September Weather in Helen, United States

Last updated: February 24, 2025

September in Helen, United States, offers a blend of warm days and cool nights, with maximum temperatures reaching up to 32°C (89°F) and an average of 21°C (70°F). As summer transitions to fall, the crisp mornings are marked by a minimum temperature of 7°C (46°F). This month also experiences a substantial precipitation amount of 136 mm (5.3 in) over approximately 12 days, contributing to the region's lush scenery. With humidity levels hovering around 76%, visitors can expect an enchanting yet slightly muggy atmosphere that enhances the vibrant autumn colors.

September Temperature in Helen

In September, temperatures in Helen, United States, begin to hint at the crispness of autumn, showcasing a range that balances warmth and coolness. With a minimum of 7°C (46°F) and an average rising to a pleasant 21°C (70°F), the month maintains a comfortable touch, while the maximum can reach up to 32°C (89°F)—a warm reminder of summer’s lingering presence. The gradual decline follows the hotter months of July and August, where temperatures peak, creating a transition that invites outdoor activities amidst the scenic beauty of fall. This shift not only reflects the onset of sweater weather but also heralds a vibrant tapestry of foliage that captivates both locals and visitors alike.

September Weather in Helen: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Helen, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec414651586671747370614844
Data source: Temperature data for Helen generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Helen

In September, Helen, United States experiences a moderate level of precipitation, averaging 136 mm (5.3 inches) over approximately 12 days. This amount continues a trend of relatively balanced moisture that characterizes the late summer and early autumn months, with September slightly lower than the peaks seen in August. As the region transitions into fall, the precipitation levels begin to taper off compared to the heavy rain in the preceding months, setting the stage for a drier October ahead. This gentle decline in rainfall not only affects the landscape but also creates an inviting atmosphere, perfectly showcasing the beautiful shifts in foliage as the seasons change.

September Precipitation Trends in Helen

The chart displays monthly precipitation patterns in Helen, with values for each month alongside September's data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September's conditions compare to those of other months.
JanFebMarAprMayJunJulAugSepOctNovDec12919514814913914013215513618897158
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Helen

In Helen, United States, September marks a notable shift in humidity levels, as the month opens with a comfortable 76%—a dip that mirrors the lower humidity experienced in August. This decrease continues a trend observed since the peak summer months, where humidity levels hovered around 83-85% from June to July. As the season transitions into the crispness of fall, it gives residents and visitors alike a refreshing reprieve from the higher humidity of spring and early summer, while also hinting at the increase expected in the colder months, where humidity spikes to 88% in November and December. This pattern reflects a cyclical rhythm of weather that characterizes the region, offering a unique blend of seasonal experiences.

September Average Humidity in Helen

This chart illustrates the average monthly humidity levels in Helen, with September's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how September's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec86%86%86%82%85%85%83%76%76%80%88%88%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Helen

As summer fades in Helen, Georgia, the UV Index in September maintains a very high level of 9, making sun protection essential. This peak is a slight drop from the extreme levels seen during the height of summer, yet it still demands caution. With a burn time of just 15 minutes, sun-seekers should remain vigilant as they enjoy the outdoors. The trend in UV exposure throughout the year shows a pronounced escalation from late winter, with indices significantly rising from a moderate 4 in January to the extreme 11 throughout the summer months before tapering slightly in fall. For more detailed information on UV exposure and safety measures in the area, check out Helen UV Index.

Maximum UV Index Levels in Helen for September

The chart shows the monthly maximum UV Index (UVI) for Helen in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec47811111111109864
Data source: Helen September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

September Sunshine in Helen

As September arrives in Helen, United States, residents and visitors alike enjoy a bounty of sunshine, with an impressive 288 hours of bright days to bask in. This month sees a slight dip from the sun-soaked peak of July, which boasts 337 hours of sunshine, yet it remains significantly brighter than the winter months, like January, which barely reaches 164 hours. The transition into fall is marked by a gradual decrease in sunlight, but September still captures the essence of summer's warmth, providing ample opportunities for outdoor activities against vibrant autumn backdrops. With its moderate temperatures and lingering daylight, September offers a delightful balance, inviting everyone to savor the last whispers of summer before the cooler months set in.

Monthly Sunshine Duration in Helen: September Highlighted

The September sunshine duration represents the total number of hours Helen experiences direct sunlight during the month of September, excluding cloudy or obstructed periods. This chart compares the sunshine duration of September with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec164h165h234h269h300h313h337h310h288h262h232h186h
Data source: Helen September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Helen During September

As summer transitions to fall in Helen, United States, September emerges as a noteworthy month for sunny weather, boasting a 49% chance of sunshine. This marks a significant uptick compared to the preceding months of July and August, which hovered around the low 30s for sunny days. Interestingly, September's climatic conditions reflect a gradual increase from the wettest spring months, such as April, which recorded a 55% likelihood of sunny skies. Moving into autumn, the trend suggests that while the sunshine may become a bit less frequent in October, the capital of the Georgia Alps still enjoys a favorable weather outlook, making September an ideal time to soak in those golden rays before the chill of winter sets in.

Percentage of Sunny Days in September in Helen

The chart illustrates the percentage of sunny days in Helen throughout the year, with September highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Helen experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec40%40%37%55%33%34%31%32%49%38%59%37%
Data source: Helen September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Helen in September

As September rolls in, Helen, United States, experiences a gentle transition in daylight duration, with the sun gracing the sky for about 12 hours each day. This decrease from the summer's peak of 14 hours in both June and July marks the beginning of autumn, where daylight gradually wanes. Following September, the days will continue to shorten, dipping to 11 hours in October and further down to 10 hours in November. This rhythmic ebb and flow of daylight not only heralds the changing seasons but also encourages residents and visitors alike to savor the warm hues of early fall before the shorter days settle in for winter.

Average Daylight Hours in Helen for September

The chart illustrates the variation in daylight duration in Helen throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec10h 7m10h 56m11h 59m13h 4m13h 58m14h 25m14h 11m13h 22m12h 20m11h 15m10h 19m9h 51m
Data source: Helen daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Helen

As autumn begins to breathe life into Helen, Georgia, September experiences a gentle revival of wind after the summer's stillness. With an average wind speed of 2.0 m/s (5 mph), this month marks a shift from the lowest speeds recorded in July and August. The subtle increase hints at the anticipation of cooler days ahead, as the winds whisper through the turning leaves. Following a trend of declining wind speeds during the hotter months, September sets the stage for October’s slightly brisker 2.2 m/s (5 mph) average, guiding the community into a refreshing fall atmosphere. Overall, the transitional winds of September add a delightful touch to the charming ambiance of this picturesque town.

Average September Wind Speed in Helen

The chart displays monthly wind speed patterns in Helen, with values for each month shown alongside September's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how September's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec2.72.82.82.82.42.11.61.62.0 m/s2.22.52.4
Data source: Helen September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Helen Compares to Other Months

The weather in Helen 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 Helen and find detailed weather information for every month.

September and January present contrasting weather patterns. In September, temperatures range from a mild 7°C (46°F) at night to a warm 32°C (89°F) during the day, with an average around 21°C (70°F). The month typically sees about 136 mm (5.3 in) of rainfall over 12 days and a humidity level of 76%. In stark contrast, January experiences much colder temperatures, ranging from a chilly -14°C (8°F) at night to a maximum of 21°C (71°F) during the day, averaging just 5°C (41°F). Despite receiving slightly less precipitation at 129 mm (5.1 in) over 10 days, January's humidity is higher at 86%. For more details, you can visit Helen weather in January.

September and February present contrasting weather patterns. In September, temperatures range from a mild 7°C (46°F) to a warm max of 32°C (89°F), with an average of 21°C (70°F) and relatively high humidity at 76%. Although the month sees some rainfall, with 136 mm (5.3 in) over 12 days, it generally remains a more summery time. In contrast, February is marked by colder temperatures, dipping as low as -5°C (23°F) and averaging only 8°C (46°F), with a much cooler maximum of 23°C (74°F). February experiences increased precipitation at 195 mm (7.7 in) over 15 days and higher humidity levels at 86%. To learn more about the specific weather in Helen during February, visit Helen weather in February.

In comparing the weather of September and March, we see notable contrasts in temperature, precipitation, and humidity. September enjoys warmer temperatures, ranging from a minimum of 7°C (46°F) to a comfortable average of 21°C (70°F), peaking at a maximum of 32°C (89°F). In contrast, March is chillier, with temperatures dipping as low as -6°C (22°F) and averaging 11°C (51°F). Precipitation levels are slightly higher in March, totaling 148 mm (5.8 in) over 15 days, compared to September's 136 mm (5.3 in) over 12 days. Additionally, March has a higher humidity level of 86%, compared to September's 76%. For an in-depth look at the weather specifics, visit Helen weather in March.

September and April exhibit contrasting weather patterns. September brings warmer temperatures, with lows around 7°C (46°F) and highs reaching up to 32°C (89°F), while April experiences cooler conditions, starting with minimums hitting -2°C (28°F) and maximums of 27°C (82°F). Precipitation levels in April are slightly higher, averaging 149 mm (5.9 in) over 10 days compared to September's 136 mm (5.3 in) over 12 days. Additionally, April tends to have higher humidity at 82%, compared to September's 76%. For more detailed information about weather conditions, you can check Helen weather in April.

When comparing the weather in September and May, there are notable similarities and differences. September tends to be warmer overall, with average temperatures around 21°C (70°F) and a maximum of 32°C (89°F), while May has slightly cooler averages at 19°C (66°F) and peaks at 31°C (88°F). Both months experience similar levels of precipitation, with September receiving 136 mm (5.3 in) and May slightly more at 139 mm (5.5 in), each typically having rainfall on 12 days. However, humidity levels are higher in May at 85%, compared to 76% in September. For more specific insights, you can check the detailed weather patterns at Helen weather in May.

September and June have similar average temperatures, with September averaging around 21°C (70°F) and June slightly warmer at 22°C (71°F). However, September experiences a wider temperature range, with minimums dropping to 7°C (46°F) and maximums reaching up to 32°C (89°F). In contrast, June's temperatures are less variable, with minimums at 11°C (53°F) and maximums peaking at 31°C (87°F).

In terms of precipitation, both months see significant rainfall, but June is wetter with 140 mm (5.5 in) over 16 days compared to September's 136 mm (5.3 in) over 12 days. Additionally, June is more humid, boasting a humidity level of 85% compared to September's 76%. For more detailed information on the weather in June, you can check Helen weather in June.

In comparison to July, September experiences a broader range of temperatures, with minimums dropping to 7°C (46°F) and an average of 21°C (70°F), while maximums remain similar at 32°C (89°F). While July boasts higher minimum temperatures at 14°C (58°F) and a slightly warmer average of 24°C (75°F), it also experiences more frequent rain, with precipitation occurring over 19 days compared to September's 12 days. Humidity levels are a bit higher in July at 83%, compared to September's 76%, contributing to a more humid summer atmosphere. For a closer look at July's weather specifics, visit Helen weather in July.

September weather brings a noticeable shift compared to August, with lower minimum temperatures averaging at 7°C (46°F) compared to August's milder 14°C (58°F). Both months experience similar maximum temperatures, peaking at around 32°C (90°F) in August and 32°C (89°F) in September. However, September sees a reduction in rainfall, with 136 mm (5.3 in) over 12 days, compared to August's 155 mm (6.1 in) over 17 days. Despite the drop in rainfall and temperature, humidity remains consistent at 76% in both months. For a more detailed look at August weather in Helen, you can visit Helen weather in August.

September generally offers warmer temperatures, with an average of 21°C (70°F) and highs reaching up to 32°C (89°F), while October experiences a noticeable drop in minimum temperatures, hitting as low as -2°C (29°F). October’s average temperature is cooler at 16°C (61°F), but it can still reach highs of 33°C (92°F) on warmer days. In terms of precipitation, October sees a slight increase from September, with 188 mm (7.4 in) of rain over approximately 10 days, compared to September’s 136 mm (5.3 in) over 12 days. Humidity also rises slightly in October, reaching 80% compared to September's 76%. For more detailed weather information, you can visit Helen weather in October.

September and November present a stark contrast in weather conditions. September boasts warm temperatures, with an average of 21°C (70°F) and maximums reaching up to 32°C (89°F), while November cools down significantly, averaging only 9°C (49°F) and dipping to minimums of -6°C (21°F). Precipitation is more frequent in September, with 136 mm (5.3 in) over 12 days compared to November's 96 mm (3.8 in) across 9 days. Additionally, humidity levels rise in November to 88%, which is higher than September's 76%. For more detailed insights, check out Helen weather in November.

September and December present contrasting weather patterns. In September, temperatures typically range from a minimum of 7°C (46°F) to a maximum of 32°C (89°F), with an average of 21°C (70°F). The month experiences about 136 mm (5.3 in) of precipitation over 12 days, accompanied by a humidity level of 76%. In stark contrast, December sees much cooler conditions, with temperatures dropping to a minimum of -10°C (14°F) and peaking at 23°C (74°F), averaging 7°C (44°F). Precipitation increases slightly to 158 mm (6.2 in) over the same 12 days, and humidity rises to 88%. For more detailed insights into December weather, you can visit Helen weather in December.

Compare Helen's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Helen

As September rolls into Helen, the weather embraces a delightful transition that sets it apart from the hotter summer months. With a maximum temperature of 32°C (89°F), the days still carry a warm embrace, yet the average drops comfortably to 21°C (70°F), inviting cooler evenings perfect for cozy gatherings. Those looking to stay dry may need to be prepared, as the month sees about 136 mm of precipitation spread across roughly 12 days. The elevated humidity at 76% adds a touch of tropical feel, making it clear that September balances warmth and moisture in a unique way. For greater insight into the nuances of this beautiful season, check out Helen Climate.