Last updated: February 24, 2025
January in Mount Shasta offers a dramatic winter experience, with average temperatures hovering around 1°C (35°F), where visitors can expect maximum highs of 14°C (58°F) and chilling lows dropping to -19°C (-3°F). The month is characterized by significant precipitation, amassing 227 mm (8.9 in) over 13 days, contributing to the region's lush, white landscape. With humidity levels averaging 86%, January envelops this majestic mountain in a cold, moist embrace, creating an enchanting atmosphere perfect for winter sports enthusiasts and nature lovers alike.
In January, Mount Shasta experiences a cold embrace, marked by a chilling minimum temperature of -19°C (-3°F), setting the stage for its icy landscape. The average temperature hovers around 1°C (35°F), providing a stark contrast to the occasional daytime highs that can reach up to 14°C (58°F). As winter progresses into February, a gradual warming trend emerges, as the minimum improves to -13°C (8°F) and the maximum nudges closer to 18°C (64°F). This pattern continues with increasing average temperatures in March and April, showcasing a transition towards milder conditions. Notably, despite the cold, the variation in temperature highlights the potential for both frigid adventures and sunny winter days, inviting visitors to experience the enchanting beauty of this mountainous region.
In January, Mount Shasta experiences a significant amount of precipitation, totaling 227 mm (8.9 in) over the month, and arrives mostly through approximately 13 rainy days. This sets the tone for the winter season, as January marks the peak of the region's wet weather, with February closely following at 218 mm (8.6 in) but with only 11 days of rain, hinting at a slight dry downtrend. The trend continues into March, where precipitation decreases to 204 mm (8.0 in), even though it sees an increase in rainy days to 16. As spring approaches, the precipitation levels drop significantly, showcasing a clear seasonal pattern—from January's robust rainfall to April's 121 mm (4.8 in) and May's tapering to just 87 mm (3.4 in), indicating a gradual transition to drier months ahead. Overall, January serves as a vital month for replenishing water resources in Mount Shasta, setting the stage for the seasonal shifts that follow.
In January, Mount Shasta experiences a notable humidity level of 86%, perfectly positioning it within the chill of winter. This high humidity persists into February, increasing slightly to 87%, before leveling off again in March at 86%. As spring approaches, the air begins to dry, with humidity dropping to 83% in April. The transition continues into summer, where a more significant decline occurs, reaching a low of 42% in August. This trend of decreasing humidity continues through the warmer months, with July and August showing the driest conditions. As autumn returns, the humidity rises again, notably climbing back to 86% by November and December, marking a return to the moist air characteristic of winter in Mount Shasta. Overall, the seasonal fluctuations highlight a clear pattern: winter and late fall are marked by higher humidity, while summer sees a significant drop.
In January, Mount Shasta experiences a moderate UV Index of 3, with a burn time of 30 minutes—a reminder to enjoy the winter scenery while still protecting your skin. As the month progresses into February, the UV intensity rises slightly to 5, maintaining the moderate exposure category. This gradual increase sets the stage for a significant leap in spring, with March and April bringing a surge in UV Index levels to 8 and 9, respectively, indicating a transition to very high exposure and a sharp reduction in burn time to just 15 minutes. The summer months peak in UV Index intensity, reaching an extreme level of 11 in May and July, while June tops the chart at 12, emphasizing the importance of sun safety during this time. As the year winds down, UV exposure decreases again, dropping back to moderate levels by November and December with an index of 4 and 3. This cyclical pattern highlights the need for year-round sun protection, even in the colder months. For a detailed look at daily UV levels, check out the Mount Shasta UV Index.
UV Risk Categories
January in Mount Shasta welcomes the year with 111 hours of sunshine, a modest start that hints at brighter days ahead. As winter transitions to spring, the sunlight gradually increases, reaching 183 hours in February and peaking to a vibrant 228 hours by March. This upward trend continues through April, where the sunlight bathes the landscape for 282 hours, and May brings a delightful 352 hours. The summer months really shine, with June, July, and August showcasing an impressive peak, boasting 386, 402, and 356 hours respectively. As autumn settles in, the sunshine starts to wane, with September offering 309 hours, followed by a steady decline through October and November, where the days dwindle to 274 and 196 hours. By the time December rolls around, the year closes with 160 hours of light, a reflective contrast to those sun-drenched summer months, reminding us of the beautiful cycle of seasons in this picturesque region.
In Mount Shasta, January brings a modest 26% chance of sunny weather, setting the stage for a tranquil winter landscape. As the year progresses, the likelihood of sunshine steadily increases, with February jumping to 44% and March reaching 54%. Notably, spring ushers in a dramatic shift; by April, the sun shines 70% of the time, and this sunny trend continues into the summer months, peaking at 84% in July. This steady ascent highlights how January's comparatively gray skies soon give way to a much brighter climate, inviting outdoor enthusiasts to look forward to the sunnier days ahead as the seasons change.
In Mount Shasta, January ushers in a modest 9 hours of daylight, marking the year's darkest month. As winter recedes, February brings a slight increase, with daylight extending to 10 hours, setting the stage for a gradual transition into spring. By March, the daytime lengthens to 11 hours, and this trend continues, reaching 13 hours in April and peaking at 15 hours in June, filling the region with vibrant energy. As summer wanes, daylight begins to retract, with 14 hours in July and gently descending to 9 hours again by November, creating a rhythmic cycle that mirrors the changing seasons, adding to the charm and beauty of Mount Shasta throughout the year.
In Mount Shasta, January brings a gentle breeze with an average wind speed of 2.2 m/s (5 mph), setting a tranquil tone for the year ahead. As winter transitions into spring, wind speeds experience a slight uptick, peaking in March at 2.4 m/s (5 mph), before gradually tapering off again. April sees a minor decrease to 2.1 m/s, which hints at the variability of the transition seasons. Interestingly, while July and August cool down to 1.9 m/s (4 mph), the winds remain relatively calm, contributing to warm summer days. This pattern of slightly lower wind speeds persists through the fall and into winter, with November and December also echoing the same tranquil trend at 1.9 m/s and 2.0 m/s respectively. Overall, the wind in Mount Shasta reveals a serene rhythm that reflects the region's seasonal shifts, offering both residents and visitors a peaceful atmospheric experience throughout January and beyond.
The weather in Mount Shasta 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 Mount Shasta and find detailed weather information for every month.
January and February present a gradual warming trend in weather conditions. In January, the temperatures range from a chilly minimum of -19°C (-3°F) to an average of 1°C (35°F), reaching a maximum of 14°C (58°F). This month sees significant precipitation, with 227 mm (8.9 in) falling over 13 days, alongside high humidity at 86%. In contrast, February experiences milder temperatures, with a minimum of -13°C (8°F) and an average of 2°C (36°F), peaking at 18°C (64°F). Precipitation decreases slightly to 218 mm (8.6 in) over 11 days, and humidity remains nearly the same at 87%. For more details on February conditions, you can check out Mount Shasta weather in February.
January and March exhibit notable differences in weather patterns, though both months share high humidity levels of 86%. In January, the temperatures range from a minimum of -19°C (-3°F) to a maximum of 14°C (58°F), with an average of 1°C (35°F). The month sees significant precipitation, totaling 227 mm (8.9 in) over 13 days. In contrast, March enjoys slightly milder temperatures, with a minimum of -15°C (6°F), an average of 3°C (38°F), and a maximum reaching 20°C (68°F). Although precipitation is slightly lower at 204 mm (8.0 in) over 16 days, March's warmer conditions signal a transition towards spring. For a detailed look at the weather in March, check out Mount Shasta weather in March.
January and April present a stark contrast in weather conditions. In January, temperatures can plummet to a minimum of -19°C (−3°F), with an average of 1°C (35°F) and a maximum reaching 14°C (58°F). The month is characterized by significant precipitation, with 227 mm (8.9 in) over approximately 13 days and high humidity levels of 86%. In contrast, April brings milder weather, with temperatures ranging from a minimum of -6°C (22°F) to an average of 7°C (45°F) and a maximum of 25°C (77°F). Precipitation is reduced to 121 mm (4.8 in) over about 10 days, and humidity slightly decreases to 83%. For those interested in exploring April's weather in greater detail, you can check out Mount Shasta weather in April.
January and May present notably contrasting weather conditions. In January, temperatures can plummet to a minimum of -19°C (-3°F), with an average hovering around 1°C (35°F) and occasional highs reaching 14°C (58°F). The month is characterized by significant precipitation, totaling 227 mm (8.9 in) over 13 rainy days, accompanied by high humidity levels at 86%. Conversely, in May, the climate begins to warm up, with temperatures ranging from a minimum of -5°C (24°F) to a maximum of 30°C (86°F), and an average temperature of 12°C (54°F). The precipitation in May drops significantly to 87 mm (3.4 in) over just 9 days, with humidity levels decreasing to 72%. For a closer look at the specific weather patterns during this month, visit Mount Shasta weather in May.
In January, Mount Shasta experiences a frigid climate, with temperatures ranging from a chilling -19°C (-3°F) at night to a maximum of 14°C (58°F) during the day, resulting in an average of around 1°C (35°F). The month is characterized by significant precipitation, averaging 227 mm (8.9 in) over approximately 13 days, contributing to the high humidity of 86%.
In contrast, June brings a warm and vibrant atmosphere, with minimum temperatures rising to 0°C (32°F) and daytime highs reaching up to 35°C (96°F), yielding an average of 18°C (64°F). The precipitation is considerably lower, only 27 mm (1.1 in) over just 4 days, and the humidity drops to a more comfortable 67%. For a more detailed look at the delightful weather conditions during this month, check out Mount Shasta weather in June.
The weather in January is characterized by chilly temperatures, with a minimum of -19°C (−3°F) and an average of around 1°C (35°F), while July brings a stark contrast with warmer temperatures ranging from a minimum of 8°C (47°F) to an average of 23°C (73°F) and a maximum reaching up to 37°C (99°F). January experiences significant precipitation, totaling 227 mm (8.9 in) over 13 days, and high humidity at 86%, whereas July sees minimal precipitation of only 5 mm (0.2 in) across just one day and lower humidity at 56%. For more details on the warm, dry climate during this summer month, please visit Mount Shasta weather in July.
January and August showcase strikingly different weather patterns. In January, temperatures plummet, with lows reaching -19°C (-3°F) and an average of just 1°C (35°F), while precipitation is high at 227 mm (8.9 in) over 13 days, leading to a frigid and damp environment characterized by 86% humidity. In contrast, August experiences a significant warm-up, with temperatures ranging from a minimum of 7°C (44°F) to a maximum of 37°C (98°F) and a much milder average of 22°C (71°F). Precipitation in August is minimal at only 9 mm (0.4 in) over just 2 days, resulting in a much drier atmosphere and lower humidity at 42%. For more details on specific conditions, check out Mount Shasta weather in August.
January and September display stark contrasts in weather conditions. In January, temperatures can plummet to a minimum of -19°C (-3°F), with an average temperature of 1°C (35°F) and a maximum of 14°C (58°F). This month sees significant precipitation, averaging 227 mm (8.9 in) over 13 days, contributing to a high humidity level of 86%. In contrast, September offers a much milder climate, with temperatures ranging from a minimum of -1°C (30°F) to a maximum of 36°C (96°F) and an average of 17°C (63°F). Precipitation drops dramatically to just 23 mm (0.9 in) over only 4 days, accompanied by a much more comfortable humidity of 46%. For more information, you can check Mount Shasta weather in September.
In January, temperatures can plummet to a minimum of -19°C (-3°F), with an average temperature of around 1°C (35°F) and a maximum reaching just 14°C (58°F). The month is characterized by significant precipitation of 227 mm (8.9 in) over 13 days, coupled with high humidity levels of 86%. In contrast, October experiences milder conditions, with a minimum temperature of -4°C (25°F), an average of 10°C (51°F), and a maximum soaring to 31°C (87°F). Precipitation in October is notably lower at 76 mm (3.0 in), spread over only 5 days, and the humidity decreases to 67%. For more insights specific to this month, you can check Mount Shasta weather in October.
In comparison, January weather is notably colder than November, with minimum temperatures dropping to -19°C (−3°F) compared to November’s milder lows of -14°C (7°F). The average temperature in January is around 1°C (35°F), while November enjoys a warmer average of 5°C (42°F). Furthermore, January experiences more precipitation, totaling 227 mm (8.9 in) over 13 days, whereas November sees 128 mm (5.1 in) across just 9 days. Despite both months having the same humidity level of 86%, the overall conditions in January are more severe. For more details, check out Mount Shasta weather in November.
January's weather is characterized by a colder minimum temperature, dropping to -19°C (-3°F), while December has a milder minimum of -10°C (14°F). Both months share the same average temperature of around 1°C (34°F), but January experiences a slightly higher maximum temperature of 14°C (58°F) compared to December's 17°C (63°F). Precipitation is notably more abundant in January, totaling 227 mm (8.9 in) over 13 days, whereas December sees 153 mm (6.0 in) over 12 days. Humidity levels remain constant at 86% for both months, creating chilly and damp conditions throughout. For more detailed insights into December’s climate, check out Mount Shasta weather in December.
January in Mount Shasta presents a stark contrast to the milder conditions of other months. With an average temperature hovering around 1°C (35°F), this is the coldest time of the year, where frigid nights can plunge to -19°C (-3°F). Precipitation is fairly high during this month, with about 227 mm (8.9 in) falling over approximately 13 days, making it a noteworthy wet month. The notable humidity level of 86% adds to the chilling atmosphere, enveloping the landscape in a winter wonderland. These characteristics make January uniquely captivating and a prime time for winter enthusiasts. For a deeper understanding of the changing seasons, explore the full details at Mount Shasta Climate.