December Weather in Greenville, United States

Last updated: February 24, 2025

December in Greenville, United States, offers a brisk yet inviting winter climate. With average temperatures hovering around 8°C (47°F), residents experience maximum highs of 24°C (75°F) during the day, while nighttime lows can plunge to a chilly -7°C (19°F). The month sees an average precipitation of 130 mm (5.1 in), spread across approximately 10 days, creating a moist atmosphere characterized by an average humidity level of 88%. This combination of cool temperatures and intermittent rain contributes to a quiet charm that encapsulates the essence of December in this vibrant city.

December Temperature in Greenville

In Greenville, December brings a noticeable chill as temperatures drop further into winter. With minimums sinking to -7°C (19°F), the month showcases a stark contrast to the milder conditions of previous months. The average temperature, hovering around 8°C (47°F), signifies the onset of colder days, while the maximums reach a comfortable 24°C (75°F), hinting at the lingering warmth from autumn. This month marks the transition into deeper winter, characterized by short, crisp days and a range of temperatures that invite cozy indoor activities while still allowing for moments to enjoy the seasonal beauty outdoors.

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

The chart illustrates December temperature patterns in Greenville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec444954617076807874655147
Data source: Temperature data for Greenville generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in Greenville

In December, Greenville experiences a notable increase in precipitation, with an average rainfall of 130 mm (5.1 in) over approximately 10 days. This puts December among the wetter months of the year, following a pattern of increasing moisture as winter approaches. The trend shows that, while November had only 95 mm (3.7 in) of rain over 8 days, December's figures reflect the city's tendency to see more frequent rainfall during the colder months. This consistent precipitation not only contributes to the region's lush landscapes but also signals the transition into the wetter winter months that follow. As the year draws to a close, Greenville’s rainfall patterns underscore a shift towards cooler and wetter conditions, setting the stage for a vibrant and refreshed natural environment.

December Precipitation Trends in Greenville

The chart displays monthly precipitation patterns in Greenville, 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.
JanFebMarAprMayJunJulAugSepOctNovDec99144109125138889312113213095130
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Greenville

In December, Greenville experiences a noticeable increase in humidity, reaching 88%, comparable to the moist conditions seen in November. This trend highlights the area's propensity for higher humidity levels during the winter months, with January and February also maintaining the same elevated humidity of 86%. Interestingly, the summer months showcase a contrast, with humidity levels dipping as low as 76% in August and September. Overall, the data reveals a seasonal cycle where winter months are marked by higher humidity, creating a cozy yet damp atmosphere typical of southern winters.

December Average Humidity in Greenville

This chart illustrates the average monthly humidity levels in Greenville, 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.
JanFebMarAprMayJunJulAugSepOctNovDec86%86%86%82%85%85%83%76%76%80%88%88%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Greenville

As December arrives in Greenville, the UV Index drops to a moderate level of 4, signaling a shift from the intense summer months characterized by extreme exposure. With a burn time of 30 minutes, residents can enjoy outdoor activities without the immediate concern of harmful UV rays, a contrast to the extreme readings of 11 seen in the summer. This gentle decline in the UV Index continues the trend of cooler weather and reduced sun intensity, making it an ideal time to embrace the outdoors while still being mindful of sun safety. For more details on the UV levels throughout the year, check out Greenville UV Index.

Maximum UV Index Levels in Greenville for December

The chart shows the monthly maximum UV Index (UVI) for Greenville 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.
JanFebMarAprMayJunJulAugSepOctNovDec46810111111109864
Data source: Greenville 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 Greenville

In Greenville, United States, December offers a cozy embrace of sunshine with 199 hours of daylight, gracefully wrapping up the year. As one of the shorter months in terms of daylight, December follows a notable trend of increasing sunshine hours from January's 168 hours and peaks in the sun-drenched summer months, notably July with 345 hours. As the seasons shift, the sunlight begins to wane, but even in winter, residents enjoy a comforting glow that contrasts the chilly weather, highlighting a steady pattern of sun-rich months from March through August. This gentle ebb and flow of sunlight reminds us that even in the heart of winter, the promise of brighter days lies just ahead.

Monthly Sunshine Duration in Greenville: December Highlighted

The December sunshine duration represents the total number of hours Greenville 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.
JanFebMarAprMayJunJulAugSepOctNovDec168h177h240h275h303h320h345h313h290h265h236h199h
Data source: Greenville December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Greenville During December

In December, Greenville, United States, experiences a 39% chance of sunny weather, making it one of the cooler months for sunshine when compared to its neighbors. This drop in sunny days follows an upward trend in November, which boasts a 61% likelihood of sun, likely due to the transitional climate as autumn gives way to winter. The data highlights a noticeable decrease in sunshine from the warmer months, particularly with June's 31% and July's 38%, indicating that the region's winter months can be somewhat overcast. As Greenville settles into December, residents can expect a mix of chilly days with occasional bursts of sunshine, firmly placing this month in the lower tier of the annual sunshine spectrum.

Percentage of Sunny Days in December in Greenville

The chart illustrates the percentage of sunny days in Greenville 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 Greenville experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec46%40%38%57%36%31%38%41%50%47%61%39%
Data source: Greenville December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Greenville in December

As December arrives in Greenville, the daylight hours dwindle to just nine hours, marking the year's shortest days. Following a gradual decline from ten hours in November, the trend of decreasing daylight continues after the peak of fourteen hours in late June and early July. This month sees a notable shift from the thirteen hours experienced during the sun-soaked days of May and August. As winter sets in, residents are reminded of the rhythm of the seasons, where daylight lingers less, prompting cozy evenings by the fire and a time for reflection amidst the longer nights.

Average Daylight Hours in Greenville for December

The chart illustrates the variation in daylight duration in Greenville throughout the year, with December highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec10h 6m10h 55m11h 59m13h 4m13h 59m14h 26m14h 11m13h 23m12h 20m11h 15m10h 19m9h 50m
Data source: Greenville daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in Greenville

As December sweeps into Greenville, the wind begins to pick up, averaging 2.5 m/s (6 mph)—a refreshing change that echoes the steady increase seen through the fall months. Following a gradual decline in summer, where winds dipped to their lowest in July and August at 1.9 m/s (4 mph), the wind speeds in the late fall showed a slight resurgence, peaking in November. This trend culminates in December, where the winds carry the crispness of winter and signal the end of the year, offering a gentle reminder of nature's rhythms as we transition into the new year. Overall, the cycle of winds reflects the region's dynamic climate, with December marking a return to breezier excursions that invite both adventure and quiet reflection.

Average December Wind Speed in Greenville

The chart displays monthly wind speed patterns in Greenville, 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.
JanFebMarAprMayJunJulAugSepOctNovDec2.52.62.72.62.52.11.91.71.92.12.32.5 m/s
Data source: Greenville December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in Greenville Compares to Other Months

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

In December, temperatures range from a chilly minimum of -7°C (19°F) to a warm maximum of 24°C (75°F), with an average of 8°C (47°F). Rainfall is relatively high at 130 mm (5.1 in), occurring over about 10 days, which contributes to a high humidity level of 88%. In contrast, January experiences slightly colder temperatures, with a minimum of -12°C (10°F) and an average of 7°C (44°F), but a slightly higher maximum of 25°C (78°F). Precipitation decreases to 99 mm (3.9 in) over 8 days, and humidity remains comparable at 86%. For more details on January weather patterns, check Greenville weather in January.

December and February exhibit relatively mild winter temperatures, but February tends to be slightly warmer overall. In December, temperatures range from a minimum of -7°C (19°F) to a maximum of 24°C (75°F), with an average of 8°C (47°F). In contrast, February has a minimum temperature of -5°C (24°F) and a maximum of 26°C (79°F), averaging 10°C (50°F). Precipitation is slightly higher in February, totaling 144 mm (5.7 in) over 13 days compared to December's 130 mm (5.1 in) over 10 days. Humidity levels remain similar, with December at 88% and February at 86%. For more details on the conditions during this month, check out Greenville weather in February.

When comparing December and March weather, December tends to be cooler, with temperatures ranging from a minimum of -7°C (19°F) to a maximum of 24°C (75°F) and an average temperature of 8°C (47°F). It experiences significant precipitation, with around 130 mm (5.1 in) falling over approximately 10 days, along with high humidity at 88%. In contrast, March brings milder temperatures, with a minimum of -5°C (24°F) and a maximum reaching 31°C (87°F), resulting in an average temperature of 12°C (54°F). Although March has slightly less precipitation at 109 mm (4.3 in) spread over about 12 days, the humidity is slightly lower at 86%. Overall, March presents a transition into warmer weather, making it feel much more moderate than the colder December conditions. For more details, you can check Greenville weather in March.

In December, the weather is characterized by cooler temperatures, ranging from a minimum of -7°C (19°F) to a maximum of 24°C (75°F), with an average temperature of 8°C (47°F). This month also experiences significant humidity at 88%, with 130 mm (5.1 in) of precipitation over about 10 days. In contrast, April brings milder conditions, where temperatures range from a minimum of -2°C (29°F) to a maximum of 30°C (86°F), averaging at 16°C (62°F). Although April has slightly less precipitation at 125 mm (4.9 in) and fewer rainy days (9 days), it features lower humidity at 82%. For a more detailed look at what to expect during April, visit Greenville weather in April.

In December, temperatures in Greenville are significantly cooler, with a minimum of -7°C (19°F) and an average of 8°C (47°F), while the maximum can reach 24°C (75°F). The month experiences about 130 mm (5.1 in) of precipitation over 10 days, coupled with high humidity at 88%. In contrast, May offers a much warmer climate, boasting a minimum temperature of 5°C (41°F) and an average of 21°C (70°F), with maximums climbing to 34°C (94°F). Precipitation in May is slightly higher at 137 mm (5.4 in) over 11 days, and humidity remains slightly lower at 85%. For more detailed information about the weather in May, check out Greenville weather in May.

December weather is characterized by cooler temperatures, with a minimum of -7°C (19°F) and an average of 8°C (47°F), reaching a maximum of 24°C (75°F). The month experiences significant precipitation, totaling 130 mm (5.1 in) over about 10 days, coupled with high humidity at 88%. In contrast, June brings a milder and warmer climate, with minimum temperatures around 12°C (55°F), an average of 24°C (76°F), and maximum highs reaching up to 33°C (92°F). Although June has lower total precipitation at 87 mm (3.4 in), it still rains on about 15 days, with humidity slightly lower at 85%. For more detailed information on June weather in this region, check out Greenville weather in June.

December and July present stark contrasts in weather conditions. In December, temperatures can drop to a chilling minimum of -7°C (19°F), with an average of 8°C (47°F) and a maximum reaching 24°C (75°F). The month sees significant precipitation, averaging 130 mm (5.1 in) over about 10 days and maintaining high humidity levels at 88%. In contrast, July boasts warmer temperatures, with a minimum of 16°C (61°F) and an average high of 26°C (80°F), peaking at 35°C (95°F). Precipitation is less prolific in July, totaling 93 mm (3.7 in) across 16 days, accompanied by slightly lower humidity at 83%. For a detailed look at July weather, check out Greenville weather in July.

December and August present contrasting weather patterns. In December, temperatures range from a brisk minimum of -7°C (19°F) to a pleasant maximum of 24°C (75°F), with an average of 8°C (47°F). The month sees a relatively high humidity level of 88% and experiences precipitation on approximately 10 days, totaling around 130 mm (5.1 in). In stark contrast, August boasts a much warmer climate, with minimum temperatures starting at 15°C (60°F) and peaking at a hot 35°C (96°F), with an average temperature of 26°C (79°F). Although August has slightly lower precipitation at 121 mm (4.8 in), it occurs over more days, with rainfall expected on about 14 days, and the humidity is comparatively less at 76%. For a more detailed view of the August climate, you can check Greenville weather in August.

In comparing the weather of December and September, we see distinct differences in temperature and humidity levels. December experiences a notable chill with minimum temperatures dipping as low as -7°C (19°F), while September boasts milder averages, starting at a minimum of 9°C (48°F) and peaking at a warm 35°C (95°F). Both months see a similar amount of precipitation—December with 130 mm (5.1 in) across 10 days, and September slightly higher at 132 mm (5.2 in) over just 9 days. Humidity is also affected by the season, with December averaging a high 88% compared to September's more comfortable 76%. For more specific insights into September's weather patterns, you can visit Greenville weather in September.

When comparing the weather in December to that in October, we notice distinct differences in temperature and humidity levels. December experiences a wider temperature range with a minimum of -7°C (19°F) and a maximum of 24°C (75°F), averaging around 8°C (47°F). In contrast, October's temperatures are generally milder, ranging from a minimum of 0°C (32°F) to a maximum of 36°C (97°F), with an average of 18°C (65°F). Both months receive similar amounts of precipitation, approximately 130 mm (5.1 in), over about 10 days. However, December boasts a higher humidity level at 88% compared to October's 80%. For more detailed information, visit Greenville weather in October.

December weather tends to be slightly cooler and wetter compared to November. In December, the average temperature ranges from a minimum of -7°C (19°F) to a maximum of 24°C (75°F), while November sees temperatures between -5°C (24°F) and 26°C (79°F). Additionally, December experiences greater precipitation, with about 130 mm (5.1 in) over 10 days, compared to November's 95 mm (3.7 in) over just 8 days. Despite both months sharing the same humidity level of 88%, the increased rainfall in December indicates a shift towards a wetter climate as the year ends. For more detailed insights, visit Greenville weather in November.

Compare Greenville's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in Greenville

As December settles over Greenville, residents experience a notable shift in weather patterns compared to the milder months preceding it. The crisp air brings a refreshing chill, with temperatures dipping significantly, allowing for an invigorating winter atmosphere. Precipitation increases, leading to a soggier landscape, while heightened humidity adds a unique twist to the season's feel. This month is characterized by ten days of measurable rainfall, transforming the city into a winter wonderland despite the occasional cold snap. Insightful visitors can explore the nuances of Greenville's shifting weather by visiting Greenville Climate.