Last updated: February 24, 2025
As September unfolds in Frisco, United States, the weather presents a captivating blend of cool transitions and occasional moisture. The maximum temperature tends to reach around 22°C (72°F), offering pleasant days, while the average dips to 7°C (46°F), highlighting the briskness of early autumn. Residents and visitors alike may feel the chill during the night, with minimum temperatures dropping to an invigorating -11°C (13°F). Rainfall is not uncommon, with 43 mm (1.7 in) accumulating over approximately 9 days, contributing to a relative humidity of 65% that adds a refreshing touch to the invigorating mountain air. Embrace the crisp mornings and cool evenings, as September in Frisco ushers in the season of change.
September in Frisco ushers in a refreshing transition, as temperatures begin to moderate after the height of summer. With a minimum of -11°C (13°F) and a comfortable average of 7°C (46°F), the month presents a pleasant retreat from the warmer days of August. The maximum temperature reaches 22°C (72°F), providing ample opportunity to enjoy the outdoors, whether it’s hiking in the crisp air or enjoying fall festivities. This dip marks a notable shift from the higher temperatures felt in July and August, illustrating a gradual descent into the cooler months ahead. As summer wanes, September perfectly encapsulates the beauty of the changing season, setting the stage for autumn's embrace.
In September, Frisco experiences a transition as summer wanes, with a precipitation total of 43 mm (1.7 in) over 9 days of rain. This amount reflects a slight decrease compared to the previous months, where both July and May recorded higher totals, peaking at 83 mm (3.3 in) and 81 mm (3.2 in), respectively. As the region shifts towards autumn, September's rainfall remains relatively moderate, signaling a subtle change in weather patterns while still allowing for enjoyable outdoor activities. Notably, this month often marks the beginning of a series of cooler, crisp days, complemented by the occasional shower that nurtures the landscape as it prepares for the fall foliage ahead.
As summer transitions into autumn, September in Frisco brings a noticeable increase in humidity, climbing to 65%. This rise follows a downward trend during the summer months, where humidity levels peaked at a comfortable 56% in August. Compared to the preceding months, September marks a shift towards a more humid atmosphere, reminiscent of the wetter conditions experienced earlier in the year. With January and February seeing high humidity levels of 88% and 87% respectively, September serves as a gentle reminder of the approaching seasonal changes, as humidity prepares to inch upward again into October and beyond.
As summer transitions into fall, September in Frisco, United States, continues to showcase a notably high UV Index of 11, categorizing it as extreme exposure with a burn time of just 10 minutes. This month follows a peak summer where UV levels soared, reaching a high of 14 in June before slightly tapering off. Despite being one of the last months of summer, the UV Index remains significantly elevated, emphasizing the importance of sun protection throughout September. As the weather begins to cool, it’s vital to maintain awareness of UV levels and protect your skin accordingly. For detailed insights on UV levels throughout the year, visit Frisco UV Index.
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As summer gracefully transitions into fall, September in Frisco shines with an impressive 314 hours of sunshine. This delightful month follows a peak period in July and June, where the city basked in the maximum solar embrace of 382 hours. While September's totals are somewhat diminished, they still reflect a vibrant lingering warmth as daylight begins to wane. The month signals a soft tapering off from the season's sun-kissed days—with the promise of cozy fall evenings ahead—leading to a notable drop in October, where hours dip to 280. It’s a perfect time to enjoy the outdoors while soaking up the last golden rays of the summer sun.
As summer transitions into fall, Frisco, Texas, witnesses an uptick in sunny days, with **September boasting a 65% chance of sunshine. This trend marks a significant improvement from the preceding months, particularly August, which itself has a healthy 61% chance. Conclusively, September stands out as one of the sunniest months of the year, surpassing the likelihood of sunny weather in both the earlier and later months, such as October’s 54% and July’s 48%. This pattern suggests that September is an ideal time to enjoy outdoor activities under clear, bright skies in Frisco.
As summer gives way to autumn in Frisco, September ushers in a subtle shift in daylight, offering 12 hours of sunlight—a graceful decline from the sun-drenched heights of 14 hours in the peak of summer. This month marks a transitional phase, where the extended daylight of June, July, and August begins to gently recede. Following September, daylight hours continue to diminish, leading into the shorter days of October and November, with only 9 hours of daylight by December. Overall, the trend through the year shows a predictable yet beautiful rhythm of increasing daylight in the spring and summer, followed by a gradual retreat as fall and winter approach.
In September, the wind in Frisco settles into a gentle rhythm, averaging 2.0 m/s (4 mph). This slight dip in speed reflects a trend of decreasing breeziness from the summer months, where winds hovered around 2.0 to 2.4 m/s in August and May, respectively. As the city transitions into fall, it appears that the winds are softening, a contrast to the brisk breezes often felt in the earlier months of the year. The overall pattern shows the winds tend to be calmest during the peak of summer, before gradually picking up again as autumn approaches, evident in the 2.5 m/s average heading into October. As September unfolds, residents can enjoy a serene atmosphere, perfect for leisurely walks amidst the vibrant changing leaves.
The weather in Frisco 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 Frisco and find detailed weather information for every month.
September and January present a stark contrast in weather conditions. In September, temperatures range from a minimum of -11°C (13°F) to a pleasant maximum of 22°C (72°F), accompanied by a moderate average of 7°C (46°F). The month experiences about 43 mm (1.7 in) of precipitation over 9 days, with humidity levels around 65%. In contrast, January is significantly colder, with temperatures plummeting to a minimum of -26°C (-15°F) and a maximum of only 5°C (42°F), resulting in an average temperature of -11°C (13°F). Precipitation remains similar at 41 mm (1.6 in) but occurs over 10 days, with higher humidity at 88%. For more detailed insights, you can check Frisco weather in January.
In September, the weather is generally more mild, with temperatures ranging from a minimum of -11°C (13°F) to a maximum of 22°C (72°F), resulting in an average of 7°C (46°F). This month sees about 43 mm (1.7 in) of precipitation spread across approximately 9 days, accompanied by a humidity level of 65%. In contrast, February experiences much colder conditions, with temperatures plummeting to a minimum of -28°C (-19°F) and averaging around -10°C (14°F) while peaking at just 9°C (48°F). Precipitation increases slightly to 59 mm (2.3 in) over 14 days, and humidity is notably higher at 87%. For more detailed insights, check out Frisco weather in February.
September and March present strikingly different weather patterns. In September, temperatures range from a chilly -11°C (13°F) to a pleasant 22°C (72°F), with an average of 7°C (46°F). The month experiences moderate precipitation of 43 mm (1.7 in) over about 9 days and a humidity level of 65%. In contrast, March is considerably colder, with temperatures dipping as low as -25°C (-12°F) and reaching a maximum of only 9°C (49°F), averaging -5°C (22°F). March also brings more rain, with 67 mm (2.7 in) of precipitation spread over 14 days and higher humidity at 81%. For more insights on the weather during this month, check out Frisco weather in March.
When comparing the weather in September to that in April, noticeable differences emerge in both temperature and precipitation. September boasts milder temperatures, ranging from a minimum of -11°C (13°F) to a comfortable maximum of 22°C (72°F), with an average of 7°C (46°F). In contrast, April is chillier, with temperatures fluctuating between a minimum of -21°C (-5°F) and a maximum of 10°C (50°F), leading to an average temperature of -3°C (27°F). Additionally, April experiences more precipitation, totaling 78 mm (3.1 in) over 13 days, compared to September's 43 mm (1.7 in) over 9 days. The humidity levels are also slightly higher in April at 76%, compared to September's 65%. For more detailed information on April weather, you can visit Frisco weather in April.
When comparing the weather in September and May, we see that September tends to be warmer overall. The average temperature in September is around 7°C (46°F), with a maximum of 22°C (72°F), while May offers cooler conditions, averaging 2°C (35°F) and reaching a high of only 17°C (63°F). Additionally, May experiences more precipitation, with 81 mm (3.2 in) spread over 14 days, compared to September's 43 mm (1.7 in) over 9 days. Both months have similar humidity levels, hovering around 65-66%. For those interested in the specifics of Frisco's weather patterns during May, you can check out Frisco weather in May.
In comparing the weather between September and June, we see a slight shift in temperatures and precipitation patterns. September records a minimum temperature of -11°C (13°F), while June has a slightly warmer minimum of -9°C (15°F). The average temperatures in both months are relatively close, with September averaging 7°C (46°F) and June at 8°C (46°F). However, June features a higher maximum temperature of 24°C (75°F) compared to September's maximum of 22°C (72°F).
Precipitation is somewhat consistent, with September experiencing 43 mm (1.7 in) over 9 days, while June has a bit more at 50 mm (2.0 in) across 10 days. Humidity levels also differ slightly, with September at 65% and June at 58%. For detailed insights into June weather specifics, you can explore Frisco weather in June.
When comparing the weather in September to July, we see notable differences in temperature and precipitation patterns. September typically experiences a wider temperature range, with minimums around -11°C (13°F) and maximums reaching 22°C (72°F), averaging 7°C (46°F). In contrast, July features milder temperatures, with minima of -2°C (28°F), a maximum of 23°C (74°F), and an average of 11°C (53°F). Furthermore, July tends to be wetter, recording 83 mm (3.3 in) of precipitation over 15 days, compared to September's 43 mm (1.7 in) over 9 days. Humidity levels are also higher in September at 65%, while July experiences a lower humidity of 52%. For more details, you can check Frisco weather in July.
September tends to be cooler than August, with average temperatures dropping from 11°C (52°F) in August to 7°C (46°F) in September. The maximum temperature remains similar, peaking at around 22°C (72°F) in both months, but September experiences a notable minimum temperature of -11°C (13°F). Additionally, September sees slightly less precipitation, totaling 43 mm (1.7 in) over 9 days, compared to August's 53 mm (2.1 in) over 11 days. The humidity also increases in September to 65%, compared to 56% in August, making the air feel a bit heavier as summer transitions into fall. For more detailed weather information, you can check Frisco weather in August.
In comparing the weather between September and October, it's evident that October brings a notable drop in temperatures. While September features a more moderate average of 7°C (46°F) with a maximum of 22°C (72°F), October sees much colder conditions, with an average temperature plunging to -1°C (31°F) and a minimum of -24°C (-10°F). Additionally, October experiences increased precipitation, totaling 56 mm (2.2 in) over 9 days, compared to September's 43 mm (1.7 in) over the same number of days. The humidity also rises slightly in October to 76%, up from September's 65%. For more details on how October weather unfolds, you can check out Frisco weather in October.
In September, temperatures in Frisco range from a minimum of -11°C (13°F) to a maximum of 22°C (72°F), with an average of 7°C (46°F). The month experiences around 43 mm (1.7 in) of precipitation over 9 days, along with a humidity level of 65%. In contrast, November sees significantly colder temperatures, with a minimum of -27°C (-17°F), an average of -7°C (20°F), and a maximum of just 10°C (50°F). Precipitation slightly decreases to 41 mm (1.6 in) over 8 days, but humidity rises to 82%. This stark shift highlights the transition from the milder conditions of September to the much harsher winter climate typical of November. For more details, you can check Frisco weather in November.
September and December weather present a striking contrast in terms of temperature and humidity. In September, temperatures range from a minimum of -11°C (13°F) to a maximum of 22°C (72°F), with an average of 7°C (46°F). The month experiences moderate humidity at 65% and a total precipitation of 43 mm (1.7 in) over approximately 9 days. In contrast, December plunges into much colder conditions, with a minimum temperature of -29°C (-20°F) and a maximum of 8°C (47°F), averaging -11°C (13°F). The humidity rises significantly to 89%, and precipitation remains similar at 43 mm (1.7 in) but stretches over 10 days. For more details on December weather, check Frisco weather in December.
As September unfolds in Frisco, the weather begins to shift notably from the summer warmth, offering a refreshing blend of crisp air and variable conditions. With temperatures that range from mild days to chillier nights, it heralds the transition into the fall season. Despite a fair amount of precipitation, the beautiful surroundings often shine through the clouds, painting a picturesque backdrop for outdoor adventures. Humidity levels hold steady, adding a touch of crispness to the air. Overall, September in Frisco marks a unique time where the remnants of summer meet the early whispers of winter. To learn more about the year-round climate in this wonderful location, visit Frisco Climate.