Last updated: February 24, 2025
September in South Lake Tahoe offers a delightful transition into autumn, characterized by an average temperature of 15°C (60°F), with maximum highs reaching 32°C (90°F) and minimum lows dipping to a chilly -3°C (27°F). The region experiences a modest precipitation amount of 16 mm (0.6 in) over about 4 days, providing a refreshing contrast to the warmth. With a humidity level of 44%, the weather is generally pleasant, making it an ideal time for outdoor activities while soaking in the breathtaking natural beauty of the Sierra Nevada mountains.
In September, South Lake Tahoe begins to transition from the warmth of summer to the coolness of autumn. The temperatures reflect this shift, with nighttime lows averaging around -3°C (27°F), while daytime highs reach a pleasant 32°C (90°F). This month boasts a moderate average temperature of 15°C (60°F), making it an ideal time for outdoor activities as the weather remains comfortably warm yet begins to cool off in the evenings. As summer fades, the crispness in the air hints at the upcoming fall, allowing visitors to enjoy the stunning natural beauty of the region while savoring the last warm days before winter approaches.
In September, South Lake Tahoe experiences a modest increase in precipitation, with approximately 16 mm (0.6 in) falling over four days. This marks a slight uptick from the dry summer months of July and August, which each saw less than 13 mm (0.5 in). As summer gives way to fall, the subtle rise in rainfall signals the onset of seasonal transitions, setting the stage for the more significant precipitation patterns that often characterize the subsequent months. With October bringing a notable spike to 47 mm, it's clear that September acts as a gentle precursor to the wetter conditions ahead, inviting nature lovers to witness the tranquil beauty of the Tahoe area as it prepares for autumn's embrace.
As summer transitions to fall in South Lake Tahoe, September experiences a notable increase in humidity, rising to 44% compared to the dry summer months, which see humidity levels drop as low as 36% in August. Throughout the year, a clear trend emerges: humidity peaks during the winter months, with January and February each reaching 84%. As spring unfolds, levels gradually decrease, hitting their lowest point in July. However, as autumn approaches, humidity begins to rebound, hinting at the return of more moisture-laden air as the region prepares for the winter months ahead. This cyclical relationship between humidity and seasonal change is vital for both the local climate and the surrounding natural landscape.
In September, South Lake Tahoe experiences a UV Index of 10, which falls into the very high exposure category, indicating a need for extra sun protection. This decline from the peak summer months – when UV Index levels reached extremes of 11 to 13 – suggests that while the sun's intensity is less severe, caution is still essential as the burn time is reduced to just 15 minutes. As the season transitions into autumn, maintaining awareness of UV levels remains crucial for outdoor activities. The overall trend indicates a gradual decrease in UV intensity starting from May's extremes down to September's levels, ultimately leading into lower readings as fall approaches. For more information on how UV levels change throughout the year, check out the South Lake Tahoe UV Index.
UV Risk Categories
September in South Lake Tahoe is a splendid continuation of the summer vibes, boasting 322 hours of sunshine—a warm embrace before the crisp autumn days set in. This month marks a gentle decline from the peak sunny splendor of July and June, which are known for their longest days. Interestingly, September offers more sunshine than October and November, making it a perfect time for outdoor adventures and enjoying the lingering warmth. As days grow shorter, the sun-drenched landscape transforms, inviting visitors to relish the vibrant fall foliage while basking in the golden light of early autumn. The trend reveals that despite transitioning into fall, September remains a delightful bridge between summer's abundance and winter's serenity.
In September, South Lake Tahoe enjoys a robust likelihood of sunny weather, with a whopping 83% chance of sunshine. This follows a summer peak in August, where residents bask in the sun nearly all month long. As the summer heat tapers off, September still retains a delightful warmth, making it a prime time for outdoor activities. Interestingly, the chances of clear skies gradually decline into October, marking a transition toward autumn. With September's pleasing weather patterns, those eager to explore the stunning landscapes can expect many sunny days, making it an ideal month for adventures in this beautiful destination.
As summer fades into autumn, September in South Lake Tahoe ushers in a gradual reduction in daylight, offering about 12 hours of sunshine. This marks a subtle yet significant transition from the long, bright days of summer, which peaked at 14 hours in June and July. The diminishing daylight serves as a reminder of the forthcoming seasonal change, as October brings even less light, dropping back to 11 hours. This gradual decline not only affects daily routines but also enhances the enchanting beauty of the region, making September a delightful time to witness the vibrant fall foliage amidst the softening light.
As September rolls into South Lake Tahoe, the gentle breeze settles at an average wind speed of 2.0 m/s (5 mph), mirroring the calmness of the preceding summer months. This slight dip from the late summer peak reflects a tendential consistency in wind patterns, which remain relatively stable throughout the year with modest fluctuations. Unlike the blustery conditions of December and the refreshing gusts of June, September’s atmosphere tends to offer a serene feel, perfect for enjoying the breathtaking lake views and transitioning into the vibrant fall season. As the autumn air begins to cool, the winds remain inviting, creating an ideal backdrop for outdoor adventures in this picturesque mountain locale.
The weather in South Lake Tahoe changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of September's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in South Lake Tahoe and find detailed weather information for every month.
September and January present stark contrasts in weather. In September, temperatures can range from a chilly -3°C (27°F) at night to a warm 32°C (90°F) during the day, with an average of 15°C (60°F) and relatively low precipitation of 16 mm (0.6 in) over just four days, creating a comfortable climate with moderate humidity at 44%. In contrast, January brings much colder conditions, with temperatures plunging to a minimum of -12°C (11°F) and an average of 0°C (32°F), peaking at only 12°C (54°F). This month sees significantly higher precipitation at 177 mm (7.0 in) spread across ten days, accompanied by much higher humidity at 84%. For a detailed look at January weather, check out South Lake Tahoe weather in January.
September and February in South Lake Tahoe present strikingly different weather patterns. September experiences a broad temperature range, with lows around -3°C (27°F) and highs peaking at 32°C (90°F), along with just 16 mm (0.6 in) of precipitation over about four days. The humidity is relatively comfortable at 44%. In contrast, February is much chillier, with average temperatures hovering around -1°C (31°F) and experiencing a more significant minimum of -16°C (3°F). This month sees a substantial increase in precipitation at 180 mm (7.1 in) spread over approximately 11 days, and humidity levels soar to 84%. For more detailed insights on February weather, you can check South Lake Tahoe weather in February.
When comparing the weather in September and March, the differences are quite striking. September boasts a much milder average temperature of 15°C (60°F), with daytime highs reaching up to 32°C (90°F) and minimal precipitation at just 16 mm over 4 days. In contrast, March experiences significantly colder temperatures, with an average of only 1°C (34°F) and a maximum of 16°C (61°F). Additionally, it sees much higher precipitation levels, totaling 158 mm (6.2 in) spread over 14 days, along with elevated humidity at 83%. For more detailed insights, check out South Lake Tahoe weather in March.
When comparing September and April weather in South Lake Tahoe, a stark contrast emerges. September typically boasts a mild climate with temperatures ranging from -3°C (27°F) at night to a warm 32°C (90°F) during the day, accompanied by low humidity of 44% and minimal precipitation at just 16 mm over 4 days. In contrast, April experiences a chillier average temperature of 4°C (40°F), with lows plunging to -13°C (8°F) and highs reaching only 21°C (70°F). This month is marked by significantly higher humidity at 81% and more rainfall, totaling 76 mm over 8 days. For more details on April weather, visit South Lake Tahoe weather in April.
In September, South Lake Tahoe experiences a wider temperature range, with minimums dipping to -3°C (27°F) and maximums reaching as high as 32°C (90°F), resulting in an average of 15°C (60°F). The month is relatively dry, with only 16 mm (0.6 in) of precipitation over about 4 days and a humidity level of 44%. In contrast, May is cooler in general, featuring a minimum temperature of -9°C (17°F) and a maximum of 27°C (81°F), averaging just 9°C (48°F). This month is significantly wetter, with 65 mm (2.6 in) of precipitation spread over 10 days and a higher humidity of 74%. For more details on the weather in May, check out South Lake Tahoe weather in May.
When comparing the weather in September and June, both months exhibit similar temperature averages, hovering around 15°C (60°F). However, September tends to have slightly higher maximum temperatures, reaching up to 32°C (90°F), while June peaks at 31°C (88°F). Interestingly, September features a lower humidity level at 44%, compared to June's more humid 64%, which may make June feel warmer despite similar averages. Precipitation is relatively low in both months, with September experiencing 16 mm (0.6 in) over 4 days and June slightly less at 14 mm (0.6 in) also over 4 days. For more detailed insights, visit South Lake Tahoe weather in June.
When comparing the weather in September and July, we see notable differences in temperature. September experiences a wider temperature range with a minimum of -3°C (27°F) and a maximum of 32°C (90°F), leading to an average temperature of 15°C (60°F). In contrast, July's minimum temperature is higher at 5°C (42°F) with a maximum of 33°C (92°F) and an average of 20°C (68°F). Both months see similar precipitation levels, with September receiving 16 mm (0.6 in) over 4 days and July slightly less at 13 mm (0.5 in) on the same number of days. Interestingly, humidity remains constant at 44% for both months. For more details on July weather specifics, visit South Lake Tahoe weather in July.
In comparing the weather of September and August, September presents a broader temperature range, with minimums dipping as low as -3°C (27°F) and maximums reaching up to 32°C (90°F), while August maintains warmer minimums starting at 5°C (42°F) and maximums peaking at 33°C (91°F). The average temperature in September is lower at 15°C (60°F) compared to August's average of 19°C (67°F). Precipitation levels are slightly higher in September at 16 mm (0.6 in) over 4 days, compared to August's 12 mm (0.5 in) over the same number of days, although humidity is more comfortable in August at 36% compared to September's 44%. For a deeper dive into August weather dynamics, check out South Lake Tahoe weather in August.
The weather in September presents a wide temperature range, with minimums dropping to -3°C (27°F) and maximums climbing to a warm 32°C (90°F), resulting in an average of 15°C (60°F). In contrast, October sees cooler conditions, with minimum temperatures reaching -7°C (20°F) and an average of only 9°C (48°F), peaking at 27°C (80°F). Precipitation also increases in October to 47 mm (1.9 in) over just 3 days, compared to September’s 16 mm (0.6 in) spread across 4 days. Additionally, humidity rises significantly in October to 65%, up from September's 44%. For more detailed information on October weather, check South Lake Tahoe weather in October.
In September, South Lake Tahoe experiences a pleasant range of temperatures, with a minimum of -3°C and a maximum reaching up to 32°C, resulting in an average of 15°C. The month sees relatively low precipitation, totaling only 16 mm across about four days, and the humidity remains at a comfortable 44%. In contrast, November brings a noticeable shift in weather, featuring colder conditions with minimum temperatures dropping to -10°C and an average of just 4°C, while the maximum temperature peaks at 21°C. This month is also significantly wetter, with precipitation increasing to 83 mm over seven days and humidity climbing to 84%. For a deeper look at November's climate, check out South Lake Tahoe weather in November.
September and December present stark contrasts in weather conditions. In September, temperatures range from a frigid minimum of -3°C (27°F) to a warm average of 15°C (60°F) and a maximum of 32°C (90°F), with relatively low humidity at 44% and only 16 mm (0.6 in) of precipitation spread over 4 days. In contrast, December temperatures drop significantly, with a minimum of -12°C (11°F) and an average of -1°C (31°F), peaking at a maximum of 14°C (58°F). This month sees a dramatic increase in precipitation, totaling 139 mm (5.5 in) over 10 days, accompanied by a much higher humidity level of 83%. For more detailed information, check out South Lake Tahoe weather in December.
As September unfolds in South Lake Tahoe, the area transitions into a cozy autumn ambiance, showcasing its unique charm. With warm afternoons often reaching highs in the low 30s°C (high 80s°F) and crisp nights dipping below freezing, the month provides a delightful contrast to the summer heat. The rainfall is sparse, occurring on just a few days, which allows for plenty of sunshine amidst the beautiful fall foliage. This combination of moderate humidity and pleasant temperatures makes September an ideal time for outdoor activities and enjoying the stunning natural scenery. For a deeper dive into what to expect throughout the year, visit South Lake Tahoe Climate.