Last updated: February 24, 2025
In December, Grand Junction, United States experiences a chilly climate with maximum temperatures averaging 15°C (59°F) and minimum lows plunging to -22°C (-8°F). The month is characterized by an average temperature of -3°C (28°F), creating a brisk atmosphere perfect for winter activities. With 37 mm (1.5 in) of precipitation over approximately seven days, residents can expect a mix of snow and light rain, contributing to the region's winter charm. Adding to this wintry scene, the humidity often hovers around 90%, making the air feel even cooler and crisper. Whether you’re cozying up indoors or exploring the outdoors, December in Grand Junction offers a distinctly festive and invigorating experience.
In December, Grand Junction, United States, experiences a notable chill as temperatures plummet, with minimums around -22°C (-8°F) and an average hovering near -3°C (28°F). The region transitions from the milder conditions of November, where temperatures were slightly more forgiving. While the maximums can reach up to 15°C (59°F), the significant drop in average temperatures signals the approach of winter. This month marks a distinct shift, highlighting Grand Junction's cold climate as it wraps up the year, inviting a picturesque winter landscape that contrasts sharply with the warm summer highs earlier in the year.
In December, Grand Junction experiences an average precipitation of 37 mm (1.5 in), with rainfall occurring on about 7 days throughout the month. This amount reflects a slight dip from the wetter months preceding it, as seen in October and November. Notably, December's precipitation patterns contribute to a gradual transition into the drier winter months, with rainfall becoming less frequent but still providing an essential moisture boost before the cold sets in. Overall, the data illustrates a consistent seasonal rhythm, where late fall gives way to the potential for winter weather, maintaining a balance that is crucial for the region's ecosystems.
In Grand Junction, December brings a significant return to high humidity, mirroring the dampness felt at the year's start, with levels soaring back to 90%. This increase contrasts sharply with the low humidity experienced in the summer months of June and July, where figures dipped to a mere 39%. As the seasons shift, humidity begins its gradual ascent from the dry summer to the wetter months, peaking again in November before settling at December's high. This cyclical trend highlights a notable fluctuation, illustrating how Grand Junction transitions from arid summers to moisture-laden winters, creating a dynamic climatic tapestry throughout the year.
In Grand Junction, the December UV Index falls to 4, indicating a moderate exposure level that allows for a burn time of 30 minutes before the skin is at risk. This month marks a notable decrease from the extreme levels seen during the height of summer, where the UV Index peaked at 12 in both June and July, necessitating only a mere 10 minutes of sun exposure before experiencing potential harm. The gradual decline from the extreme values in the warmer months illustrates a clear seasonal trend towards lower UV radiation, which continues into the colder months, ultimately returning to a moderate risk by December. As you enjoy the outdoors, understanding these variations can help you protect your skin effectively. For more detailed information, visit Grand Junction UV Index.
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As December settles in Grand Junction, the days grow shorter, offering 220 hours of sunshine. While this marks a dip from the vibrant 360 hours enjoyed in May, the sun-drenched landscape continues to radiate warmth in the winter chill. Interestingly, the year begins with a humble 172 hours in January, gradually ramping up to a peak of 382 hours during the summer months of June and July. By autumn, sunshine begins to wane, with November providing 244 hours before winter officially rolls in. Despite the seasonal decline, December's sunlight still plants seeds of hope for the sunnier months ahead, inviting residents to embrace the beauty of a desert winter.
December in Grand Junction, United States, presents a fairly optimistic likelihood of sunny weather, with a 54% chance of sunshine. As the year winds down, sunshine remains comparable to earlier winter months like January and February, which also hover around the mid-50s for sunny days. Interestingly, the trend throughout the year shows a noticeable peak during the warmer months, notably August and September, where sunny probabilities soar to 73% and 75%, respectively. This indicates a seasonal shift towards sunnier weather as summer approaches, but December still holds its own amidst a predominantly dry winter season, echoing the region's overall pleasant climate.
As the year winds down, December in Grand Junction experiences a return to shorter daylight hours, offering just 9 hours of sun each day. This marks a decline from the 14 hours enjoyed during the peak of summer months in June, July, and August. The gradual descent in daylight duration begins in late fall, and by December, the city sees a full circle back to the 9 hours typical in January. The trend highlights how the region shifts from the vibrant, sun-soaked days of spring and summer to the serene and quieter months of late fall and winter, inviting residents and visitors alike to embrace the cozy indoor activities that accompany the shorter daylight hours.
As December rolls into Grand Junction, the winds whisper a gentle tune, averaging 1.9 m/s (4 mph), slightly up from the November lull. This subtle uptick mirrors the gradual increase in wind speeds observed from the beginning of the year, where winter months tend to have calmer breezes. The gentle winds of December provide a stark contrast to the more robust gusts of spring, which peak notably in April and May. As the year closes, the wind remains a constant yet soft companion, embodying the tranquil spirit of the season while hinting at the invigorating breezes that lie ahead.
The weather in Grand Junction 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 Grand Junction and find detailed weather information for every month.
In December, the weather generally presents milder temperatures with a minimum of -22°C (-8°F) and an average of -3°C (28°F), peaking at a maximum of 15°C (59°F). The month sees around 37 mm (1.5 in) of precipitation over seven days, with humidity consistently high at 90%. Conversely, January tends to be slightly colder, with a minimum temperature of -23°C (-9°F) and an average of -4°C (24°F), while the maximum drops to 12°C (54°F). Precipitation increases slightly to 40 mm (1.6 in) over the same number of days, maintaining the high humidity level at 90%. For a detailed look at January's weather, check out Grand Junction weather in January.
December and February exhibit quite similar winter conditions, yet there are notable differences in temperature and precipitation patterns. In December, temperatures range from a minimum of -22°C (-8°F) to a maximum of 15°C (59°F), with an average of -3°C (28°F). The month sees about 37 mm (1.5 in) of precipitation over 7 days and maintains a high humidity level of 90%. In contrast, February experiences slightly colder conditions, with minimum temperatures reaching -23°C (-10°F) and maximums of 14°C (57°F), while the average temperature is a bit higher at -2°C (29°F). February also has increased precipitation, totaling 49 mm (1.9 in) over 9 days, and a humidity level marginally lower at 89%. For a detailed look at the weather trends, you can check out Grand Junction weather in February.
In December, temperatures in Grand Junction can drop as low as -22°C (-8°F), with average highs around -3°C (28°F) and a maximum reaching 15°C (59°F). The month sees a fair amount of moisture, with 37 mm (1.5 in) of precipitation over about 7 days, accompanied by high humidity levels of 90%.
In contrast, March offers a more moderate climate, with temperatures ranging from a minimum of -17°C (2°F) to an average of 4°C (39°F) and maximums peaking at 23°C (74°F). Precipitation increases to 69 mm (2.7 in) over approximately 11 days, while humidity decreases slightly to 81%.
For further details on the weather conditions in March, you can check Grand Junction weather in March.
In December, temperatures can drop as low as -22°C (-8°F), with an average of -3°C (28°F), while the maximum reaches a modest 15°C (59°F). The month is characterized by high humidity at 90% and some precipitation spread over 7 days, totaling 37 mm (1.5 in). In contrast, April brings a significant warmth with minimum temperatures around -7°C (21°F) and an average reaching 9°C (49°F), peaking at a pleasant 27°C (81°F). Precipitation slightly decreases to 33 mm (1.3 in) and occurs over 8 days, with humidity dropping to 74%. For a closer look at the specifics of April weather, check out Grand Junction weather in April.
December and May showcase a stark contrast in weather patterns. In December, temperatures can plummet to a minimum of -22°C (-8°F), with an average of -3°C (28°F) and a maximum of just 15°C (59°F), making it the coldest month. Precipitation is relatively low at 37 mm (1.5 in), occurring over about 7 days, while the high humidity of 90% adds to the chilly feel. In contrast, May brings a significant warm-up, with temperatures ranging from a minimum of -3°C (27°F) to a comfortable average of 15°C (59°F) and peaking at 32°C (90°F). The month experiences slightly more precipitation at 42 mm (1.7 in) across 8 days, but the humidity drops to 58%, creating a much more pleasant atmosphere. For more detailed insights on May weather, check out Grand Junction weather in May.
December and June present starkly contrasting weather conditions. In December, temperatures can plummet to a chilling minimum of -22°C (-8°F), with an average temperature hovering around -3°C (28°F), while maxing out at a relatively mild 15°C (59°F). This month also experiences high humidity levels at 90%, alongside 37 mm (1.5 in) of precipitation over about 7 days. In sharp contrast, June boasts a much warmer climate, with minimum temperatures starting at 2°C (37°F) and average highs reaching a balmy 22°C (72°F), peaking at an impressive 38°C (100°F). The precipitation in June is lower, at 26 mm (1.0 in) over just 4 days, combined with significantly reduced humidity of 47%. For more details on June weather, you can visit Grand Junction weather in June.
December and July present stark contrasts in weather conditions. In December, temperatures can plunge as low as -22°C (-8°F), with an average temperature of around -3°C (28°F) and a maximum reaching 15°C (59°F). This month also sees high humidity at 90% and about 37 mm (1.5 in) of precipitation spread over seven days. In sharp contrast, July boasts a much warmer climate, featuring a minimum temperature of 9°C (49°F) and an average of 25°C (77°F), with maximum temperatures soaring to 38°C (101°F). The humidity in July drops significantly to 39%, and the precipitation is slightly lower at 34 mm (1.3 in), also occurring over seven days. For those interested in more detailed insights, check out Grand Junction weather in July.
December and August showcase a stark contrast in weather conditions. In December, temperatures can plummet to a minimum of -22°C (-8°F), with an average of -3°C (28°F) and a maximum of 15°C (59°F). The month is characterized by high humidity at 90% and experiences about 37 mm (1.5 in) of precipitation over seven days. In sharp contrast, August enjoys much warmer temperatures, with a minimum of 8°C (46°F), an average of 23°C (74°F), and a high of 36°C (97°F). This summer month sees lower humidity at 39% and less precipitation, totaling 29 mm (1.1 in) over five days. For a detailed look at weather conditions during August, visit Grand Junction weather in August.
December and September display stark contrasts in weather patterns. December features much lower temperatures, with a minimum of -22°C (-8°F) and an average of -3°C (28°F), while September enjoys milder conditions, reaching a maximum of 35°C (96°F) and an average of 19°C (66°F). Precipitation levels are similar, with December receiving 37 mm (1.5 in) over 7 days and September slightly higher at 40 mm (1.6 in) over 6 days. Additionally, December's humidity is notably high at 90%, compared to September's more moderate 53%. For more detailed insights on September weather, check out Grand Junction weather in September.
December typically showcases much colder temperatures compared to October, with average daytime highs around -3°C (28°F) versus October's average of 9°C (49°F). While both months experience considerable precipitation—37 mm (1.5 in) in December and 55 mm (2.2 in) in October—October's weather is generally milder and drier, with lower humidity levels at 72% compared to December's high of 90%. For a deeper dive into October’s climate specifics, you can visit Grand Junction weather in October.
December weather presents a sharper chill compared to November, with average temperatures dropping significantly from November's mild 4°C (39°F) to a frosty -3°C (28°F). Notably, December experiences colder minimum temperatures, plunging to -22°C (-8°F), while November’s lowest point is a relatively warmer -16°C (4°F). Additionally, December sees more precipitation, totaling 37 mm (1.5 in) over 7 days compared to November’s 23 mm (0.9 in) over just 4 days. The humidity also rises slightly in December, averaging 90% compared to 84% in November. For those interested in more details on November's weather, you can check Grand Junction weather in November.
In December, Grand Junction experiences a remarkable shift in weather, setting it apart from other months of the year. With cooler temperatures that can dip significantly at night, the contrast between daytime warmth and nighttime chill becomes pronounced. As humidity levels soar to around 90%, the air feels crisp and refreshing, often resulting in precipitation that adds a touch of seasonal charm. The month usually showcases a mix of clear skies and wintery days, differentiating it from the warmer, drier spells found in the preceding months. For a deeper dive into the area's climate trends, check out Grand Junction Climate.