Last updated: February 24, 2025
In October, Mammoth Lakes, United States, experiences a dynamic range of temperatures, with maximum highs reaching 24°C (75°F) and lows dipping to a chilly -10°C (14°F). The average temperature hovers around a crisp 7°C (44°F), making it an ideal month for outdoor enthusiasts. Despite the cool climate, precipitation is relatively low, with just 23 mm (0.9 in) of rain over a single day, allowing for plenty of dry opportunities to explore this stunning region. With humidity levels at 59%, the air feels brisk yet invigorating, perfect for autumn adventures amidst the breathtaking landscapes.
As October arrives in Mammoth Lakes, temperatures begin to dip from the warmth of summer, marking a distinct transition into the cooler months. With minimum temperatures around -10°C (14°F) and an average of 7°C (44°F), the crisp air invites outdoor enthusiasts to explore the stunning autumn scenery. During the day, temperatures can reach a pleasant 24°C (75°F), making it an ideal time for hiking and appreciating the vibrant fall foliage. This month signals the gradual onset of winter, as the region's average temperatures showcase a steady decline from the warmth of previous months, contrasting sharply with the harsher cold already felt in January. Overall, October in Mammoth Lakes is a beautiful blend of mild daytime warmth and brisk evening chills, perfect for those looking to experience the breathtaking beauty of the changing season.
October in Mammoth Lakes marks a shift in the season, with precipitation totaling 23 mm (0.9 in) over just one day. This is a noticeable decrease from the preceding summer months, which typically see minimal rainfall. The onset of autumn brings a subtle uptick compared to September’s meager 9 mm (0.4 in) but remains significantly lower than the winter months ahead. As the region transitions from dry summer days to the wetter conditions of late fall and winter, October serves as a gentle reminder of the changing landscape, setting the stage for the snow-laden months that follow.
In Mammoth Lakes, October brings a noticeable uptick in humidity, reaching 59%, a significant increase from the drier summer months, where humidity plummeted to a mere 30% in August and 36% in July. As autumn settles in, the transition from the low humidity levels of summer to the more comfortable fall environment becomes evident, creating a refreshing backdrop for outdoor activities. This rise in humidity is part of a trend where the fall months gradually move towards higher levels, culminating in November's humidity returning to 78%. The month of October serves as a bridge, allowing residents and visitors to enjoy the crisp, cool air while experiencing a gentle increase in moisture that hints at the approaching winter months.
In October, Mammoth Lakes experiences a UV Index of 8, which falls in the very high exposure category, indicating that skin can burn within just 15 minutes of unprotected exposure. This marks a decline from the intense extremes of summer months, yet it still underscores the need for sun protection while enjoying the crisp fall air. As the year transitions, the UV Index steadily decreases from its April and May peaks of 13, but notably remains higher than the winter months. Visitors should be mindful of their sun exposure even in autumn, ensuring they stay safe while soaking in the beautiful mountainous landscapes. For more details, check out the comprehensive information at Mammoth Lakes UV Index.
UV Risk Categories
In Mammoth Lakes, October brings a delightful 294 hours of sunshine, marking a gentle transition toward the cooler months. This month retains a significant amount of sunlight, though it does show a notable decrease from the peak summer months of July and June, which boast nearly 400 hours. As the autumn leaves begin to fall, the days gradually shorten, but October’s hours still exceed those of the brisk winter months ahead, signaling an inviting atmosphere for hikers and outdoor enthusiasts. The trend of gradually declining daylight from May's peak illustrates a landscape that is both breathtaking and ever-changing, encapsulating the vibrant spirit of fall within the stunning Sierra Nevada.
In Mammoth Lakes, October presents a 65% chance of sunny weather, marking a transition from the summer's peak sunshine in August and September, both boasting impressive probabilities of 91% and 90%, respectively. As autumn settles in, the likelihood of sun dips slightly, yet remains higher than several winter months, such as January and December, which see chances as low as 47% and 43%. This trend highlights October as a sweet spot for those who appreciate the beauty of fall colors without sacrificing pleasant weather, making it a delightful time for outdoor activities surrounded by the stunning Sierra landscapes.
In Mammoth Lakes, October marks a gentle transition into the heart of autumn, as daylight hours gradually dwindle to 11 hours. Following a peak in the summer months, where daylight stretches to a generous 14 hours, the days begin to shorten as nature prepares for winter's embrace. This month, while still enjoying considerable sunlight, signals a shift from the lengthy days of summer, reminiscent of the gradual decline seen from September's 12 hours. As the vibrant fall foliage emerges, the shorter days invite cozy evenings, creating a perfect blend of warmth and crispness that defines the season in this picturesque mountain town.
As October arrives in Mammoth Lakes, the crisp air carries an average wind speed of 2.3 m/s (5 mph), reflecting a gentle increase from the calmer winds of summer. This postseason breeze not only invigorates the landscape but also signals the transition into cooler weather, with winds generally ranging from 1.8 m/s in November to a brisk 2.4 m/s in December. Interestingly, October's winds remain consistent with the warming spring months, bridging the gap as the area prepares for the forthcoming winter chill. Each gust whispers the promise of changing leaves and upcoming snow, inviting both locals and visitors to embrace the beauty of the season.
The weather in Mammoth Lakes changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of October'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.
October and January present stark contrasts in weather conditions. In October, temperatures vary widely, with a minimum of -10°C (14°F) and a pleasant average of 7°C (44°F), reaching a maximum of 24°C (75°F). The month experiences relatively low precipitation at 23 mm (0.9 in) over just one day, and humidity levels are around 59%. In comparison, January is significantly colder, with temperatures plunging to a minimum of -23°C (-9°F) and an average of -5°C (24°F), peaking at only 10°C (51°F). This winter month sees much higher precipitation, totaling 130 mm (5.1 in) over seven days, alongside increased humidity at 82%. For further details on January weather, visit Mammoth Lakes weather in January.
When comparing the weather in October and February, notable differences emerge in temperature and precipitation. October enjoys a relatively mild climate with average temperatures ranging from a chilly 7°C (44°F) to a comfortable 24°C (75°F), and only 23 mm (0.9 in) of precipitation over just one day. In contrast, February presents a much harsher environment, characterized by colder temperatures that range from a frigid -21°C (-6°F) to a maximum of 13°C (56°F). The month is also significantly wetter, with 129 mm (5.1 in) of precipitation spread over nine days, accompanied by higher humidity levels at 85%. For a closer look at Mammoth Lakes weather during this time, visit Mammoth Lakes weather in February.
October and March present distinctly different weather patterns. October boasts a milder temperature range with an average of 7°C (44°F) and maximums reaching up to 24°C (75°F), accompanied by relatively low precipitation of 23 mm over just one day. In contrast, March experiences much colder conditions, with temperatures averaging -2°C (28°F) and lows plummeting to -20°C (-4°F). This month sees significantly higher precipitation, totaling 88 mm over ten days, and a higher humidity level at 80%. These differences highlight how October transitions into the chill of winter by March. For more specific details on March weather, check out Mammoth Lakes weather in March.
October and April present distinct weather patterns, showcasing the transition of seasons. In October, temperatures range from a chilly minimum of -10°C (14°F) to a pleasant maximum of 24°C (75°F), with an average of 7°C (44°F) and relatively low precipitation of 23 mm (0.9 in) over just one rainy day. The humidity in October stands at 59%, contributing to a crisp autumn feel.
In contrast, April experiences cooler conditions overall, with minimum temperatures dipping to -15°C (5°F) and an average of only 2°C (36°F). The maximum temperature reaches 18°C (65°F), but April is notably wetter, receiving 49 mm (1.9 in) of precipitation across about six days. The humidity rises to 72%, creating a more humid environment as the season shifts toward warmer months. For more insights, you can check Mammoth Lakes weather in April.
In comparing the weather of October and May, we see some interesting contrasts. October features a relatively mild average temperature of 7°C (44°F), with maximums reaching up to 24°C (75°F), while May sees a slightly lower average of 6°C (43°F) and maximums peaking at 25°C (78°F). Notably, October experiences significantly less precipitation, with only 23 mm (0.9 in) over just 1 day, compared to May’s 40 mm (1.6 in) spread across 9 days, indicating a wetter month overall. Humidity levels are fairly comparable, with October at 59% and May at 58%. For those interested in detailed weather patterns, you can learn more about Mammoth Lakes weather in May.
October and June present strikingly different weather patterns. In October, temperatures can dip as low as -10°C (14°F) and typically average around 7°C (44°F), with a maximum reaching 24°C (75°F). This month sees a modest amount of precipitation at 23 mm (0.9 in) over just one rainy day, accompanied by a humidity level of 59%. In contrast, June boasts milder temperatures, with a minimum of -4°C (25°F), an average of 14°C (57°F), and a high of 29°C (84°F). It experiences more rainy days with a total of 11 mm (0.4 in) of precipitation, but lower humidity at 49%. For more detailed insights on June weather, check out Mammoth Lakes weather in June.
In comparing the weather of October and July, October presents a cooler climate with temperatures ranging from a minimum of -10°C (14°F) to a maximum of 24°C (75°F), averaging around 7°C (44°F). It also experiences slightly more precipitation, with about 23 mm (0.9 in) falling over just one day, and a humidity level of 59%. In contrast, July boasts warmer conditions, with minimum temperatures of 4°C (39°F) and maximums reaching 31°C (87°F), averaging 18°C (64°F). This month receives less rain, averaging 17 mm (0.7 in) over four days, and has lower humidity at 36%. For more details, check out Mammoth Lakes weather in July.
October weather presents a notable chill compared to the warmth of August. With temperatures ranging from a brisk minimum of -10°C (14°F) to a maximum of 24°C (75°F), October averages around 7°C (44°F), while August enjoys milder conditions with temperatures from 3°C (38°F) to a high of 30°C (86°F) and an average of 17°C (63°F). Additionally, October typically sees less precipitation, with only 23 mm (0.9 in) falling over just one day, in contrast to August's 11 mm (0.4 in) spread over three days. Notably, October also experiences higher humidity at 59%, compared to just 30% in August, making the latter feel dryer and more comfortable. For more details, you can visit Mammoth Lakes weather in August.
In comparing the weather of October and September, October experiences cooler temperatures overall, with a minimum of -10°C (14°F) and an average of 7°C (44°F), as opposed to September's milder minimum of -6°C (22°F) and an average of 13°C (56°F). While September boasts maximum temperatures reaching up to 30°C (86°F), October sees a much lower peak of 24°C (75°F). Precipitation is notably higher in October, with 23 mm (0.9 in) falling over just one day, compared to September's 9 mm (0.4 in) over two days. Additionally, October’s humidity rises to 59%, compared to September’s drier conditions at 42%. Those interested in more specifics can check out Mammoth Lakes weather in September.
October typically experiences milder conditions with an average temperature of 7°C (44°F) and a maximum heat of 24°C (75°F), while November sees a drop with an average of just 2°C (35°F) and a maximum of 19°C (66°F). Precipitation also increases significantly in November, reaching 48 mm (1.9 inches) over four days compared to only 23 mm (0.9 inches) over one day in October. The humidity rises in November as well, climbing to 78% compared to October's 59%. For more detailed weather insights, check Mammoth Lakes weather in November.
October and December present contrasting weather patterns in Mammoth Lakes. In October, temperatures range from a minimum of -10°C (14°F) to a pleasant average of 7°C (44°F), with highs reaching up to 24°C (75°F). This month experiences relatively low precipitation, with only about 23 mm (0.9 in) falling over just one day and humidity hovering around 59%. In stark contrast, December ushers in much colder weather, with minimum temperatures plummeting to -19°C (-2°F) and an average of -4°C (25°F). The maximum temperature only reaches 12°C (53°F) and December is significantly wetter, with 81 mm (3.2 in) of precipitation spread over approximately seven days, accompanied by higher humidity at 79%. For more detailed insights into December weather, check out Mammoth Lakes weather in December.
October in Mammoth Lakes presents a striking transition from the warmth of summer to the crisp chill of autumn. With a pleasant mix of mild daytime temperatures and the briskness of cooler nights, this month stands out for its dynamic range. Unlike the wetter summer months, October enjoys a relatively dry climate with minimal precipitation, making it ideal for outdoor activities amid stunning fall foliage. The average humidity hovers around a comfortable 59%, contributing to the crisp air that characterizes this beautiful season. For those curious about what to expect throughout the year, delve deeper into the region’s climate trends at Mammoth Lakes Climate.