Last updated: February 24, 2025
September in Roswell, United States, showcases a dramatic temperature range, with maximums reaching a sweltering 38°C (101°F) and minimums dipping to a cool 6°C (42°F). On average, the month offers a pleasant 24°C (75°F), providing a comfortable backdrop for outdoor activities. Despite the warmth, precipitation totals 39 mm (1.5 in), occurring over 6 days, hinting at occasional showers that contribute to the overall humidity level of 71%. This blend of heat and moisture creates a unique climate, ideal for experiencing the transition from summer to autumn.
In September, Roswell experiences a delightful transition as summer gradually gives way to fall. The temperatures reflect this change, with minimums starting at 6°C (42°F) and reaching an inviting average of 24°C (75°F). While the maximum temperature can still soar up to 38°C (101°F), the overall trend indicates a gentle cooling from the sweltering highs of August. This month marks a shift where warm days are often paired with cooler evenings, making it an ideal time for outdoor activities and enjoying the vibrant colors of early autumn. The warming trend earlier in the year, peaking in July and August, gives way to this moderate climate, providing a pleasant and comfortable atmosphere as Roswell welcomes the changing season.
September in Roswell sees a notable shift in precipitation patterns, with 39 mm (1.5 in) of rain falling over 6 days. This marks a decline from August's heavier showers, which brought in 53 mm (2.1 in) across 8 days. As summer transitions to fall, the rainfall typically becomes less frequent but more substantial compared to earlier months. For instance, June to August experiences a gradual increase in precipitation, peaking in August, before September’s rainfall settles into a more moderate rhythm. This trend reflects Roswell's climatic changeover, balancing the region’s dry desert characteristics with the wetness of late summer, setting the stage for the drier months ahead.
In September, Roswell experiences a notable humidity level of 71%, slightly higher than the more temperate summer months of June, July, and August, which hover around 66-69%. This increase hints at the transition into fall, where the air begins to retain a bit more moisture as temperatures cool. Interestingly, September's humidity is on par with October's reading, suggesting a stable climatological shift that leads into the wetter months ahead. As the year progresses, humidity peaks notably in November at 82% and remains elevated through December, creating a clear trend of rising humidity towards the end of the year. This seasonal pattern illustrates Roswell's gradual transition from summer dryness to the richer, more humid conditions of late autumn and winter.
As summer fades into autumn, September's UV Index in Roswell, United States, reflects a slight decline yet remains at a robust level of 10, categorized as very high. This means that while the burn time increases to 15 minutes, the need for protection against harmful UV radiation is still critical, especially compared to the extreme levels experienced in the peak summer months of June through August. Interestingly, September marks a transition, indicating that while the intensity of the sun begins to decrease, vigilance remains essential as we head into October, where the index drops further to 8. The consistent high UV readings throughout the year underscore the importance of sun safety. For detailed information and trends on UV exposure, visit Roswell UV Index.
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As summer wanes and the calendar flips to September, Roswell basks in a generous 302 hours of sunshine, marking a warm transition into autumn. This figure highlights a subtle yet noticeable dip from the sun-soaked peak of 371 hours in July, yet it remains comfortably above the winter months. From the promising brightness of 206 hours in January to the vibrant 360 hours in May, Roswell experiences a steady climb in solar radiance leading into summer. September's ample sunshine signals a continuation of outdoor enjoyment before the cooler months emerge, embracing both warmth and light as the year begins its slow retreat into winter’s embrace.
In Roswell, United States, September boasts a 72% chance of sunny weather, aligning it with the sunniest months of the year. This figure reflects a continuation of the upward trend seen from June to August, where the likelihood of sunshine begins to rebound after a dip during the peak of summer. Notably, it is on par with the promising conditions of January and March, which also enjoy a strong 72% sunshine likelihood. With October following closely with an impressive 85%, September serves as a bridge to a vibrant fall season, encouraging outdoor activities and basking in the warm, golden light that characterizes this beautiful time of year.
As the summer months gracefully transition into autumn, September in Roswell, United States, offers a comforting balance with around 12 hours of daylight. Following the peak of summer, where daylight reaches its height at 14 hours in June and July, the daylight gradually diminishes, reflecting nature's shift toward cooler weather. This subtle decline from the vibrant light of August marks the beginning of a cozy fall atmosphere, inviting residents to embrace the beauty of seasonal changes. With each passing day, the shorter daylight hours serve as a gentle reminder of the approaching autumn, creating a perfect backdrop for outdoor activities and evening gatherings.
In September, Roswell experiences a gentle shift in its wind dynamics, with an average speed of 3.6 m/s (8 mph). This month marks a slight increase from the summer's calm breezes, particularly following the notably low wind speeds of July and August. The winds gradually pick up as autumn approaches, although they remain on the milder side compared to the gustier months of March through May. This subtle rise in wind speeds suggests a transition, offering a refreshing contrast to the stillness of the preceding summer months, while staying consistent with the generally moderate winds that characterize Roswell's climate throughout the year.
The weather in Roswell 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 Roswell and find detailed weather information for every month.
September and January present stark contrasts in weather. In September, temperatures range from a minimum of 6°C (42°F) to a scorching average high of 38°C (101°F), accompanied by 39 mm (1.5 in) of precipitation over six days. The humidity sits at a relatively comfortable 71%. In contrast, January brings much colder conditions, with temperatures dipping to a minimum of -12°C (11°F) and an average high of only 26°C (80°F). Precipitation is significantly lower at 11 mm (0.4 in) over just two days, and humidity increases slightly to 75%. For a detailed look at January weather in Roswell, you can visit Roswell weather in January.
September and February present strikingly different weather conditions. In September, temperatures range from a minimum of 6°C (42°F) to a scorching maximum of 38°C (101°F), with an average temperature of 24°C (75°F). This month sees about 39 mm (1.5 in) of precipitation over 6 days, and the humidity hovers around 71%. In contrast, February offers a chilly environment with temperatures varying from a frigid -16°C (4°F) to a milder maximum of 31°C (88°F), resulting in an average of only 8°C (47°F). Precipitation is significantly lower at 11 mm (0.4 in) over just 2 days, and humidity levels remain relatively high at 74%. For more detailed information, check out Roswell weather in February.
September and March present contrasting weather patterns. In September, temperatures range from a cool minimum of 6°C (42°F) to a scorching maximum of 38°C (101°F), with an average temperature of 24°C (75°F). The month typically experiences 39 mm (1.5 in) of precipitation over six days, coupled with relatively high humidity at 71%. In contrast, March sees much cooler conditions, with temperatures dipping to a minimum of -6°C (21°F) and rising to a maximum of 32°C (89°F), leading to an average of 13°C (56°F). Precipitation is less frequent in March, totaling 20 mm (0.8 in) over just three days, and humidity is lower at 61%. For a more detailed look into March weather, visit Roswell weather in March.
The weather in September is typically warmer than in April, with average temperatures reaching around 24°C (75°F) compared to April's 18°C (64°F). September can see maximum temperatures soaring up to 38°C (101°F), while April's peak is a much cooler 35°C (95°F). Additionally, September experiences more precipitation, averaging 39 mm (1.5 in) over about 6 days, whereas April has a lighter average of 17 mm (0.7 in) over just 2 days. Humidity levels are also higher in September at 71%, compared to 61% in April. For a detailed look at April weather, visit Roswell weather in April.
September and May present contrasting weather patterns. In September, temperatures range more dramatically, with a minimum of 6°C (42°F) and highs reaching up to 38°C (101°F), leading to an average temperature of 24°C (75°F). This month also experiences higher humidity at 71% and more total precipitation, with an average of 39 mm (1.5 in) spread over six days. In contrast, May generally has milder conditions, with a minimum temperature of 2°C (36°F) and a slightly lower average of 23°C (74°F), peaking at 39°C (102°F). Additionally, May is drier, boasting only 14 mm (0.5 in) of precipitation over three days and a lower humidity of 67%. For more specific details on May weather, check Roswell weather in May.
When comparing the weather in September and June, a few notable differences emerge. September experiences a wider temperature range, with lows of 6°C (42°F) and highs reaching up to 38°C (101°F), while June maintains consistently higher temperatures, with minimums around 12°C (55°F) and peaks hitting 43°C (109°F). Both months see a moderate level of precipitation, with September receiving 39 mm (1.5 in) over 6 days and June slightly less at 30 mm (1.2 in) over 5 days. Humidity levels are similar, with September at 71% and June slightly lower at 69%. For a more detailed look at June's weather, you can visit Roswell weather in June.
In comparing the weather between September and July, we see notable differences in temperature and precipitation patterns. September experiences a broader temperature range, with minimums dipping to 6°C (42°F) and maximums reaching up to 38°C (101°F), while the average temperature sits at a comfortable 24°C (75°F). In contrast, July maintains higher temperatures, with a minimum of 18°C (65°F), an average of 29°C (84°F), and soaring maximums of 43°C (109°F), indicative of a hotter summer month. Additionally, September receives more rainfall, totaling 39 mm (1.5 in) over about 6 days, while July has slightly less at 23 mm (0.9 in) over 7 days of precipitation. Both months have similar humidity levels, with September at 71% and July at 69%. For more details on July weather, you can visit Roswell weather in July.
When comparing the weather in September to that of August, noticeable differences emerge. September generally experiences cooler temperatures, with a minimum of 6°C (42°F) and an average of 24°C (75°F), in contrast to August's warmer minimum of 16°C (61°F) and average of 27°C (81°F). The maximum temperatures also differ, with September peaking at 38°C (101°F), while August reaches higher at 42°C (108°F). Additionally, September has slightly less precipitation at 39 mm (1.5 in) over 6 days, compared to August's 53 mm (2.1 in) over 8 days. Interestingly, September maintains a higher humidity level of 71%, compared to August's 66%. For a deeper look at August’s conditions, visit Roswell weather in August.
September experiences a warm transition with temperatures ranging from a minimum of 6°C (42°F) to a maximum of 38°C (101°F), accompanied by an average temperature of 24°C (75°F). With 39 mm (1.5 in) of precipitation over about 6 days, humidity remains high at 71%. In contrast, October brings a noticeable drop in nighttime temperatures, reaching as low as -6°C (22°F), while the average temperature cools to 17°C (63°F) and daytime highs peak at 36°C (96°F). Precipitation slightly decreases to 36 mm (1.4 in) over 5 days, yet humidity stays consistent at 71%. For more specifics about October weather, you can refer to Roswell weather in October.
September typically boasts warmer temperatures, with average highs reaching up to 38°C (101°F) and a pleasant humidity level of 71%. In contrast, November brings a significant drop in temperatures, where the average high is only 31°C (88°F), and nighttime lows can plummet to -6°C (22°F). Additionally, November experiences much less precipitation, with only 9 mm (0.3 in) across just 2 days, compared to September's 39 mm (1.5 in) over 6 days. For more detailed information on November weather, you can check Roswell weather in November.
September and December present stark contrasts in weather. In September, temperatures soar, with averages around 24°C (75°F) and highs reaching up to 38°C (101°F), while humidity sits at 71%. The month also sees some rainfall, with around 39 mm (1.5 in) of precipitation occurring over about six days. In contrast, December experiences a significant drop in temperatures, with averages around 7°C (45°F) and nighttime lows plummeting to -9°C (16°F). Additionally, December is drier, receiving only 8 mm (0.3 in) of precipitation over two days, but it is marked by higher humidity at 80%. For more details on December weather, check out Roswell weather in December.
As September arrives in Roswell, it marks a notable transition in weather compared to the preceding months. With average temperatures dipping to a more comfortable 24°C (75°F), the stifling heat of summer gradually gives way to milder days. While the maximum highs can still soar to a blistering 38°C (101°F), the evenings offer a refreshing contrast, often dropping to a cool 6°C (42°F). This month also sees a slight uptick in precipitation, with a total of 39 mm across about 6 days, providing much-needed relief from the dry spell of earlier months. Coupled with a humidity level at 71%, September offers a unique blend of warmth and moisture, making it an intriguing time to experience the evolving climate of Roswell. For more insights on what to expect throughout the year, visit Roswell Climate.