Last updated: February 24, 2025
September in Marathon, United States, brings a warm and humid climate, with maximum temperatures reaching up to 30°C (86°F). The average temperature hovers around 28°C (83°F), while minimum temperatures settle at 25°C (77°F), creating a consistently warm atmosphere. However, this month also experiences significant rainfall, with a total precipitation amount of 200 mm (7.9 in) over approximately 18 days, contributing to a humidity level of 76%. Visitors and locals alike should be prepared for a mix of sunny days and occasional showers, making it a vibrant time to experience the natural beauty of Marathon.
In September, Marathon, United States experiences a delightful transition as summer gently wanes. The minimum temperature hovers at a warm 25°C (77°F), ensuring that the lingering warmth is still felt. Meanwhile, the average temperature settles at a comfortable 28°C (83°F), making it an ideal time for outdoor activities. The maximum temperature peaks at 30°C (86°F), providing just enough heat to enjoy the last days of summer while hinting at the cooler autumn months ahead. As September unfolds, residents and visitors alike can relish the blend of warmth and pleasant breezes, marking the perfect backdrop for exploration and relaxation in this picturesque locale.
September in Marathon, United States, marks a significant uptick in precipitation, with an impressive 200 mm (7.9 in) falling over 18 days—the highest amount for the year. This surge represents a notable shift from the drier summer months, where July and August recorded only 90 mm (3.6 in) and 96 mm (3.8 in) respectively. As summer gives way to fall, the increased rainfall not only enhances the vibrant landscape but also signals a transition into the wetter season, with October following closely behind with 131 mm (5.2 in) over 18 days. This trend illustrates Marathon's climate pattern of intensified precipitation during the onset of autumn, setting the stage for a refreshing change in the weather.
As summer transitions to autumn in Marathon, September sees a notable rise in humidity, reaching 76%. This uptick marks a shift from the drier months of June and July, which recorded lower humidity levels of 69% and 70%, respectively. The trend indicates a gradual increase in moisture as the year progresses, with the humidity peaking in the depths of winter months such as January and December at 81%. This September level hints at the lingering warmth of summer while setting the stage for the higher humidity that characterizes the end of the year, creating a dynamic climate that reflects the region's unique blend of tropical influences.
As summer wanes and September arrives in Marathon, the UV Index remains relentlessly high, measuring 12, which falls into the extreme exposure category. This trend of elevated UV readings has persisted since April, indicating that residents and visitors should continue to be vigilant about sun protection, as the burn time is still a brisk 10 minutes. While the sun's intensity begins its gradual decline in October, September serves as a reminder of the need for adequate sunscreen and protective clothing, ensuring that sun-seekers can enjoy the beautiful Florida weather without risking skin damage. For more details on UV levels, check out Marathon UV Index.
UV Risk Categories
As the summer warmth begins to wane, September in Marathon offers a delightful 318 hours of sunshine, marking a gentle transition into the fall season. This month experiences slightly less sunshine than its sun-soaked predecessors, July and August, which boast impressive totals of 348 and 338 hours respectively. However, September doesn't fall behind too far; rather, it embraces a comfortable, sunlit atmosphere that encourages outdoor adventures. With the sun still shining brightly, this month serves as a beautiful bridge between the peak of summer and the cozy autumn days ahead, making it an ideal time to soak in the last rays before reaching for warmer attire.
September in Marathon, United States, witnesses a moderate chance of sunny weather, estimated at 35%. This marks a noticeable dip from the vibrant sunny spells of earlier months like February and March, which boast chances of 68% and 67% respectively. It seems summer's intense heat fades, with June to August presenting the lowest probabilities of sun, plummeting to just 18% in June and 28% in August. As the season transitions into autumn, the likelihood of sunshine begins to recapture some of its vigor in October, rising to 51%. Thus, while September may not be the sunniest month, its trends suggest a lingering summer charm, giving way to a more balanced weather outlook as the year progresses.
As summer transitions into autumn in Marathon, United States, September retains a generous 12 hours of daylight, reflecting a gradual shift in the season. Following a peak of daylight during the summer months—where July offered a full 13 hours—the amount of daylight begins to wane. This slight decrease, mirrored by the previous month of August, suggests a harmonious cycle of nature as days grow shorter in preparation for the cooler months ahead. The steady drop from summer's abundance to autumn's balance highlights nature's rhythm, providing a picturesque backdrop for outdoor activities and reflections as the year begins its descent into winter.
As September arrives in Marathon, United States, it brings a notable decline in wind speed, with averages dropping to a gentle 3.5 m/s (8 mph). This decrease marks the start of a transition from the breezier summer months, where July recorded a peak wind speed of just 4.4 m/s (10 mph), to calmer conditions that typically characterize the fall. The prevailing winds in September offer a serene atmosphere, inviting outdoor enthusiasts to enjoy the warm weather without the intensity of stronger gusts. Such a shift in wind dynamics mirrors the overall cooling trend as the year progresses, setting the stage for the more balanced breezes of October and beyond.
The weather in Marathon 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 Marathon and find detailed weather information for every month.
In September, the weather is significantly warmer, with temperatures typically ranging from a minimum of 25°C (77°F) to a maximum of 30°C (86°F), resulting in an average of 28°C (83°F). This month also experiences high humidity at 76% and considerable rainfall, totaling 200 mm (7.9 in) over about 18 days. In contrast, January offers a much cooler climate with temperatures ranging from a minimum of 11°C (52°F) to a maximum of 26°C (80°F), averaging 22°C (71°F). The precipitation in January is notably lower at 24 mm (1.0 in) over just 4 days, along with a slightly higher humidity level of 81%. For more details on the climate during this month, you can check Marathon weather in January.
In September, the weather is notably warmer, with average temperatures around 28°C (83°F) and maximums reaching up to 30°C (86°F). This month also sees significant rainfall, with approximately 200 mm (7.9 in) of precipitation spread over 18 days, coupled with high humidity levels of 76%. In contrast, February experiences milder temperatures, averaging 23°C (74°F) with maximums of 26°C (80°F) and a minimum of 15°C (59°F). Precipitation is considerably less in February, totaling only 28 mm (1.1 in) across just 5 days, while humidity slightly rises to 79%. For more details on February weather patterns, you can check Marathon weather in February.
In comparing the weather of September and March, September tends to be significantly warmer, with average temperatures ranging from a minimum of 25°C (77°F) to a maximum of 30°C (86°F), while March experiences milder temperatures, with a minimum of 15°C (60°F) and a maximum of 26°C (80°F). Additionally, September is characterized by much higher precipitation, with 200 mm (7.9 in) falling over 18 days, compared to March, which only sees 22 mm (0.9 in) over just 3 days. Despite both months having a humidity level of 76%, the overall weather in September feels much more tropical and wet, while March offers a cooler and drier climate, making it a more comfortable time for outdoor activities. For more detailed insights, you can check the Marathon weather in March.
In September, temperatures are generally warmer, with a minimum of 25°C (77°F) and an average of 28°C (83°F), peaking at 30°C (86°F). The month also experiences significant rainfall, with approximately 200 mm (7.9 in) over 18 days, contributing to a high humidity of 76%. In contrast, April offers milder conditions, featuring a minimum temperature of 18°C (65°F) and an average of 25°C (77°F), while the maximum reaches 29°C (84°F). Precipitation is much lighter in April, totaling just 44 mm (1.7 in) over 7 days, with humidity slightly lower at 73%. For more detailed weather insights, you can visit Marathon weather in April.
September and May offer distinct weather patterns, each with its own character. In September, temperatures tend to be a bit warmer, with minimums around 25°C (77°F) and average highs reaching 30°C (86°F). However, this month also brings considerable rainfall, totaling about 200 mm (7.9 in) over 18 days, paired with high humidity levels of 76%. In contrast, May sees slightly cooler temperatures, with minimums of 22°C (72°F) and an average maximum of 29°C (84°F). Precipitation is lower in May, totaling 142 mm (5.6 in) over just 11 days, and the humidity is a bit more comfortable at 71%. For those seeking to understand the weather during this time, check out the details in Marathon weather in May.
In comparing the weather between September and June, both months exhibit warm temperatures with averages around 28°C (82°F). However, September tends to be slightly more humid, with an average humidity of 76% compared to June's 69%. Furthermore, September experiences significantly higher precipitation, totaling 200 mm (7.9 in) over 18 days, while June has 105 mm (4.1 in) over 16 days. This makes June somewhat drier and more comfortable for outdoor activities. For those interested in marathon weather specifically, you can find more details here: Marathon weather in June.
In comparing the weather between July and September, we find both months exhibiting similar temperature ranges, with a minimum of around 25°C (77°F) and average temperatures hovering around 28°C (83°F). However, July tends to be slightly warmer overall, peaking at a maximum of 31°C (87°F), compared to September’s maximum of 30°C (86°F). A significant difference lies in the precipitation levels; September experiences much heavier rainfall with 200 mm (7.9 in) over 18 days, while July is drier, recording only 90 mm (3.6 in) across 16 days. Additionally, September has a higher humidity level at 76%, compared to July's 70%. For more insights on the weather in July, you can check out the detailed information here: Marathon weather in July.
In comparing the weather between September and August, both months experience warm temperatures, but September tends to be slightly cooler with average highs of 30°C (86°F) compared to August's 31°C (87°F). Notably, September has higher humidity at 76%, while August maintains a more comfortable level at 72%. Precipitation also sees a significant increase in September, with 200 mm (7.9 in) over 18 days, contrasting with August's 96 mm (3.8 in) across 16 days. For those interested in a detailed assessment of weather conditions during August, Marathon weather in August provides useful insights.
September's weather tends to be warmer and more humid compared to October, with temperatures averaging 28°C (83°F) and reaching highs of 30°C (86°F). The month sees a significant amount of rainfall, totaling 200 mm (7.9 in) over 18 days, which can contribute to a muggy atmosphere with 76% humidity. In contrast, October sees a slight decrease in temperatures, averaging 27°C (81°F) and peaking at 29°C (85°F), while precipitation drops to 131 mm (5.2 in), still spread over 18 days. The humidity rises slightly to 79%, creating a somewhat more comfortable climate. For those interested in specific weather conditions, especially for outdoor activities, the details can be found here: Marathon weather in October.
In September, temperatures are generally warmer, with a minimum of 25°C (77°F) and an average of 28°C (83°F), peaking at a maximum of 30°C (86°F). The month is also characterized by higher rainfall, averaging 200 mm (7.9 in) over 18 days, coupled with a humidity level of 76%. In contrast, November brings a noticeable drop in temperatures, with minimums falling to 17°C (63°F) and an average of 25°C (77°F), while the maximum remains similar at 28°C (83°F). This month experiences significantly less precipitation, at 69 mm (2.7 in) over just 11 days, alongside slightly higher humidity at 80%. For more details on the weather during this month, you can check Marathon weather in November.
September and December present contrasting weather patterns. In September, temperatures are warmer, with a minimum of 25°C (77°F) and averaging around 28°C (83°F). The month also experiences high humidity at 76% and significant precipitation, amounting to 200 mm (7.9 inches) over 18 days, creating a wet and muggy atmosphere. In contrast, December cools down, featuring a minimum temperature of 14°C (58°F) and an average of 23°C (74°F), with a maximum of 26°C (80°F). Rainfall is considerably lower in December at 44 mm (1.7 inches) over just 7 days, but the humidity rises slightly to 81%. For more details on the weather in December, including its impact on outdoor activities, you can check Marathon weather in December.
As September rolls in, Marathon experiences a distinct shift in weather that sets it apart from the other months. With temperatures typically peaking around 30°C, the warm days are complemented by a high humidity level of 76%, creating a sticky atmosphere reminiscent of summer's last hurrah. Rainfall is more frequent, with approximately 18 days of precipitation, adding to the 200 mm of rain that hints at the approaching fall season. This unique blend of warmth and moisture not only enriches the lush landscapes but also invites visitors to embrace the outdoors. To learn more about the seasonal patterns and conditions that define this charming locale, explore the detailed insights available at Marathon Climate.