Last updated: February 24, 2025
In September, Williamsburg, Virginia experiences a dynamic transition into fall, with temperatures ranging from a minimum of 11°C (52°F) to a sweltering maximum of 34°C (93°F). The average temperature hovers around a comfortable 23°C (74°F), making it an ideal time for outdoor activities. However, with 115 mm (4.5 in) of precipitation spread over 10 days, the month can be quite wet, contributing to a humidity level of 78%. This combination of warmth and moisture creates a lush environment, perfect for exploring the historic charm and natural beauty of the area.
In September, Williamsburg experiences a delightful transition towards autumn, characterized by moderate temperatures that invite outdoor explorations. The month starts with a minimum temperature of 11°C (52°F), rising to an average of 23°C (74°F), and peaking at a comfortable 34°C (93°F). This warmth marks a noticeable drop from the sweltering heat of summer, yet it still offers plenty of sun-kissed days. As the month progresses, residents and visitors can relish in the mild evenings, perfect for enjoying seasonal activities and the vibrant hues of early fall. This blend of warmth and cool breezes creates an ideal atmosphere for both relaxation and adventure in Williamsburg.
In September, Williamsburg experiences a moderate precipitation level, averaging 115 mm (4.5 in) over approximately 10 days of rain. This marks a slight drop from the heavy downpours of August, which saw 160 mm (6.3 in) across 15 days. As summer transitions into fall, September's rain contributes to the lushness of the landscape, yet it also signals the onset of drier months ahead, as reflected in the decreases noted in October and November. This month serves as a balance between the peak summer precipitation and the approaching autumn, illustrating a gradual shift in weather patterns.
In September, Williamsburg experiences a notable drop in humidity, with levels at 78%—the lowest point of the year. This decrease marks a transition from the summer months, where humidity remained relatively stable at 81% throughout July and August. As the warm summer days give way to the crispness of fall, the city’s air becomes drier, creating a refreshing change that many residents and visitors relish. This shift not only enhances comfort but also signals the approach of autumn, which brings a slow increase in humidity as October arrives at 80% and November climbs back to 84%. The overall trend clearly illustrates Williamsburg's seasonal journey through varying humidity levels, reflecting the area's diverse climate throughout the year.
As September rolls into Williamsburg, the UV Index reflects a notable trend seen throughout the warmer months, settling at a robust 9, categorized as very high. This signifies that while the intense summer sun begins to wane, it's still vital for residents and visitors alike to remain cautious during peak hours, as unprotected skin can burn in just 15 minutes. September's values, following a summer peak of 11 in July, highlight the importance of sun safety even as fall approaches. With this sustained UV exposure, it's advisable to stay informed about local UV conditions by checking the Williamsburg UV Index regularly, ensuring prime protection while enjoying the transition of seasons.
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As September unfolds in Williamsburg, the sun continues to shine brightly, contributing 290 hours of sunlight to the pleasant early autumn atmosphere. This month marks a gradual decline from the peak 353 hours seen in July, yet it still boasts significant daylight, adding warmth to the crisp air. Following the vibrant summer months, September's sunlight creates a perfect backdrop for transitioning into cooler days while still highlighting the area’s natural beauty. Interestingly, the trend indicates that after summer's zenith, daylight hours remain robust, ensuring the charm of the season lingers just a little longer before the clock turns towards shorter days in October. This ebb and flow of sunlight not only enhances outdoor activities but also invites residents and visitors alike to savor the idyllic landscapes as summer gracefully recedes.
In September, Williamsburg experiences a delightful 59% chance of sunny weather, marking it as one of the more promising months for sunshine compared to the preceding summer. This upward trend from earlier summer months—where sunny days ranged from 40% to 48%—juxtaposes nicely with the cooler temperatures and vibrant foliage that begin to emerge as fall approaches. Notably, September stands out not just for its sunshine potential, but also when viewed alongside the upcoming chill of October, which sees a decrease to 45%. As the calendar turns, those seeking pleasant outdoor activities will find September to be an invigorating window of sunny possibilities before the more overcast months take over.
As summer gives way to autumn, September in Williamsburg brings a notable shift in daylight hours, which totals a wholesome 12 hours. This marks a gentle decline from the sunlit abundance of 14 hours experienced during the peak months of June through August. Following the vibrant summer days, September begins to usher in a more subdued light, as daylight gradually shortens, signaling the approach of fall. This transition reflects a rhythmic pattern throughout the year, where longer days in spring and summer gradually give way to the cozy, shorter days of late autumn and winter. As the seasons blend, September serves as a beautiful reminder of nature’s cyclical changes, inviting residents and visitors alike to savor the last warm days before the cooler months set in.
As summer fades and fall approaches, September in Williamsburg experiences a slight uptick in wind speed, averaging 2.9 m/s (6 mph). This gentle breeze marks a transition from the calmest months; August recorded the lowest winds at 2.2 m/s (5 mph). As temperatures cool, the wind begins to pick up again, signaling a shift in the season. Interestingly, September’s wind speeds stand in contrast to the more robust gusts of earlier months like January and March, which hover around 3.1 to 3.5 m/s (7 to 8 mph). This moderate September wind offers a refreshing embrace, hinting at the crisp air that October's 3.2 m/s (7 mph) will bring, while inviting residents and visitors alike to enjoy the beauty of Williamsburg's autumn landscapes.
The weather in Williamsburg 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 Williamsburg and find detailed weather information for every month.
September and January present stark contrasts in weather patterns. In September, temperatures range from a mild 11°C (52°F) at night to a warm maximum of 34°C (93°F) during the day, accompanied by significant precipitation of 115 mm (4.5 in) over about 10 days, with humidity around 78%. In contrast, January is much colder, with temperatures dropping significantly to a minimum of -14°C (6°F) and averaging just 5°C (41°F), while reaching a maximum of 22°C (71°F). This month experiences less precipitation, totaling 80 mm (3.1 in) over about 8 days, but has slightly higher humidity at 84%. The differences illustrate how seasonal changes can dramatically alter the climate, making each month a unique experience. For more detailed information, you can check out Williamsburg weather in January.
September and February showcase stark contrasts in weather. In September, temperatures range from a mild 11°C (52°F) to a warm 34°C (93°F), with an average of 23°C (74°F). The month experiences 115 mm (4.5 in) of precipitation over 10 days and a humidity level of 78%. In contrast, February brings much colder temperatures, with a minimum of -6°C (21°F) and an average of 7°C (46°F), peaking at 25°C (78°F). The precipitation is slightly lower at 106 mm (4.2 in) across 11 days, and humidity is somewhat higher at 83%. For a detailed look at February's weather, visit Williamsburg weather in February.
In September, the weather is typically warmer, with average temperatures around 23°C (74°F) and highs reaching up to 34°C (93°F), while March experiences cooler conditions, averaging around 10°C (50°F) with a maximum of 29°C (84°F). Additionally, September sees more rainfall, with 115 mm (4.5 in) of precipitation over 10 days, compared to March’s 86 mm (3.4 in) over 9 days. Despite the lower temperatures in March, the humidity remains fairly high at 82%, just slightly below September’s 78%. For more details on March weather, you can check out Williamsburg weather in March.
When comparing the weather in September and April, it's clear that September tends to be warmer overall. With average temperatures reaching 23°C (74°F) and maximums hitting 34°C (93°F), the month is characterized by a warm and humid climate, featuring an average humidity of 78%. In contrast, April offers cooler conditions, with an average temperature of 15°C (60°F) and a maximum of 31°C (87°F). Despite April's generally milder temperatures, it experiences a slightly lower precipitation level at 101 mm (4.0 in) over about 11 days, compared to September's 115 mm (4.5 in) spread over a similar number of rainy days. For more details on April weather specifics, you can visit Williamsburg weather in April.
In September, temperatures range from a pleasant minimum of 11°C (52°F) to a warmer maximum of 34°C (93°F), with an average of 23°C (74°F). The month experiences about 115 mm (4.5 in) of precipitation over 10 days, while humidity levels hover around 78%. In contrast, May sees cooler minimum temperatures of 5°C (42°F) and a slightly lower average of 20°C (68°F), although it also reaches up to 34°C (94°F). The total precipitation for May is slightly less at 106 mm (4.2 in) across 11 days, with humidity a bit higher at 80%. For more details on the weather during this month, check out Williamsburg weather in May.
In comparing the weather of September and June, both months experience warm temperatures, but September offers slightly cooler minimum and average temperatures, with averages of 23°C (74°F) and a peak of 34°C (93°F). June, on the other hand, starts with a marginally higher minimum of 12°C (54°F) and an average of 24°C (76°F), reaching up to 35°C (95°F). Precipitation levels are quite similar, with September receiving 115 mm (4.5 in) over approximately 10 days, while June totals 110 mm (4.4 in) across 12 days, yielding a comparably humid environment with 78% and 82% humidity respectively. For a more detailed overview, you can check Williamsburg weather in June.
In comparing the weather of September and July, we observe distinct differences in temperature and precipitation patterns. September generally has milder temperatures, with a minimum of 11°C (52°F) and an average of 23°C (74°F), compared to July's warmer minimum of 18°C (65°F) and an average of 27°C (81°F). The maximum temperatures in July reach up to 37°C (99°F), while September tops out at 34°C (93°F). Both months experience significant precipitation, with July receiving 124 mm (4.9 in) over 12 days and September slightly less at 115 mm (4.5 in) over 10 days. Humidity levels are fairly comparable, with July at 81% and September at 78%. For a detailed look at what to expect in July, check out Williamsburg weather in July.
In comparing the weather between August and September, September showcases a notable drop in minimum temperatures, averaging 11°C (52°F) compared to August's milder 18°C (64°F). While September maintains an average temperature of 23°C (74°F), August is warmer with an average of 26°C (79°F). Additionally, the maximum temperature in September reaches 34°C (93°F), slightly lower than August's peak of 35°C (96°F). Precipitation also decreases in September, totaling 115 mm (4.5 in) over 10 days, in contrast to August's 160 mm (6.3 in) across 15 days. Humidity remains fairly consistent, with September at 78% and August slightly higher at 81%. For more details on August weather, visit Williamsburg weather in August.
September typically boasts warmer temperatures, with minimums around 11°C (52°F) and maximums reaching up to 34°C (93°F), while October cools down considerably, featuring minimum temperatures of just 4°C (39°F) and an average of 18°C (65°F). Both months experience notable humidity levels, with September at 78% and October slightly higher at 80%. In terms of precipitation, September sees 115 mm (4.5 in) over 10 days, whereas October has a slightly lower total of 107 mm (4.2 in) across 8 days. For more details on the fall climate, you can check out Williamsburg weather in October.
September and November showcase distinct weather patterns in Williamsburg. September typically brings warmer temperatures, with an average of 23°C (74°F) and peak highs reaching 34°C (93°F). In contrast, November's temperatures are much cooler, averaging 11°C (51°F) and with highs around 27°C (81°F), making it feel significantly more brisk. Precipitation in September is higher, totaling 115 mm (4.5 in) over about 10 days, while November experiences slightly less rainfall at 76 mm (3.0 in) across 8 days. Additionally, November sees increased humidity levels at 84%, compared to September's 78%. For more detailed insights, check out Williamsburg weather in November.
September and December present contrasting weather patterns. In September, temperatures range from a minimum of 11°C (52°F) to a maximum of 34°C (93°F), with an average of 23°C (74°F). This month also sees considerable rainfall, averaging 115 mm (4.5 in) over about 10 days and a humidity level of 78%. In stark contrast, December experiences much colder temperatures, with a minimum of -7°C (19°F) and an average of 7°C (45°F). The highest temperatures reach 21°C (71°F), while precipitation decreases to 85 mm (3.3 in) over 9 days, accompanied by higher humidity of 84%. For more details about the December climate, check out Williamsburg weather in December.
As summer transitions into fall, September in Williamsburg brings a delightful shift in weather. The temperatures start to cool down, providing a refreshing break from the heat of the preceding months while still allowing for warm days. However, with an average humidity of 78%, the air can feel quite balmy, reminding you that summer's presence lingers just a little longer. Rainfall becomes more noticeable, with around 10 days of precipitation throughout the month, making it one of the wetter periods of the year. For those looking to enjoy a blend of warmth and cooler evenings, September is a unique and inviting time. To learn more about these weather patterns, visit Williamsburg Climate.