Last updated: February 24, 2025
August in Mount Vernon, United States showcases a dynamic blend of warm temperatures and notable humidity. With a maximum temperature peaking at 37°C (99°F), the month can feel intensely hot, yet the average temperature settles around a comfortable 25°C (78°F), providing a pleasant balance. Evenings cool down to a minimum of 15°C (59°F), offering relief after sun-soaked days. However, residents should be prepared for the 15 days of rain that contribute to a total precipitation of 146 mm (5.7 in), underscoring the region's moist climate with an average humidity of 72%. Embrace this vibrant month, where fluctuating weather patterns bring both warmth and refreshing showers.
In August, Mount Vernon experiences warm and inviting temperatures, with minimums averaging 15°C (59°F) and averages reaching 25°C (78°F). The mercury can soar to a maximum of 37°C (99°F), making it one of the hottest months of the year. This pattern marks a notable transition from the cooler summer months that precede it, as July showcases similar highs, but with a slightly higher average temperature of 27°C (81°F). As summer reaches its zenith, August offers a perfect blend of warmth and comfort, ideal for outdoor activities and late summer gatherings, while hinting at the cooler temperatures that await in the upcoming months.
In August, Mount Vernon experiences its peak precipitation, accumulating 146 mm (5.7 in) of rain over 15 days. This significant increase marks a continuation of the rising trend observed since June, where rainfall began to intensify from earlier months. Notably, August’s precipitation not only surpasses the July total of 132 mm (5.2 in), but also highlights the region's shift towards its wetter season, as the summer draws to a close. With nearly half of the month experiencing rainfall, August stands out as a pivotal time for water replenishment, likely contributing to the lush landscapes that characterize the area in the following months.
In August, Mount Vernon experiences a pleasant dip in humidity, recording a comfortable 72%. This marks the lowest humidity level of the year, following the gradual decline that begins in the scorching month of July. As summer wanes, the transition to autumn becomes more pronounced, with humidity levels rising again in September to 75%. Overall, the trend reveals a refreshing drop in moisture during the peak of summer, providing residents and visitors a chance to enjoy the outdoors without the oppressive stickiness characteristic of the earlier months.
During August, Mount Vernon experiences a very high UV Index of 9, just slightly lower than the peak levels seen in the previous months. With a burn time of only 15 minutes, it’s crucial for residents and visitors alike to remain vigilant and protect their skin from harmful UV rays. This pattern highlights a trending decline from the striking UV intensity of 10 in June and July, while still necessitating caution as the summer sun persists. As we transition into September, the UV Index gradually decreases to 8, but the overall trend remains clear: late summer demands proactive sun safety measures. For more information on how to stay protected, visit Mount Vernon UV Index.
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As summer wanes in Mount Vernon, August stands out with 321 hours of glorious sunshine, continuing the trend of the sunniest months. Following a peak in July with 357 hours of sunlight, the days begin to shorten but still offer a remarkable display of summer's warmth. This month, while slightly less luminous than July, maintains a promising abundance of bright days, juxtaposed against the gradual decline seen in September with 276 hours. Overall, the sunny months from May through August create a vibrant tapestry of light, giving residents and visitors alike ample opportunities to savor summer’s final days before the cooler months set in.
In Mount Vernon, August typically experiences a 35% chance of sunny weather, marking a notable dip compared to the peak summer months of June and July, which hover around 39% and 49%, respectively. This trend continues a pattern seen throughout the year, where the likelihood of sunny days fluctuates seasonally. Interestingly, the likelihood of sunshine tends to increase again in September, when it rises to 55%, suggesting that summer isn't the only time to enjoy bright, sunny days in this region. As August rolls in, residents and visitors alike may want to prepare for a mix of weather, while anticipating a resurgence of sunshine as fall approaches.
As summer draws to a close in Mount Vernon, August offers a gentle transition in daylight duration, with approximately 13 hours of sunlight each day. This marks a slight decrease from the peak 14 hours experienced in the earlier summer months of June and July. Notably, the gradual decline in daylight begins in May, peaks during the heart of summer, and starts to recede as September approaches. This rhythm mirrors nature's cycles, signaling a shift toward shorter days and the onset of autumn. As the warmth of summer lingers, the rich tapestry of daylight continues to weave its way through the familiar seasonal dance.
In August, Mount Vernon experiences its calmest winds of the year, with an average speed of only 1.9 m/s (4 mph). This gentle breeze marks a distinct shift from the breezier months of January through July, where winds generally hover around 2.3 to 3.2 m/s. As summer wanes, the reduced wind speed reflects the transition into the more stable conditions of early autumn. Interestingly, the gentle August air contrasts sharply with the early months of the year, where consistently higher winds keep the environment lively. As the region prepares for a change in season, this serene air invites residents to enjoy the slower pace before winter approaches.
The weather in Mount Vernon changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of August'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.
In August, the weather is warm and often sweltering, with temperatures ranging from a minimum of 15°C (59°F) to a maximum of 37°C (99°F) and an average of 25°C (78°F). The month sees significant precipitation, averaging 146 mm (5.7 in) over approximately 15 days, while the humidity remains high at 72%.
In stark contrast, January presents a chilly landscape, where temperatures can drop as low as -14°C (7°F) and typically hover around an average of 3°C (38°F), peaking at 22°C (71°F). Precipitation is less frequent, averaging 61 mm (2.4 in) over just 7 days, and humidity is noticeably higher at 84%. For a more detailed look at January's weather in this region, check out Mount Vernon weather in January.
August and February present strikingly contrasting weather patterns. In August, temperatures can soar with a minimum of 15°C (59°F) and an average of 25°C (78°F), peaking at a hot 37°C (99°F). With a substantial rainfall of 146 mm (5.7 in) over about 15 days, the humidity levels are relatively high at 72%, contributing to a muggy atmosphere. In contrast, February experiences much colder temperatures, ranging from a frigid minimum of -14°C (7°F) to an average of only 5°C (42°F), with a maximum reaching 27°C (81°F). Despite lower total precipitation at 96 mm (3.8 in) over 11 days, the humidity is slightly higher at 83%, which can enhance the chill. For more details on February weather in the area, you can visit Mount Vernon weather in February.
August and March exhibit strikingly different weather patterns. In August, temperatures range from a mild 15°C (59°F) at night to a scorching 37°C (99°F) during the day, with an average temperature of 25°C (78°F). This month also experiences significant rainfall, totaling 146 mm (5.7 in) over about 15 days, contributing to a humidity level of 72%. In contrast, March brings a chillier climate, with temperatures ranging from a low of -6°C (22°F) to a maximum of 29°C (84°F) and an average of 8°C (47°F). March has less precipitation, totaling 82 mm (3.2 in) over just 9 days, and it sees slightly higher humidity at 83%. For a closer look at March weather specifics, you can check Mount Vernon weather in March.
In a comparison of weather between August and April, August typically experiences warmer temperatures with a minimum of 15°C (59°F) and an average of 25°C (78°F), reaching a maximum of 37°C (99°F). This month also sees higher precipitation, averaging 146 mm (5.7 in) over about 15 days, combined with a humidity level of 72%.
In contrast, April displays much cooler conditions, with temperatures ranging from a minimum of -1°C (31°F) to an average of 14°C (58°F) and a peak of 33°C (92°F). While April has less rain at 102 mm (4.0 in) over 11 days, the humidity is slightly higher at 81%. For more detailed insights, you can visit Mount Vernon weather in April.
In comparing the weather of August and May, August typically presents a warmer climate with average temperatures peaking at 25°C (78°F) and reaching highs of 37°C (99°F), while May sees a more moderate average of 19°C (67°F) and a maximum of 35°C (95°F). Precipitation in August is slightly higher at 146 mm (5.7 in) over 15 days, compared to May's 121 mm (4.8 in) over 12 days. Humidity levels are somewhat consistent, with August at 72% and May slightly higher at 78%. For a detailed look at the weather conditions, you can visit Mount Vernon weather in May.
In comparing the weather of August and June, notable differences emerge in temperature and precipitation. August generally experiences a warmer average temperature of 25°C (78°F), compared to June's average of 24°C (76°F). However, June has a lower minimum temperature of 9°C (49°F) versus August's 15°C (59°F). Both months feature a maximum temperature reaching up to 37°C (98°F for June and 99°F for August), indicating extremely warm afternoons. In terms of precipitation, August sees higher rainfall with 146 mm (5.7 in) over 15 days, while June receives 107 mm (4.2 in) across 13 days. Humidity levels are slightly higher in June at 79%, compared to 72% in August. For further details on June weather, you can check out Mount Vernon weather in June.
In comparing the weather between July and August, we see some notable differences. July typically features slightly warmer average temperatures, with a minimum of 16°C (61°F) and a maximum of 38°C (102°F), compared to August's range of 15°C (59°F) to 37°C (99°F). Both months experience significant humidity, with July slightly higher at 74% versus August's 72%. Precipitation is also more frequent in August, occurring over 15 days with a total of 146 mm (5.7 in), compared to July's 132 mm (5.2 in) across 12 days. For a more detailed look at July's weather, you can check Mount Vernon weather in July.
August typically boasts warmer temperatures, with averages around 25°C (78°F) and maximums peaking at 37°C (99°F), compared to September's cooler averages of 22°C (73°F) and minimums dropping to 6°C (44°F). While both months can experience high temperatures, August is characterized by significantly more precipitation, with 146 mm (5.7 in) falling over an average of 15 days, whereas September sees a reduction to 93 mm (3.7 in) across about 11 rainy days. Additionally, humidity levels remain relatively high in both months, at 72% in August and slightly higher at 75% in September, contributing to a more humid feel as summer transitions into fall. For a detailed look at September weather, check out Mount Vernon weather in September.
August and October exhibit contrasting weather patterns. August typically has warmer temperatures, with an average of 25°C (78°F) and maximums reaching up to 37°C (99°F), while October sees a cooler average of 17°C (63°F), with a minimum temperature dropping to 2°C (36°F). Precipitation is more frequent in August, occurring over 15 days with a total of 146 mm (5.7 in), compared to October's 105 mm (4.2 in) over just 9 days. Interestingly, October's humidity is slightly higher at 81%, compared to August's 72%, which can add a chill to the air as temperatures drop. For more detailed insights, check Mount Vernon weather in October.
August and November present stark contrasts in weather conditions. In August, temperatures range from a minimum of 15°C (59°F) to a scorching maximum of 37°C (99°F), with an average temperature of 25°C (78°F). This month also sees significant precipitation, totaling 146 mm (5.7 in) over about 15 days, coupled with relatively high humidity at 72%.
In comparison, November brings much cooler temperatures, with a minimum of -5°C (23°F) and an average temperature of just 9°C (48°F), while the maximum reaches 26°C (78°F). Precipitation decreases to 77 mm (3.0 in) spread over 7 days, and humidity increases to 85%. This shift in temperature and moisture highlights November's much chillier and less predictable weather compared to the hot, humid summer month of August. For more details on November weather, you can check out Mount Vernon weather in November.
In August, temperatures soar with a minimum of 15°C (59°F) and an average of 25°C (78°F), peaking at a sweltering 37°C (99°F). The month experiences significant rainfall, totaling 146 mm (5.7 in) over 15 days, with humidity levels around 72%. In contrast, December presents a stark shift in weather, where the mercury dips to a minimum of -10°C (14°F) and averages just 5°C (42°F), reaching a maximum of 20°C (69°F). With only 89 mm (3.5 in) of precipitation over 9 days and higher humidity at 84%, December's conditions are much chillier and more humid. For a closer look at the winter climate, you can visit Mount Vernon weather in December.
August in Mount Vernon stands out as a month of warmth and humidity, characterized by higher temperatures that often soar into the upper 30s°C, creating a vibrant summer atmosphere. Unlike the cooler spring and autumn months, August experiences an average temperature of around 25°C, coupled with significant humidity levels that can make the heat feel more intense. With about 15 days of rainfall, precipitation is prevalent, adding a refreshing contrast to the warmth but also emphasizing the month's tendency for volatile weather patterns. This combination of heat and moisture provides a unique backdrop for summer activities, making it quite different from the milder conditions of other months. For those curious about the overall climate and seasonal changes, detailed insights are available at Mount Vernon Climate.