°C (72°F). Precipitation is minimal in September, recorded at just 4 mm (0.2 in) over only 1 day, contributing to a lower humidity level of 55%. For more details on September weather, you can visit Sonora weather in September.

When comparing the weather in December and October, significant differences emerge in both temperature and precipitation. December experiences cooler temperatures, with a minimum of -2°C (28°F) and an average of 8°C (46°F), while October boasts a milder average of 16°C (62°F), with a maximum reaching 34°C (93°F). Precipitation levels also vary greatly, as December sees 148 mm (5.8 in) over 9 days, compared to October’s much lighter 44 mm (1.7 in) spread over just 2 days. Additionally, the humidity is considerably higher in December at 80%, compared to October’s 62%, highlighting the more humid and wet conditions of the later month. For more detailed insights, you can check Sonora weather in October.

In December, the temperatures range from a minimum of -2°C (28°F) to a maximum of 22°C (72°F), with an average of 8°C (46°F). This month sees an increase in precipitation, totaling 148 mm (5.8 in) over 9 days, accompanied by a humidity level of 80%. In contrast, November is slightly warmer, with minimum temperatures of -1°C (30°F), maximums reaching 27°C (80°F), and an average of 11°C (52°F). Precipitation in November is lower at 89 mm (3.5 in) over 6 days, with a slightly lower humidity of 78%. For more detailed insights on November weather, you can visit Sonora weather in November.

Compare Sonora's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in Sonora

In December, Sonora transforms into a chilly haven, offering a refreshing contrast to the warmer months. With its cool temperatures and increased humidity, the town experiences a vibrant shift that many locals and visitors cherish. While the maximum daytime temperatures comfortably reach 22°C, the nights can plunge to nearly freezing, creating a dynamic climate perfect for cozy evenings. December stands out with its higher precipitation, averaging about 148 mm over approximately 9 days, which nourishes the landscape and adds a touch of winter magic. This unique blend of weather makes December an ideal time to explore Sonora Climate and experience the beauty of the season.