Last updated: February 24, 2025
In October, Mount Vernon experiences a remarkable transition in weather, with maximum temperatures reaching 32°C (91°F) and an average of 18°C (64°F), while the nights can cool down to a refreshing 4°C (40°F). The month is characterized by significant precipitation, totaling 117 mm (4.6 in) across 9 days, contributing to the lush autumn foliage. With humidity levels at a notable 81%, the air is often filled with a crisp, invigorating charm that invites locals and visitors alike to enjoy the seasonal beauty. Overall, October in Mount Vernon presents a tapestry of dynamic weather that captures the essence of fall.
As October unfolds in Mount Vernon, temperatures begin to showcase a delightful shift toward cooler weather, setting the stage for the fall season. With minimum temperatures around 4°C (40°F) and an average of 18°C (64°F), the month offers a refreshing respite from the heat of summer. Daytime highs can still reach 32°C (91°F), allowing for pleasantly warm afternoons. As the month progresses, a noticeable dip in temperatures hints at the impending winter, contrasting sharply with the highs of the preceding summer months. The transition invites not just a change in wardrobe, but also in the vibrant landscape, as the foliage transforms into a breathtaking tapestry of autumn colors, making October a visually enchanting time in Mount Vernon.
October in Mount Vernon marks a significant shift in precipitation patterns, with 117 mm (4.6 inches) of rain over 9 days. This increase aligns with the trend seen throughout the late summer and early fall, where monthly precipitation tends to escalate, peaking in August at 149 mm (5.8 inches). Compared to the 100 mm (3.9 inches) recorded in September, October's rainfall suggests a noteworthy uptick, likely preparing the landscape for the drier season ahead. The consistent rainfall this month not only contributes to the region's lush autumn foliage but also sets the stage for the less frequent rain days observed in November and December. As the year progresses, these patterns highlight the transition from the wetter summer months to the cooler, more arid conditions approaching winter.
In October, Mount Vernon experiences a notable shift in humidity, averaging 81%, which marks a slight increase from the drier summer months of July and August, where humidity levels dipped to 74% and 72%, respectively. This upward trend is consistent with the transition into the fall season, as humidity levels typically rise again after the more comfortable summer months. Interestingly, October's humidity aligns closely with the readings from April, indicating a seasonal pattern where spring and autumn exhibit similar moisture levels. As the month progresses, residents can expect a refreshing atmosphere, paving the way for the more humid months of late fall, particularly November, which sees an increase to 85%.
As October rolls into Mount Vernon, the UV Index decreases to a high level of 7, signaling a shift in sun exposure trends as the year progresses. Following the peak summer months of 10, where the risk of sunburn reached its highest just 15 minutes of unprotected exposure, the cooling fall air brings a slightly more moderate burn time of 25 minutes this month. Nevertheless, caution is still warranted as UV radiation remains significant, especially after the intense rays of the late summer and early autumn. As the months transition towards winter, the UV Index is expected to gradually decline, echoing the pattern seen from previous years. For updated information on UV levels and to stay sun-safe, check out the Mount Vernon UV Index.
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As October graces Mount Vernon with its presence, the sun continues to shine brightly, contributing 260 hours of daylight. This marks a subtle decline from the sun-soaked days of summer, where July recorded a peak of 366 hours. The transition into autumn is unmistakable, as the daylight hours gradually dwindle from September's 294 hours. Despite this decrease, October maintains a vibrant atmosphere, offering ample opportunity to relish the crisp fall air and the stunning foliage. As the days shorten, the changing light casts a warm glow over the landscape, reminding us that while the summer days may be behind us, the beauty of the decreasing sunlight offers its own unique charm.
In Mount Vernon, October offers a moderate 45% chance of sunny weather, making it a pleasant month for outdoor activities. Interestingly, this slight drop from September's 58% reflects a trend toward cooler, cloudier days as autumn progresses. While the likelihood of sunshine in October is better than several summer months, such as June and August, it also indicates a gradual transition into the more overcast months ahead, particularly in November, which holds a 57% chance of sun. As fall deepens, October stands out as a balanced time to enjoy the colorful foliage under a mix of sun and clouds.
As October rolls into Mount Vernon, the days begin to shorten, with an average daylight duration of 11 hours. This marks a subtle decline from the longer late summer days, as the area transitions from the peak sunshine of 14 hours experienced during June and July. While October still enjoys a decent amount of daylight, it's a gentle reminder that winter is on the horizon. Following the vibrant colors of fall, the daylight hours gradually taper off, setting the stage for the cozy indoor months ahead. The rhythm of the seasons becomes palpable, inviting both reflection and appreciation for the shifting patterns of light and dark.
As October rolls into Mount Vernon, the wind begins to whisper softly, with an average speed of 3.7 m/s (8 mph), mirroring the calmness of earlier months like January and September. This trend illustrates a delightful transition; while summer's breezes tapered off in August with the lowest average speed of 2.5 m/s (6 mph), October's winds start to pick up again, hinting at a seasonal shift. Notably, the average wind speeds hover around similar marks in the late fall months, suggesting that while the vibrant colors of autumn are upon us, the breezes remain gentle yet present. It's a month where the air feels crisp but not overwhelming, perfectly encapsulating the essence of a serene fall day in the heart of the Pacific Northwest.
The weather in Mount Vernon 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 Mount Vernon and find detailed weather information for every month.
October and January display stark contrasts in weather conditions. In October, temperatures range from a mild 4°C (40°F) at night to a warm average of 18°C (64°F) during the day, peaking at a high of 32°C (91°F). However, it experiences significant rainfall, accumulating 117 mm (4.6 in) over nine days, with humidity levels at 81%. In contrast, January brings much colder temperatures, with a chilling minimum of -16°C (3°F) and an average of just 4°C (39°F), reaching a maximum of 20°C (69°F). Although January sees less precipitation at 71 mm (2.8 in) over the same number of days, it also has a slightly higher humidity of 84%. For a closer look at January weather, check out Mount Vernon weather in January.
October and February present distinctly different weather patterns. In October, temperatures can range from a cool 4°C (40°F) at night to a warm 32°C (91°F) during the day, with an average temperature of 18°C (64°F). The month sees about 117 mm (4.6 in) of precipitation, occurring over approximately 9 days, and humidity sits at a comfortable 81%. In contrast, February experiences chillier conditions, with lows dropping to -11°C (12°F) and highs reaching up to 23°C (74°F), resulting in an average temperature of only 6°C (43°F). Precipitation is slightly lower, totaling 94 mm (3.7 in) over 11 days, and humidity remains high at 83%. For a closer look at February conditions, you can explore Mount Vernon weather in February.
October and March offer contrasting weather experiences. In October, temperatures range from a chilly 4°C (40°F) at night to a warm 32°C (91°F) during the day, with an average of 18°C (64°F). Rainfall is relatively high, with 117 mm (4.6 in) across 9 days, and humidity levels hover around 81%. In contrast, March presents a colder climate, with minimum temperatures dipping to -6°C (22°F) and maximums reaching 28°C (83°F), averaging at 9°C (48°F). While March experiences slightly less precipitation at 91 mm (3.6 in) over 10 days, humidity remains comparable at 83%. For more detailed insights into March conditions, you can visit Mount Vernon weather in March.
When comparing the weather in October and April, one can observe distinct differences. October typically features a wider temperature range, with minimums around 4°C (40°F) and maximums reaching up to 32°C (91°F), resulting in an average temperature of 18°C (64°F). In contrast, April has a lower overall temperature, with minimums dropping to 0°C (32°F) and a maximum of 30°C (87°F), leading to an average of 14°C (58°F). Precipitation in October is higher at 117 mm (4.6 in) over 9 days, while April sees a total of 88 mm (3.5 in) across 11 days. Both months share a similar humidity level of 81%, indicating that they both feel quite damp. For more detailed information, you can check out Mount Vernon weather in April.
October and May present a mild climate with relatively similar temperature ranges, yet they possess distinct characteristics. In October, the average temperature is slightly lower at 18°C (64°F), compared to May's 19°C (67°F), while both months share maximum temperatures peaking at 32°C (91°F). Precipitation in October is marginally higher at 117 mm (4.6 in) over about 9 days, compared to May's 104 mm (4.1 in) over 11 days, indicating that October may experience slightly more intense rainfall. Furthermore, October's humidity sits at 81%, slightly higher than May's 78%, contributing to a more humid atmosphere as the month progresses. Overall, while both months maintain similar temperature maxima, October tends to be wetter and more humid. For more detailed information, you can check Mount Vernon weather in May.
When comparing the weather in October and June, we see some notable differences. October experiences cooler temperatures with a minimum of 4°C (40°F), an average of 18°C (64°F), and a maximum of 32°C (91°F), while June tends to be warmer, with a minimum of 12°C (54°F), an average of 24°C (75°F), and a similar maximum temperature of 33°C (91°F). In terms of precipitation, October is slightly wetter with 117 mm (4.6 in) over 9 days, compared to June's 106 mm (4.2 in) over 12 days. Humidity levels are also a bit higher in October at 81%, while June's humidity is at 79%. For more detailed insights into the weather during this month, you can check out Mount Vernon weather in June.
When comparing October and July weather, October presents a wider temperature range, with minimums dropping to 4°C (40°F) and maximums reaching up to 32°C (91°F). In contrast, July features consistently warmer conditions, with minimum temperatures of 15°C (60°F) and maximums soaring to 37°C (98°F). Precipitation levels are somewhat similar, with October receiving 117 mm (4.6 in) over about 9 days and July experiencing 139 mm (5.5 in) across 13 days. Interestingly, October also has a higher humidity level at 81%, compared to July's 74%. For more details on July's weather, visit Mount Vernon weather in July.
When comparing the weather in October to that of August, we see notable differences in temperature and precipitation patterns. October features a wider range in temperatures, with a minimum of 4°C (40°F), an average of 18°C (64°F), and a maximum of 32°C (91°F). In contrast, August is consistently warmer, with minimums of 17°C (63°F), average temperatures of 26°C (79°F), and maximums reaching 35°C (95°F). Additionally, October experiences more days of precipitation, occurring on 9 days with a total of 117 mm (4.6 in), compared to August's 15 days and 149 mm (5.8 in) of rainfall. Humidity levels are also higher in October at 81%, while August sees a slightly lower humidity level of 72%. For more detailed information on August weather, you can check out Mount Vernon weather in August.
In comparing the weather of October to September, October experiences a notable drop in minimum temperatures, with lows around 4°C (40°F) compared to September's milder 11°C (51°F). The average temperature in October is also cooler at 18°C (64°F) than September's average of 23°C (74°F). Despite both months experiencing similar maximum temperatures, with October reaching up to 32°C (91°F) and September peaking at 33°C (92°F), October tends to be wetter, receiving about 117 mm (4.6 in) of rainfall over 9 days, compared to September's 100 mm (3.9 in) over 10 days. Moreover, October has a higher humidity level at 81%, compared to September's 75%. For more insights into September's weather, you can check Mount Vernon weather in September.
October generally showcases a wider range of temperatures, with minimums around 4°C (40°F) and maximums reaching up to 32°C (91°F), maintaining an average of 18°C (64°F). In contrast, November sees a notable drop, with minimum temperatures falling to -4°C (24°F) and an average of 10°C (50°F). While October experiences higher precipitation at 117 mm (4.6 in) over 9 days, November has less rainfall at 84 mm (3.3 in) across 8 days. Additionally, humidity remains relatively high in both months, increasing slightly from 81% in October to 85% in November. For a deeper look at what to expect, you can check Mount Vernon weather in November.
October and December show a stark contrast in weather conditions. In October, the temperatures range from a mild 4°C (40°F) to a warm 32°C (91°F), with an average of 18°C (64°F), making it a much warmer month overall. Additionally, October experiences considerable precipitation, with 117 mm (4.6 in) falling over 9 days, contributing to a humidity level of 81%. In comparison, December sees much cooler temperatures, with a minimum of -9°C (16°F) and a maximum of 21°C (69°F), averaging just 6°C (44°F). Although December has slightly less precipitation at 97 mm (3.8 in) over 10 days, it also has a higher humidity level of 84%. This shift from the warm, humid conditions of October to the colder, damper atmosphere of December is noteworthy. For more specific insights about December weather, you can check out Mount Vernon weather in December.
As October unfolds in Mount Vernon, residents and visitors can expect a notable shift in weather compared to the warmer summer months. With temperatures that range significantly, the days can be pleasantly mild, while the evenings often invite a cozy chill. The month is characterized by increased precipitation, with rain gracing the area about a third of the time, contributing to the lush fall scenery. The elevated humidity adds a touch of dampness in the air, making those sunny intervals all the more refreshing. This unique blend of warmth and coolness, combined with vibrant autumn colors, marks October as a truly distinct time in the yearly weather cycle. For a deeper dive into the region's climate, check out Mount Vernon Climate.