Last updated: February 24, 2025
In January, Mammoth Lakes experiences a striking winter landscape characterized by a maximum temperature of 10°C (51°F), while the average dips to a chilly -5°C (24°F). The month can be particularly harsh, with minimum temperatures plummeting to -23°C (-9°F). Despite the cold, residents and visitors can expect about 130 mm (5.1 in) of precipitation over 7 days, creating a humid atmosphere with an average humidity level of 82%. This mix of temperatures and moisture not only defines the weather but also sets the stage for outdoor adventures in a breathtaking winter wonderland.
In Mammoth Lakes, January is typically one of the coldest months of the year, with temperatures ranging from a frigid -23°C (-9°F) at night to a chilly 10°C (51°F) during the day, resulting in an average temperature of -5°C (24°F). This stark cold is a prelude to the gradual warming trend that follows, as February brings slightly milder conditions, with minimal temperatures rising to -21°C (-6°F) and daytime highs reaching up to 13°C (56°F). As spring approaches, March continues this upward trajectory, showing signs of life with average temperatures creeping up to -2°C (28°F). The transition from winter to spring is especially noticeable in April and May, where temperatures significantly increase, peaking at 25°C (78°F) by the end of May. Overall, Mammoth Lakes experiences a remarkable shift from the deep freeze of January toward the welcoming warmth of late spring, making it an intriguing destination for weather enthusiasts and outdoor adventurers alike.
In Mammoth Lakes, January stands out as one of the wettest months, delivering an impressive 130 mm (5.1 inches) of precipitation over the course of approximately 7 days. This sets a rainy tone that is closely matched by February, which sees just slightly less rainfall at 129 mm (5.1 inches) but stretches over 9 days. Following this peak, precipitation takes a noticeable dip, with March experiencing only 88 mm (3.5 inches) across 10 days, and by April, it further decreases to 49 mm (1.9 inches), despite maintaining a comparable number of rainy days. The trend reveals a sharp decline into spring, where May, June, and the summer months continue with significantly less rainfall, hinting at a seasonal shift that favors drier conditions as the year progresses. This pattern not only indicates the importance of early winter precipitation for the region but also sets the stage for drier months ahead, shaping the local climate and ecology.
In January, Mammoth Lakes experiences a high humidity level of 82%, setting the stage for a winter wonderland that feels crisp yet moist. As the seasons shift into February, humidity rises slightly to 85%, creating a chilly atmosphere perfect for skiing. However, by March, humidity drops to 80%, signaling a slow transition towards spring. The trend continues downward into April with 72%, as milder weather approaches. The real shift occurs in May, where humidity plummets to 58%, allowing for more comfortable outdoor activities. This decline continues through the summer months, with July and August showcasing their lowest levels at 36% and 30%, respectively, providing a dry escape. As autumn arrives, humidity rises again, peaking in November at 78% before settling at 79% in December, hinting at winter's return. This cyclical pattern illustrates how Mammoth Lakes balances between moisture-laden winter months and the comfortable dryness of summer, creating an ever-changing climate landscape.
In January, Mammoth Lakes experiences a moderate UV Index of 5, necessitating about 30 minutes of sun exposure before a burn occurs. As winter transitions to spring, the UV Index swiftly rises, peaking in April and May at an extreme level of 13, where even short sun exposure can lead to burns in just 10 minutes. February follows with a high UV Index of 7, and by March, it escalates to 10, marking the onset of a significant increase in UV intensity. This trend continues into the summer months, peaking at the same extreme levels in June and July. As the year progresses, UV levels begin to decline again, with September and October still maintaining a very high category, while the year concludes with a moderate level of 4 in December. For more detailed information about UV exposure in this scenic location, check out Mammoth Lakes UV Index.
UV Risk Categories
In Mammoth Lakes, January serves as a stunning start to the year, basking in approximately 171 hours of sunshine. While this may seem modest compared to the sunnier months ahead, it's a delightful precursor to the vibrant transition that follows. As winter retreats, February shines brighter with 230 hours, paving the way for March, which delights sun-seekers with an impressive 282 hours. The steady increase continues into the spring, culminating in 321 hours of sunshine in April, and May brings even more warmth with 367 hours. This sunny trajectory peaks during the summer months, hitting 391 hours in July, before tapering off into the fall. Throughout the year, Mammoth Lakes transforms from winter's embrace to a sun-drenched playground, making it a year-round destination for those who thrive on both adventure and sun.
January in Mammoth Lakes sees a 47% chance of sunny weather, making it one of the more overcast months of the year. As the seasons transition into spring, the likelihood of sun steadily increases, reaching 63% in February and climbing to 72% in April. This upward trend continues as summer approaches, peaking at a sunny 91% in August. The sunshine then begins to taper off again with the arrival of fall, ultimately dropping to a low of 43% by December. This pattern highlights Mammoth Lakes' character as a place of distinct seasonal variations, with January serving as a reminder of winter's hold before brighter days return.
In Mammoth Lakes, January ushers in a modest 9 hours of daylight, marking the beginning of a gradual ascent toward longer days. As the month transitions into February, daylight increases to 10 hours, heralding the approach of spring. The upward trend continues through March and April, where daylight extends to 11 and 13 hours respectively, showcasing a steady accumulation of sunlight that enhances outdoor activities. By May, the days stretch to 14 hours, a peak that remains steady through June and July. As summer wanes, daylight gently recedes, tapering off to 13 hours in August and gradually declining through the fall months, concluding with 9 hours in December. This cyclical pattern highlights the rhythm of the seasons in Mammoth Lakes, inviting both residents and visitors to revel in the varying lengths of daylight throughout the year.
In Mammoth Lakes, January brings a gentle breeze with an average wind speed of 2.0 m/s (5 mph), a trend that continues into February. As winter transitions into spring, the wind picks up slightly in March and April, reaching 2.2 m/s (5 mph) and 2.3 m/s (5 mph) respectively. This gradual increase in wind speed marks a shift in the seasonal patterns, peaking in early summer with 2.4 m/s (5 mph) in June. Interestingly, July experiences a slight dip to 1.9 m/s (4 mph), suggesting calmer conditions during peak summer. As the year progresses into the fall and winter, the wind speeds fluctuate, with autumn representing a return to around 2.3 m/s (5 mph) in October, before gently winding down to 2.4 m/s (5 mph) in December. Overall, while January's winds remain steady, a subtle seasonal rhythm in Mammoth Lakes shapes the landscape throughout the year.
The weather in Mammoth Lakes 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 Mammoth Lakes and find detailed weather information for every month.
In January, the weather in Mammoth Lakes features a chilly minimum temperature of -23°C (-9°F) and an average of -5°C (24°F), while daytime highs reach up to 10°C (51°F). The month experiences significant precipitation, totaling 130 mm (5.1 in) over about 7 days, with humidity levels around 82%.
In contrast, February sees slightly warmer conditions, with minimum temperatures of -21°C (-6°F) and an average of -4°C (25°F), resulting in maximum temperatures peaking at 13°C (56°F). Although precipitation remains consistent at 129 mm (5.1 in), it occurs over a few more days, totaling 9, and humidity increases to 85%. For more detailed insights, check out Mammoth Lakes weather in February.
In January, temperatures in Mammoth Lakes can drop as low as -23°C (-9°F), with an average of -5°C (24°F) and a maximum reaching 10°C (51°F). The month typically sees around 130 mm (5.1 in) of precipitation over seven days, coupled with a relatively high humidity of 82%. Conversely, March brings slightly milder conditions, with temperatures ranging from a minimum of -20°C (-4°F) to a maximum of 15°C (58°F) and an average of -2°C (28°F). While precipitation decreases to 88 mm (3.5 in) over ten days, humidity remains consistent at 80%. For a more detailed look at March's weather, check out Mammoth Lakes weather in March.
In January, the weather is marked by frigid temperatures, with a minimum of -23°C (-9°F) and an average of -5°C (24°F), while the maximum reaches only 10°C (51°F). The month sees significant precipitation totaling 130 mm (5.1 in) over 7 days, accompanied by high humidity levels at 82%. In contrast, April ushers in a more temperate climate, where temperatures range from a minimum of -15°C (5°F) to an average of 2°C (36°F), and a maximum of 18°C (65°F). Precipitation drops to 49 mm (1.9 in) over just 6 days, and humidity decreases to 72%. For an in-depth look at the weather trends, check out Mammoth Lakes weather in April.
In January, Mammoth Lakes experiences frigid temperatures, with an average of -5°C (24°F) and lows plunging to -23°C (-9°F), creating a stark winter landscape. The month sees significant precipitation, totaling 130 mm (5.1 in) over approximately 7 days, while the humidity levels remain high at 82%. In contrast, May ushers in a noticeable warming trend, with average temperatures rising to 6°C (43°F) and maxing out at 25°C (78°F), albeit with a minimum of -12°C (11°F). The precipitation decreases considerably to 40 mm (1.6 in) over 9 days, and humidity drops to a more comfortable 58%. For more details on the weather in May, you can visit Mammoth Lakes weather in May.
January and June present stark contrasts in weather at Mammoth Lakes. In January, temperatures can plummet to a minimum of -23°C (-9°F), with an average around -5°C (24°F) and a maximum reaching only 10°C (51°F). The month is characterized by significant precipitation, totaling 130 mm (5.1 in) over approximately 7 days, coupled with high humidity at 82%. In contrast, June enjoys milder temperatures with a minimum of -4°C (25°F), an average of 14°C (57°F), and a pleasant maximum of 29°C (84°F). Rainfall significantly decreases to just 11 mm (0.4 in) across about 3 days, and humidity drops to 49%. This transformation in weather makes June a much drier and warmer month, ideal for outdoor activities. For more details, check this link: Mammoth Lakes weather in June.
January and July present stark contrasts in weather conditions. In January, temperatures can plunge as low as -23°C (-9°F), with an average of -5°C (24°F) and highs reaching only 10°C (51°F). The month is also characterized by significant precipitation, totaling 130 mm (5.1 in) over about 7 days, combined with high humidity levels of 82%. In contrast, July enjoys milder weather with minimum temperatures around 4°C (39°F) and averages of 18°C (64°F), peaking at 31°C (87°F). Rainfall is minimal in July, with just 17 mm (0.7 in) spread over 4 days, and the humidity drops to a pleasant 36%. For more details about the conditions in July, visit Mammoth Lakes weather in July.
January weather is characterized by frigid temperatures, with lows plunging to -23°C (-9°F) and average temperatures hovering around -5°C (24°F). The month experiences significant precipitation, totaling 130 mm (5.1 in), over roughly seven days, accompanied by high humidity levels at 82%. In stark contrast, August brings much milder conditions, with temperatures ranging from a minimum of 3°C (38°F) to a maximum of 30°C (86°F) and an average of 17°C (63°F). August sees much lower precipitation, with only 11 mm (0.4 in) of rainfall across just three days and a pleasant humidity level of 30%. For more detailed information, you can check Mammoth Lakes weather in August.
January and September present stark contrasts in weather conditions. In January, temperatures can plummet to a chilling minimum of -23°C (-9°F), with an average temperature of -5°C (24°F) and a maximum reaching only 10°C (51°F). The month is also marked by significant precipitation, totaling 130 mm (5.1 in) over about 7 days, along with high humidity at 82%. In contrast, September offers a milder climate with minimum temperatures of -6°C (22°F), an average of 13°C (56°F), and highs that can soar to 30°C (86°F). Precipitation is minimal, at just 9 mm (0.4 in) over 2 days, accompanied by a much lower humidity level of 42%. To learn more about this delightful autumn month, check out Mammoth Lakes weather in September.
In January, Mammoth Lakes experiences frigid temperatures, with average lows plummeting to -23°C (-9°F) and highs reaching only 10°C (51°F). The month sees significant precipitation, totaling around 130 mm (5.1 in) over roughly seven days, coupled with high humidity at 82%. In contrast, October offers a much milder climate, where temperatures range from a minimum of -10°C (14°F) to a comfortable maximum of 24°C (75°F). Precipitation in October is dramatically less, at just 23 mm (0.9 in) over one day and significantly lower humidity at 59%. For a detailed look at what to expect, check out Mammoth Lakes weather in October.
In comparing the weather of January and November, January is notably colder, with average temperatures around -5°C (24°F) and minimums dipping as low as -23°C (-9°F). This month experiences more precipitation, totaling 130 mm (5.1 in) across approximately 7 days, while humidity remains high at 82%. In contrast, November sees a milder climate, with average temperatures rising to 2°C (35°F) and maximums reaching up to 19°C (66°F). Precipitation in November is significantly lower, at 48 mm (1.9 in) over 4 days, and the humidity is also slightly less, at 78%. For more details on November conditions, check Mammoth Lakes weather in November.
In comparing the weather between January and December, we observe that January tends to be slightly colder, with an average temperature of -5°C (24°F) compared to December's average of -4°C (25°F). January also features more extreme lows, reaching a minimum of -23°C (-9°F), while December's lowest temperature is -19°C (-2°F). Additionally, January experiences a higher level of precipitation at 130 mm (5.1 in) compared to December's 81 mm (3.2 in), although both months have similar precipitation days, occurring 7 times each. Despite this, humidity slightly increases in January at 82%, compared to 79% in December. For a more detailed look at the December climate, you can check out Mammoth Lakes weather in December.
January in Mammoth Lakes offers a unique contrast to the other months, showcasing a chill that envelopes the region with its coldest average temperatures of the year. With maximum temperatures hovering around 10°C (51°F) yet dipping to as low as -23°C (-9°F), visitors can expect a true winter wonderland. The month also brings significant precipitation, often blanketing the area in picturesque snow, making it a favored time for winter sports enthusiasts. High humidity levels add to the crisp winter air, creating a distinct atmosphere that sets January apart from the milder or drier conditions of other seasons. For a deeper understanding of what to expect throughout the year, explore our comprehensive overview at Mammoth Lakes Climate.