Last updated: February 24, 2025
In Bull Run, United States, September weather presents a fascinating mix of warmth and intermittent rainfall. The maximum temperature soars to a sweltering 37°C (99°F), while the average settles around 22°C (72°F), offering a comfortable reprieve for many. Nighttime brings a cool minimum of 5°C (42°F), showcasing the region's varied climate. Throughout the month, residents can expect 95 mm (3.7 in) of precipitation spread over 11 days, contributing to a humidity level of 68% that can feel quite pronounced. This blend of heat, moisture, and cooler nights makes September in Bull Run a unique and dynamic weather experience.
September in Bull Run, United States, marks a transitional period as the summer heat gradually gives way to autumn’s chill. With minimum temperatures averaging around 5°C (42°F) and peak highs reaching 37°C (99°F), this month showcases a comfortable average of 22°C (72°F). This trend indicates a drop from the sweltering summer month of August, while still maintaining warm days perfect for outdoor activities. As the season progresses, residents and visitors alike can expect refreshing evenings that perfectly contrast the remaining warmth, highlighting the beauty of the changing landscape and the onset of fall.
In September, Bull Run experiences a notable transition in its precipitation patterns, recording 95 mm (3.7 in) of rainfall over 11 days. This amount is a dip compared to the preceding month, August, which brought in a substantial 146 mm (5.7 in) across 15 days—the wettest month of the year. Following the trend, October sees a slight increase again with 108 mm (4.3 in), suggesting a shift back toward wetter conditions as autumn sets in. Overall, September strikes a balance between summer's peak rainfall and the impending fall, offering a refreshing reprieve while maintaining a robust precipitation profile.
As summer transitions into fall, September in Bull Run, United States, sees a notable shift in humidity levels. After the comfortable 59% of August, September's humidity rises to 68%, marking a gradual return to more humid conditions typical of earlier months. This trend emphasizes a seasonal pattern, where the year starts with high humidity, peaking at an impressive 86% in the colder months of January, February, and November. The drop in humidity during the summer months suggests a temporary reprieve, but as September arrives, it paves the way for the wet and cooler days ahead, reminding residents of the cyclical nature of the region's climate.
In September, Bull Run experiences a UV Index of 8, categorizing it as very high and necessitating a burn time of just 15 minutes for unprotected skin. This trend reflects a gradual decline from the peak summer months of June through August, where the UV Index consistently reached 10. As the summer transitions into fall, residents and visitors should remain vigilant, as September's UV levels still warrant protective measures for outdoor activities. Looking forward, the index will further dip in October, indicating a shift in sun intensity. For more detailed information on UV exposure in your area, check out Bull Run UV Index.
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As summer gradually surrenders to autumn, September in Bull Run remains a vibrant tapestry of sunshine, offering 271 hours of sunlight—a continuation of the warm, luminous days that characterize the peak summer months. This steady provision of sunlight reflects a trend of increasing brightness from January's crisp 150 hours to the sun-soaked highs of 350 hours in July. While the city still basks in a significant amount of light, it marks a gentle decline alongside the onset of fall, with October further reducing exposure to 242 hours. Such a transition not only paints the landscape in beautiful hues but also invites residents and visitors alike to savor the lingering warmth before the chill of winter sets in.
In Bull Run, United States, September stands out with a notable 55% chance of sunny weather, marking it as one of the more promising months for sunshine. This trend becomes particularly interesting when viewed in the context of the year: following a summer of fluctuating sun exposure—where July and August dip to 50% and 35% respectively—September reawakens the sunny days, surpassing even April’s 50%. Furthermore, as the year transitions into the fall, September's sunny outlook is a refreshing shift compared to the 39% chances seen in the preceding months of June and August. Overall, September’s consistent likelihood for sun perfectly sets the stage for enjoying the remaining warmth of the season.
As September unfolds in Bull Run, United States, the daylight hours begin to wane, offering a gentle transition from the long, sun-drenched days of summer. With 12 hours of daylight, September marks a subtle shift after the peak of 14 hours in June and July, gradually steering the region towards the brisk embrace of autumn. This month reflects a noteworthy pattern in daylight trends, where the duration steadily increases from January's 9 hours to May's 14 hours, before tapering off again as the year draws to a close. Embracing the splendor of autumn, September invites residents to enjoy those bright daylight hours before the seasonal changes fully take hold, encouraging a blend of outdoor activities and the appreciation of nature’s gradual transformation.
As summer gives way to autumn in Bull Run, September marks a subtle yet refreshing shift in the average wind speed, which sits comfortably at 2.5 m/s (6 mph). This increase from the languid breezes of August reveals a welcome transition, as the summer’s lightest winds of 1.8 m/s (4 mph) give way to invigorating gusts. It's a time when the surrounding nature begins to stir, hinting at the cooler months ahead. The wind speed in September fits a broader trend of fluctuation observed throughout the year, peaking in spring and gradually declining through the heat of summer before regaining its steadiness in early autumn. Embracing this shift, locals and visitors alike can enjoy the crisp air that heralds the onset of fall, inviting a sense of renewal and anticipation.
The weather in Bull Run 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 Bull Run and find detailed weather information for every month.
September and January present strikingly different weather patterns. September typically enjoys milder temperatures, ranging from a minimum of 5°C (42°F) to a maximum of 37°C (99°F), with an average temperature of 22°C (72°F). The month experiences about 95 mm (3.7 in) of precipitation over approximately 11 days, accompanied by a humidity level of 68%. In contrast, January features significantly colder conditions, with temperatures ranging from -15°C (5°F) at night to a daytime maximum of 21°C (70°F) and an average of just 3°C (37°F). Precipitation in January is lower at 60 mm (2.4 in) over 7 days, but the humidity rises to 86%. For more detailed information on winter weather, visit Bull Run weather in January.
September and February present contrasting weather patterns. In September, temperatures can range from a mild 5°C (42°F) at night to a sweltering 37°C (99°F) during the day, with an average of 22°C (72°F). The month sees about 95 mm (3.7 in) of precipitation over 11 days, accompanied by a humidity level of 68%. In contrast, February experiences much colder temperatures, dipping as low as -15°C (5°F), with an average of just 5°C (41°F) and a maximum of 27°C (81°F). Similar to September, February also records 95 mm (3.7 in) of precipitation, but this occurs over 12 days and with higher humidity at 86%. For more details about February in Bull Run, check out Bull Run weather in February.
September and March present quite contrasting weather patterns. In September, temperatures generally hover between a minimum of 5°C (42°F) and a maximum of 37°C (99°F), with an average of 22°C (72°F). This month experiences more warmth and a moderate amount of precipitation at 95 mm (3.7 in) over about 11 days, along with a humidity level of 68%. In contrast, March is considerably cooler, with temperatures ranging from a minimum of -7°C (20°F) to a maximum of 28°C (82°F), averaging just 8°C (47°F). Although it receives slightly less precipitation at 79 mm (3.1 in) over 9 days, the humidity is notably higher at 86%. For more specific details about weather patterns in March, you can visit Bull Run weather in March.
September and April present contrasting weather patterns. In September, temperatures range from a minimum of 5°C (42°F) to a warm average of 22°C (72°F), peaking at a high of 37°C (99°F). The month experiences an average precipitation of 95 mm (3.7 in) over 11 days, with humidity at 68%. In comparison, April's temperatures are cooler, with a minimum of -2°C (29°F) and an average of 14°C (57°F), reaching up to 34°C (93°F) at maximum. The precipitation in April slightly increases to 102 mm (4.0 in) over the same number of rainy days, but with higher humidity at 84%. This shift highlights a transition from the warmth of late summer to the crispness of early spring. For more detailed insights, check out the climate specifics at Bull Run weather in April.
In comparing the weather between September and May, September generally boasts warmer average temperatures, with a low of 5°C (42°F) and a high of 37°C (99°F), resulting in an average temperature of 22°C (72°F). In contrast, May experiences slightly cooler conditions, with a minimum temperature of 2°C (36°F) and a maximum of 35°C (95°F), leading to an average of 19°C (67°F). Precipitation levels are also notable; September sees 95 mm (3.7 in) over 11 days, while May has a bit more rainfall at 125 mm (4.9 in) across 12 days. Additionally, May is characterized by higher humidity at 78%, compared to September's 68%. For more details, you can explore Bull Run weather in May.
When comparing the weather in September to that of June, we notice several key differences. September offers a wider temperature range, with minimums dipping to 5°C (42°F) and maximums reaching 37°C (99°F), while June's temperatures are milder, starting at a minimum of 10°C (50°F) and peaking at 36°C (98°F). Additionally, both months see significant precipitation, but September features slightly less at 95 mm (3.7 in) over 11 days compared to June’s 108 mm (4.3 in) across 12 days. Furthermore, humidity levels are higher in June at 79% compared to September's 68%, contributing to a more muggy atmosphere during the earlier summer month. For a detailed look at June weather patterns, you can explore Bull Run weather in June.
In comparing the weather between September and July, we see significant differences in temperature and precipitation. September's average temperature is mild at 22°C (72°F), with a minimum of 5°C (42°F) and a maximum reaching 37°C (99°F). In contrast, July is warmer overall, boasting an average of 27°C (81°F), with minimum temperatures around 14°C (58°F) and maximums peaking at 39°C (103°F). While both months experience similar levels of precipitation, with September receiving 95 mm (3.7 in) and July slightly higher at 109 mm (4.3 in), the humidity levels remain relatively constant, at 68% for September and 70% for July. For a more detailed look at July weather, you can visit Bull Run weather in July.
When comparing the weather in September and August, September tends to be milder with a lower average minimum temperature of 5°C (42°F) compared to August's minimum of 14°C (58°F). While the average maximum temperature in August reaches up to 38°C (100°F), September sees a slightly more moderate maximum of 37°C (99°F). However, August is generally more humid, with a humidity level of 59%, whereas September's humidity rises to 68%. Precipitation is higher in August, totaling 146 mm (5.7 in) over 15 days, compared to September's 95 mm (3.7 in) over 11 days. For more details on August weather, you can check out Bull Run weather in August.
In September, the weather is characterized by warmer temperatures, with an average of 22°C (72°F) and maximums reaching up to 37°C (99°F), along with a moderate amount of precipitation at 95 mm (3.7 in) over 11 days. In contrast, October sees a significant drop in minimum temperatures, dipping to 0°C (32°F) while the average temperature decreases to 17°C (62°F). Although the maximum temperature in October remains high at 36°C (97°F), the month experiences slightly more precipitation at 108 mm (4.3 in) over just 8 days and higher humidity levels at 80%. For a more detailed look at October conditions, you can visit Bull Run weather in October.
September and November present contrasting weather patterns. In September, temperatures can range from a minimum of 5°C (42°F) to a scorching maximum of 37°C (99°F), with an average around 22°C (72°F). This month also sees a decent amount of rainfall, totaling 95 mm (3.7 inches) over approximately 11 days, accompanied by a moderate humidity level of 68%. In stark contrast, November experiences much cooler temperatures, with a minimum dipping to -5°C (23°F) and an average of only 8°C (47°F). The maximum temperature in November reaches a milder 25°C (77°F), while precipitation slightly decreases to 85 mm (3.3 inches) over just 7 days. Additionally, humidity rises significantly to 86%, adding to the chill in the air. For more detailed information, you can refer to the Bull Run weather in November.
In September, the weather tends to be much warmer, with average temperatures around 22°C (72°F) and maximum highs reaching up to 37°C (99°F). The month also experiences a significant amount of precipitation, totaling 95 mm (3.7 in) over approximately 11 days, with a humidity level of 68%. In contrast, December brings a noticeable drop in temperatures, with an average of 5°C (41°F) and minimum lows plummeting to -11°C (13°F). While December's precipitation is slightly less at 90 mm (3.6 in) over 9 days, the humidity increases to 85%, creating a much colder and damp atmosphere. For more detailed insights on December weather, you can visit Bull Run weather in December.
As summer fades in September, Bull Run experiences a notable transition in weather, characterized by a shift towards cooler temperatures and increased humidity. With highs reaching an inviting 37°C (99°F) and lows dipping to a crisp 5°C (42°F), the month offers a delightful variety as days cool off and nights become refreshing. Precipitation is prevalent, with nearly 11 days seeing light rain, contributing to an average of 95 mm (3.7 in) throughout the month, making September notably wetter than the drier summer months. This blend of warmth and moisture sets a picturesque backdrop for autumn in Bull Run, inviting outdoor activities while reminding us of nature’s shifting rhythms. Explore more about the weather in this region at Bull Run Climate.