Last updated: March 17, 2025
In September, Rochester experiences a delightful interplay of seasonal shifts, with maximum temperatures reaching a pleasant 27°C (81°F) and an average of 15°C (60°F), offering a diverse climate for outdoor activities. As early autumn breezes begin to circulate, temperatures can drop to a refreshing minimum of 4°C (40°F). However, the month is not without its rain, as 46 mm (1.8 in) of precipitation typically falls over 10 days, contributing to the region's lush greenery. With humidity levels hovering around 80%, residents and visitors alike can expect a muggy yet invigorating atmosphere that perfectly encapsulates the charm of Rochester in September.
As September rolls into Rochester, United Kingdom, the air begins to cool, marking a noticeable transition from the summer warmth. With average temperatures settling at 15°C (60°F), this month strikes a balance between the lingering heat of summer and the cooler embrace of autumn. Morning temperatures start at a brisk 4°C (40°F), but the afternoons can see pleasant highs around 27°C (81°F), offering opportunities for outdoor enjoyment before the chill of October arrives. This moderate climate, characterized by diminishing extremes, allows residents and visitors alike to savor the beauty of autumn's onset, making it a picturesque time to explore the area's parks and historical sites while the foliage begins to change.
In September, Rochester experiences a relatively mild drop in rainfall, with precipitation totaling 46 mm (1.8 in) over approximately 10 days. This month marks a transition from the wetter summer months of July and August, which saw 59 mm (2.3 in) and 72 mm (2.8 in), respectively. Despite the decrease, September’s rainfall remains consistent with the more moderate levels recorded in early spring, signaling a gentle shift towards autumn. As the days grow shorter and the temperatures begin to fall, Rochester prepares for the wetter conditions typical of the upcoming months, with October expected to bring a significant rise in precipitation to 78 mm (3.1 in).
As September arrives in Rochester, United Kingdom, the humidity begins to climb back up after the summer months, settling at a comfortable 80%. This slight increase follows the year’s lowest levels recorded in July and August, where the humidity dipped to 76% and 73%, respectively. However, September’s figures indicate a shift towards the wetter months ahead, with the atmosphere becoming more saturated as autumn approaches. Interestingly, this uptick in humidity aligns with the patterns observed in early autumn, as the surrounding months of October and November are known for their higher humidity levels, reaching 89% and 92%. Thus, Rochester's September serves as a gentle reminder of the year’s cyclical nature, bridging the warmth of summer and the moisture of fall.
In September, Rochester, United Kingdom experiences a UV Index of 5, placing it in the moderate exposure category. This means that while the risk for harm from unprotected sun exposure is moderate, caution is still advised, particularly during midday hours. With a burn time of around 30 minutes, residents and visitors are encouraged to seek shade and wear protective clothing during peak sun hours to avoid overexposure. As summer ends, September marks a noticeable decline from the intense levels seen in July and August, when the UV Index reached 8. However, sunlight can still be potent, making it essential to stay informed and prepared. For more detailed information, you can visit Rochester UV Index.
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As summer gently transitions into autumn, September in Rochester boasts a delightful 312 hours of sunshine, marking a significant dip from the sun-drenched months of July and August but still offering a generous glow. This month showcases the lingering warmth of late summer, as it trails behind the vibrant 410 hours of May and 414 hours of July. The sunny days of September provide a beautiful backdrop for outdoor activities, yet hint at the cooler, cloudier months ahead. With sunshine gradually decreasing, October is set to bring just 247 hours, reminding us that summer's golden embrace is slowly giving way to the crisp bite of autumn. Embrace the September sunshine while it lasts, as Rochester prepares for the seasonal shifts!
In Rochester, UK, September offers a moderate 31% chance of sunny weather, indicating a slight uptick from the summer months. Notably, this month stands out in the transition from the balmy days of summer, where July peaks at 40%, to the cooler fall months that follow. While July remains the sunniest month, September's sun probability aligns closely with October and November, suggesting a consistent potential for clear skies that can enhance outdoor activities. As the season shifts, residents and visitors alike can remain hopeful for a pleasant blend of sunlit days as summer gives way to autumn's charm.
As summer fades into autumn, September in Rochester, United Kingdom witnesses a notable shift in daylight duration. Following the sun-drenched months of June and July, which bask in 16 hours of daylight, September sees a gentle decline to 12 hours. This transition reflects the natural rhythm of the seasons as the days grow shorter, yet still retain a warm glow reminiscent of summer's charm. Following September, daylight further decreases to 10 hours in October, hinting at the approaching embrace of winter when daylight dwindles to a mere 7 hours in December. This gradual shift serves as a reminder of the cyclical nature of light and dark, inviting residents to savor the lingering sunshine before the darker months settle in.
As September rolls into Rochester, UK, the average wind speed gently settles at 3.5 m/s (8 mph), marking a notable dip compared to the brisker summer months. This transition reflects a consistent trend observed throughout the year, with wind speeds gradually declining from their summer highs of 4.1 m/s in August. Following the peak spring winds, which hovered more robustly around 4.6 m/s in March, the autumn months usher in a crispness that softens the breezes. As the season shifts and cooler air begins to prevail, September’s winds offer a serene close to summer, making way for October’s brisk return to 4.6 m/s. This pattern not only underscores the variability of Rochester's weather but also hints at the seasonal changes that define the region’s unique charm.
The weather in Rochester 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 Rochester and find detailed weather information for every month.
When comparing the weather in September and January, there are notable differences in temperature and humidity. September boasts milder temperatures, with a minimum of 4°C (40°F) and a comfortable average of 15°C (60°F), peaking at a maximum of 27°C (81°F). In contrast, January features colder conditions, with temperatures dropping to a minimum of -4°C (25°F) and an average of just 5°C (41°F), reaching a high of 14°C (58°F). Additionally, while both months experience around 10 days of precipitation, January has a slightly higher total precipitation at 51 mm (2.0 in) compared to September’s 46 mm (1.8 in). The humidity levels also rise in January to 91%, compared to September's 80%. For more information about January weather, you can visit Rochester weather in January.
September weather in Rochester showcases a mild climate with average temperatures ranging from a cool 15°C (60°F) to a warm 27°C (81°F). In contrast, February presents a much chillier atmosphere, with temperatures averaging around 6°C (44°F) and dipping as low as -5°C (22°F). Although both months experience overcast skies and precipitation, February tends to be slightly wetter with 52 mm (2.0 in) of rain compared to September’s 46 mm (1.8 in). Additionally, February’s humidity is higher at 89%, making it feel colder than the milder, yet still humid, September at 80%. For more detailed information, you can check out Rochester weather in February.
September and March present contrasting weather patterns. In September, temperatures range from a chilly 4°C (40°F) at night to a warm 27°C (81°F) during the day, with an average of 15°C (60°F). There is moderate precipitation of 46 mm (1.8 in) over about 10 days, and humidity is relatively high at 80%. In contrast, March is noticeably colder, with minimum temperatures dropping to -5°C (23°F) and an average of only 8°C (46°F), peaking at 20°C (69°F). Precipitation increases slightly to 50 mm (2.0 in) across 13 days, and humidity climbs to 86%. For more detailed information, check out Rochester weather in March.
In comparing the weather between September and April, we notice distinct differences in temperature and precipitation patterns. September typically enjoys a wider temperature range, with minimums of 4°C (40°F) and highs reaching up to 27°C (81°F), while April's temperatures start colder, with lows of -1°C (31°F) and a maximum of 24°C (76°F). Additionally, September experiences slightly higher precipitation at 46 mm (1.8 in) over about 10 days compared to April's 30 mm (1.2 in) over 8 days. Humidity levels are also notably high, with September at 80% and April slightly higher at 85%. For more detailed insights into April's weather patterns, you can visit Rochester weather in April.
In comparing the weather between September and May, September generally experiences warmer temperatures, with averages hovering around 15°C (60°F) and peak temperatures reaching up to 27°C (81°F). In contrast, May sees slightly cooler averages at 13°C (55°F) and a maximum of 25°C (78°F). While both months have similar humidity levels—80% in September and 82% in May—May does experience a bit more precipitation, totaling 64 mm (2.5 in) across 11 days compared to September's 46 mm (1.8 in) over 10 days. For more details, check out Rochester weather in May.
In September, the weather begins to cool down with temperatures ranging from a minimum of 4°C (40°F) to a maximum of 27°C (81°F), averaging around 15°C (60°F). The month also sees an average of 46 mm (1.8 in) of precipitation over approximately 10 days, coupled with a humidity level of 80%. In contrast, June offers warmer conditions, with temperatures ranging from a minimum of 7°C (46°F) to a maximum of 30°C (87°F) and an average temperature of 17°C (62°F). It receives more rainfall, totaling about 70 mm (2.8 in) across 9 days, while maintaining a similar humidity level of 81%. For more detailed information, you can check Rochester weather in June.
When comparing the weather in September and July, there are notable differences in temperature and precipitation. July tends to be warmer, with average temperatures ranging from a minimum of 10°C (50°F) to a maximum of 35°C (95°F), while September experiences cooler averages, with temperatures starting at a minimum of 4°C (40°F) and peaking at 27°C (81°F). Additionally, July sees slightly more precipitation, with an average of 59 mm (2.3 in) over 11 days compared to September's 46 mm (1.8 in) over 10 days. Despite the higher temperatures in July, September's humidity is a bit higher at 80% compared to July's 76%. For a detailed look at July's weather patterns, visit Rochester weather in July.
In comparing the weather of September to that of August, we see notable differences in temperature and precipitation. September generally experiences cooler temperatures, with a minimum of 4°C (40°F) and an average of 15°C (60°F), compared to August's minimum of 9°C (49°F) and average of 18°C (65°F). The maximum temperature in September reaches 27°C (81°F), significantly lower than August's maximum of 34°C (93°F). In terms of precipitation, September sees 46 mm (1.8 in) over 10 days, while August has higher precipitation at 72 mm (2.8 in) across 11 days. Additionally, humidity levels are slightly higher in September at 80%, as opposed to August’s 73%. For more details, you can check Rochester weather in August.
In comparing the weather between September and October, September tends to be warmer and slightly drier. The minimum temperature in September is 4°C (40°F), with an average of 15°C (60°F) and a maximum of 27°C (81°F), whereas October sees cooler temperatures, ranging from a minimum of 2°C (35°F) to an average of 12°C (54°F) and a maximum of 23°C (74°F). Rainfall also increases in October, with 78 mm (3.1 in) spread over 13 days compared to September’s 46 mm (1.8 in) over 10 days. Additionally, humidity rises from 80% in September to 89% in October, contributing to a noticeably more damp atmosphere. For more details on the weather in October, you can visit Rochester weather in October.
In September, temperatures range from a mild 4°C (40°F) at night to a warm 27°C (81°F) during the day, with an average of 15°C (60°F). The month experiences 46 mm (1.8 in) of precipitation over 10 days and maintains a humidity level of around 80%, making it feel quite comfortable. In contrast, November brings cooler temperatures, with a minimum dipping to -1°C (31°F) and a maximum of 17°C (63°F), averaging at 8°C (47°F). This month also has similar precipitation levels of 46 mm (1.8 in) over 10 days, but the humidity increases to 92%, contributing to a much chillier and damp atmosphere. For more detailed information, you can visit Rochester weather in November.
Comparing the weather in September and December reveals a significant shift in temperature and conditions. In September, temperatures range from a mild 4°C (40°F) at night to a comfortable maximum of 27°C (81°F) during the day, averaging around 15°C (60°F). The month also sees 46 mm (1.8 in) of precipitation over about 10 days, with humidity levels around 80%. In contrast, December brings a much colder climate, with minimum temperatures dipping to -2°C (29°F) and maximums only reaching up to 14°C (58°F), resulting in an average temperature of 7°C (44°F). Rainfall increases to 85 mm (3.3 in) spread over 13 days, and humidity rises to 92%, contributing to a distinctly more uncomfortable feel. For more detailed information, you can check Rochester weather in December.
As September draws to a close, Rochester's weather showcases a delightful transition from the warmth of summer to the crispness of autumn. With maximum temperatures still reminiscent of summer highs, the average cools down significantly, making the air feel refreshingly brisk. However, don’t forget your umbrella, as this month typically features a notable amount of rainfall spread across several days, contributing to the lush greenery of the surrounding landscape. The humidity lingers, reminding us of the warmer months even as the leaves begin their colorful descent. For a deeper dive into how Rochester's weather shifts throughout the year, check out Rochester Climate.