Last updated: February 24, 2025
December in Tucson, United States, offers a unique blend of mild temperatures and occasional rainfall. With maximum temperatures reaching 27°C (80°F) and a comfortable average of 12°C (54°F), the days are pleasantly warm, while nights can dip to a chilly -2°C (29°F). This month typically sees about 27 mm (1.0 in) of precipitation spread over 4 days, contributing to an average humidity level of 82%. Visitors can expect a refreshing winter climate, perfect for outdoor activities amidst the stunning desert landscape.
In December, Tucson experiences a delightful transition into winter, with temperatures that showcase the region's mild climate. The minimum dips to around -2°C (29°F), hinting at the cooler nights typical of the season. However, the average temperature settles at a comfortable 12°C (54°F), allowing for pleasant daytime activities, while the maximum can reach up to 27°C (80°F), perfect for enjoying the outdoors. This month marks a notable coolness compared to the sweltering summer months, yet the temperatures remain significantly milder than many other destinations, illustrating Tucson's unique climate charm as the year comes to an end.
In December, Tucson experiences a notable increase in precipitation, with an average of 27 mm (1.0 in) recorded over four rainy days. This is part of a trend where the month stands out as one of the wetter periods compared to the drier months like April and June, which see little to no rainfall. Following the lush summer monsoon season, December provides a refreshing transition into winter, offering a reprieve from the dry climate that characterizes the earlier months. With the rainfall tapering off after the fall, this month’s precipitation is essential for maintaining local ecosystems and supporting the region's unique desert flora. Overall, December's weather signals a time of balance, bridging the warm months with the cooler, drier winters that follow.
In Tucson's December, humidity reaches its peak at a notable 82%, reflecting the area's cooler winter months when moisture levels tend to rise. This seasonal shift showcases a clear trend: after experiencing the driest conditions in June and July, where humidity dipped to just 33%, the latter part of the year sees a gradual increase. As temperatures cool, humidity consistently rises from 40% in May to its December high, indicative of the transition from the hot, arid summer into the more temperate winter months. This pattern highlights Tucson's distinct climate dynamics, where a dry summer gives way to a parched yet refreshing winter atmosphere.
In December, Tucson experiences a moderate UV Index of 4, with a corresponding burn time of 30 minutes. This marks a noticeable decline from the extremes of summer, where the UV Index soared to 12, suggesting a sharp increase in sun exposure risk. As the year winds down, the trend shows a gradual decrease in UV levels from the peak months of April to August, where very high and extreme categories were common, down to more manageable levels as winter approaches. Comparatively, December's lower index allows for safer outdoor activities, although precautions are still recommended, particularly for extended sun exposure. For more insights on local UV levels throughout the year, visit Tucson UV Index.
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In Tucson, United States, December brings a delightful continuation of sunny days, with 243 hours of sunshine gracing the landscape. This marks a slight decline from the vibrant hours of November, yet still contributes to Tucson's reputation as a warm, sun-kissed destination. As the year transitions, the sun's embrace begins to soften after the intense brilliance of summer months, which boast over 370 hours each in May and June. Despite this seasonal ebb, December's sunshine holds its charm, inviting residents and visitors alike to enjoy the mild temperatures and clear skies that characterize the winter months in this enchanting desert city.
In Tucson, December sees a 59% chance of sunny weather, marking a shift as the year draws to a close. While this figure is notably lower than the sun-soaked days typical of the late spring and early summer months—where chances peak at 88% in May—it still offers a fair opportunity to enjoy the outdoors. The trend throughout the year reveals a gradual increase in sunshine from January's 67%, peaking in the warmth of summer, then tapering off as cooler months approach. December's sunshine likelihood aligns with November's 70%, indicating that while the weather may not be as consistently bright, Tucson's December still offers a pleasant respite from winter chill.
In Tucson, the progression of daylight duration throughout the year showcases a rhythmic cycle, peaking in June with 14 hours of sunlight. As the year unfolds, January and November close the calendar with 10 hours of daylight, creating a sense of symmetry. The transition from winter to summer reveals an invigorating build-up, where each month brings an increase in sunlight, culminating in the longest days of summer. As summer wanes into autumn and finally winter, daylight begins to taper off again, returning to those shorter hours. December, with its 10 hours of daylight, wraps up the year on a note of balanced simplicity, reflecting the consistent ebb and flow of Tucson's natural light.
In Tucson, December ushers in the calm of winter, marked by an average wind speed of 2.3 m/s (5 mph). This gentle breeze follows a noticeable downward trend as the year winds down, dipping from the 3.3 m/s (7 mph) experienced in the warmer months of March through June. The transition into December reflects a steady decline in wind speed, as both July and August register their lowest averages at 2.2 m/s and 2.1 m/s, respectively. With November cooling to 2.5 m/s, the arrival of December offers a serene reprieve before the spring winds return, wrapping Tucson in a tranquil, breezy embrace. This seasonal shift not only enhances the crispness of the air but also invites residents and visitors alike to enjoy the picturesque landscapes of the Sonoran Desert in its quieter, windswept glory.
The weather in Tucson 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 Tucson and find detailed weather information for every month.
December and January in Tucson display similar weather patterns, although January showcases slightly cooler temperatures overall. In December, temperatures range from a minimum of -2°C (29°F) to a maximum of 27°C (80°F), with an average of 12°C (54°F). January features a minimum of -1°C (30°F) and a maximum of 25°C (77°F), averaging 11°C (53°F). Precipitation is also slightly lower in January, with 23 mm (0.9 in) over three days compared to December's 27 mm (1.0 in) over four days. Humidity experiences a decline from 82% in December to 76% in January, indicating a drier start to the year. For more details, you can check out Tucson weather in January.
December and February weather exhibit some similarities and differences that showcase the transition from late fall to early spring. In December, temperatures range from a chilly minimum of -2°C (29°F) to a comfortable maximum of 27°C (80°F), with an average temperature of 12°C (54°F). The month sees about 27 mm (1.0 in) of precipitation over four days and maintains a relatively high humidity of 82%. In contrast, February features slightly cooler temperatures, with a minimum of -3°C (27°F) and a maximum of 29°C (84°F), averaging at 13°C (55°F). Precipitation increases to 34 mm (1.3 in) over the same number of days, while humidity decreases slightly to 79%. This comparison illustrates how February typically brings warmer maximums and somewhat more precipitation than December while still remaining within a similar climatic range. For more details, check out Tucson weather in February.
In December, temperatures in Tucson can range from a chilly -2°C (29°F) at night to a comfortable high of 27°C (80°F) during the day, averaging around 12°C (54°F). The month sees about 27 mm (1.0 in) of precipitation spread over four days, with humidity levels at a relatively high 82%. In contrast, March brings milder temperatures, with lows around 1°C (33°F) and daytime highs reaching up to 33°C (92°F). The average temperature rises to 16°C (62°F), accompanied by less precipitation at 15 mm (0.6 in) over just three days, and humidity decreases to 67%. For more detailed insights, check out Tucson weather in March.
December and April present contrasting weather patterns. In December, temperatures range from a chilly minimum of -2°C (29°F) to a warm maximum of 27°C (80°F), with an average of 12°C (54°F). This month typically experiences 27 mm (1.0 in) of precipitation over four days, accompanied by high humidity at 82%. In sharp contrast, April enjoys a significantly warmer climate with temperatures ranging from a minimum of 6°C (43°F) to a scorching maximum of 37°C (98°F), averaging 22°C (71°F). Additionally, precipitation is minimal in April, with only 2 mm (0.1 in) recorded over zero days, and the humidity drops to a comfortable 55%. For more detailed weather insights, check out Tucson weather in April.
December and May showcase strikingly different weather patterns. In December, temperatures can range from a chilly -2°C (29°F) at night to a warm 27°C (80°F) during the day, with an average of 12°C (54°F). The month sees about 27 mm (1.0 in) of precipitation spread over four days, coupled with high humidity levels of 82%. In contrast, May brings much warmer temperatures, with nighttime lows of 9°C (48°F) and daytime highs soaring up to 40°C (104°F), averaging at 25°C (78°F). Precipitation in May is minimal, totaling just 3 mm (0.1 in) over a single day, and the humidity dips significantly to 40%. For a more detailed look at the warm weather, check out Tucson weather in May.
December and June present starkly contrasting weather conditions. In December, temperatures range from a chilly minimum of -2°C (29°F) to a comfortable average of 12°C (54°F), peaking at a warm 27°C (80°F). The month experiences about 27 mm (1.0 in) of precipitation over four days, accompanied by high humidity levels at 82%. Conversely, June is characterized by significantly warmer temperatures, with a minimum of 17°C (62°F) and an average high of 31°C (88°F), soaring to an extreme maximum of 44°C (111°F). This month experiences minimal precipitation, totaling just 8 mm (0.3 in) and no rainy days, along with much lower humidity at 33%. For a detailed look at the weather in Tucson during June, check out Tucson weather in June.
December and July present strikingly different weather patterns. In December, temperatures range from a chilly minimum of -2°C (29°F) to a more moderate maximum of 27°C (80°F), with an average temperature of 12°C (54°F). This month experiences relatively low precipitation, with only 27 mm (1.0 in) falling over four days and a high humidity level of 82%.
In contrast, July boasts much warmer temperatures, with a minimum of 20°C (69°F) and soaring average highs of 31°C (88°F) and maximum temperatures reaching up to 43°C (110°F). The humidity drops significantly to 34%, but the month records more rainfall, totaling 54 mm (2.1 in) over about ten days. For a more detailed look at Tucson's sweltering summer conditions, check out Tucson weather in July.
When comparing the weather in December and August, it becomes clear that the two months offer vastly different climates. December experiences cooler temperatures, with a minimum of -2°C (29°F) and an average of 12°C (54°F), while August boasts much warmer conditions, featuring minimums around 20°C (69°F) and average highs of 31°C (87°F), reaching up to 42°C (108°F) at times. Precipitation also varies, with December receiving about 27 mm (1.0 in) over four days and a higher total in August at 35 mm (1.4 in) over eight days. Additionally, December's humidity level sits at a high 82%, compared to a significantly lower 48% in August. For more detailed insights, check out Tucson weather in August.
In comparing the weather of December and September, notable differences emerge. December experiences cooler temperatures, with a minimum of -2°C (29°F) and an average of 12°C (54°F), while September boasts significantly warmer conditions, featuring a minimum of 13°C (56°F) and an average of 28°C (83°F). The maximum temperature in September can soar to 41°C (106°F), in stark contrast to December's maximum of 27°C (80°F). Precipitation levels are quite similar in both months, with December receiving 27 mm (1.0 in) over 4 days and September slightly higher at 27 mm (1.1 in) over just 3 days. Additionally, December has higher humidity at 82%, compared to September's 64%. For more detailed insights, you can check out Tucson weather in September.
December and October in Tucson display striking differences in weather patterns. In December, temperatures range from a chilly minimum of -2°C (29°F) to a comfortable average of 12°C (54°F), peaking at a mild 27°C (80°F). The month welcomes more humidity at 82% and experiences about 27 mm (1.0 in) of precipitation over roughly four days. In contrast, October boasts a significantly warmer climate, with temperatures seeing a minimum of 4°C (39°F), an average of 23°C (73°F), and soaring up to a scorching maximum of 38°C (100°F). This month is relatively drier, with only 10 mm (0.4 in) of precipitation across two days and a lower humidity level of 67%. For more detailed information, you can visit Tucson weather in October.
In December, temperatures experience a notable shift, with a minimum of -2°C (29°F) and a maximum of 27°C (80°F), compared to November's milder range of 2°C (36°F) to 33°C (91°F). The average temperature drops significantly, from 17°C (64°F) in November to 12°C (54°F) in December. Precipitation also increases in December, with 27 mm (1.0 in) noted over four days, compared to just 14 mm (0.6 in) over a single day in November. Additionally, humidity rises slightly from November's 77% to December's 82%, leading to a more uncomfortable atmosphere despite the cooler temperatures. For more detailed insights, check out Tucson weather in November.
As December rolls into Tucson, the weather takes on a unique character that distinctively contrasts with other months. With cooler average temperatures and occasional chilly nights, residents and visitors alike can experience a refreshing change from the warmer days of the year. While the city enjoys a bit of precipitation, it's typically limited to just a few days, making the air crisp and invigorating. The heightened humidity adds a cozy feel to the atmosphere, perfect for enjoying the holiday season. For more insights into how December fits into the broader climate landscape of Tucson, check out Tucson Climate.