Last updated: February 24, 2025
In October, Pasadena experiences a delightful climate characterized by a maximum temperature soaring up to 38°C (101°F) and an average of 20°C (68°F), making it a warm and inviting time to explore the area. The minimum temperature dips to a refreshing 6°C (44°F), providing a pleasant contrast to the daytime warmth. With only 9 mm (0.4 in) of precipitation over the course of just 1 day, the month remains predominantly dry, allowing for ample outdoor activities. The humidity level at 59% adds a touch of comfort, ensuring that October in Pasadena is ideal for enjoying the city's vibrant fall atmosphere.
In October, Pasadena enjoys a delightful transition as temperatures begin to cool down, yet the warmth of summer still lingers. With minimums around 6°C (44°F) and average highs peaking at 38°C (101°F), it’s a month of warmth that can still surprise with its heat. The average temperature settles at a comfortable 20°C (68°F), making it perfect for outdoor activities and events. This month showcases a blend of sunny days and cooler evenings, a trend that invites residents and visitors alike to embrace the vibrant fall scenery while still savoring the tail end of summer’s heat. As daylight fades, the crispness of autumn becomes palpable, making October a uniquely enjoyable month in Pasadena.
In Pasadena, October presents a transition from the dry summer months to the slightly wetter autumn season. While the total precipitation amount for October is a modest 9 mm (0.4 in), it reflects a significant increase from the arid summer months, where rainfall was almost negligible. The one day of rain this month marks a brief but welcome respite, hinting at the forthcoming rainy season. This trend of low precipitation continues to underline Pasadena's generally dry climate, with October establishing a soft lead-in to the heavier rains expected in November and December. As the year progresses, residents can anticipate a shift away from the summer's drought-like conditions, highlighting the seasonal rhythm of this Southern California locale.
In October, Pasadena experiences a pleasant shift in humidity levels, with humidity at 59%. This marks a notable increase from the drier summer months, where July and August recorded their lowest figures at 46% and 39%, respectively. As the fall season sets in, the air becomes a bit more humid compared to the preceding months, yet it still remains moderate, particularly when juxtaposed against the higher levels seen in the winter and early spring. The transition reflects a gradual return to the wetter patterns typical of the year’s end, contrasting sharply with the dry heat of summer and illustrating Pasadena's diverse climatic tapestry throughout the year.
As October rolls in, Pasadena experiences a UV Index of 7, categorizing the sun's rays as high and suggesting a burn time of 25 minutes without protection. This month's index reflects a noticeable decline from the extreme levels noted during the summer months, where the UV Index peaked at 12 in July. However, it's a reminder that sun safety remains crucial, even as autumn begins. Compared to the prevailing moderate levels earlier in the year, October's UV exposure calls for awareness and caution, especially during midday hours. For detailed insights into how you can protect yourself from harmful UV exposure throughout the year, visit Pasadena UV Index.
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As October descends upon Pasadena, residents and visitors alike can revel in a delightful blend of warmth and sunshine, with the city basking in 292 hours of golden rays. This month captures a transition, nestled between the peak summer brilliance of 381 hours in July and the mellow fall charms of November, which dips to 255 hours. October's daylight hours reflect a subtle decline, yet they still offer ample opportunity to enjoy outdoor festivals and scenic strolls. Following the sun-drenched months of late spring and summer, the change in atmosphere invites a gentler warmth, making this month a perfect moment to celebrate the seasonal shift while soaking up the brilliant Southern California sun.
As the seasons shift into October, Pasadena enjoys a promising likelihood of sunny weather, boasting a 73% chance of sunshine. This marks a slight dip from September's peak of 85%, yet still aligns with the overall trend of favorable weather in the months leading up to fall. The warmth of late summer lingers, creating an inviting atmosphere as the heat begins to mellow. With October's sunshine probability sitting comfortably above many winter months, residents and visitors alike can cherish crisp, sunny days, perfect for outdoor activities amid the beautiful Southern California landscape.
As the crisp autumn air settles in Pasadena during October, daylight begins to wane, providing around 11 hours of sunlight. This month marks a subtle transition, following the peak summer months of June and July, which bask in an abundance of 14 hours of daylight each. After a gradual increase from 10 hours in the heart of winter, the daylight duration peaks in June before gently descending throughout the fall. The shift in October reflects nature's rhythm, as the lush greenery prepares for winter’s slumber, reminding us to savor each golden hour before the days continue to shorten.
As October arrives in Pasadena, the winds take on a refreshing quality with an average speed of 2.0 m/s (4 mph), marking a gentle shift from the quieter summer months. Throughout the year, the wind speed has shown a slight downward trend from January's breezy 2.4 m/s (5 mph), gradually tapering off to its lowest point in the warmer months of May through September, where it hovered around 1.7 to 1.9 m/s (4 mph). However, with the onset of fall, October experiences a subtle uptick, mirroring the slight increase seen in both November and December. This return to a more invigorating breeze not only signifies the changing season but also invites residents to enjoy the crisp autumn air in a city renowned for its picturesque landscapes and vibrant culture.
The weather in Pasadena changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of October's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Pasadena and find detailed weather information for every month.
In October, the weather is warm with temperatures ranging from a minimum of 6°C (44°F) to a maximum of 38°C (101°F), averaging around 20°C (68°F). It's generally dry, with only 9 mm (0.4 in) of precipitation over just one day and a humidity level of 59%. Conversely, January brings cooler temperatures, with a minimum of 0°C (32°F) and a maximum of 29°C (84°F), averaging at 12°C (53°F). This month experiences significantly more rain, totaling 75 mm (3.0 in) over five days, and the humidity increases to 78%. For more details, you can check Pasadena weather in January.
October and February present contrasting weather patterns. In October, temperatures range from a minimum of 6°C (44°F) to a maximum of 38°C (101°F), with a comfortable average of 20°C (68°F) and minimal precipitation at just 9 mm (0.4 in) over 1 day. This month typically features moderate humidity levels at 59%. In sharp contrast, February experiences cooler temperatures, ranging from a chilly 0°C (31°F) to a warmer maximum of 28°C (83°F), with an average of 12°C (54°F). Additionally, February sees significantly more rainfall, totaling 65 mm (2.6 in) spread over 6 days and higher humidity at 82%. For specific weather details, you can check Pasadena weather in February.
When comparing the weather in October and March, a distinct difference in temperature and precipitation is evident. October boasts a milder climate with average temperatures around 20°C (68°F), consistently warm days reaching up to 38°C (101°F), and minimal precipitation of just 9 mm (0.4 in) over a single day, leading to lower humidity at 59%. In contrast, March sees cooler temperatures, with an average of 13°C (56°F) and maximums of 30°C (86°F). It also experiences significantly higher precipitation, totaling 85 mm (3.4 in) across about 10 days and a higher humidity level of 75%. For more detailed insights on how March conditions manifest in Pasadena, you can refer to Pasadena weather in March.
In comparing the weather of October and April, October tends to be warmer, with an average temperature of 20°C (68°F) and a maximum of up to 38°C (101°F). In contrast, April has a slightly cooler average of 17°C (62°F), with a maximum temperature reaching 34°C (94°F). Additionally, October experiences less precipitation at 9 mm (0.4 in) over just one day, while April sees more rainfall at 22 mm (0.9 in) spread over two days. The humidity is also higher in April at 68%, compared to October's 59%. For a detailed look at the weather specifics for April, you can visit Pasadena weather in April.
In October, the weather features a broader temperature range, with a minimum of 6°C (44°F) and a high that can reach up to 38°C (101°F), averaging around 20°C (68°F). The month is relatively dry, with only 9 mm (0.4 in) of precipitation over about 1 day and a humidity level of 59%. In contrast, May is slightly cooler, with average temperatures peaking at 34°C (94°F) and averaging 18°C (64°F), while maintaining the same minimum of 6°C (43°F). This month tends to be wetter, with 16 mm (0.6 in) of rainfall over 3 days and a lower humidity level at 57%. For a more detailed look at the weather patterns, you can check Pasadena weather in May.
October presents a more moderate climate compared to June, with average temperatures peaking at 20°C (68°F) and ranging from a cooler minimum of 6°C (44°F) to a maximum of 38°C (101°F). In contrast, June enjoys slightly higher averages of 22°C (71°F) and minimum temperatures of 11°C (51°F), reaching up to 40°C (105°F) at its hottest. While October sees a bit of rainfall, measuring 9 mm (0.4 in) over one day, June remains notably drier, with only 1 mm (0.1 in) of precipitation and no rainy days. Additionally, October's humidity is at 59%, compared to June's lower 52%, making October feel a bit more comfortable despite its occasional warmth. For a detailed look at June weather, you can refer to Pasadena weather in June.
In October, temperatures showcase a broader range, with minimums dropping to about 6°C (44°F) and highs reaching up to 38°C (101°F), averaging around 20°C (68°F). Precipitation remains low at 9 mm (0.4 in) over just one day, while humidity levels sit at a comfortable 59%. In contrast, July is warmer overall, with temperatures ranging from a minimum of 13°C (57°F) to a maximum of 43°C (109°F), averaging 25°C (77°F). July also experiences even less rainfall, with only 2 mm (0.1 in) and no rainy days, accompanied by lower humidity levels at 46%. For a closer look at the weather specifics in July, you can check out Pasadena weather in July.
In comparing the weather between October and August, October tends to be cooler with a minimum temperature of 6°C (44°F) and an average of 20°C (68°F), while August is notably warmer, boasting a minimum temperature of 15°C (59°F) and an average of 25°C (78°F). Both months experience limited precipitation, with October receiving 9 mm (0.4 in) on just one day, compared to August’s minimal 2 mm (0.1 in) with no rainy days at all. Additionally, humidity levels are higher in October at 59%, whereas August features a lower humidity of 39%, contributing to a drier feel during the summer month. For a deeper dive into the specifics of August weather, you can explore Pasadena weather in August.
September's weather in Pasadena tends to be warmer, with average temperatures peaking at 23°C (74°F) and maximums reaching as high as 44°C (112°F). There's little to no precipitation observed during the month, as evidenced by the 4 mm (0.1 in) recorded over no rainy days. In contrast, October sees slightly cooler temperatures, with averages dropping to 20°C (68°F) and a maximum of 38°C (101°F). While October experiences a bit more precipitation at 9 mm (0.4 in) over a single day, the humidity also rises to 59%, making it feel a little more muggy than September's 48% humidity level. For more detailed information, you can check Pasadena weather in September.
October offers a warm climate with average temperatures around 20°C (68°F) and a maximum of 38°C (101°F), while November sees a drop in temperatures, averaging 16°C (61°F) and peaking at 31°C (89°F). Precipitation increases significantly in November, with 24 mm (0.9 in) over 2 days, compared to just 9 mm (0.4 in) in October. Additionally, humidity rises from 59% in October to 72% in November, contributing to a noticeable change in the air quality. For more detailed information, you can visit Pasadena weather in November.
October and December present quite a contrast in weather patterns. In October, temperatures range from a minimum of 6°C (44°F) to a maximum of 38°C (101°F), with an average of 20°C (68°F), and only 9 mm (0.4 in) of precipitation over just one day. The humidity is relatively moderate at 59%. In stark contrast, December experiences cooler temperatures with a minimum of 1°C (33°F) and an average temperature of 12°C (53°F), peaking at 27°C (81°F). This month sees significantly more rainfall, with 77 mm (3.1 in) over five days and higher humidity at 76%. For more detailed information, you can check Pasadena weather in December.
As October rolls into Pasadena, the weather showcases a delightful transition from the intense summer heat to a milder and more comfortable climate. With an average temperature around 20°C (68°F), this month offers a perfect blend of warm days and cooler nights. Unlike the sweltering peak summer temperatures, which can soar to a maximum of 38°C (101°F), October enjoys refreshing conditions with significantly lower humidity levels at 59%. The month also sees minimal rainfall, with just a single day of light precipitation. This change heralds the arrival of fall, making it an ideal time for outdoor activities and exploring the vibrant surroundings of Pasadena. For more insights into the region's climate, check out Pasadena Climate.