Last updated: February 24, 2025
Experience the September weather at the breathtaking Delaware Water Gap, where temperatures swing from a chilly minimum of 3°C (37°F) to a balmy maximum of 32°C (90°F). With an average temperature of 19°C (66°F), this month offers a delightful mix of warm days and cool evenings. Prepare for occasional showers, as precipitation totals around 120 mm (4.7 in) over approximately 10 days, contributing to the region's lush scenery. Humidity levels hover at a comfortable 66%, creating ideal conditions for exploring the natural beauty that this stunning area has to offer.
As summer transitions into fall, September in the Delaware Water Gap offers a delightful shift in temperatures. The month begins with a fresh minimum of 3°C (37°F), providing a crispness that hints at the cooler days ahead, while the average temperature reaches a comfortable 19°C (66°F). This average is a gentle decline from the sweltering peaks of August, which experience highs of 33°C (92°F). In September, the maximum temperatures still flirt with the summer warmth, peaking at a pleasant 32°C (90°F), making it perfect for outdoor activities while the foliage starts to showcase its autumn colors. Overall, September strikes a balance between the lingering warmth of summer and the encroaching chill of autumn, inviting visitors to enjoy the best of both seasons.
In September, the Delaware Water Gap experiences a moderate precipitation total of 120 mm (4.7 in), continuing a trend of substantial rainfall from the preceding months. This rainfall is typically distributed across about 10 days, marking a slight decrease after the wetter months of July and August, which recorded 139 mm and 146 mm, respectively. Notably, September's precipitation aligns closely with April's totals, suggesting the beginning of a transitional period as summer fades. The consistent rainfall throughout the late summer and into early autumn contributes to the lush landscapes in the area, making it a picturesque time to explore the outdoors. As the year progresses into autumn, the precipitation patterns set the stage for the vibrant fall foliage that the region is renowned for.
As summer fades away, September marks a subtle transition in humidity levels at Delaware Water Gap. After reaching a low of 62% in August, the humidity begins to creep back up to 66%, signaling the approach of autumn. This slight increase continues the trend of fluctuating humidity throughout the year, showcasing a unique rhythm where colder months bring elevated levels, peaking at 87% in January and November. Overall, September's humidity captures the essence of seasonal change, offering a comfortable yet refreshing atmosphere as the leaves start to turn.
As September approaches in Delaware Water Gap, the UV Index remains notably high at 8, indicating a continued risk of harm from unprotected sun exposure. This trend reflects a gradual decline from the peak summer months, where the UV Index reached a maximum of 10 in both June and July, but nonetheless demands caution with a burn time of just 15 minutes. The shifting UV levels throughout the year highlight the importance of sun safety, particularly as summer transitions towards fall. Visitors should stay informed and protect their skin while enjoying the stunning outdoors. For more details, check out the Delaware Water Gap UV Index.
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As autumn approaches in the Delaware Water Gap, September offers a beautiful transition with 270 hours of sunshine, making it one of the sunniest months of the year. This month serves as a delightful bridge, following the peak sun of July and August, which bask in 332 and 306 hours respectively. The steady decline in sunlight from the summer months to October reflects the natural rhythm of the seasons, with October plummeting to 213 hours. However, September still maintains a vibrant brightness, allowing for plenty of outdoor adventures amidst the stunning fall foliage. As the daylight hours wane, the warmth of early autumn invites visitors and locals alike to savor the lingering sunshine before winter sets in.
As September rolls into the Delaware Water Gap, the chances of sunny weather rise significantly, with a notable 44% likelihood of sun, placing it among the more favorable months for outdoor activities. This increase comes after the summer months, where the sunniest days were not guaranteed, particularly in July (43%) and August (31%). Interestingly, September's sun probability is a welcoming transition towards autumn, surpassing the relatively low chances seen in early summer and rivaling the moderate forecasts of spring. As we look towards the latter months of the year, the sunny outlook begins to fluctuate again, dipping back down to 33% in October. This trend suggests that while September offers a lovely balance of warmth and sunshine, it's a fleeting opportunity before the cloudier days of fall settle in.
As summer fades into autumn, September in the Delaware Water Gap offers a gentle transition in daylight that reflects the changing seasons. With 12 hours of daylight, this month marks a significant decrease from the lively 14 hours in July and 13 hours in August, emphasizing the gradual approach of shorter days ahead. This subtle decline signals the onset of cooler temperatures and prepares the landscape for the vibrant hues of fall. September’s sunlight offers a balance of warmth and beauty, inviting outdoor explorers to enjoy the last sweet remnants of summer before the days shorten further into October’s 11 hours.
As summer fades and September arrives in the Delaware Water Gap, there's a gentle shift in the breeze. The average wind speed in September reaches 2.8 m/s (6 mph), marking a subtle increase from the calmer days of July and August, both of which experience a mere 2.2 m/s (5 mph). This slight uptick suggests a transition, as the cooler air begins to dance through the region, hinting at the invigorating autumn to come. Observing the trend throughout the year, wind speeds generally decline in the warmer months, only to reclaim some vigor as fall approaches. September acts as a sweet spot, bridging the slower summer winds and the slightly brisker gusts expected in October, creating a refreshing atmosphere that invites exploration and reflection in this picturesque landscape.
The weather in Delaware Water Gap 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 Delaware Water Gap and find detailed weather information for every month.
In September, the weather is pleasantly warm, with average temperatures ranging from a cool 3°C (37°F) at night to a warm 32°C (90°F) during the day. This month experiences relatively high humidity at 66% and sees about 120 mm (4.7 in) of precipitation over approximately 10 days. In contrast, January brings a stark chill, with temperatures dipping as low as -20°C (-4°F) and only reaching a daytime maximum of 17°C (62°F). Despite having less precipitation at 76 mm (3.0 in) over 9 days, January's high humidity level of 87% contributes to the frigid feel of the season. For a deeper dive into conditions specific to this time of year, check out Delaware Water Gap weather in January.
September and February present stark contrasts in weather conditions. In September, temperatures range from a minimum of 3°C (37°F) to a maximum of 32°C (90°F), with an average of 19°C (66°F), making it a warm month characterized by moderate humidity at 66% and approximately 120 mm (4.7 in) of rainfall over about 10 days. In contrast, February is significantly colder, with temperatures dipping as low as -21°C (-6°F) and averaging around 0°C (33°F). The maximum temperature in February reaches 24°C (75°F), but the month is accompanied by higher humidity at 85% and similar precipitation levels of 109 mm (4.3 in) spread across 12 days. For more details on the weather conditions during this month, you can visit Delaware Water Gap weather in February.
September and March present contrasting weather experiences. In September, temperatures range from a cool 3°C (37°F) at night to a warm 32°C (90°F) during the day, with an average of 19°C (66°F). This month sees a moderate amount of precipitation (120 mm) spread over about 10 days, accompanied by a humidity level of 66%. In stark contrast, March is much chillier, with nighttime lows plummeting to -19°C (-2°F) and daytime highs reaching a maximum of 25°C (76°F), averaging just 3°C (39°F). While March experiences slightly less precipitation at 97 mm over 11 days, it has higher humidity at 85%. For those interested in detailed weather patterns, you can explore Delaware Water Gap weather in March.
September and April present contrasting weather conditions. In September, temperatures range from a minimum of 3°C (37°F) to a maximum of 32°C (90°F), with an average of 19°C (66°F) and a humidity level of 66%. The month experiences about 120 mm (4.7 in) of precipitation over approximately 10 days. Conversely, April features cooler temperatures, ranging from a minimum of -4°C (25°F) to a maximum of 28°C (83°F) and an average of 10°C (49°F). This month has a higher humidity of 83%, with similar precipitation of 120 mm (4.7 in) over around 12 days. For more detailed insights, you can check this link: Delaware Water Gap weather in April.
When comparing the weather in September and May, notable differences emerge despite some similarities in temperature extremes. September offers a warmer average temperature of 19°C (66°F), while May's average is cooler at 15°C (60°F). Both months can experience peaks reaching up to 32°C (90°F), but May begins with colder nights, featuring a minimum temperature of -1°C (30°F) compared to September's milder 3°C (37°F). Precipitation is slightly higher in May, with 144 mm (5.7 in) over 14 days, while September sees 120 mm (4.7 in) across 10 days, reflecting a more humid climate in May at 75% versus September's 66%. For those interested in exploring the specific weather patterns during May, here's a detailed resource: Delaware Water Gap weather in May.
When comparing the weather in September and June, notable differences arise in temperature, precipitation, and humidity. September typically sees a minimum temperature of 3°C (37°F) and an average high of 32°C (90°F), while June has slightly higher minimums at 6°C (42°F) and a comparable maximum of 33°C (92°F). Precipitation is similar, with September experiencing 120 mm (4.7 in) over 10 days and June receiving 106 mm (4.2 in) across 12 days. Additionally, humidity is generally higher in June at 73%, compared to September's 66%. For more insights about the weather during this month, you can refer to Delaware Water Gap weather in June.
In comparing the weather of September and July, we find notable differences in temperature and precipitation. September experiences a wider temperature range, with minimums dropping to 3°C (37°F) and maximums reaching up to 32°C (90°F), while the average is around 19°C (66°F). In contrast, July has milder minimums at 12°C (53°F) and maximums peaking at 35°C (95°F), resulting in a comfortable average of 24°C (75°F). Both months see considerable rainfall, with September totaling 120 mm (4.7 in) over 10 days and July slightly wetter at 139 mm (5.5 in) over 13 days. Humidity levels are similar, hovering around 65-66%. For a detailed look into July's specific weather patterns, check out Delaware Water Gap weather in July.
In comparing the weather of September and August, September experiences a broader temperature range, with minimums dropping to 3°C (37°F) and maximums reaching 32°C (90°F), compared to August's milder minimum of 11°C (52°F) and similar maximum of 33°C (92°F). The average temperature in September is slightly cooler at 19°C (66°F) than August's average of 22°C (72°F). Precipitation is slightly lower in September at 120 mm (4.7 in) over 10 days, while August sees more rain at 146 mm (5.7 in) across 15 days. Humidity levels are marginally higher in September at 66%, compared to August's 62%. For a closer look at August weather specifics, check Delaware Water Gap weather in August.
In September, the weather is characterized by warmer temperatures, with averages around 19°C (66°F) and a maximum reaching up to 32°C (90°F). Humidity levels are moderate at 66%, and the month experiences about 120 mm (4.7 in) of rainfall over 10 days. In contrast, October brings a noticeable drop in average temperature to 13°C (56°F), with morning lows reaching as low as 0°C (32°F) while still maintaining a peak of 31°C (88°F). The humidity increases to 79%, and the month receives slightly more precipitation at 143 mm (5.6 in) over 12 days. For more details on specific conditions, you can visit Delaware Water Gap weather in October.
September and November present stark contrasts in weather patterns. In September, temperatures range from a mild 19°C (66°F) to a warm 32°C (90°F), contributing to an average temperature of about 19°C (66°F). The month experiences considerable precipitation of 120 mm (4.7 in) over approximately 10 days, with humidity levels at 66%, creating a warm and humid atmosphere. In contrast, November brings a much colder climate, with average temperatures plummeting to around 5°C (42°F) and minimums dropping to a chilly -15°C (6°F). Although precipitation decreases to 95 mm (3.7 in) across 9 days, the humidity rises significantly to 87%, resulting in a notably damp and cool environment. For more detailed weather information in November, you can check Delaware Water Gap weather in November.
September and December showcase stark contrasts in weather. In September, temperatures range from a mild 3°C (37°F) at night to a warm 32°C (90°F) during the day, with an average of 19°C (66°F). The month experiences moderate humidity at 66% and around 120 mm (4.7 in) of precipitation over roughly 10 days. Conversely, December brings much colder conditions, with temperatures plunging to a minimum of -14°C (7°F) and reaching a maximum of 16°C (62°F), averaging just 1°C (34°F). Although precipitation remains similar at 112 mm (4.4 in) over 11 days, December sees a notably higher humidity level at 85%. For more specific weather details, visit Delaware Water Gap weather in December.
September in the Delaware Water Gap marks a transition into the cooler embrace of autumn, contrasting sharply with the summer's peak heat. While maximum temperatures may still reach a balmy 32°C (90°F), the average settles around a comfortable 19°C (66°F), creating a more pleasant outdoor experience. This month also experiences increased precipitation, with about 120 mm falling over approximately 10 days, which adds a refreshing touch to the landscape. With humidity around 66%, the air feels distinctly different from the dry summer months. As nature begins its transformation, September offers a unique blend of warmth and the crispness of fall, making it an ideal time for exploring the stunning scenery. For more details on the climate in this beautiful region, visit Delaware Water Gap Climate.