Last updated: February 24, 2025
In September, Borrego Springs experiences a striking climate marked by high temperatures that can soar to a sweltering 46°C (114°F), with an average of 29°C (84°F) providing warmth during the day. Nights cool off to about 12°C (54°F), offering some relief. Rainfall is scarce, registering only 7 mm (0.3 in) over a mere 1 day throughout the month, while humidity hovers around 52%, adding a touch of moisture to the otherwise dry desert air. This unique weather pattern makes September a captivating time to experience the beauty of Borrego Springs.
In September, Borrego Springs experiences a notable transition from the intense heat of summer to milder temperatures. With minimums averaging around 12°C (54°F) and maximums soaring to a sweltering 46°C (114°F), the climate remains notably warm, but the average temperature settles at a comfortable 29°C (84°F). This trend highlights the valley's enduring summer, though the early fall days offer a hint of the cooler evenings ahead. As September progresses, visitors can relish in the sun-baked desert landscape while enjoying the gradual reprieve from the peak heat that defines the summer months.
In September, Borrego Springs experiences a modest uptick in precipitation, receiving 7 mm (0.3 in) of rain over a single day. This slight increase marks a gentle transition from the dry summer months, where rainfall was almost negligible in July and August. Overall, September fits into the broader pattern of the year; it typically serves as a bridge toward the wetter months ahead, showcasing a gradual rise in moisture after the almost parched summer. While the total rainfall is still low compared to the winter months, it provides a refreshing contrast to the typically arid climate, hinting at the seasonal shifts and the arrival of potentially wetter days in the coming fall.
In September, Borrego Springs experiences a notable shift in humidity as it rises to 52%, marking a gentle increase from the drier summer months. This uptick contrasts sharply with the low of 42% reached in August, signaling the gradual transition toward the more humid autumn months. As temperatures begin to cool, the humidity levels gradually ascend, suggesting a shift in seasonal dynamics that prepares the desert for a more comfortable climate ahead. Following a pattern established earlier in the year, this increase in moisture levels aligns with the overall trend of rising humidity moving into the fall, as temperatures fall and the environment becomes more inviting.
In September, Borrego Springs experiences an extreme UV Index of 11, indicating a continued need for caution in sun exposure, much like the preceding months of July and August. This trend highlights the region's persistent high levels of ultraviolet radiation throughout the summer, which can lead to a rapid burn time of just 10 minutes for unprotected skin. As the month transitions into October, the UV Index begins to decrease to 8, indicating a slight respite from the intense solar radiation. This pattern underscores the importance of sun safety measures during late summer and early fall in Borrego Springs, ensuring that residents and visitors protect themselves even as the weather begins to cool. For detailed UV forecasts, check out the Borrego Springs UV Index.
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As summer glides into autumn, September in Borrego Springs continues to bask in abundant sunshine, with 323 hours of brilliant daylight. This month marks a subtle shift from the peak summer glow, which reached a high of 379 hours in July, gradually retreating to more moderate yet still generous sunlight as autumn advances. With a gradual decline in daylight hours from the sizzling heights of summer, September offers a perfect balance, allowing visitors to enjoy warm days while starting to feel the gentle touch of fall. The steady availability of sunny skies, together with cooler evenings, makes this time ideal for outdoor adventures amid the region’s striking desert landscapes.
As summer transitions to fall, Borrego Springs experiences a remarkable balance of sun and warmth in September, boasting an impressive 87% chance of sunny weather. This peak in sunshine is consistent with the trend observed in the previous months, where August enjoys an 88% likelihood and May reaches a stunning 89%. Although July dips to 61%, the month before and after show a strong presence of sunshine. This trend indicates that while summer may be winding down, September remains a prime time for outdoor activities under clear skies, providing locals and visitors alike with ample opportunities to soak up the sun.
As September unfolds in Borrego Springs, the region experiences a gentle transition in daylight hours, offering 12 hours of sunlight. This shift marks a gradual decline from the peak 14 hours seen in June and July, signaling the approach of fall. Following the vibrant summer months, where daylight lingers longest, September introduces a softer, more balanced rhythm of light and shade. As we move into October, daylight diminishes further to 11 hours, continuing the trend of shorter days that accompany the changing seasons. This ebb and flow of daylight not only affects daily activities but also enriches the scenic beauty of the area, making each September sunset a perfect opportunity to savor the tranquil desert landscape.
In September, Borrego Springs experiences a gentle breeze with an average wind speed of 2.0 m/s (4 mph), mirroring the calmness greeted during the preceding months of summer. This subtle shift in wind patterns signals a transition, as the region's winds peak in the late spring before gradually tapering off. Notably, March brings the highest winds at 2.2 m/s (5 mph), while the year's progression showcases a gradual decline, particularly evident from late summer into early fall. As the seasons change, the September winds blend seamlessly with the warm desert air, creating a tranquil atmosphere perfect for enjoying the stunning landscapes of this unique oasis.
The weather in Borrego Springs 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 Borrego Springs and find detailed weather information for every month.
September and January present contrasting weather patterns. In September, temperatures soar, with averages reaching a warm 29°C (84°F) and peaks soaring to a scorching 46°C (114°F). The month experiences minimal precipitation, with only about 7 mm (0.3 in) over just one day, and humidity sits at a comfortable 52%. In stark contrast, January brings cooler temperatures, with an average of 13°C (56°F) and a maximum of 27°C (80°F). This winter month sees more precipitation, totaling 24 mm (0.9 in) over three days, and carries higher humidity at 72%. For a more detailed look at January weather, you can refer to Borrego Springs weather in January.
September and February present notably contrasting weather conditions. In September, temperatures soar, with a minimum of 12°C (54°F) and an average high reaching a scorching 46°C (114°F), while precipitation is minimal at just 7 mm (0.3 in) over only one day of the month. The humidity hovers around 52%, making the heat feel somewhat bearable. In stark contrast, February experiences cooler temperatures, with a minimum of 1°C (34°F) and an average high of 28°C (83°F). This month sees more precipitation, totaling 27 mm (1.1 in) across three days, and the humidity increases significantly to 77%. For a more detailed look at February weather, check out Borrego Springs weather in February.
In comparing the weather of September and March, one can see notable differences in temperature and humidity. September boasts warmer temperatures, with a minimum of 12°C (54°F) and an average of 29°C (84°F), reaching highs of up to 46°C (114°F). Despite this heat, the humidity is relatively moderate at 52%, and there is minimal precipitation with only 7 mm (0.3 in) occurring over just one day.
Conversely, March presents a cooler climate, with temperatures ranging from a minimum of 3°C (37°F) to an average of 17°C (62°F), and a maximum of 32°C (90°F). The month sees increased precipitation, totaling 19 mm (0.7 in) over two days, and a higher humidity level at 67%. For more detailed information on March weather, you can visit Borrego Springs weather in March.
When comparing the weather in September and April, it’s evident that September tends to be much hotter. The average temperature in September reaches a sweltering 29°C (84°F), with maximum temperatures soaring to 46°C (114°F), while April features a milder average temperature of 21°C (70°F) and a peak of 37°C (99°F). Both months see similar precipitation levels—7 mm in September and 9 mm in April—but notably, April experiences no rainy days compared to September's single day of rainfall. Additionally, humidity levels are slightly higher in April at 56% compared to September’s 52%. For more details about the climate during April, you can visit Borrego Springs weather in April.
When comparing the weather in September to that of May, there are notable differences in temperature and humidity. September experiences a more pronounced heat wave, with average temperatures reaching 29°C (84°F) and maximums soaring up to 46°C (114°F). In contrast, May is significantly milder, featuring an average temperature of 24°C (75°F) and a maximum of 39°C (103°F). Additionally, September has slightly higher humidity at 52% compared to May's 46%, but both months have low precipitation, with September receiving 7 mm (0.3 in) over a day and May recording just 3 mm (0.1 in) with no rainy days. For more details, you can check out Borrego Springs weather in May.
In comparing the weather of September and June, both months experience high average temperatures, with September averaging around 29°C (84°F) and June slightly warmer at 30°C (86°F). However, September can reach higher peak temperatures, with a maximum of 46°C (114°F), while June's maximum is slightly lower at 44°C (112°F). Precipitation is minimal in both months, with June receiving no measurable rainfall compared to September's 7 mm (0.3 in) over just one day. Interestingly, humidity levels are marginally higher in September at 52% compared to June's 48%. For more detailed insights, you can explore Borrego Springs weather in June.
In comparing the weather of September and July, September offers a milder range of temperatures, with a minimum of 12°C (54°F) and an average of 29°C (84°F), peaking at a maximum of 46°C (114°F). In contrast, July features higher minimums and averages, starting at 19°C (66°F) with an average of 33°C (91°F) and a maximum of 44°C (112°F). Precipitation in September is slightly lower at 7 mm (0.3 in) over just one day, compared to July's 10 mm (0.4 in) spread over two days, while humidity remains comparable with September at 52% and July at 46%. For more detailed insights into July's weather patterns, you can explore Borrego Springs weather in July.
In comparing the weather between September and August, September presents slightly cooler temperatures, with a minimum of 12°C (54°F), an average of 29°C (84°F), and a maximum of 46°C (114°F). In contrast, August features higher minimum and average temperatures, starting at 20°C (69°F) and averaging 33°C (91°F), though it reaches a similar maximum of 44°C (112°F). Precipitation levels are comparable, with September receiving 7 mm (0.3 in) over just 1 day, while August recorded less rain at 6 mm (0.2 in) without any rainy days. Additionally, September has a higher humidity level at 52%, compared to August's 42%. For more detailed insights, you can visit Borrego Springs weather in August.
September tends to be much hotter than October, with average temperatures reaching a sweltering 29°C (84°F) and maximums soaring to 46°C (114°F). In contrast, October sees a significant drop, with an average temperature of 23°C (73°F) and maximums peaking at 39°C (103°F). While both months experience minimal precipitation, with September receiving 7 mm (0.3 in) and October only 5 mm (0.2 in), October also has a slightly higher humidity level at 58% compared to September's 52%. For a detailed comparison of conditions, check out the Borrego Springs weather in October.
In September, the weather in Borrego Springs typically features warm temperatures, with a minimum of 12°C (54°F) and an average high reaching a scorching 29°C (84°F), peaking at an extreme 46°C (114°F). Rain is scarce, with only 7 mm (0.3 in) of precipitation over just one day, and humidity levels average around 52%. In contrast, November brings cooler temperatures, with a minimum of 4°C (40°F) and a much milder average of 18°C (64°F), maxing out at 32°C (89°F). Although precipitation slightly increases to 9 mm (0.3 in) over the same one day, humidity rises to 66%, creating a noticeably different atmosphere. For more details, check out Borrego Springs weather in November.
In comparing the weather between September and December, September boasts significantly warmer temperatures, with averages ranging from a minimum of 12°C (54°F) to a scorching maximum of 46°C (114°F). In contrast, December presents a cooler climate, with temperatures ranging from a chilly minimum of 1°C (33°F) to a pleasant average of 13°C (55°F). Additionally, December experiences increased humidity at 74%, along with more precipitation, totaling 25 mm (1.0 in) over three days, compared to September's minimal 7 mm (0.3 in) of rain over just one day. For more details on the December climate, you can check Borrego Springs weather in December.
September in Borrego Springs brings a unique blend of warmth and dryness that sets it apart from the preceding summer months. While temperatures still reach sweltering highs, the average warmth begins to feel more comfortable as the nights cool down, providing a pleasant escape from the intense summer heat. With only a mere 7 mm of precipitation over just one day, the humidity hovers around 52%, creating a dry environment that is characteristic of late summer. This transition period showcases Borrego Springs' ability to deliver beautiful desert days, making September an excellent choice for those seeking to enjoy the stunning landscapes and outdoor adventures. For more insights into the climate variability throughout the year, check out Borrego Springs Climate.