Last updated: February 24, 2025
In September, Signal Hill boasts a delightful climate characterized by warm temperatures and minimal rainfall. The maximum temperature can soar to a sizzling 36°C (97°F), while the average remains a comfortable 22°C (71°F). Nights cool down to a fresh 15°C (60°F), making it an ideal time for outdoor activities. Remarkably, this month experiences no precipitation, with only 3 mm (0.1 in) recorded throughout, resulting in dry and pleasant conditions. With a humidity level of 68%, the weather feels pleasantly moderate, perfect for enjoying the vibrant surroundings of this charming locale.
As September rolls around in Signal Hill, the warmth of summer lingers, providing a delightful transition into autumn. With minimum temperatures hovering around 15°C (60°F) and average highs reaching up to 36°C (97°F), the month showcases the tail end of summer's heat. This month stands out with its striking average temperature of 22°C (71°F), making it one of the warmer months of the year. Interestingly, while temperatures begin to dip slightly from the scorching peaks of July and August, September still offers plenty of sunshine, allowing residents and visitors to savor outdoor activities before the cooler months set in. The gradual shift in temperatures highlights the area's diverse climate, creating a perfect backdrop for seasonal changes and outdoor enjoyment.
September in Signal Hill marks a continuation of the dry summer spell, with precipitation measuring just 3 mm (0.1 in), a stark contrast to the wetter months experienced earlier in the year. Notably, this minimal rainfall falls over an entire month where no precipitation days are recorded, underscoring the area's arid conditions during this period. As the city transitions into fall, October shows a slight uptick in rainfall, but overall, the pattern indicates a trend where late summer and early autumn remain particularly dry. This seasonal dryness typically sets the stage for the more significant precipitation events that emerge later in the year, particularly in December, when rainfall peaks at 70 mm (2.8 in).
As summer fades into fall, September in Signal Hill, United States, marks a significant decline in humidity, dropping to 68%. This decline continues the trend observed throughout the late summer months, where August recorded a slightly higher humidity level of 69%. Following a peak in February at 79%, the overall humidity has been gradually decreasing since the early months of the year, suggesting a transition towards drier conditions as autumn approaches. This shift paves the way for a cooling climate, evident in the steadily decreasing figures, with October expected to see an even lower average of 67%. The gradual drop in humidity not only signifies a welcome respite from the summer heat but also hints at the evolving weather patterns that define the region's seasonal cycle.
As summer transitions into fall, September in Signal Hill maintains a very high UV Index of 10, demanding caution during outdoor activities. This month’s UV levels mirror those of August, suggesting a trend of intense sun exposure as the seasons shift. With a burn time of just 15 minutes, it’s crucial for residents and visitors alike to protect their skin, ensuring they stay shielded from harmful rays. Following September, UV levels are expected to drop in October, reinforcing the need for awareness as we enjoy the last warm days of the year. For detailed information on UV levels throughout the year, check out the Signal Hill UV Index.
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September in Signal Hill delights residents with a robust 315 hours of sunshine, a continuation of the vibrant summer glow that peaks in July. As the sun begins to dip earlier, the city transitions into autumn with slightly reduced daylight, yet it still shines brighter than the start of the year. The month showcases a remarkable increase from January's 191 hours, indicative of the gradual warming trend and longer days that build throughout the year. With each month, the hours of sunshine generally rise until they reach their pinnacle in mid-summer, followed by a gentle decline as fall approaches. This pattern heralds the arrival of cooler days while still basking in ample sunlight, making September a perfect farewell to summer's warmth.
As summer transitions into fall, **September in Signal Hill, United States, showcases a promising likelihood of sunny weather, with a solid 69% chance of sunshine. This trend marks an increase from the relatively cloudy days of May and April, hinting at the lingering warmth and brightness of summer. Following the peaks of August, which boasts a 68% chance, September maintains a favorable level of sunshine, positioning it as an ideal month for outdoor activities. Additionally, as temperatures begin to cool, the consistent sun can be enjoyed without the harsh heat of midsummer, making it a delightful time for both locals and visitors alike.
As September arrives in Signal Hill, daylight begins to gracefully wane, offering 12 hours of sunlight—a reduction from the summer peaks of 14 hours in June and July. This transition marks the start of autumn, where the longer days of summer yield to the cozy embrace of fall. Following the brisk and bright days of late summer, September serves as a gentle reminder that shorter days are on the horizon. The gradual decline in daylight not only signals a change in the seasons but also invites a shift in routines, encouraging the community to savor the warm hues of twilight a bit longer as nature prepares for the cooler months ahead.
As September arrives in Signal Hill, the average wind speed gently tapers to 2.8 m/s (6 mph), echoing the calming shift of the seasons. Following a summer of steady breezes around 3.1 to 3.3 m/s, this month marks a subtle transition, hinting at the approach of fall. Interestingly, the winds from January through March are fairly consistent, starting low and gradually increasing to their peak in early summer before settling back down. This cyclical pattern showcases a rhythm in the weather, with September's soft winds paving the way for the quieter months ahead. As the landscape begins to change, the gentle September breeze invites reflection and the promise of autumn's embrace.
The weather in Signal Hill 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 Signal Hill and find detailed weather information for every month.
September typically boasts warmer temperatures, with a minimum of 15°C (60°F) and an average high of 36°C (97°F), while enjoying very little precipitation at just 3 mm (0.1 in) over the month. In contrast, January experiences cooler conditions, with temperatures ranging from a minimum of 6°C (43°F) to a maximum of 27°C (82°F), accompanied by significantly higher precipitation at 61 mm (2.4 in) spread over five days. Additionally, January's humidity levels are slightly elevated at 74%, compared to September's 68%. For a more detailed look, you can check out the Signal Hill weather in January.
In September, the weather is generally warm, with temperatures ranging from a minimum of 15°C (60°F) to a maximum of 36°C (97°F), and an average temperature of 22°C (71°F). The month is quite dry, featuring only 3 mm of precipitation over no rainy days and experiencing a humidity level of 68%. In contrast, February presents a much cooler climate, with temperatures varying from a minimum of 6°C (43°F) to a maximum of 28°C (83°F), averaging 14°C (58°F). This month is significantly wetter, with 48 mm of rainfall spread over five days, and the humidity rises to 79%. For more detailed weather patterns, check out Signal Hill weather in February.
In September, temperatures are generally much warmer, with a minimum of 15°C (60°F) and a maximum of 36°C (97°F), while the average temperature hovers around 22°C (71°F). The month sees minimal rainfall, averaging only 3 mm (0.1 in) and experiencing no rainy days, contributing to a relatively comfortable humidity level of 68%. In contrast, March offers cooler temperatures, with a minimum of 8°C (47°F), an average of 15°C (59°F), and a maximum of 25°C (77°F). This month is considerably wetter, with precipitation totaling 52 mm (2.1 in) and rain occurring over 8 days, which also leads to a slightly higher humidity level of 75%. For more specific details about March weather, you can visit Signal Hill weather in March.
When comparing the weather between September and April, we see notable differences in temperature and precipitation. September typically enjoys warmer temperatures, with a minimum of 15°C (60°F) and a maximum reaching up to 36°C (97°F), averaging around 22°C (71°F). In contrast, April is cooler, starting at a minimum of 11°C (52°F) and peaking at 32°C (89°F), with an average temperature of 17°C (62°F).
Additionally, September is remarkably dry, with no recorded precipitation days and only 3 mm (0.1 in) of rainfall, while April experiences more rain, totaling 18 mm (0.7 in) over two days. Humidity levels are slightly higher in September at 68%, compared to April’s 70%. For more detailed insights, you can visit Signal Hill weather in April.
In comparing the weather of September and May, September typically enjoys warmer temperatures, with a minimum of 15°C (60°F) and an average of 22°C (71°F), reaching highs of 36°C (97°F). It is largely dry during this month, with only 3 mm (0.1 in) of precipitation recorded on no rainy days and a humidity level of 68%. In contrast, May features cooler temperatures, starting at a minimum of 11°C (53°F) and averaging 17°C (63°F), peaking at 28°C (82°F). This month experiences slightly higher precipitation, averaging 10 mm (0.4 in) over two rainy days, and has a humidity level of 70%. For more detailed insights into the weather during this time, you can check out Signal Hill weather in May.
In comparing the weather of September and June, September tends to be warmer, with average temperatures reaching 22°C (71°F) compared to June's 19°C (66°F). While both months maintain minimal precipitation at 3 mm (0.1 in) with no rainy days, September boasts a higher maximum temperature of 36°C (97°F) versus June's 30°C (87°F). Additionally, September has a humidity level of 68%, slightly lower than June's 72%. For more detailed information, you can check Signal Hill weather in June.
When comparing the weather in September and July, both months exhibit similar high temperatures, with maximums reaching up to 36°C (97°F). However, September has slightly lower average and minimum temperatures, averaging 22°C (71°F) and a minimum of 15°C (60°F), compared to July’s average of 21°C (71°F) and minimum of 16°C (61°F). Additionally, September experiences slightly lower humidity at 68%, in contrast to July's 73%. Both months share an identical precipitation level of 3 mm (0.1 in) and record zero rainy days. For more detailed information about the weather in July, you can visit Signal Hill weather in July.
In comparison to August, September experiences slightly cooler temperatures, with a minimum of 15°C (60°F) compared to August's 16°C (61°F). Both months have the same average temperature of around 22°C (72°F), but September boasts a higher maximum temperature of 36°C (97°F) versus August's 31°C (89°F). Precipitation remains minimal in both months, with September recording just 3 mm (0.1 in) and August slightly less at 1 mm (0.1 in), while humidity levels are quite similar, standing at 68% for September and 69% for August. For more detailed weather information on August, you can visit Signal Hill weather in August.
In September, temperatures range from a minimum of 15°C (60°F) to a maximum of 36°C (97°F), with an average of 22°C (71°F) and no recorded precipitation. The month enjoys relatively high humidity at 68%, offering warm and dry conditions. In contrast, October sees a slight dip in daily temperatures, with a minimum of 12°C (54°F), an average of 20°C (69°F), and a peak of 37°C (98°F). This month experiences some light rain, with a total precipitation of 8 mm (0.3 in) over two days, while humidity remains fairly consistent at 67%. For a closer look at the specifics, check out Signal Hill weather in October.
September typically boasts warmer temperatures, with a range from a minimum of 15°C (60°F) to a high of 36°C (97°F) and an average of around 22°C (71°F). In contrast, November experiences a cooler climate, with temperatures ranging from a minimum of 9°C (48°F) to a maximum of 31°C (88°F) and an average of 17°C (63°F). While September sees virtually no precipitation, November has a bit more moisture, averaging 17 mm (0.7 in) over two rainy days. Despite these differences, both months maintain a consistent humidity level of 68%. For more detailed information, you can check out Signal Hill weather in November.
In September, the weather is characterized by warm temperatures, with averages around 22°C (71°F) and maximums reaching up to 36°C (97°F). The month is quite dry, receiving only 3 mm (0.1 in) of precipitation and experiencing no rainy days, while humidity levels hover at 68%. In contrast, December brings cooler temperatures, with an average of 14°C (58°F) and maximums reaching 26°C (79°F). This month sees significantly higher precipitation, totaling 70 mm (2.8 in) over 4 rainy days, and humidity levels slightly increase to 71%. For more information about December weather, you can visit Signal Hill weather in December.
As September rolls in, Signal Hill experiences a warm embrace with temperatures reaching their peak, offering a delightful contrast to the cooler months that precede it. The month stands out with its remarkable dryness, marked by no precipitation days, making it ideal for outdoor adventures under the sun. With humidity hovering at a comfortable 68%, the weather feels pleasant, blending warmth and a hint of coastal breeze. This month serves as a perfect transition, inviting locals and visitors alike to relish the sunshine before autumn sets in. For more detailed insights on weather patterns, explore Signal Hill Climate.