Last updated: February 24, 2025
In January, Shasta Lake experiences a diverse weather pattern characterized by a maximum temperature of 21°C (69°F) and a chilly average of 7°C (45°F), dipping to a brisk -5°C (24°F) at night. This month witnesses notable precipitation, accumulating to 257 mm (10.1 in) over approximately 13 days, contributing to the area's lush landscape. With humidity levels soaring at 86%, the air feels fresh and invigorating, setting a picturesque scene for both residents and visitors alike. The blend of cool temperatures and significant rainfall shapes a unique winter experience in this scenic part of the United States.
In January, Shasta Lake experiences a diverse temperature range that sets the stage for its seasonal transitions. With minimum temperatures dipping as low as -5°C (24°F), the chilly nights contrast sharply with the daytime highs soaring to 21°C (69°F), resulting in an average temperature of 7°C (45°F). This month marks the beginning of a gradual warming trend leading into the spring, with February and March showcasing increased temperatures and more varied conditions, as maximums rise to 27°C (80°F) by the end of March. The coldest nights gradually give way to milder evenings, hinting at the rapid temperature shifts that will characterize the latter months. Overall, January serves as a chilly yet intriguing precursor to the warm embrace of the forthcoming seasons at Shasta Lake.
In January, Shasta Lake experiences its highest precipitation of the year, accumulating a substantial 257 mm (10.1 in) over 13 days. This sets a strong tone for the winter months, with only slightly lower precipitation recorded in February at 229 mm (9.0 in), showcasing a robust wet season. A gradual decline is evident as March follows with 217 mm (8.6 in), while the weather begins to shift notably by April when totals drop to 116 mm (4.6 in). The pattern continues into May and June, where precipitation wanes significantly, culminating in nearly dry conditions during the summer months of July and August. This cyclical trend highlights the region’s characteristic wet winters contrasted against dry summers, facilitating a unique ecosystem dependent on this seasonal precipitation rhythm.
In January, Shasta Lake experiences a notable humidity level of 86%, setting the tone for a winter season rich in moisture. This relatively high humidity persists into February, slightly increasing to 87%, before stabilizing again at 86% in March. As spring approaches, humidity begins its gradual decline, dropping to 83% in April and continuing to decrease through May and June, reaching a low of 67%. The trend shifts dramatically in the summer months, with July recording a mere 56%, and August hitting an all-time low of 42%. The arrival of autumn brings a slight rebound, with humidity climbing back to 67% in October. However, as the year closes, humidity levels rebound once again to 86% in both November and December, illustrating the cyclical pattern of high humidity during the winter months contrasted with the drier summer season.
In January, Shasta Lake experiences a moderate UV Index of 3, indicating the need for some sun protection during outdoor activities, with a burn time of around 30 minutes. As the month transitions into February, the UV Index slightly increases to 4, but still remains in the moderate category. The trend shifts dramatically in March, where the UV Index jumps to 7, signaling a transition to high exposure, and the burn time reduces to 25 minutes. This pattern of rising UV levels continues into the spring, peaking at 11 in both May and June, marking an extreme threat where just 10 minutes of sun can lead to burns. As summer fades into fall, the UV Index decreases, yet notable high readings persist through September at 9. By October, the exposure returns to high with an index of 6, before dipping back to a moderate 4 in November and returning to 3 in December. This cyclical trend emphasizes the importance of sun safety as Shasta Lake moves from winter to the intensity of summer. For more information, visit Shasta Lake UV Index.
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In Shasta Lake, United States, January ushers in the year with 114 hours of sunshine, setting a modest tone that gradually lifts as winter gives way to spring. As the months progress, sunlight steadily increases, peaking in the sunnier summer months, with July boasting an impressive 401 hours. The transformation is striking: from February's 186 hours to June's 388 hours, the burgeoning warmth and brightness invite outdoor exploration. Following the summer zenith, the daylight begins to wane again, tapering off to 275 hours in October and further decreasing to 162 hours by December. This dynamic pattern demonstrates a beautiful cycle of varying sunlight that defines the region's seasonal charm, ensuring that each month offers a unique embrace of nature's brilliance.
In Shasta Lake, January ushers in a modest 30% chance of sunny weather, marking it as one of the cloudier months of the year. As the seasons transition, February shows a noticeable increase, with sunny days jumping to 52%, indicating a gradual shift towards brighter skies. This upward trend continues into March and April, where chances rise to 58% and 73%, respectively, paving the way for a sunnier spring. The growth in sunlight peaks during the summer months, particularly in July and August with an impressive 86% and 91%, while later months like September and October still boast significant sunshine, though at 82% and 49%, respectively. Overall, January may be the tail end of winter's embrace in Shasta Lake, but it sets in motion a promising trajectory toward sunnier days ahead.
January marks the beginning of a gradual shift in daylight duration in Shasta Lake, United States, where the sun graces the sky for 9 hours. As the month progresses into February, daylight increases to 10 hours, signaling the first stirrings of spring. By March, this upward trend continues, offering 11 hours of sunlight and hinting at the longer days ahead. The transition becomes even more pronounced in April and May, with daylight extending to 13 and 14 hours respectively, inviting outdoor activities and blossoming landscapes. As summer arrives in June, residents enjoy 15 hours of daylight, the peak of sunshine for the year. However, as July transitions into August, daylight begins to wane slightly, offering 14 and 13 hours respectively. This reduction continues into the fall months, with September and October featuring 12 and 11 hours of daylight. Finally, January returns with 9 hours again, creating a rhythmic cycle of bright and dim that characterizes the seasons of Shasta Lake.
In January, Shasta Lake experiences a gentle breeze with an average wind speed of 2.2 m/s (5 mph), a trend that captures the tranquil essence of winter in the region. As the year progresses into February and March, the winds remain consistent, slightly increasing to 2.3 m/s, maintaining that same serene atmosphere. However, a subtle shift occurs in May, with average speeds rising to 2.5 m/s (6 mph), hinting at the seasonal transition and stirring life as spring unfolds. The summer months see the wind slow down once more, particularly in July and August, where it dips to 2.0 m/s (4 mph), creating a calm that is perfect for outdoor activities. As autumn approaches, winds once again stabilize at 2.2 m/s, embracing a rhythmic pattern throughout the year that mirrors the peaceful landscape of Shasta Lake. Overall, the wind offers a soft yet consistent presence, enhancing the charm of this picturesque location year-round.
The weather in Shasta Lake changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of January'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 January, temperatures range from a chilly -5°C (24°F) at night to a mild 21°C (69°F) during the day, with an average temperature of 7°C (45°F). The month also experiences significant precipitation, totaling 257 mm (10.1 in) over 13 days, and maintains a high humidity of 86%. In contrast, February sees a slight increase in temperatures, with a minimum of -4°C (25°F) and a maximum of 27°C (80°F), averaging around 8°C (47°F). Precipitation decreases to 229 mm (9.0 in) over 10 days and humidity remains comparable at 87%. Overall, February offers slightly warmer temperatures and less rainfall compared to January, creating a more pleasant climate. For more detailed weather information, check out Shasta Lake weather in February.
In January, temperatures in the region typically range from a minimum of -5°C (24°F) to a maximum of 21°C (69°F), with an average of 7°C (45°F). The month is quite wet, seeing around 257 mm (10.1 in) of precipitation over 13 days, while the humidity remains high at 86%. In contrast, March brings slightly milder conditions, with temperatures fluctuating between a minimum of -2°C (29°F) and a maximum of 27°C (81°F), averaging 10°C (50°F). Although precipitation decreases to 217 mm (8.6 in) across 14 days, the humidity level remains consistent at 86%. For a more detailed look into March weather, you can visit Shasta Lake weather in March.
January weather is characterized by cooler temperatures, with a minimum of -5°C (24°F) and an average of 7°C (45°F), while reaching a maximum of 21°C (69°F). The month experiences significant precipitation, totaling 257 mm (10.1 in) over 13 days, and maintains a high humidity level of 86%. In contrast, April marks a transition to milder conditions, with a minimum temperature of 0°C (33°F), an average of 14°C (58°F), and a maximum of 32°C (90°F). Precipitation decreases to 116 mm (4.6 in) over just 9 days, accompanied by slightly lower humidity at 83%. For a more detailed look at the weather in April, you can visit Shasta Lake weather in April.
In January, the weather is characterized by chilly temperatures, with a minimum of -5°C (24°F) and an average of 7°C (45°F), peaking at a maximum of 21°C (69°F). The month is quite wet, experiencing 257 mm (10.1 in) of precipitation over 13 days, and a high humidity level of 86%. In contrast, May ushers in warmer conditions, with temperatures ranging from a minimum of 2°C (36°F) to an average of 19°C (66°F), topping out at a scorching 37°C (100°F). The precipitation significantly decreases to 68 mm (2.7 in) over just 5 days, accompanied by a lower humidity of 72%. For more specific weather trends, you can visit Shasta Lake weather in May.
In January, the weather is significantly cooler, with average temperatures ranging from a minimum of -5°C (24°F) to a maximum of 21°C (69°F), accompanied by considerable precipitation of 257 mm (10.1 in) over 13 days and high humidity levels at 86%. In contrast, June brings much warmer conditions with temperatures starting at 7°C (45°F) and soaring to a scorching maximum of 42°C (108°F). This month experiences vastly less precipitation, with only 10 mm (0.4 in) over just 1 day and lower humidity at 67%. For more details about the warm, dry conditions in June, check out Shasta Lake weather in June.
In January, the weather is notably colder, with temperatures ranging from a minimum of -5°C (24°F) up to a maximum of 21°C (69°F), and an average temperature of 7°C (45°F). This month also sees substantial precipitation, with around 257 mm (10.1 in) falling over 13 days, combined with high humidity levels of 86%. In contrast, July offers a stark shift, featuring much warmer conditions with temperatures ranging from a minimum of 14°C (58°F) to a sweltering maximum of 43°C (110°F), averaging 29°C (84°F). Remarkably, July experiences no precipitation at all, with humidity dropping to a comfortable 56%. For more insights on summer conditions, you can check out this link: Shasta Lake weather in July.
January and August present strikingly different weather patterns. In January, temperatures range from a chilly minimum of -5°C (24°F) to an average of 7°C (45°F), peaking at a mild 21°C (69°F). The month is characterized by significant precipitation, accumulating to 257 mm (10.1 in) over 13 rainy days, coupled with high humidity levels at 86%. Conversely, August showcases a much warmer climate, with temperatures starting at a minimum of 13°C (56°F) and averaging a sweltering 27°C (81°F), reaching a scorching high of 43°C (110°F). Remarkably, August experiences minimal precipitation, with only 1 mm (0.1 in) and not a single rainy day, leading to a much drier atmosphere with only 42% humidity. For more details on August weather specifics, you can refer to Shasta Lake weather in August.
In January, the weather is characterized by chilly temperatures, with minimums dipping to -5°C (24°F) and an average of 7°C (45°F), while conditions are often wet, featuring 257 mm (10.1 in) of precipitation over 13 days and high humidity at 86%. In contrast, September boasts significantly warmer weather, with minimum temperatures starting at 6°C (43°F) and reaching an average high of 23°C (73°F). Furthermore, September is notably drier, with only 11 mm (0.4 in) of precipitation over just 1 day and much lower humidity at 46%. For more details on September's climate, check out Shasta Lake weather in September.
January and October present stark contrasts in weather conditions. In January, temperatures can drop to a chilling -5°C (24°F) at night, with an average high of only 21°C (69°F), while experiencing a significant amount of precipitation at 257 mm (10.1 in) over 13 days, accompanied by high humidity levels averaging 86%. In sharp contrast, October boasts milder temperatures, with nighttime lows of 4°C (39°F) and average highs reaching a warm 38°C (101°F). Additionally, October sees much less rainfall, totaling just 79 mm (3.1 in) over only 4 days, and a more comfortable humidity level of 67%. For more specifics on October's weather, you can check the details here: Shasta Lake weather in October.
When comparing the weather in January to that of November, January tends to be colder, with temperatures ranging from a minimum of -5°C (24°F) to a maximum of 21°C (69°F), while November sees slightly milder conditions, with a minimum of -2°C (30°F) and a maximum of 28°C (83°F). Precipitation is notably higher in January at 257 mm (10.1 in) over 13 days, compared to November’s 152 mm (6.0 in) over just 8 days. Interestingly, both months share the same humidity level of 86%, creating a damp atmosphere especially in January. For more detailed information on November weather, you can check Shasta Lake weather in November.
January and December exhibit similar temperature averages, both hovering around 7°C (45°F), but January tends to be slightly cooler with a minimum temperature of -5°C (24°F) compared to December's -4°C (26°F). Notably, January experiences more precipitation, totaling 257 mm (10.1 in) over 13 days, while December sees less rainfall at 177 mm (7.0 in) across 12 days. Despite these differences, both months share an identical humidity level of 86%, contributing to the damp feel typical of winter in this region. For more detailed information on December weather, check out Shasta Lake weather in December.
January in Shasta Lake brings a refreshing contrast to the region's typically warmer months. While maximum temperatures can reach a pleasant 21°C (69°F), the average chill of 7°C (45°F) and occasional dips to -5°C (24°F) create a crisp atmosphere, ideal for those seeking a winter escape. With 257 mm of rain distributed over about half the month, January is characterized by increased precipitation, contributing to the area's lush landscapes. The higher humidity level of 86% can make the air feel particularly brisk, adding a unique charm to winter activities. For those interested in a deeper dive into the seasonal shifts in weather, explore Shasta Lake Climate for a comprehensive overview.