Last updated: February 24, 2025
In September, Oak Glen experiences a diverse range of temperatures, with maximums soaring up to 42°C (107°F) and a comfortable average of 23°C (73°F). The nights can be much cooler, dipping to a minimum of 8°C (46°F). Alongside this temperature variation, the month brings a modest 10 mm (0.4 in) of precipitation over just 1 day, resulting in a humidity level of 52% that adds to the region's characteristic climate. This blend of warmth and minimal rainfall creates an inviting atmosphere for outdoor activities while highlighting the natural beauty of Oak Glen during early autumn.
In September, Oak Glen experiences a notable transition with temperatures reflecting the shift from summer to autumn. The minimum temperature hovers around a comfortable 8°C (46°F), while the average soars to a pleasant 23°C (73°F), making it an ideal time for outdoor activities. However, the maximum temperatures can still reach an impressive 42°C (107°F), reminiscent of the lingering warmth from summer. This month marks a significant cooling compared to the peak summer months, yet it retains a taste of heat, creating a unique blend of seasonal change. As nature begins to prepare for fall, visitors can enjoy the vibrant scenery accompanied by mild, enjoyable temperatures, perfect for exploring the beautiful landscapes of this charming region.
In September, Oak Glen experiences a notable yet modest precipitation total of 10 mm (0.4 in), mirroring the light rainfall typical of the late summer months. Only one day of rainfall marks this month, contributing to a trend of diminishing precipitation as the region transitions towards autumn. This pattern is indicative of the generally dry stretch experienced from late spring through summer, where minimal rain has characterized the preceding months. As temperatures begin to cool, September sets the stage for the return of more regular precipitation in October and beyond, heralding the onset of a wetter season as winter approaches.
In September, humidity in Oak Glen settles at a moderate 52%, marking a slight increase from the drier summer months of June, July, and August, which saw humidity levels plummet to as low as 42%. As the seasons transition, this uptick signals a gradual shift towards the more humid conditions typical of fall. Observing the annual patterns, we see a clear trend: humidity generally peaks in the colder months, reaching its highest at 77% in February, before tapering off to the dry heat of late summer. This cyclical rhythm not only influences the local climate but also enhances the vibrant autumn scenery as moisture returns to the air.
As the September sun graces Oak Glen, the UV Index sits at a notable 10, categorizing exposure as very high and indicating a burn time of merely 15 minutes. This month marks a slight dip from the peak summer months, yet it still reflects the persistent intensity of late summer sun. From January’s moderate index of 4 to the extreme readings seen in May and June, the trend reveals a significant increase in UV strength as the seasons shift. As fall approaches, residents are reminded to remain vigilant and practice sun safety. For more detailed information, visit the Oak Glen UV Index.
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As summer gently fades, September in Oak Glen welcomes a warm embrace of sunshine, delivering an impressive 321 hours of radiant daylight. This month marks a slight dip from the sun-soaked heights of July and August, which basked in 382 and 363 hours, respectively. However, September remains firmly above the spring averages, signaling an extended summer glow as it transitions towards fall. With daylight diminishing gradually, the air becomes crisper while the sun continues to play a generous role in the changing landscape, making it a delightful time for outdoor activities amid the backdrop of vibrant autumnal hues. The consistent decline from the peak of summer sets an anticipatory mood for the cozy months ahead, while still allowing ample opportunity to enjoy the serene beauty of Oak Glen.
In Oak Glen, the likelihood of sunny weather in September reaches an impressive 87%, making it one of the sunniest months of the year. This trend of increasing sunshine begins in the spring, with May already boasting an 80% chance, and continues to peak during late summer with August’s 83%. As the year transitions from the hazier summer months of July and June, which see significantly lower percentages of sunlight, September stands out as a delightful time for outdoor activities. Following this sunny highlight, the likelihood of sunshine starts to decline again in October, reinforcing the perception that September is a pivotal moment to soak up those golden rays before the cooler weather sets in.
As summer gives way to autumn in Oak Glen, United States, September marks a gentle transition in daylight duration, offering approximately 12 hours of sunlight each day. This gradual decrease follows the peak of 14 hours in both June and July, showcasing the natural ebb and flow of seasons. While the days may be shortening, they still provide ample light to savor the vibrant fall colors and the crisp air that hints at the upcoming cozy months. This trend of gradually diminishing daylight continues into October, where the daylight dips to 11 hours, emphasizing the approaching winter months. Such changes remind us of nature's rhythm, encouraging a deeper appreciation for each moment of sunlight.
As summer gracefully gives way to autumn, September in Oak Glen witnesses a gentle lull in wind speed, averaging 1.8 m/s (4 mph). This dip marks the lowest point in the yearly cycle, following a consistent pattern of mild breezes from the preceding months. While January to August maintained an average between 2.0 to 2.2 m/s, signaling a more active air movement, September invites a tranquil ambiance, perfect for those seeking a serene escape among the changing leaves. As the days shorten and the weather cools, this shift not only reflects a transition in seasons but also enhances the beauty of the Oak Glen landscape, allowing nature's colors to take center stage amidst the softer winds.
The weather in Oak Glen 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 Oak Glen and find detailed weather information for every month.
September and January present stark contrasts in weather. September boasts a comfortable average temperature of 23°C (73°F) with highs reaching a scorching 42°C (107°F), while January sees much cooler temperatures with an average of 9°C (49°F) and a maximum of 26°C (79°F). Precipitation patterns also differ significantly; September experiences minimal rainfall of just 10 mm (0.4 in) over a single day, whereas January has a notable increase with 62 mm (2.4 in) spread over six days. Additionally, January has higher humidity levels at 72%, compared to September's 52%, making the latter feel more arid. For those interested in a detailed look at January weather, you can check Oak Glen weather in January.
September and February present stark contrasts in weather. In September, temperatures range from a minimum of 8°C (46°F) to a scorching maximum of 42°C (107°F), with an average temperature of 23°C (73°F). Precipitation is minimal, with only 10 mm (0.4 in) falling over just one day, and humidity levels sit at a comfortable 52%. In contrast, February experiences much cooler conditions, with temperatures dipping as low as -7°C (20°F) and averaging just 9°C (49°F), while reaching a maximum of 25°C (78°F). This month sees significantly more precipitation, totaling 66 mm (2.6 in) over seven days, and a higher humidity level of 77%. For a more detailed look at February conditions, you can check Oak Glen weather in February.
In comparing the weather of September and March, notable differences emerge. September typically enjoys warmer temperatures, with a minimum of 8°C (46°F) and an average high reaching up to 42°C (107°F), while March experiences cooler conditions, with temperatures ranging from a minimum of -2°C (29°F) to a maximum of 28°C (83°F). Precipitation also varies significantly; September sees only about 10 mm (0.4 in) of rain over just 1 day, whereas March has much higher levels, averaging 57 mm (2.3 in) across 10 days, contributing to a higher humidity of 67% compared to September's 52%. For a more detailed look at March weather, you can visit Oak Glen weather in March.
In September, the weather tends to be much warmer, with average temperatures reaching up to 23°C (73°F) and a maximum of 42°C (107°F). The precipitation during this month is relatively low, averaging just 10 mm (0.4 in) over one day, and humidity hovers around 52%. In contrast, April experiences cooler temperatures, with an average of 15°C (59°F) and a maximum of 32°C (89°F). This month sees slightly higher precipitation at 26 mm (1.0 in) over two days and a humidity level of 56%. For more detailed information on weather patterns, you can explore Oak Glen weather in April.
When comparing the weather in September and May, notable differences emerge. September tends to be warmer, with average temperatures around 23°C (73°F) and maximum highs reaching up to 42°C (107°F), resulting in a drier atmosphere with just 10 mm (0.4 in) of precipitation over only one day. In contrast, May experiences cooler temperatures, with an average of 17°C (62°F) and a maximum of 33°C (92°F), along with slightly more rainfall at 15 mm (0.6 in) distributed over four days. This makes September feel hotter and drier, while May is milder and brings a bit more moisture to the air. For more information, you can check out Oak Glen weather in May.
In comparing the weather between September and June, we see some subtle yet notable differences. September tends to have slightly warmer average temperatures, with a minimum of 8°C (46°F), an average of 23°C (73°F), and a maximum soaring up to 42°C (107°F). In contrast, June has a similar minimum at 8°C (47°F), but the average temperature is just a touch lower at 22°C (72°F), with a maximum of 38°C (101°F). Both months experience low precipitation, but September has a marginally higher amount at 10 mm (0.4 in) compared to June's 3 mm (0.1 in), and both share a similar number of rainy days at one. Humidity levels are slightly higher in June at 48% compared to 52% in September. For more detailed insights, you can check Oak Glen weather in June.
In comparing the weather between September and July, September tends to feature a wider range of temperatures, with minimums dipping to 8°C (46°F) and maximums peaking at 42°C (107°F), while July's minimum is slightly higher at 11°C (53°F) and a maximum of 40°C (105°F). The average temperature in July is also a bit warmer at 25°C (78°F), compared to September's 23°C (73°F). Precipitation is relatively low for both months, with July seeing a total of 13 mm (0.5 in) of rain over 2 days, while September has slightly less, with 10 mm (0.4 in) on just 1 day. Additionally, September has a higher humidity level at 52%, compared to 46% in July, giving it a different feel despite the warmer average temperatures. For more detailed information on July weather, you can visit Oak Glen weather in July.
In comparison to August, September experiences a notable drop in minimum temperatures, starting at 8°C (46°F) versus August's 13°C (56°F). The average temperature also shifts slightly lower, with September averaging 23°C (73°F) compared to August's 25°C (78°F). Despite the maximum temperature in September reaching 42°C (107°F), the humidity is higher in September at 52%, compared to August's 42%. Both months receive similar precipitation levels, with 10 mm (0.4 in) recorded over fewer days in September. For a more detailed overview of weather conditions, check out Oak Glen weather in August.
In comparing the weather between September and October, we see a notable shift in temperature and humidity. September boasts a minimum temperature of 8°C (46°F) and an average of 23°C (73°F), with highs reaching up to 42°C (107°F). In contrast, October brings a cooler atmosphere with a minimum temperature of 3°C (38°F) and an average of 18°C (64°F), peaking at 36°C (97°F). While both months experience similar low levels of precipitation at 10 mm (0.4 in) and 11 mm (0.4 in) respectively, October exhibits slightly higher humidity levels at 58% compared to September's 52%. For more detailed information, you can visit Oak Glen weather in October.
September and November present stark contrasts in weather. In September, temperatures can rise dramatically, with a minimum of 8°C (46°F) and an average high reaching up to 42°C (107°F), contributing to a generally warm and dry month with only 10 mm (0.4 in) of rainfall over just 1 day. In comparison, November sees a notable drop in temperatures, with minimums falling to -1°C (31°F) and a milder average of 14°C (57°F), along with increased precipitation of 23 mm (0.9 in) spread over 2 days and higher humidity at 66%. For a detailed overview of November conditions, you can check Oak Glen weather in November.
In September, temperatures are typically much warmer, with an average of 23°C (73°F) and maximums soaring up to 42°C (107°F). The month experiences minimal rainfall, averaging just 10 mm (0.4 in) over about one day, and humidity levels are relatively moderate at 52%. In contrast, December brings a significant drop in temperatures, with averages around 9°C (49°F) and maximums reaching 25°C (77°F). The precipitation also increases considerably, totaling 59 mm (2.3 in) over five days, accompanied by higher humidity levels at 74%. For more details on the December climate in this region, you can visit Oak Glen weather in December.
As summer transitions into autumn, September in Oak Glen ushers in a notable change in weather. With cooler temperatures compared to the sweltering heights of July and August, this month strikes a pleasant balance, showcasing a drier atmosphere and lower humidity levels. While the warmth of the sun still lingers, occasional cool breezes replace the oppressive heat, making outdoor ventures enjoyable. This month only sees a sprinkle of precipitation, allowing for plenty of sunny days perfect for exploring the stunning landscapes of Oak Glen. For those curious about the annual fluctuations, check out the full details at Oak Glen Climate.