Last updated: February 24, 2025
September in Sleepy Hollow, United States, presents a refreshing transition into fall with temperatures ranging from a brisk 8°C (47°F) at night to a warm 33°C (91°F) during the day. The average temperature settles at a comfortable 20°C (69°F), ideal for outdoor activities. However, this month also brings an average precipitation amount of 98 mm (3.8 in) over 9 rainy days, resulting in a humidity level of 68%. Prepare for a month of fluctuating weather, where cozy sweaters and light jackets become essentials as daylight shortens and autumn breezes begin to weave through this charming locale.
In September, Sleepy Hollow transitions into a more temperate climate, bringing refreshing changes to its weather patterns. With minimum temperatures around 8°C (47°F) and an average of 20°C (69°F), this month strikes a balance between the summer warmth that lingers and the cooler autumn breeze beginning to take hold. The peak temperature can reach a pleasant 33°C (91°F), making it one of the last moments for outdoor activities before fall fully sets in. This gradual cooling hints at the seasonal shift, as the once blistering heat of summer begins to surrender to crisp, invigorating days ahead, all while maintaining a comfortable atmosphere for residents and visitors alike.
In Sleepy Hollow, September saw an average precipitation of 98 mm (3.8 in) over 9 days, marking a noticeable shift as the region transitions from the later summer months into autumn. While July and August experienced higher precipitation levels at 143 mm and 123 mm, respectively, the rainfall in September tapers off but remains significant, paving the way for the wetter months ahead. This moderate rainfall is fairly consistent with the preceding months, establishing a trend of variable precipitation. As the year progresses into October, the region is expected to receive 132 mm (5.2 in), suggesting that Sleepy Hollow is poised for a seasonal increase in rain as autumn fully sets in.
In Sleepy Hollow, September brings a slight uptick in humidity, reaching 68%, as the lingering warmth of summer transitions into the cooler fall months. This marked increase follows a trend of decreasing humidity from the peak summer months of July and August, which recorded 62% and 65%, respectively. As autumn approaches, the gradual rise in humidity reflects the changing season, while still maintaining a relatively comfortable level compared to the heavy moisture seen in the winter months. Overall, September's humidity serves as a gentle reminder of the seasonal shift, providing a refreshing balance before the air turns crisp in October, where levels rise to 74%.
In September, Sleepy Hollow maintains a UV Index of 8, indicating a very high exposure category with a burn time of just 15 minutes. This trend of elevated UV levels continues from the previous months, as both July and August also recorded a UV Index of 9. The early fall season signals a slight dip in UV intensity compared to the peak summer months, yet it's essential to remain cautious, as sun exposure can still lead to skin damage in a brief period. Following September, the UV Index decreases steadily into the fall, reaching 6 in October. For more detailed information on daily UV levels and safe sun practices, visit Sleepy Hollow UV Index.
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As the rays of September sunshine pour over Sleepy Hollow, the warm light begins to ease into a gentle decline after the vibrant summer months. This month boasts an impressive 278 hours of sunlight, a time when the days still feel long and leisurely, although they gradually grow shorter. A noticeable trend emerges when comparing September's hours with the peak of 339 hours in July; the daylight begins its subtle transition, hinting at the approaching autumn. The surrounding months, particularly the lush May with 275 hours, and the warm August with 315 hours, lend a sense of continuity to the sunlight experience, creating an inviting atmosphere that encourages outdoor activities and reflection before the cooler months settle in. As the days ahead promise a more pronounced shift in light, September offers a sweet farewell to the summer's warmth, leaving its mark as a delightful pause in nature's cycle.
As September rolls in, Sleepy Hollow welcomes a 44% chance of sunny weather, a notable shift from the peak summer months. The likelihood of clear skies begins to stabilize after the fluctuating sunshine of July and August, which dip to 41% and 29%, respectively. Interestingly, as the season transitions towards fall, sunshine returns more frequently than in many earlier months, such as June and April. This trend indicates that while September may not be the sunniest month, it offers a pleasant reprieve from the summer heat, setting the stage for a beautiful autumn ahead.
As September rolls into Sleepy Hollow, the daylight begins to wane, offering about 12 hours of sunlight—a gentle decline from the peak of 15 hours seen in June. This month marks the transition from summer's bright days to the softer light of autumn, with daylight gradually diminishing alongside the shifting leaves. Following the summer months, which boasted 14 hours in July and 13 hours in August, September provides a perfect balance, allowing residents to savor the last vestiges of warm weather while preparing for the cozy evenings ahead. The rhythm of daylight in Sleepy Hollow reflects nature's cycle, highlighting the arrival of fall and foreshadowing the early nights of October.
In Sleepy Hollow, the September winds stir with a subtle resurgence, reaching an average speed of 3.0 m/s (7 mph). This shift in the breeze marks a notable transition from the summer lull, where winds reached a gentle low of 2.4 m/s (5 mph) in August. As autumn approaches, the air begins to invigorate, hinting at the change of seasons, while the wind speeds tend to remain fairly stable throughout the fall months ahead. With October and November echoing September's calm yet refreshing gusts, this time of year offers a perfect blend of warmth and crispness, inviting both locals and visitors alike to embrace the enchanting charm of Sleepy Hollow during its picturesque fall.
The weather in Sleepy Hollow 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 Sleepy Hollow and find detailed weather information for every month.
September and January present a stark contrast in weather. In September, temperatures range from a mild 8°C (47°F) to a warm average of 20°C (69°F), peaking at a hot 33°C (91°F). The month typically experiences 98 mm (3.8 in) of rain over 9 days, accompanied by moderate humidity at 68%. In contrast, January brings frigid temperatures, with a minimum of -18°C (0°F) and an average of 0°C (33°F), reaching a maximum of 18°C (64°F). Precipitation is lighter in January, totaling 69 mm (2.7 in) over about 8 days, but humidity is notably higher at 84%. For those interested in more details about the weather during this winter month, check out Sleepy Hollow weather in January.
September and February present starkly contrasting weather conditions. In September, temperatures range from a mild 8°C (47°F) at night to a warm 33°C (91°F) during the day, with an average temperature of 20°C (69°F). Despite experiencing 98 mm of precipitation over 9 days, the humidity is relatively comfortable at 68%. In stark contrast, February plunges into colder temperatures, with nighttime lows of -16°C (3°F) and daytime highs reaching only 20°C (68°F), averaging just 2°C (35°F). This month sees slightly higher precipitation at 101 mm over 11 days, with humidity levels rising to 82%. For more detailed insights into February weather, visit Sleepy Hollow weather in February.
When comparing the weather in September and March, notable differences emerge. September typically enjoys warmer temperatures, ranging from a minimum of 8°C (47°F) to a maximum of 33°C (91°F), with an average temperature of 20°C (69°F). In contrast, March is much cooler, with minimum temperatures plummeting to -10°C (15°F) and a more modest maximum of 24°C (76°F), averaging just 5°C (41°F).
Though both months experience a similar amount of precipitation—September slightly higher at 98 mm (3.8 in) and March at 93 mm (3.7 in)—March has a higher humidity level at 81% compared to September's 68%. These factors contribute to a distinct seasonal atmosphere in each month. For a closer look at March weather specifics, refer to Sleepy Hollow weather in March.
September and April present quite different weather patterns. In September, temperatures start to warm up, with averages around 20°C (69°F) and a maximum reaching 33°C (91°F), while the minimum rests at 8°C (47°F). This month sees a total precipitation of 98 mm (3.8 in) over about 9 days, accompanied by a moderate humidity level of 68%. In contrast, April experiences cooler temperatures, with a minimum of -2°C (30°F), an average of 10°C (51°F), and a maximum of 27°C (81°F). Precipitation is slightly higher in April at 114 mm (4.5 in) over 12 days, along with increased humidity at 78%. For a detailed look at what to expect, check out Sleepy Hollow weather in April.
In comparing the weather of September and May, September tends to be warmer overall, with average temperatures reaching 20°C (69°F) compared to May's 16°C (61°F). September experiences a wider temperature range, with minimums around 8°C (47°F) and maximums peaking at 33°C (91°F), whereas May has lower minimums at 2°C (36°F) and maximums of 31°C (89°F). Both months bring significant precipitation, with May receiving 114 mm (4.5 in) over 12 days, slightly more than September's 98 mm (3.8 in) over 9 days. Additionally, humidity levels remain similar, around 68% in September and 69% in May. For more detailed insights into May's weather, you can check Sleepy Hollow weather in May.
In comparing the weather of September and June, both months feature similar temperature ranges but with slight variations. September boasts a minimum temperature of 8°C (47°F) and an average of 20°C (69°F), peaking at 33°C (91°F), while June slightly edges with a minimum of 9°C (49°F), an average of 21°C (71°F), and a maximum of 34°C (93°F). Precipitation is fairly comparable, with September receiving 98 mm (3.8 in) over 9 days, whereas June sees a bit less at 91 mm (3.6 in) over 12 days. Humidity levels also remain closely aligned, with September at 68% and June at 69%. For more details on the specific climate conditions, you can refer to Sleepy Hollow weather in June.
September weather is marked by a wider temperature range compared to July, with minimums dropping to 8°C (47°F) and maximums reaching up to 33°C (91°F). In contrast, July maintains warmer temperatures, featuring a minimum of 16°C (60°F) and a maximum of 35°C (96°F). Despite having lower average temperatures, September experiences slightly less rainfall, accumulating 98 mm (3.8 in) over 9 days, while July sees higher precipitation at 143 mm (5.6 in) over 13 days. Humidity levels are also slightly higher in September at 68%, compared to 62% in July. For more details on July's climate specifics, you can explore Sleepy Hollow weather in July.
In comparison to August, September experiences a noticeable drop in minimum temperatures, averaging 8°C (47°F) compared to August's milder 15°C (59°F). The average temperature in September is around 20°C (69°F), somewhat cooler than August's warmer 24°C (75°F). Although September sees slightly less precipitation at 98 mm (3.8 in) over 9 days, compared to the 123 mm (4.8 in) over 14 days in August, the humidity remains relatively comparable at 68% in September versus 65% in August. For more detailed insights on the weather in August, visit Sleepy Hollow weather in August.
In comparing the weather between September and October, September features a wider temperature range with a minimum of 8°C (47°F) and an average of 20°C (69°F), peaking at a maximum of 33°C (91°F). Additionally, it experiences less precipitation with 98 mm (3.8 in) over 9 days, and the humidity is lower at 68%. In contrast, October sees cooler temperatures overall, with a minimum of 3°C (38°F), an average of 15°C (60°F), and a maximum of 32°C (90°F). This month also records more precipitation, totaling 132 mm (5.2 in) across 11 days, with an increase in humidity to 74%. For more detailed insights, check out Sleepy Hollow weather in October.
In September, the weather is considerably warmer, with temperatures ranging from a cool 8°C (47°F) to a hot 33°C (91°F) and an average of 20°C (69°F). This month experiences about 98 mm (3.8 in) of precipitation over approximately 9 days, with humidity at a comfortable 68%. In contrast, November brings a notable drop in temperatures, with lows reaching as low as -9°C (15°F) and an average temperature of just 8°C (46°F), peaking at 23°C (74°F). Though November sees slightly less precipitation at 86 mm (3.4 in) over the same number of rainy days, the humidity rises to 82%, making it feel much chillier. For a detailed look at what to expect during this month, check out Sleepy Hollow weather in November.
The transition from September to December brings a stark change in weather patterns. In September, temperatures range from a mild 8°C (47°F) to a warm 33°C (91°F), with an average of 20°C (69°F), and the month sees around 98 mm (3.8 in) of precipitation over 9 days and a relatively comfortable humidity of 68%. In contrast, December plunges into winter, with temperatures dropping significantly, ranging from a frigid -12°C (11°F) to a maximum of 17°C (63°F), averaging around 3°C (38°F). This month also experiences slightly higher precipitation at 111 mm (4.4 in) over 11 days, accompanied by increased humidity at 80%. For more insights, you can visit Sleepy Hollow weather in December.
As September unfolds in Sleepy Hollow, the weather begins to transition from the warmth of summer to the cooler embrace of autumn. Daytime temperatures still reach a pleasant high, but the evenings cool down significantly, offering a refreshing contrast. This month is marked by a notable amount of rainfall, with nearly a third of its days experiencing precipitation. As humidity lingers, it creates a unique atmosphere that feels both invigorating and crisp. Overall, September serves as a bridge between the heat of summer and the chill of fall, making it a month of change and renewal. For a deeper dive into the seasonal patterns, visit Sleepy Hollow Climate.