Last updated: February 24, 2025
Experience the stunning September weather in Palm Desert, United States, where the maximum temperature can soar to an impressive 43°C (110°F), while the average comfortably rests at 26°C (79°F). As the sun sets, nighttime temperatures can dip to a refreshing 9°C (49°F). This month sees very little moisture, with only 5 mm (0.2 in) of rain recorded on merely 1 day, offering plenty of opportunities for outdoor adventures. With a humidity level of 52%, the air remains relatively dry, ensuring a warm yet pleasant atmosphere for residents and visitors alike.
In September, Palm Desert experiences a notable transition as summer gradually yields to autumn. The average temperature sits at a comfortable 26°C (79°F), offering a perfect blend of warmth without the extreme highs of the peak summer months. Mornings are pleasantly mild with minimums around 9°C (49°F), allowing for refreshing starts to the day, while the afternoons can soar to a sizzling 43°C (110°F), reminiscent of the heights of July and August. This month marks a slight cooling trend from the intense summer heat, yet retains a hint of summer's lingering allure, making it an inviting time for visitors to enjoy outdoor activities against a backdrop of stunning desert landscapes.
In September, Palm Desert experiences a notable transition as the summer heat begins to wane, with precipitation measuring just 5 mm (0.2 in) over the month. This modest amount typically falls over the course of just one day, reflecting a continued trend of minimal rainfall that defines the late-summer months. As we move from August's brief wetness, marked by 8 mm spread across two days, September's dry spell becomes evident. This pattern of drought-like conditions persists through late summer, with May and June recording no precipitation at all. While the air remains warm, the slight moisture hints at the subtle shifts in the desert climate, foreshadowing the more substantial rains that typically return by late autumn. As such, September stands out not just for its arid tendencies, but also as a subtle prompt for the impending seasonal changes ahead.
In September, Palm Desert experiences a noticeable uptick in humidity, reaching 52%, which is a modest rise from the drier summer months, where levels dipped to as low as 42% in August. This shift marks the beginning of a gradual increase in moisture leading into the fall, contrasting sharply with the dry heat typical of summer. As the year progresses, October and November see even higher humidity, with levels at 58% and 66%, respectively. Overall, while Palm Desert is renowned for its arid climate, the transition into September brings a refreshing hint of moisture, signaling the onset of a season characterized by a more comfortable, albeit still warm, atmosphere as it prepares for the cooler months ahead.
September in Palm Desert continues the trend of intense sun exposure seen throughout the summer months, maintaining an UV Index of 11, categorized as extreme. This level of UV radiation means you should be extra cautious while enjoying outdoor activities, as your skin may start to burn in just 10 minutes. Following the peak of summer, where the UV Index consistently hit 12, September retains the need for sun safety without significant relief in exposure levels. As the month transitions into October, the UV Index will drop to 8, signaling a shift to very high exposure, allowing for slightly longer sun-soaked days without the immediate risk of sunburn. For more details on UV exposure in this area, visit Palm Desert UV Index.
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September in Palm Desert is a delightful transition month, basking in an impressive 324 hours of sunshine that signals the end of summer while still embracing its warmth. After the peak summer months, where sunlight peaked around 381 hours in July, the days begin to shorten, yet the radiant sun continues to grace the desert landscape. As autumn approaches, this drop in sunlight is gentle compared to the earlier months, with September sitting comfortably amidst an array of sunny days, making it a perfect time for outdoor activities. The gradual decrease in daylight hours from September onwards is a precursor to the milder and more temperate months ahead, creating an inviting atmosphere for both residents and visitors alike to savor the sun-kissed beauty of Palm Desert.
In Palm Desert, September shines brightly with an impressive 87% chance of sunny weather, tying with August for the highest likelihood of sun this time of year. This trend of abundant sunshine is particularly appealing as summer transitions into fall, offering residents and visitors alike a final taste of summer's warmth. Notably, this month stands out against the cooler months that follow, such as October, which offers a still inviting 74% chance of sun. Overall, September encapsulates the essence of desert sunshine, ensuring that outdoor activities can flourish under clear, blue skies.
As summer gives way to autumn in Palm Desert, September brings a gentle shift in daylight duration, offering 12 hours of sunshine each day. This marks a gradual decline from the peak of 14 hours experienced in June and July, highlighting a seasonal transition. The steady decrease continues into October, where daylight dips to 11 hours, although it's still notably longer than the 10 hours seen in the winter months. Interestingly, September retains more daylight than both January and February, emphasizing the lingering warmth of summer even as the days begin to shorten. This blend of moderate daylight allows residents to relish the outdoors, making it an ideal time for outdoor activities as the temperatures start to cool.
In September, Palm Desert experiences a gentle average wind speed of 2.2 m/s (5 mph), marking a slight uptick from the previous summer months. This consistent breeze not only offers a welcome respite from the late-summer heat but also sets the stage for the refreshing change of seasons ahead. As the winds begin to mellow from the higher speeds observed in the spring, September's air carries a hint of transition. This softened flow is part of a broader trend as the region moves toward autumn, where wind speeds gradually stabilize at lower levels, hinting at the calm, serene days to come.
The weather in Palm Desert 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 Palm Desert and find detailed weather information for every month.
September and January present strikingly contrasting weather conditions. In September, temperatures range from a mild 9°C (49°F) at night to a sweltering maximum of 43°C (110°F) during the day, with an average high of 26°C (79°F). The month sees minimal precipitation, amounting to just 5 mm (0.2 in) over a single day, along with moderate humidity at 52%. In contrast, January brings a chillier climate, with temperatures dipping to a minimum of -2°C (29°F) and peaking at 25°C (77°F), averaging around 11°C (51°F). This month experiences significantly more rainfall, totaling 37 mm (1.5 in) over four days, and higher humidity levels at 72%. For those interested in details about winter weather, check out Palm Desert weather in January.
When comparing the weather in September and February, there is a notable contrast in temperatures and precipitation levels. September boasts a warm average temperature of 26°C (79°F), reaching as high as 43°C (110°F), while February experiences cooler conditions with an average of 11°C (52°F) and a minimum temperature dropping to -4°C (26°F). Additionally, September is relatively dry with just 5 mm (0.2 in) of precipitation over one day, whereas February sees a significant increase in rainfall, totaling 41 mm (1.6 in) spread across five days. The humidity is also higher in February at 77%, compared to September's 52%. For a closer look at Palm Desert's weather specifics in February, check out this link: Palm Desert weather in February.
In September, temperatures in Palm Desert are typically warmer, with a minimum of 9°C (49°F) and an average of 26°C (79°F), peaking at a scorching 43°C (110°F). The month sees minimal precipitation, only about 5 mm (0.2 in) across just 1 day, and humidity levels are relatively moderate at 52%. In contrast, March brings cooler weather, with temperatures ranging from a minimum of -1°C (31°F) to an average of 13°C (56°F), and a maximum of 30°C (87°F). Additionally, March experiences higher rainfall, with 26 mm (1.0 in) spread over about 5 days, accompanied by a rise in humidity to 67%. For a more detailed look at March weather in Palm Desert, you can visit Palm Desert weather in March.
September and April present distinct weather patterns. In September, temperatures can soar with a minimum of 9°C (49°F) and an average high of 43°C (110°F), whereas April sees cooler temperatures, ranging from a minimum of 4°C (40°F) to a maximum of 34°C (94°F). September tends to be drier with only 5 mm (0.2 in) of precipitation over the course of just one day, while April experiences more rainfall, accumulating 15 mm (0.6 in) over two days. Humidity levels are slightly higher in April at 56%, compared to 52% in September. For more detailed information, check out Palm Desert weather in April.
In comparison, September boasts a broader temperature range, with minimums of 9°C (49°F) and maximums soaring to 43°C (110°F), while May features slightly cooler temperatures, with minimums around 5°C (42°F) and maximums reaching up to 39°C (102°F). Both months experience minimal precipitation, with September receiving 5 mm (0.2 in) over just 1 day and May registering 4 mm (0.2 in) with no rainy days. Humidity levels are also fairly close, at 52% in September and 46% in May, contributing to the overall weather charm. For more detailed insights on May weather, you can check out Palm Desert weather in May.
September and June share similar average temperatures, with both months averaging around 26°C (79°F). However, September experiences a slightly lower minimum temperature of 9°C (49°F) compared to June's minimum of 10°C (50°F). Both months can reach maximum temperatures of up to 43°C (110°F), making them quite warm. In terms of precipitation, September sees a bit more rain with 5 mm (0.2 in) over one day, while June is drier with just 2 mm (0.1 in) and no recorded rainy days at all. Humidity levels are also comparable, with September at 52% and June slightly lower at 48%. For detailed insights on June's weather, you can check Palm Desert weather in June.
When comparing the weather in September and July, we see notable differences in temperature and precipitation patterns. September experiences a wide temperature range, with a minimum of 9°C (49°F) and a scorching max of 43°C (110°F), averaging around 26°C (79°F). In contrast, July boasts a milder minimum temperature of 15°C (59°F) and an average of 30°C (86°F), with a maximum slightly lower at 42°C (107°F). While both months see low precipitation, July has slightly higher rainfall at 11 mm (0.4 in) over 2 days, compared to September's 5 mm (0.2 in) over just 1 day. Additionally, humidity levels are slightly higher in July at 46%, compared to 52% in September. For more detailed insights into July weather, you can check out Palm Desert weather in July.
In September, the weather shows a noticeable shift compared to August. While September boasts a wider temperature range with a minimum of 9°C (49°F) and a maximum of 43°C (110°F), August maintains a warmer minimum of 16°C (62°F) and a slightly lower maximum of 42°C (107°F). The average temperature in September is 26°C (79°F), compared to August's warmer average of 29°C (85°F). Additionally, September experiences less precipitation, with only 5 mm (0.2 in) over just one day, while August sees 8 mm (0.3 in) across two days. Interestingly, September has a higher humidity level of 52% compared to 42% in August, contributing to a different feel in the air. For a more detailed look, check out the Palm Desert weather in August.
In comparing the weather of September and October, September typically experiences hotter days with average temperatures around 26°C (79°F) and peaks reaching as high as 43°C (110°F). The month also boasts minimal rainfall, with only 5 mm (0.2 in) of precipitation over just one day and a humidity level of 52%. In contrast, October brings a noticeable drop in temperature, with average highs around 20°C (68°F) and maximums reaching 37°C (99°F). Precipitation increases slightly to 8 mm (0.3 in) over two days, and humidity levels rise to 58%. For more detailed insights on October weather, you can check out Palm Desert weather in October.
In September, the weather features a wide temperature range with a comfortable average of 26°C (79°F), but can soar as high as 43°C (110°F). This month experiences very little precipitation, with only 5 mm (0.2 in) occurring over just one day and a humidity level of 52%. In contrast, November brings cooler temperatures, with a minimum of 0°C (33°F) and an average of 15°C (59°F), peaking at 29°C (85°F). The month is wetter, receiving 16 mm (0.6 in) of rain over two days, and higher humidity at 66%. For more detailed insights, check out Palm Desert weather in November.
The weather in September is significantly warmer than in December, with average temperatures reaching up to 26°C (79°F) and maximum highs soaring to 43°C (110°F). In contrast, December brings much cooler temperatures, averaging around 10°C (51°F), with a maximum of only 24°C (76°F) and even dipping to a minimum of -1°C (30°F). Additionally, September is characterized by low precipitation, with just 5 mm (0.2 in) falling over one day, while December sees a noticeable increase in rainfall to 37 mm (1.4 in) spread over four days, along with higher humidity levels of 74%. For more details, you can check out Palm Desert weather in December.
As September arrives in Palm Desert, the transition into autumn brings a unique blend of warmth and moderation. With average temperatures settling around an inviting 26°C (79°F), this month showcases less extreme highs compared to the sweltering summer months. The rare precipitation, totaling just 5 mm over a single day, signifies a shift towards drier conditions than the earlier humid summer, while humidity remains at a comfortable 52%. This makes September an ideal time for outdoor activities, as the sweltering heat begins to wane, marking a refreshing change in the desert climate. For more insights into the seasonal weather patterns, explore Palm Desert Climate.