September Weather in Gardiner, United States

Last updated: February 24, 2025

In September, Gardiner, United States experiences a diverse climate that showcases both warmth and coolness. The maximum temperature reaches a pleasant 28°C (82°F), while the average dips to a brisk 9°C (48°F), and the minimum plummets to a chilly -11°C (13°F). With 58 mm (2.3 in) of precipitation spread over 8 days, the month sees a balanced mix of sun and occasional rain, resulting in a humidity level of 67%. This engaging weather pattern highlights the transition into autumn, making it a perfect time for both outdoor activities and cozy indoor retreats.

September Temperature in Gardiner

In Gardiner, United States, September marks a transitional shift as summer gracefully gives way to autumn. During this month, temperatures reveal a notable range, with minimums around -11°C (13°F), climbing to average highs of 28°C (82°F) and an overall average of 9°C (48°F). This indicates a delightful warm spell as the days begin to shorten and the leaves start their vibrant change. The weather in September remains significantly milder compared to the preceding months, making it an enjoyable time to experience the natural beauty of the region. As temperatures gradually decline, this month serves as a gentle reminder of the harsher frosts to come in October, where lows plummet to -36°C (-32°F). Overall, September in Gardiner stands out for its pleasant warmth, bridging the gap between the heat of summer and the chill of winter.

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

The chart illustrates September temperature patterns in Gardiner, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec151525303750595748302114
Data source: Temperature data for Gardiner generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Gardiner

September in Gardiner marks a shift with 58 mm (2.3 in) of precipitation over 8 days, reflecting a light but consistent rainfall as summer transitions into autumn. This amount is slightly above the drier July and August, which recorded only 38 mm (1.5 in) and 46 mm (1.8 in) respectively, suggesting a gradual increase in moisture levels. As the leaves start to change and the temperatures begin to cool, the rainfall in September serves as a gentle reminder of the upcoming seasonal shifts, while still maintaining relatively fewer precipitation days than the earlier months of the year. Overall, September sets the stage for October’s expected increase in rain, continuing the trend of revitalizing the landscape in preparation for the winter months ahead.

September Precipitation Trends in Gardiner

The chart displays monthly precipitation patterns in Gardiner, 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.
JanFebMarAprMayJunJulAugSepOctNovDec479064837088384658686253
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Gardiner

As summer fades into autumn in Gardiner, United States, September brings about a noticeable shift in humidity, dropping to 67%. This decrease marks the culmination of a steady decline from the peak humidity of 93% in January, gradually decreasing to 69% in August. The transition to fall is characterized by drier air, making September feel more comfortable as compared to the sweltering summer months. This trend of lower humidity continues slightly into October, before higher levels return in November, reflecting a typical seasonal pattern. Residents can enjoy the crispness of September, signaling the approach of a more invigorating climate ahead.

September Average Humidity in Gardiner

This chart illustrates the average monthly humidity levels in Gardiner, 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.
JanFebMarAprMayJunJulAugSepOctNovDec93%92%90%83%79%76%74%69%67%72%89%94%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Gardiner

As September arrives in Gardiner, the UV Index remains prominently high, registering at 8 with a corresponding exposure category of very high. This trend follows the summer months, where UV levels peaked at an extreme 11 in both June and July, and 10 in August. While September provides a slight reprieve compared to the peak summer values, sun seekers should still take precautions, as the burn time lingers around 15 minutes for fair-skinned individuals. The downward shift in indices in the coming months signifies a transition towards more moderate conditions, yet vigilance is still key. For more details on UV exposure and safety, check out Gardiner UV Index.

Maximum UV Index Levels in Gardiner for September

The chart shows the monthly maximum UV Index (UVI) for Gardiner 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.
JanFebMarAprMayJunJulAugSepOctNovDec3479111211108642
Data source: Gardiner 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 Gardiner

As September unfolds in Gardiner, the sunlight gently begins to wane, offering 284 hours of glorious daytime to savor. This marks a notable shift from the sun-drenched heights of summer, where July peaks at an impressive 391 hours. The gradual decline in daylight signals the change of seasons, as autumn sets in and nature adorns itself with vibrant hues. Interestingly, after a steady increase from January's 140 hours to the summer zenith, September's sunlight still generously outshines the earlier months, making it a perfect time for outdoor adventures before the cooler October days, which bring just 244 hours of light. This rhythmic pattern of daylight hours illustrates Gardiner's transition from the exuberance of summer to the cozy embrace of fall, ensuring every moment can be cherished under the changing skies.

Monthly Sunshine Duration in Gardiner: September Highlighted

The September sunshine duration represents the total number of hours Gardiner 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.
JanFebMarAprMayJunJulAugSepOctNovDec140h173h267h270h319h359h391h348h284h244h193h176h
Data source: Gardiner September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Gardiner During September

As September arrives in Gardiner, the likelihood of sunny weather significantly increases, boasting a remarkable 72% chance of sunshine. This trend reflects a vibrant transition from the summer months, where July and August also enjoyed considerable sun, at 61% and 55%, respectively. The upward trajectory in sunny days reaches its peak this month, indicating that as the warmth of summer lingers, residents and visitors alike can expect an abundance of clear skies. Following September, however, the chance of sunshine diminishes as the cooler months set in, with October dropping to 39%. Thus, September stands out as a stellar time for outdoor activities and enjoying the beautiful fall scenery before the weather shifts.

Percentage of Sunny Days in September in Gardiner

The chart illustrates the percentage of sunny days in Gardiner 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 Gardiner experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec27%26%46%45%40%72%61%55%72%39%27%16%
Data source: Gardiner September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Gardiner in September

As summer fades into autumn, September in Gardiner, United States, marks a transitional month with about 12 hours of daylight. After basking in the extended 15-hour days of June and July, the gradual decrease begins, continuing the trend set by August's 13 hours. This subtle shift reflects nature's rhythm, as the days grow shorter, inviting cooler temperatures and the vibrant hues of fall. Despite the reduction in daylight, September still offers a generous amount, allowing locals and visitors alike to savor the lingering warmth and beauty before the approach of winter's shorter days.

Average Daylight Hours in Gardiner for September

The chart illustrates the variation in daylight duration in Gardiner throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 12m10h 25m11h 57m13h 32m14h 52m15h 32m15h 10m13h 58m12h 27m10h 53m9h 31m8h 48m
Data source: Gardiner daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Gardiner

In Gardiner, the month of September showcases a gentle breath of air, with an average wind speed of 2.3 m/s (5 mph). This slight easing signifies a transition into the cooler autumn months, contrasting with the summer's peak calmness when July recorded its lowest average of 1.8 m/s (4 mph). As the seasons shift, September’s winds remind us of nature's rhythm, preparing for a gradual increase in speed towards the end of the year, where November’s gusts reach 2.7 m/s (6 mph) and December escalates further to 3.2 m/s (7 mph). This trend not only highlights the seasonal changes but also enhances the charm of Gardiner's landscape, inviting residents and visitors to embrace the crispness of fall.

Average September Wind Speed in Gardiner

The chart displays monthly wind speed patterns in Gardiner, 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.
JanFebMarAprMayJunJulAugSepOctNovDec2.42.52.42.42.12.51.82.22.3 m/s2.42.73.2
Data source: Gardiner September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Gardiner Compares to Other Months

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

September and January exhibit striking contrasts in weather conditions. In September, temperatures range from a chilly minimum of -11°C (13°F) to a pleasant maximum of 28°C (82°F), with an average of 9°C (48°F) and relatively moderate precipitation of 58 mm (2.3 in) over 8 days. The humidity stands at a comfortable 67%. Conversely, January is characterized by significantly colder temperatures, with a minimum of -30°C (-21°F), an average of -10°C (15°F), and a maximum of just 2°C (36°F). Precipitation slightly decreases to 47 mm (1.9 in) but occurs over more days, totaling 12, with a notably high humidity of 93%. For a deeper insight into January weather conditions, you can visit Gardiner weather in January.

In comparing the weather of September and February, significant differences emerge. September averages a milder temperature range, with a minimum of -11°C (13°F) and a maximum reaching up to 28°C (82°F), while February is considerably colder, featuring a minimum of -30°C (-22°F) and a maximum of only 5°C (41°F). Precipitation is more frequent in February, with 90 mm (3.5 in) falling over 18 days compared to September's 58 mm (2.3 in) over just 8 days. Additionally, humidity in February peaks at 92%, creating a stark contrast to September's relatively lower humidity of 67%. For more detailed insights about February weather, please visit Gardiner weather in February.

September and March present contrasting weather patterns. In September, temperatures range from a chilly -11°C (13°F) at night to a warm 28°C (82°F) during the day, with an average of 9°C (48°F). The month sees about 58 mm (2.3 in) of precipitation over eight days, and humidity levels sit at 67%. Meanwhile, March experiences colder temperatures, with minimums plunging to -28°C (-19°F) and a maximum of just 11°C (52°F), averaging around -4°C (25°F). The precipitation measure slightly increases to 64 mm (2.5 in) but occurs over a longer stretch of 14 days, accompanied by higher humidity at 89%. For more specific details, check out the weather comparison in Gardiner weather in March.

When comparing the weather in September and April, notable differences emerge. September boasts a more moderate temperature range, with minimums around -11°C (13°F) and maximums reaching up to 28°C (82°F), resulting in an average temperature of 9°C (48°F). In contrast, April experiences colder temperatures, with minimums dropping to -19°C (-2°F) and maximums peaking at 14°C (58°F), yielding an average of -1°C (30°F). Additionally, September sees less precipitation, totaling 58 mm (2.3 in) over about 8 days, while April is characterized by higher rainfall, accumulating 83 mm (3.3 in) over 17 days. The humidity levels are also higher in April at 83%, compared to September's 67%. For more detailed insights, you can check Gardiner weather in April.

When comparing September and May weather, September generally offers a wider temperature range, with minimums as low as -11°C (13°F) and maximums reaching up to 28°C (82°F), giving an average temperature of 9°C (48°F). In contrast, May sees a cooler average of 3°C (38°F) and maximums only reaching 21°C (70°F), while still experiencing the same minimum temperature of -11°C (13°F). Precipitation is also notable, with September receiving 58 mm (2.3 in) over about 8 days, compared to May's 70 mm (2.8 in) spread across 16 days, indicating May is generally wetter. Additionally, May tends to be more humid, boasting a humidity level of 79% versus September's 67%. For more detailed insights, check out Gardiner weather in May.

September and June present distinct weather patterns. In September, temperatures range from a minimum of -11°C (13°F) to a maximum of 28°C (82°F), with an average temperature of 9°C (48°F). The month typically sees around 58 mm (2.3 in) of precipitation over 8 days, paired with a relative humidity of 67%. In contrast, June offers slightly milder temperatures, with a minimum of -8°C (19°F) and a maximum of 27°C (81°F), averaging 10°C (50°F). However, it is generally wetter, receiving about 88 mm (3.5 in) of precipitation over 16 days, and experiences higher humidity at 76%. For a closer look at the specifics, check out Gardiner weather in June. Overall, while both months have similar temperature ranges, September tends to be drier and less humid than June.

When comparing the weather in September and July, notable differences emerge. September features a wider temperature range, with minimums dropping to -11°C (13°F) and an average of 9°C (48°F), whereas July maintains milder conditions with minimums around -1°C (30°F) and an average temperature of 15°C (60°F). Both months experience similar maximum temperatures, with July peaking at 29°C (85°F) and September reaching slightly higher at 28°C (82°F). Precipitation is more prevalent in September, totaling 58 mm (2.3 in) over 8 days, compared to July's lighter rainfall of 38 mm (1.5 in) over 10 days. Additionally, humidity levels are higher in July at 74%, compared to 67% in September. For a detailed look at the weather in July, you can visit Gardiner weather in July.

In comparing the weather of September and August, September presents a broader range of temperatures, with a minimum of -11°C (13°F) and a maximum of 28°C (82°F), leading to an average of 9°C (48°F). In contrast, August boasts milder conditions, with a minimum of -1°C (30°F) and a maximum of 30°C (86°F), resulting in a higher average of 14°C (57°F). While September receives slightly more precipitation at 58 mm (2.3 in) over 8 days, August has less at 46 mm (1.8 in) over 10 days, suggesting that August is generally drier despite the higher humidity levels of 69%, compared to September's 67%. For more specific details about August weather, you can refer to Gardiner weather in August.

The weather in September and October displays a significant shift, marked by lower temperatures and increased precipitation. September offers a range of temperatures, with a minimum of -11°C (13°F) and a maximum of 28°C (82°F), leading to an average of 9°C (48°F). In contrast, October experiences much colder conditions, with temperatures plummeting to a minimum of -36°C (-32°F) and an average of -1°C (30°F), though it still reaches a maximum of 19°C (67°F). Additionally, October sees slightly higher precipitation levels at 68 mm (2.7 in) over 12 days compared to September's 58 mm (2.3 in) over 8 days. The humidity also rises from 67% in September to 72% in October, contributing to a more pronounced chill in the air. For those interested in more detailed trends, you can explore Gardiner weather in October.

In September, temperatures range from a chilly -11°C (13°F) at the minimum to a warm 28°C (82°F) at the maximum, with an average of 9°C (48°F). The month sees around 58 mm (2.3 in) of precipitation over about 8 days, accompanied by humidity levels averaging 67%. In contrast, November brings a stark drop in temperatures, with minimums plummeting to -26°C (-15°F) and an average of -6°C (21°F), peaking at 11°C (51°F). Precipitation slightly increases to 62 mm (2.5 in), distributed over 14 days, while humidity rises significantly to 89%. For more detailed weather insights in November, visit Gardiner weather in November.

September and December display stark contrasts in weather patterns. In September, temperatures range from a low of -11°C (13°F) to a high of 28°C (82°F), with an average of 9°C (48°F). This month experiences relatively moderate precipitation of 58 mm (2.3 in) over about 8 days and a humidity level of 67%.

Conversely, December is much colder, with temperatures dropping significantly, reaching a minimum of -29°C (-20°F) and averaging -10°C (15°F), while the maximum temperature only reaches 6°C (43°F). Although December has a slightly lower total precipitation of 53 mm (2.1 in), it occurs over more days (14 days), resulting in a much higher humidity of 94%. For more details, check out Gardiner weather in December.

Compare Gardiner's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Gardiner

As September rolls into Gardiner, the weather presents a delightful shift, blending the warmth of summer with the crispness of autumn. With temperatures that can peak at a pleasant 28°C (82°F) and drop to a brisk -11°C (13°F), this month invigorates the landscape, bringing an invigorating chill to the air. While precipitation is moderate, with about 58 mm (2.3 in) falling over approximately eight days, the humidity holds steady at 67%, creating a refreshing atmosphere. Those seeking a balance between sunny days and cool evenings will find September to be an idyllic time to explore the area’s natural beauty. For more insights into the overall climate of the region, check out Gardiner Climate.