Last updated: February 24, 2025
In September, Truckee experiences a delightful transition into fall, with temperatures ranging from a comfortable average of 15°C (59°F) to a peak of 32°C (90°F) on warmer days. The crisp mornings can dip as low as -3°C (28°F), making layers essential for outdoor activities. The region receives about 20 mm (0.8 in) of precipitation over an average of 4 days, maintaining a 44% humidity level that complements the refreshing climate. This month offers a unique blend of warmth and coolness, perfect for enjoying the stunning scenery and vibrant autumn colors.
In September, Truckee experiences a delightful transition from the warmth of summer to the crispness of autumn. With temperatures ranging from a low of -3°C (28°F) to a maximum of 32°C (90°F), this month showcases a remarkable blend of warm days and cool nights. The average temperature stays comfortable at 15°C (59°F), making it an ideal time for outdoor adventures as the changing foliage adds vibrant colors to the landscape. As summer's heat lingers, it's not uncommon to feel the early whispers of fall in the air, creating a refreshing contrast that invites both locals and visitors to savor the season's beauty.
In September, Truckee experiences a slight uptick in precipitation compared to the drier summer months, accumulating about 20 mm (0.8 in) of rain over four days. This marks a shift from the minimal rainfall seen in July and August, signaling the transition towards the wetter fall season. As temperatures begin to cool, the region prepares for more consistent precipitation in the coming months, particularly as October often brings higher amounts, averaging 52 mm (2.1 in). Overall, September acts as a gentle precursor to the wet weather pattern that defines Truckee's autumn, providing a brief yet refreshing respite from the summertime dryness.
In September, Truckee experiences a noticeable shift in humidity, with levels rising to 44% after a drier summer. This modest increase follows a significant drop from the sweltering 36% in August, indicating the transition towards the cooler fall months. As the year progresses, humidity generally remains high during the winter, peaking at 84% in January and February, and then gradually decreases through the spring and summer. By September, the atmosphere starts to feel more comfortable, as the crisp autumn air returns, balancing humidity levels that had dipped significantly during the peak summer months. The consistent pattern of increasing humidity entering fall adds a refreshing touch to the changing seasons in this picturesque region.
In September, Truckee experiences a UV Index of 10, placing it squarely in the very high exposure category. As summer gives way to fall, sunlight remains potent, with a burn time of just 15 minutes for unprotected skin. This trend marks a slight decline from the peak summer months, where the index reached extremes of 12, yet still calls for caution and protective measures during outdoor activities. As autumn approaches, it's essential to stay aware of these UV levels to enjoy the stunning scenery safely. For those looking to delve deeper into UV data and trends, visit the detailed report at Truckee UV Index.
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As summer fades, September in Truckee experiences a delightful transition with 322 hours of sunshine, providing a golden sepia tone to the landscape. While this marks a decrease from the sun-soaked heights of July and August, it's still a significant bounty, showcasing the region's generous late-summer weather. This month often brings milder temperatures and vibrant autumn colors, creating an inviting atmosphere for outdoor activities. The sunshine hours in September reflect a gradual shift, hinting at the impending cooler months, yet still enticing residents and visitors alike to soak in those last rays before autumn fully sets in. As days get shorter, Truckee’s charming character remains illuminated, promising experiences worth basking in.
As summer transitions to fall, September in Truckee showcases a promising 82% chance of sunny weather, making it one of the most favorable months for sunshine in the region. Following the peak of summer, where sunny days soar to 90% in August, September maintains a strong level of clear skies before heading into the cooler fall months. This trend indicates a gradual decline in sunshine as the year progresses, with the chances plummeting to 51% by October and November. Thus, September serves as a delightful bridge, offering ample opportunity for outdoor activities amidst the stunning backdrop of autumn foliage.
As September unfolds in Truckee, the transition from summer to autumn brings a subtle shift in daylight, with the sun gracing the days for 12 hours. Following the peak of 14 hours in June and July, daylight gradually diminishes, echoing the familiar rhythm of the changing seasons. While August’s 13 hours of light linger in the air, September signals a gentle decline, paving the way for the shorter days of October. This trend of gradually decreasing daylight serves as a reminder of nature's cyclical patterns, inviting residents and visitors alike to savor the last vestiges of warmth before the crispness of fall settles in.
In September, Truckee experiences a gentle breeze with an average wind speed of 2.4 m/s (5 mph), continuing the trend of soft winds observed during the summer months. This slight increase from the more languid July and August winds suggests a subtle shift as autumn approaches. Overall, the year showcases a consistent pattern, with wind speeds generally hovering between 2.1 to 3.1 m/s, peaking in December. The transition into fall may bring a refreshing crispness to the air, hinting at the changes to come while maintaining the calmness that characterizes the summer season.
The weather in Truckee 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 Truckee and find detailed weather information for every month.
September and January demonstrate stark contrasts in weather conditions. In September, temperatures range from a chilly -3°C (28°F) at night to a warm average of 15°C (59°F) during the day, occasionally peaking at 32°C (90°F). This month sees relatively low precipitation at just 20 mm (0.8 in) over 4 days, with a humidity level of 44%. In contrast, January is much colder, with minimum temperatures plummeting to -13°C (9°F) and an average temperature of 0°C (31°F), reaching a maximum of only 12°C (54°F). January is also characterized by significantly higher precipitation, totaling 213 mm (8.4 in) across 11 days and an increased humidity level of 84%. For more detailed insights, you can check out Truckee weather in January.
September and February present stark contrasts in weather. In September, temperatures can range from a chilly -3°C (28°F) at night to a warm 32°C (90°F) during the day, with an average of 15°C (59°F). Rainfall is relatively minimal, averaging only 20 mm (0.8 in) over about 4 days, and the humidity stands at 44%. Conversely, February is much colder, with nighttime lows plunging to -17°C (1°F) and daytime highs peaking at 16°C (61°F). The month sees significantly more precipitation, totaling 220 mm (8.6 in) spread over 11 days, and humidity levels rise to 84%, creating a damp atmosphere. For a more detailed look at February weather, visit Truckee weather in February.
In comparing the weather of September and March, it's evident that these months offer contrasting climates. September typically enjoys milder conditions, with average temperatures ranging from a minimum of -3°C (28°F) to a maximum of 32°C (90°F), and relatively low humidity at 44%. Precipitation is scant, averaging just 20 mm over four days. In stark contrast, March experiences much colder temperatures, with averages from -12°C (11°F) to a maximum of 16°C (60°F), alongside significantly higher humidity at 83%. The month is also much wetter, receiving an average of 196 mm of rain distributed over 15 days. For a more detailed insight into March weather, you can visit Truckee weather in March.
When comparing the weather between September and April, notable differences emerge in temperature and precipitation. September typically experiences milder conditions, with average temperatures ranging from a chilly 15°C (59°F) to a warm 32°C (90°F), alongside relatively low precipitation of just 20 mm (0.8 in) over four days, and a humidity level of 44%. In contrast, April is much cooler, with average temperatures hovering around 4°C (39°F) and maximums reaching only 18°C (64°F). This month also sees significantly more rainfall, totaling 96 mm (3.8 in) across eight days, and a higher humidity level of 81%. For more detailed insights on the April climate, you can visit Truckee weather in April.
In comparing the weather between September and May, September tends to be warmer, with temperatures ranging from a minimum of -3°C (28°F) to a maximum of 32°C (90°F) and an average of 15°C (59°F). Conversely, May experiences cooler temperatures, with a minimum of -8°C (17°F), an average of 8°C (47°F), and a peak of 26°C (79°F). Additionally, September has lower precipitation at 20 mm (0.8 in) across 4 days, while May sees significantly more rain, totaling 71 mm (2.8 in) over 10 days. The humidity levels also differ, with September at 44% and May considerably higher at 74%. For more detailed insights on May weather, you can visit Truckee weather in May.
When comparing the weather in September and June, both months exhibit similar temperature ranges, with minimums around -3°C (26°F to 28°F), average temperatures of 15°C (59°F), and maximums slightly differing, reaching 32°C (90°F) in September and 30°C (87°F) in June. However, September boasts slightly higher maximum temperatures, offering warmer days. In terms of precipitation, both months experience comparable levels, with September receiving 20 mm (0.8 in) and June just a bit less at 18 mm (0.7 in), each with around four days of rainfall. Notably, humidity levels are distinctly higher in June at 64%, compared to September’s 44%, contributing to a more humid feel during the earlier summer month. For more detailed insights, you can check Truckee weather in June.
In comparing the weather of September and July, we observe notable differences in temperature and precipitation patterns. September features a broader temperature range, with a minimum of -3°C (28°F) and a maximum of 32°C (90°F), while the overall average temperature settles at 15°C (59°F). In contrast, July maintains warmer conditions with a minimum of 6°C (44°F) and an average of 20°C (68°F), still reaching a maximum of 32°C (90°F). When it comes to precipitation, September receives slightly more, totaling 20 mm (0.8 in) over 4 days, compared to July's 14 mm (0.5 in) during the same number of days. Both months share the same humidity level of 44%, highlighting a consistent atmospheric condition despite the variations in temperature and rainfall. For more details, you can explore Truckee weather in July.
In comparing the weather of September to August, we see a notable shift in temperatures and humidity levels. September experiences a wider range of temperatures, with a minimum of -3°C (28°F) and an average of 15°C (59°F), while August maintains milder conditions with a minimum of 5°C (40°F) and an average of 19°C (67°F). Both months have the same maximum temperature of 32°C (90°F), but September brings slightly more precipitation at 20 mm (0.8 in) over 4 days compared to August's 15 mm (0.6 in) over 5 days. Additionally, September has a higher humidity level at 44%, compared to August's 36%. For a detailed look at August's weather, visit Truckee weather in August.
In September, temperatures in Truckee range from a mild minimum of -3°C (28°F) to a warm maximum of 32°C (90°F), with an average of 15°C (59°F). The month experiences low humidity at 44% and minimal precipitation, totaling just 20 mm (0.8 in) over four days. In contrast, October brings cooler temperatures, with a minimum of -6°C (21°F) and an average of 8°C (47°F), reaching a maximum of 27°C (81°F). Precipitation increases significantly to 52 mm (2.1 in) over just three days, accompanied by higher humidity at 65%. For more detailed insights into the weather conditions, check out Truckee weather in October.
In September, the weather is generally mild with temperatures ranging from a minimum of -3°C (28°F) to a maximum of 32°C (90°F), resulting in an average of 15°C (59°F). The precipitation is relatively low at 20 mm (0.8 in) over about 4 days, and the humidity sits at a comfortable 44%. In contrast, November experiences much colder temperatures, with a minimum of -12°C (10°F) and an average of just 4°C (39°F), peaking at 22°C (72°F). Precipitation increases significantly to 103 mm (4.1 in) over 7 days, and the humidity rises to 84%, making the month feel much wetter and chillier. For more detailed information, check out Truckee weather in November.
In September, temperatures vary widely, ranging from a chilly -3°C (28°F) to a warm max of 32°C (90°F), with an average of 15°C (59°F). The month experiences relatively low precipitation at 20 mm (0.8 in) over just 4 days, and the humidity sits at a moderate 44%. In contrast, December brings much colder conditions, with minimum temperatures plummeting to -11°C (13°F) and an average of -1°C (31°F). Max temperatures are significantly lower, capped at 15°C (59°F). This month sees a notable increase in precipitation, totaling 169 mm (6.6 in) over 11 days, alongside much higher humidity at 83%. For more detailed insights into December weather, visit Truckee weather in December.
As summer fades, September in Truckee presents a captivating transition marked by milder temperatures and less humidity. With a maximum temperature that reaches warm days but not excessively high, the weather is more comfortable for outdoor activities compared to the peak heat of July and August. The cooler nights indicate the arrival of fall, providing a refreshing contrast to the warm days. While occasional light rain graces the month, the overall precipitation is modest, making for pleasant hiking and exploring. Embrace the beautiful seasonal shift and discover more about the region's unique climate by visiting Truckee Climate.