September Weather in Hot Springs National Park, United States

Last updated: February 24, 2025

September in Hot Springs National Park offers a delightful blend of warm temperatures and refreshing breezes. With maximum highs reaching 38°C (100°F) and an average of 24°C (76°F), visitors can enjoy the great outdoors while basking in the late summer sun. The evenings cool down to a comfortable 10°C (50°F), perfect for cozy gatherings around campfires. Though September sees about 82 mm (3.2 in) of rainfall over 7 days, the 59% humidity keeps the air feeling refreshing rather than oppressive. This combination of warmth and mild humidity provides an ideal backdrop for exploring the park's natural beauty and legendary hot springs.

September Temperature in Hot Springs National Park

September in Hot Springs National Park offers a pleasant transition into autumn, characterized by mild temperatures that invite outdoor exploration. With minimums around 10°C (50°F) and averages climbing to 24°C (76°F), the days are comfortably warm, while maximums can reach up to 38°C (100°F), reminiscent of the lingering summer heat. This month stands out as a period of stable warmth, following the peak summer temperatures of July and August. As the month progresses, visitors can expect a gradual cool-down, yet early September still reflects a delightful summer vibe, making it an ideal time for hiking and soaking in the park's famous thermal waters.

September Weather in Hot Springs National Park: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Hot Springs National Park, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec434555617178818076645147
Data source: Temperature data for Hot Springs National Park 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 Hot Springs National Park

In September, Hot Springs National Park experiences a noticeable shift in precipitation, totalizing around 82 mm (3.2 in) over just 7 rainy days. This marks a decline from the heavier rainfall of previous months, particularly May and April, which both recorded over 160 mm. While September's precipitation is lower, it maintains a consistent early autumn pattern, offering a gentler transition as the park prepares for the drier months ahead. The reduced rainfall not only contributes to a more pleasant outdoor experience but also allows for the vibrant colors of fall foliage to gradually emerge, making September a serene and picturesque time to explore this beautiful landscape.

September Precipitation Trends in Hot Springs National Park

The chart displays monthly precipitation patterns in Hot Springs National Park, 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.
JanFebMarAprMayJunJulAugSepOctNovDec9115415616216811399117829379130
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Hot Springs National Park

As summer transitions to fall, September brings a notable drop in humidity for Hot Springs National Park, falling to 59%. This decline continues the trend established in the preceding months, where the peak humidity of 82% in May gives way to increasingly drier air as autumn approaches. Notably, September boasts the lowest humidity level since early summer, contrasting sharply with the high humidity experienced earlier in the year. This shift not only enhances comfort for outdoor activities but also marks the beginning of a more relaxed atmosphere as visitors embrace the cooler, crisper air of autumn. As such, September serves as a delightful intermission between the sultry summer months and the refreshing fall season.

September Average Humidity in Hot Springs National Park

This chart illustrates the average monthly humidity levels in Hot Springs National Park, 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.
JanFebMarAprMayJunJulAugSepOctNovDec82%79%77%78%82%81%75%61%59%69%82%88%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Hot Springs National Park

In September, Hot Springs National Park experiences a UV Index of 9, placing it in the very high exposure category with a burn time of just 15 minutes. This marks a slight decrease from the peak summer months, where the index hit an extreme 11 in June and July. As summer transitions to fall, the UV levels remain significant, encouraging visitors to stay vigilant about sun protection. With the UV Index steadily declining from its summer highs, September offers an ideal opportunity to explore the park while still being mindful of sun exposure. For more details, visit Hot Springs National Park UV Index.

Maximum UV Index Levels in Hot Springs National Park for September

The chart shows the monthly maximum UV Index (UVI) for Hot Springs National Park 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.
JanFebMarAprMayJunJulAugSepOctNovDec46810111111109754
Data source: Hot Springs National Park 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 Hot Springs National Park

September in Hot Springs National Park ushers in a delightful transition as summer's blaze gradually gives way to the gentle embrace of autumn. With an impressive 288 hours of sunshine, this month reflects a slight dip from the sun-soaked peak of summer, which hits 345 hours in July. However, September's golden rays continue to illuminate the stunning landscapes, encouraging visitors to explore the park's vibrant trails and soothing thermal waters. As the days shorten and the air cools, it’s a perfect time to bask in the lingering warmth while witnessing nature’s transition, all set against a backdrop of rich fall colors that begin to emerge. This blend of abundant sunlight and seasonal change makes September a standout month for both serenity and adventure in the park.

Monthly Sunshine Duration in Hot Springs National Park: September Highlighted

The September sunshine duration represents the total number of hours Hot Springs National Park 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.
JanFebMarAprMayJunJulAugSepOctNovDec148h157h213h250h303h323h345h316h288h255h223h205h
Data source: Hot Springs National Park September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Hot Springs National Park During September

As September rolls into Hot Springs National Park, visitors can look forward to a notable 62% chance of sunshine, making it one of the sunniest months of the year. This trend towards clearer skies follows the peak summer months of July and August, which boast 58% and 59% likelihoods of sunny weather, respectively. Interestingly, the chance of sun typically dips in the spring and early summer but begins to rise again in the fall. With October maintaining a commendable 56% chance of sunshine, September stands out as a delightful time for outdoor activities, inviting nature enthusiasts to enjoy the vibrant scenery under increasingly bright skies.

Percentage of Sunny Days in September in Hot Springs National Park

The chart illustrates the percentage of sunny days in Hot Springs National Park 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 Hot Springs National Park experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec46%36%46%50%31%45%58%59%62%56%64%38%
Data source: Hot Springs National Park September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Hot Springs National Park in September

As summer gently transitions to autumn, September in Hot Springs National Park offers a delightful retreat with 12 hours of daylight. This month marks a gradual decrease from the 14 hours experienced in July and June, reflecting nature's shift toward shorter days. Following the lush vibrancy of summer, September maintains a generous amount of sunlight, still allowing ample time for exploration and enjoyment of the park's stunning landscapes. The trend of declining daylight will continue into October, yet September remains a sweet spot where warm days can still be savored before the embrace of fall sets in.

Average Daylight Hours in Hot Springs National Park for September

The chart illustrates the variation in daylight duration in Hot Springs National Park 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 24m14h 10m13h 22m12h 20m11h 16m10h 20m9h 52m
Data source: Hot Springs National Park daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Hot Springs National Park

As September arrives in Hot Springs National Park, the gentle whisper of the wind offers a subtle transition into autumn. With an average wind speed of 2.3 m/s (5 mph), September experiences a slight uptick from the summer's calm. This month marks a shift from the peak temperatures and the low winds of July and August, which recorded their averages at 2.0 m/s (4 mph) and 2.2 m/s (5 mph), respectively. The return to higher speeds becomes noticeable in October, hinting at the invigorating breezes to come. The overall trend illustrates a cooling and refreshing change, perfectly complementing the park's stunning fall foliage, making September a delightful time for visitors who relish in the gentle caress of the crisp air.

Average September Wind Speed in Hot Springs National Park

The chart displays monthly wind speed patterns in Hot Springs National Park, 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.
JanFebMarAprMayJunJulAugSepOctNovDec3.03.13.23.13.02.42.02.22.3 m/s3.02.93.3
Data source: Hot Springs National Park September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Hot Springs National Park Compares to Other Months

The weather in Hot Springs National Park 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 Hot Springs National Park and find detailed weather information for every month.

September and January present contrasting weather patterns. In September, temperatures are generally warmer, with minimums of 10°C (50°F) and averages up to 24°C (76°F), peaking at a hot 38°C (100°F). The month sees about 82 mm (3.2 in) of precipitation, with rain on approximately 7 days and a relative humidity of 59%.

In stark contrast, January is much colder, featuring minimum temperatures dropping to -15°C (6°F) and averages around 6°C (43°F). The maximum temperature in January can reach 23°C (74°F). Precipitation during this winter month is slightly higher at 91 mm (3.6 in) over about 9 days, accompanied by increased humidity of 82%. For more detailed information, you can check the Hot Springs National Park weather in January.

September and February present strikingly contrasting weather conditions. In September, temperatures can soar, with averages around 24°C (76°F) and maxima reaching up to 38°C (100°F), while the humidity sits at a moderate 59%. However, it also sees a fair amount of rainfall, with 82 mm (3.2 in) over about 7 days. In contrast, February brings much colder temperatures, with an average of 7°C (46°F) and a chilling minimum of -19°C (-2°F). This month is wetter, too, with 154 mm (6.1 in) of precipitation spread over 14 days and higher humidity at 79%. For a detailed look at the conditions during this time, you can refer to this link: Hot Springs National Park weather in February.

September and March showcase contrasting weather patterns. In September, temperatures range from a minimum of 10°C (50°F) to a maximum of 38°C (100°F), with an average of 24°C (76°F) and relatively lower humidity at 59%. The month sees about 82 mm (3.2 in) of precipitation over approximately 7 days. In stark contrast, March experiences much cooler temperatures, with a minimum of -6°C (21°F) and an average of 13°C (56°F), peaking at 30°C (86°F). Precipitation is substantially higher in March, totaling 156 mm (6.2 in) over 14 days, accompanied by increased humidity at 77%. For more detailed insights, check out Hot Springs National Park weather in March.

When comparing the weather in September and April, we can observe significant differences in temperature and precipitation. September typically experiences warmer conditions, with temperatures ranging from a minimum of 10°C (50°F) to a maximum of 38°C (100°F), averaging around 24°C (76°F). In contrast, April starts with cooler temperatures, ranging from a minimum of -1°C (31°F) to a maximum of 30°C (87°F), with an average of 16°C (61°F).

Regarding precipitation, April sees more rainfall, measuring 162 mm (6.4 in) over approximately 11 days, compared to September's 82 mm (3.2 in) over 7 days. This increase in rainfall contributes to higher humidity levels in April, averaging 78%, while September's humidity is slightly lower at 59%. For a more detailed look at the weather patterns during April, you can visit Hot Springs National Park weather in April.

In comparing the weather of September and May, September tends to be warmer with average temperatures around 24°C (76°F) and occasional highs reaching up to 38°C (100°F). In contrast, May offers slightly cooler temperatures, with an average of 21°C (71°F) and a maximum of 35°C (95°F). Additionally, May experiences significantly more precipitation, totaling 168 mm (6.6 in) over about 14 days, compared to September's 82 mm (3.2 in) across 7 days. The humidity in May is also higher at 82%, while September sees a lower humidity level of 59%. For more details on May weather, check out Hot Springs National Park weather in May.

In comparing the weather between September and June, we see some notable differences. September typically experiences a minimum temperature of 10°C (50°F) and averages around 24°C (76°F), while June has slightly warmer conditions with a minimum of 11°C (52°F) and an average temperature of 26°C (79°F). Both months can reach maximum temperatures of up to 38°C (100°F), but June has a higher overall precipitation level, with 112 mm (4.4 in) across 12 rainy days, compared to September's 82 mm (3.2 in) over 7 days. Additionally, humidity is noticeably lower in September at 59%, in contrast to June's higher humidity level of 81%. For further details on June weather, you can refer to Hot Springs National Park weather in June.

When comparing the weather in September and July, September tends to be slightly cooler with average temperatures around 24°C (76°F) compared to July's warmer average of 27°C (82°F). Both months experience similar maximum temperatures, with July reaching up to 38°C (101°F) and September peaking at 38°C (100°F). However, July has a higher minimum temperature of 16°C (61°F) versus September's cooler minimum of 10°C (50°F). Additionally, September receives about 82 mm (3.2 in) of precipitation over 7 days, while July is slightly wetter with 99 mm (3.9 in) of rain over 12 days. Humidity is also higher in July at 75%, compared to September's more comfortable 59%. For more details, you can view Hot Springs National Park weather in July.

When comparing the weather in September to that of August, September typically experiences slightly cooler temperatures, with average highs of 24°C (76°F) compared to August's 26°C (80°F). The minimum temperatures in September drop significantly to 10°C (50°F), while August's minimum is 17°C (63°F). Additionally, September sees a decrease in precipitation, recording 82 mm (3.2 in) over 7 days, compared to August’s 117 mm (4.6 in) over 11 days. Humidity levels remain relatively similar, with September at 59% and August slightly higher at 61%. For more detailed weather information on August, you can check out Hot Springs National Park weather in August.

September in Hot Springs National Park features warmer temperatures, with a minimum of 10°C (50°F) and an average high of 38°C (100°F), while October sees cooler conditions, with temperatures dropping to a minimum of -1°C (31°F) and an average maximum of 34°C (94°F). Precipitation increases slightly in October to 93 mm (3.7 in) over 8 days, compared to September's 82 mm (3.2 in) over 7 days. Additionally, October experiences higher humidity levels at 69%, compared to September's 59%. For more detailed weather information, you can visit Hot Springs National Park weather in October.

In September, temperatures range from a mild 10°C (50°F) at night to a scorching average high of 38°C (100°F), making it one of the warmest months of the year. The average precipitation is 82 mm (3.2 in), occurring over about 7 days, with humidity at a comfortable 59%. In contrast, November brings a noticeable chill, with temperatures dipping to a minimum of -8°C (18°F) and averaging around 11°C (52°F). The maximum temperature reaches a milder 28°C (82°F), while precipitation slightly decreases to 79 mm (3.1 in) across 8 days, and humidity rises to 82%. For more detailed insights, check out Hot Springs National Park weather in November.

In September, the weather is characterized by warm temperatures, with a minimum of 10°C (50°F), an average of 24°C (76°F), and a maximum reaching up to 38°C (100°F). The month also sees some rainfall, averaging 82 mm (3.2 in) over approximately 7 days, accompanied by a humidity level of 59%. In contrast, December brings much cooler conditions, with temperatures dropping to a minimum of -7°C (19°F) and an average of just 9°C (48°F); the maximum temperature peaks around 26°C (79°F). Precipitation increases during this winter month, recorded at 130 mm (5.1 in) over about 10 days, alongside higher humidity at 87%. For more detailed information, you can check Hot Springs National Park weather in December.

Compare Hot Springs National Park's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Hot Springs National Park

As September rolls into Hot Springs National Park, visitors can expect a delightful transition from the sweltering summer heat, with temperatures averaging around 24°C (76°F), while highs can still reach 38°C (100°F). Unlike the more humid peak summer months, the weather begins to cool slightly, offering a pleasant experience for outdoor adventures. However, nature does bring some moisture, with an average of 82 mm (3.2 in) of precipitation spread across about 7 days, contributing to the park's lush environment. This month strikes a unique balance between warmth and refreshing breezes, making it an ideal time for exploration. For more insights into the unique weather patterns throughout the year, visit Hot Springs National Park Climate.