Last updated: February 24, 2025
December in Shasta Lake, United States presents a range of temperatures with a maximum of 22°C (72°F), an average of 7°C (45°F), and a minimum dipping to -4°C (26°F). This month is characterized by notable precipitation, totaling 177 mm (7.0 in) over 12 days, contributing to the area's lush winter landscape. The humidity levels remain high at 86%, creating a unique atmospheric experience that encapsulates the beauty and chill of winter in this picturesque region. Whether you're enjoying the serenity of the lake or the surrounding winter wilderness, December offers a transformative seasonal escape.
In December, Shasta Lake experiences a significant chill, with temperatures dipping to a minimum of -4°C (26°F). Despite the cold, the average temperature settles around a brisk 7°C (45°F), while daytime highs can reach a comfortable 22°C (72°F). This month marks a transition to winter, as temperatures continue to drop from the milder conditions of November. The trend towards cooler weather is evident, with December's readings nearly echoing January’s lows and average temperatures. However, a noteworthy aspect is the slight retention of warmth in the afternoons, hinting at the potential for sunny days amidst the winter chill. As the year draws to a close, Shasta Lake showcases its crisp beauty, inviting both nature lovers and winter enthusiasts to relish in its serene landscape.
In December, Shasta Lake experiences a notable uptick in precipitation, receiving 177 mm (7.0 in) of rain over 12 days. This pattern marks a significant contrast from the drier summer months, particularly July and August, which see almost no rain at all. As the year draws to a close, December's precipitation contributes to the overall trend of increasing moisture, peaking during the winter months, which follow a gradual decline from the heavier January rainfall of 257 mm (10.1 in). This cyclical pattern underscores the region's seasonal variability, positioning December as a crucial month for replenishing local water resources after the parched summer.
In Shasta Lake, United States, December brings a return to higher humidity levels, maintaining a significant 86%. This pattern mirrors the humidity levels seen in both January and November, highlighting a trend of elevated moisture during the winter months. As the year progresses, a noticeable drop in humidity occurs from late spring through summer, with July peaking at a low 56%. However, as autumn approaches, humidity begins to climb again, emphasizing a cyclical seasonal pattern where the cold months are consistently more humid compared to the drier summer months. This December, with its comparable humidity levels to earlier winter months, reinforces the region's characteristic moisture-laden atmosphere during the colder season.
As December arrives in Shasta Lake, the UV Index returns to a moderate level of 3, reminiscent of the more subdued readings seen in January and November. This slight dip follows a peak in the summer months, where intense levels (up to 11) were common, signaling extreme sun exposure. With a burn time of 30 minutes, it’s essential to be mindful of sun safety even during the winter. Overall, the trend shows a gradual decline in UV intensity as the year concludes, providing a welcome reminder to enjoy the outdoors while taking necessary precautions. For more detailed information, visit Shasta Lake UV Index.
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In Shasta Lake, United States, December ushers in a cozy chill with 162 hours of sunshine, marking a subtle decline after the sun-soaked summer months. As the year winds down, sunlight gradually wanes from the summer peak of 401 hours in July, reflecting a broader trend where daylight dwindles from the vibrant spring and summer to the softer hues of winter. The transitional months reveal a more gradual decrease, starting from 284 hours in April to 200 hours in November, creating a gentle rhythm in Shasta Lake's climatological dance. By December, while the sun may shine less frequently, the crisp air and shimmering landscapes still offer charm, inviting residents and visitors alike to bask in the serene beauty of the season.
As December rolls in, the chance of sunny weather in Shasta Lake, United States, stands at 35%, indicating a noticeable dip following the milder autumn months. This trend presents a striking contrast to the vibrant sunshine of summer, where the likelihood peaks at a remarkable 91% in August. The data reveals a consistent decline in sunny days as we transition from the lush abundance of spring, which boasts a 73% chance in April, to the cooler, more overcast December. With the holiday spirit in the air, while December offers the lowest probability of sun since January, there's still a glimmer of hope for those seeking bright winter moments amidst the season’s chill.
As December rolls in, daylight in Shasta Lake, United States, settles at 9 hours, mirroring the shorter days seen in November. This month signals the tail end of the gradual tapering of sunlight that began with longer days in the spring and peaked during the height of summer in June with a generous 15 hours. Following this summer peak, the daylight hours have steadily declined, offering a rhythmic contrast to the vibrant burst of sunlight in the warmer months. Observing this trend, we see that from March to June, the daylight expands, providing a bright canvas for outdoor activities, while December wraps the year in a cozy embrace as daylight diminishes once again, inviting reflection during its twilight hours.
As December settles in Shasta Lake, the wind whispers softly through the air, maintaining an average speed of 2.2 m/s (5 mph), mirroring the gentle breezes of the preceding months. This consistency reflects a noteworthy trend throughout the year, where winds generally hover between 2.0 and 2.5 m/s. It’s intriguing to observe that while summer months exhibit a slight dip, winter returns to this hallmark breeze, offering a serene atmosphere perfect for wintertime reflections by the lake. The subtle yet steady winds create a calming backdrop, enhancing the enchanting beauty of Shasta Lake during the festive season.
The weather in Shasta Lake 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 Shasta Lake and find detailed weather information for every month.
In December, temperatures range from a low of -4°C (26°F) to a high of 22°C (72°F), with an average of 7°C (45°F). The month sees about 177 mm (7.0 in) of precipitation over 12 days, and humidity remains high at 86%. In contrast, January experiences slightly cooler temperatures, with a minimum of -5°C (24°F) and a maximum of 21°C (69°F), while maintaining the same average temperature of 7°C (45°F). However, it is wetter than December, with 257 mm (10.1 in) of rainfall spread over 13 days, all while keeping the humidity at 86%, creating a consistent feel between the two months. For more detailed weather insights, you can check out Shasta Lake weather in January.
In comparing December and February weather, both months experience similar minimum temperatures around -4°C (26°F). However, February tends to be slightly warmer, with an average temperature of 8°C (47°F) compared to December’s 7°C (45°F). The maximum temperatures also rise, peaking at 27°C (80°F) in February versus December’s 22°C (72°F). Precipitation is notably higher in February, with 229 mm (9.0 in) compared to 177 mm (7.0 in) in December, despite having fewer rainy days (10 days in February versus 12 in December). Humidity remains fairly consistent, with February at 87% and December at 86%. For more detailed insights, you can explore Shasta Lake weather in February.
In comparing the weather between December and March, December typically experiences lower temperatures, with a minimum of -4°C (26°F) and an average high of 22°C (72°F). In contrast, March sees slightly milder conditions, featuring a minimum of -2°C (29°F) and a higher average maximum temperature of 27°C (81°F). While both months share the same humidity level of 86%, March has a higher total precipitation of 217 mm (8.6 in) over 14 days compared to December's 177 mm (7.0 in) over 12 days. For more specific details, you can check the Shasta Lake weather in March.
In December, temperatures can dip as low as -4°C (26°F) and typically average around 7°C (45°F), reaching a maximum of 22°C (72°F) on warmer days. The month is quite wet, with an average precipitation of 177 mm (7.0 in) over 12 days, and humidity levels are high at 86%. In contrast, April experiences a milder climate, with minimum temperatures starting at 0°C (33°F) and averaging around 14°C (58°F), peaking at 32°C (90°F). Precipitation decreases significantly to 116 mm (4.6 in) over just 9 days, and humidity also remains relatively low at 83%. For more details on the conditions during this month, check out Shasta Lake weather in April.
December and May showcase strikingly different weather patterns. In December, temperatures can drop as low as -4°C (26°F), with an average of 7°C (45°F) and highs reaching 22°C (72°F). The month is characterized by significant precipitation, totaling 177 mm (7.0 in) over approximately 12 rainy days, coupled with high humidity levels at 86%. In contrast, May experiences a milder climate, with minimum temperatures around 2°C (36°F) and averages soaring to 19°C (66°F), peaking at 37°C (100°F). Precipitation in May is much lighter, at 68 mm (2.7 in) across just 5 days, and humidity decreases to a comfortable 72%. For more detailed information on May weather, you can explore Shasta Lake weather in May.
December and June present strikingly different weather patterns. In December, temperatures can dip as low as -4°C (26°F) and average around 7°C (45°F), while reaching a maximum of 22°C (72°F). The month is characterized by considerable precipitation, averaging 177 mm (7.0 in) over 12 days, with high humidity levels at 86%. In contrast, June boasts milder minimum temperatures at 7°C (45°F) and an average of 25°C (76°F), with maximum temperatures soaring up to 42°C (108°F). Precipitation in June is scarce, averaging only 10 mm (0.4 in) and occurring just once throughout the month, accompanied by lower humidity at 67%. For more details on June weather, you can check Shasta Lake weather in June.
The contrast between December and July weather is striking. In December, temperatures range from a chilly minimum of -4°C (26°F) to a mild maximum of 22°C (72°F), with an average of 7°C (45°F). This month also sees significant precipitation, totaling 177 mm (7.0 in) over about 12 days, and high humidity levels averaging 86%. In stark contrast, July boasts much warmer temperatures, with a minimum of 14°C (58°F) and a scorching maximum of 43°C (110°F), averaging 29°C (84°F). Remarkably, July experiences no precipitation, with 0 mm recorded, and a more comfortable humidity of 56%. For more details on the warm and dry conditions, you can visit Shasta Lake weather in July.
December and August present dramatically different weather conditions. In December, temperatures range from a chilly -4°C (26°F) at the lowest to a maximum of 22°C (72°F), with an average of 7°C (45°F). The month experiences substantial precipitation, totaling 177 mm (7.0 in) over about 12 days, contributing to a high humidity level of 86%. In contrast, August boasts much warmer temperatures, with a minimum of 13°C (56°F), an average of 27°C (81°F), and soaring to a maximum of 43°C (110°F). This summer month is characterized by negligible precipitation—just 1 mm (0.1 in) across 0 days—and a much lower humidity level at 42%. To learn more about the weather specifics during August, you can view Shasta Lake weather in August.
December and September showcase striking differences in weather patterns. In December, temperatures range from a chilly -4°C (26°F) at their lowest to a mild high of 22°C (72°F), with an average temperature of 7°C (45°F). The month also sees considerable precipitation, with 177 mm (7.0 in) recorded over 12 days, coupled with high humidity at 86%. In contrast, September boasts significantly warmer conditions, with temperatures ranging from a minimum of 6°C (43°F) to a scorching maximum of 42°C (108°F), averaging 23°C (73°F). Precipitation in September is quite minimal, at just 11 mm (0.4 in) over a single day, and humidity levels are considerably lower at 46%. For more details on September weather specifics at Shasta Lake, visit Shasta Lake weather in September.
In December, the weather becomes significantly cooler, with temperatures ranging from a minimum of -4°C (26°F) to an average of 7°C (45°F) and peaking at 22°C (72°F). The month sees a substantial increase in precipitation, averaging 177 mm (7.0 in) over 12 days, and a higher humidity level of 86%. In contrast, October offers a milder climate, featuring temperatures that vary from a minimum of 4°C (39°F) to an average of 16°C (62°F), and can reach a maximum of 38°C (101°F). October experiences much less rainfall, accumulating 79 mm (3.1 in) over just 4 days, and a lower humidity level of 67%. For more detailed information, you can check Shasta Lake weather in October.
In comparing the weather of December and November, December tends to be cooler, with temperature highs averaging around 7°C (45°F) compared to November's higher average of 11°C (52°F). The maximum temperatures in December reach only up to 22°C (72°F), while November can see highs of 28°C (83°F). Precipitation increases slightly in December, with 177 mm (7.0 in) over 12 days, whereas November experiences 152 mm (6.0 in) over just 8 days. Both months maintain a similar humidity level of 86%. For more details about November conditions, you can check Shasta Lake weather in November.
December in Shasta Lake offers a distinct contrast to the warmer months, as temperatures dip significantly, averaging around 7°C (45°F) with nighttime lows reaching -4°C (26°F). This drop in temperature, coupled with an increased likelihood of rain—averaging about 177 mm (7.0 in) over 12 days—creates a refreshing, if somewhat damp, atmosphere. The high humidity at 86% can make the cold feel even more biting, enhancing the cozy, wintery vibes that December brings. As the landscape transforms into a serene winter wonderland, it's a unique time to experience Shasta Lake's charm. For more insights on what to expect throughout the year, visit Shasta Lake Climate.