September Weather in Evergreen, United States

Last updated: February 24, 2025

September in Evergreen, United States showcases a diverse climate, where daytime temperatures can hit a maximum of 33°C (91°F), offering a warm end to summer. The average temperature settles at a comfortable 15°C (60°F), while chilly nights can dip as low as -5°C (23°F), reminding residents of the impending fall. Rainfall is moderate, with a total precipitation of 47 mm (1.9 in) over 9 days, contributing to a humidity level of 65%. This combination of warmth, cool nights, and occasional rain creates a unique atmosphere, perfect for outdoor activities and enjoying the transition of seasons.

September Temperature in Evergreen

In Evergreen, United States, September marks a delightful transition into the cooler autumn months, offering a contrast to the warmth of summer. With minimum temperatures settling at -5°C (23°F) and an average hovering around 15°C (60°F), the early hints of crispness begin to emerge. The maximum temperatures can still reach a pleasant 33°C (91°F), allowing for those lingering sunny days while warmly ushering in the seasonal shift. This month serves as a bridge, where the lingering warmth of summer gradually yields to the cool embrace of fall, creating an invigorating atmosphere filled with vibrant foliage and refreshing breezes.

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

The chart illustrates September temperature patterns in Evergreen, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec272534414962676660443629
Data source: Temperature data for Evergreen 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 Evergreen

In September, Evergreen experiences a moderate precipitation total of 47 mm (1.9 in), with rain falling over 9 days of the month. This marks a distinct decrease from the wetter months of May through July, which often see substantial rainfall, but it still exceeds the drier winter months. As the transition into fall begins, September's precipitation can be seen as a gentle tapering off, paving the way for October, which has a similar precipitation amount. The month serves as a bridge, where the lush vibrancy of summer begins to give way to the crispness of autumn, inviting residents to enjoy the changing scenery while keeping umbrellas at the ready for those occasional showers.

September Precipitation Trends in Evergreen

The chart displays monthly precipitation patterns in Evergreen, 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.
JanFebMarAprMayJunJulAugSepOctNovDec2637636714084907247492919
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Evergreen

In Evergreen, United States, September brings a noticeable shift in humidity, settling at 65%—an increase from the drier summer months but still significantly lower than the winter peaks. The trend shows a gradual decline in humidity from January’s high of 88%, reaching its lowest in July at 52%. As summer transitions to fall, humidity levels begin to rise again, indicating a return to the more moisture-laden air typical of the approaching autumn season. This dip and resurgence not only highlight the region's climatic ebb and flow but also set the stage for the cozy, crisp days of October, which sees humidity climb back to 76%.

September Average Humidity in Evergreen

This chart illustrates the average monthly humidity levels in Evergreen, 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.
JanFebMarAprMayJunJulAugSepOctNovDec88%87%81%76%67%58%52%56%65%76%82%89%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Evergreen

In September, Evergreen experiences a UV Index of 10, categorizing it as very high and indicating that sun exposure can lead to skin damage within just 15 minutes. As summer transitions to fall, the UV Index shows a slight decrease from August's peak of 11 but remains significant, necessitating precaution for outdoor activities. This month marks the beginning of a gradual decline in UV levels, continuing the trend from the extreme conditions of summer while still posing a risk for unprotected skin. For those enjoying the last days of warm weather, staying informed about the UV Index is essential. For more detailed information, visit Evergreen UV Index.

Maximum UV Index Levels in Evergreen for September

The chart shows the monthly maximum UV Index (UVI) for Evergreen 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.
JanFebMarAprMayJunJulAugSepOctNovDec469111212121110754
Data source: Evergreen 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 Evergreen

September in Evergreen, United States, shines with 310 hours of sunlight, marking a gentle descent from the summer's peak. As the days grow shorter, this month still showcases a generous amount of brightness, positioning it favorably alongside the sunnier months of June (371 hours) and July (375 hours). The transition continues from August's vibrant 352 hours, hinting at the gradual shift towards autumn. This pattern reflects a late-summer glow that nurtures the vibrant foliage before it makes way for the crisp air of October, which boasts a notable dip to 276 hours. As the seasons change, September remains a golden bridge, inviting residents and visitors to bask in its warmth before the cooler months set in.

Monthly Sunshine Duration in Evergreen: September Highlighted

The September sunshine duration represents the total number of hours Evergreen 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.
JanFebMarAprMayJunJulAugSepOctNovDec187h240h291h309h335h371h375h352h310h276h250h242h
Data source: Evergreen September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Evergreen During September

As summer transitions to fall, September in Evergreen, United States, stands out with a 68% chance of sunny weather, making it one of the sunniest months of the year. This increase follows the peak of August's 65%, illustrating a trend where late summer and early fall offer prime opportunities for outdoor activities. Notably, the chance of sunshine exceeds that of most other months, suggesting that September not only retains the warmth of summer but also presents a favorable climate for enjoying the stunning scenery of Evergreen. As the days grow shorter, the mild weather provides an ideal backdrop for exploring the great outdoors before the onset of the cooler autumn months.

Percentage of Sunny Days in September in Evergreen

The chart illustrates the percentage of sunny days in Evergreen 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 Evergreen experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec58%57%51%51%43%54%57%65%68%65%63%71%
Data source: Evergreen September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Evergreen in September

As summer wanes into September in Evergreen, United States, daylight begins to gradually retreat, offering 12 hours of daylight— a subtle shift from the longer days of summer. The month acts as a bridge, transitioning from the peak of 14 hours in June, July, and August to the less illuminated months ahead. This decline continues into October, mirroring the seasonal rhythm where vibrant autumn days give way to the crispness of fall. September also stands out as a month of balance, harmonizing the lingering warmth of summer with the encroaching chill of autumn, thus inviting a rich tapestry of colors and changing landscapes.

Average Daylight Hours in Evergreen for September

The chart illustrates the variation in daylight duration in Evergreen throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 42m10h 42m11h 58m13h 17m14h 22m14h 55m14h 37m13h 38m12h 23m11h 5m9h 57m9h 23m
Data source: Evergreen daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Evergreen

In Evergreen, United States, September ushers in a subtle shift in the breeze, with an average wind speed of 2.3 m/s (5 mph). This slight uptick from the summer months indicates a refreshing transition towards autumn, as winds begin to pick up after a series of warm, still days. The data reveals a trend of gradually increasing wind speeds as the year progresses, especially notable in the later months, where winds in November and December reach 2.9 m/s (7 mph) and 3.1 m/s (7 mph), respectively. This pattern reflects the annual cycle, where as temperatures dip, the wind dances more vigorously through the trees, heralding the change of seasons and inviting residents to enjoy the invigorating embrace of the crisp, fresh air.

Average September Wind Speed in Evergreen

The chart displays monthly wind speed patterns in Evergreen, 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.
JanFebMarAprMayJunJulAugSepOctNovDec2.82.82.52.42.22.42.32.22.3 m/s2.52.93.1
Data source: Evergreen September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Evergreen Compares to Other Months

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

September weather is marked by a wide temperature range, featuring minimums as low as -5°C (23°F) and maximums soaring up to 33°C (91°F), resulting in an average of 15°C (60°F). This month sees moderate precipitation of 47 mm (1.9 in) spread over approximately 9 days, accompanied by a humidity level of 65%. In contrast, January experiences a much colder climate, with minimum temperatures dropping to -24°C (-11°F) and an average temperature of -3°C (27°F), peaking at just 16°C (60°F). The total precipitation is lower at 26 mm (1.0 in) over about 5 days, but the humidity rises to 88%, contributing to a starkly different winter feel. For more insights into the January weather, explore Evergreen weather in January.

September and February present stark contrasts in weather conditions. In September, temperatures range from a chilly minimum of -5°C (23°F) to a warm maximum of 33°C (91°F), with an average of 15°C (60°F). The month experiences around 47 mm (1.9 in) of precipitation over about 9 days and has a moderate humidity level of 65%. In contrast, February is significantly colder, with temperatures dipping to a minimum of -27°C (-17°F) and only reaching a maximum of 21°C (69°F). The average temperature sits at a frigid -4°C (26°F), and while it receives slightly less precipitation at 37 mm (1.5 in) over approximately 8 days, the humidity is notably higher at 87%. For more insights on February weather, check out Evergreen weather in February.

September and March present contrasting weather profiles. In September, temperatures range from a chilly -5°C (23°F) at night to a warm 33°C (91°F) during the day, with an average temperature of 15°C (60°F). The month sees less precipitation, totaling 47 mm (1.9 in) over about 9 days, and a moderate humidity level of 65%. In contrast, March experiences much colder conditions, with temperatures dipping down to -21°C (-5°F) at night and peaking at 23°C (73°F) during the day, culminating in an average of just 1°C (35°F). Precipitation is slightly higher at 63 mm (2.5 in) across approximately 10 days, accompanied by a higher humidity of 81%. For more insights into the weather during this time, check out Evergreen weather in March.

In comparing the weather patterns of September and April, a distinct contrast emerges. September experiences milder temperatures, with a minimum of -5°C (23°F), an average of 15°C (60°F), and a maximum of 33°C (91°F). This month sees lower precipitation levels at 47 mm (1.9 in) over about 9 days and a humidity of 65%. In contrast, April is marked by cooler weather, featuring a minimum of -17°C (1°F), an average of 5°C (41°F), and a maximum of 23°C (73°F). While April has slightly higher precipitation at 67 mm (2.6 in) spread across 12 days, it also comes with increased humidity at 76%. For those interested in a deeper look at the weather during this month, check out Evergreen weather in April.

September and May present distinct weather patterns, with September offering a wider temperature range from a minimum of -5°C (23°F) to a maximum of 33°C (91°F) and an average temperature of 15°C (60°F). In contrast, May has cooler averages, with temperatures ranging from -8°C (19°F) to a maximum of 28°C (83°F) and an overall average of 10°C (50°F). Although September experiences less precipitation at 47 mm (1.9 in) over 9 days, May sees significantly more rain at 140 mm (5.5 in) across 17 days. Both months have similar humidity levels, with September at 65% and May slightly higher at 66%. For more specific insights into May weather, you can refer to Evergreen weather in May.

In September, the weather features a wider temperature range with minimums dipping to -5°C (23°F) and a maximum reaching 33°C (91°F), while the average temperature hovers around 15°C (60°F). The month experiences 47 mm (1.9 inches) of precipitation over 9 days at a relatively high humidity level of 65%. In contrast, June presents slightly warmer conditions, with temperatures ranging from a low of 2°C (37°F) to a high of 33°C (92°F), and an average of 17°C (62°F). However, June has significantly more rainfall, totaling 84 mm (3.3 inches) over 15 days, but with lower humidity at 58%. For more detailed insights into June's conditions, visit Evergreen weather in June.

Comparing the weather in September and July reveals some notable differences. In September, temperatures range from a minimum of -5°C (23°F) to a maximum of 33°C (91°F), with an average temperature of 15°C (60°F). In contrast, July sees warmer temperatures, with a minimum of 6°C (43°F) and an average of 19°C (67°F), peaking at the same maximum of 33°C (92°F) as September. However, July experiences significantly more precipitation, with 90 mm (3.5 in) over 18 days compared to September's 47 mm (1.9 in) over just 9 days. Additionally, humidity levels are higher in September at 65%, compared to 52% in July. For more details on July weather, check Evergreen weather in July.

In comparing the weather between August and September, it is evident that September experiences a wider temperature range, with minimums dropping to -5°C (23°F) and maximums reaching 33°C (91°F). This results in an average temperature of 15°C (60°F), which is notably lower than August's average of 19°C (66°F). Furthermore, September receives less precipitation at 47 mm (1.9 in) over 9 days, compared to August's 72 mm (2.8 in) over 16 days. Additionally, humidity levels in September are higher at 65%, while August has a more comfortable humidity level of 56%. For more detailed insights into August's climate, check out Evergreen weather in August.

September and October showcase a notable shift in weather patterns. September experiences a wider temperature range, with minimums at -5°C (23°F) and maximums reaching a warm 33°C (91°F), while averaging 15°C (60°F). In contrast, October sees a drop in average temperature to 7°C (44°F), with minimums plunging to -20°C (-4°F) and maximums cooling down to 26°C (80°F). Precipitation levels remain similar in both months, with October seeing 49 mm (1.9 in) over 9 days compared to September's 47 mm (1.9 in) across the same number of days. Additionally, humidity rises in October to 76%, up from September's 65%. For a more detailed overview of the weather during this month, you can check Evergreen weather in October.

In September, the weather is characterized by a broad temperature range, with minimums around -5°C (23°F) and maximums reaching up to 33°C (91°F), leading to an average of 15°C (60°F). The month experiences 47 mm (1.9 in) of precipitation over 9 days and maintains a humidity level of 65%. In contrast, November sees significantly colder temperatures, with a minimum of -17°C (1°F) and a much lower average of 2°C (36°F), while maximums can reach 22°C (71°F). Precipitation is reduced to 29 mm (1.2 in) over just 5 days, but humidity rises to 82%. For more details on November weather patterns, you can refer to Evergreen weather in November.

September and December present starkly different weather conditions. In September, temperatures range from a chilly -5°C (23°F) at night to a warm 33°C (91°F) during the day, with an average of 15°C (60°F). The month also sees around 47 mm (1.9 in) of precipitation over approximately 9 days, coupled with a humidity of 65%. In contrast, December experiences much colder temperatures, with nighttime lows dropping to -20°C (-3°F) and daytime highs reaching up to 19°C (67°F), averaging -2°C (30°F). This month has lighter precipitation, totaling 19 mm (0.7 in) over about 5 days, but significantly higher humidity at 89%. For those interested in experiencing the specific weather conditions during this month, more details can be found in the link: Evergreen weather in December.

Compare Evergreen's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Evergreen

September in Evergreen is a remarkable transition month, where the warm days of summer gracefully yield to the crispness of autumn. Unlike the sweltering heat of July and August, temperatures peak at a still pleasant 33°C (91°F) but average much cooler at 15°C (60°F), providing a refreshing change. With a moderate 47 mm of rainfall spread across about nine days, this month is notably wetter compared to the preceding dry summer months, ushering in a lush vibrancy as nature begins to prepare for the colder season. The 65% humidity adds a touch of mugginess, yet the overall atmosphere remains invigorating, setting September apart as a time of beautiful transformation. Discover more about the captivating climate of this region at Evergreen Climate.