Last updated: February 24, 2025
In October, Chattanooga experiences a captivating blend of warm and cool weather, with temperatures ranging from a maximum of 37°C (99°F) to a brisk minimum of -2°C (29°F). The average temperature hovers around a comfortable 18°C (65°F), making it a delightful time for seasonal activities. Precipitation is notable, with 133 mm (5.2 in) recorded over roughly 10 days, contributing to the region’s lush autumn landscapes. Coupled with a humidity level of 74%, the month provides a diverse climate that reflects the charm of fall in the Tennessee River Valley.
In October, Chattanooga experiences a remarkable shift in temperatures as the city embraces the cool embrace of autumn. The minimum temperature dips to about -2°C (29°F), signaling the end of warmer days, while daytime averages hover around a pleasant 18°C (65°F). Enthusiasts of the season will appreciate the occasional peak at a maximum of 37°C (99°F), reminiscent of summer days. This month stands out as a transition, juxtaposing the cooler mornings with mild afternoons, making it ideal for outdoor activities amidst the stunning fall foliage. As the city moves toward winter, the temperature trends suggest a gradual descent into colder months, while still offering a delightful array of warmth during the day.
October in Chattanooga sees a notable increase in precipitation, with 133 mm (5.2 in) accumulating over 10 days. This month marks a shift from the drier conditions of September, where rainfall measured 106 mm (4.2 in) over just 8 days. As autumn unfolds, the city experiences a blend of cooler temperatures and vibrant foliage, complemented by consistent rain that often supports lush landscapes. The precipitation in October stands out when compared to the previous months, highlighting a trend where early fall storms contribute to heightened moisture levels as the region transitions toward winter. This balance of rainfall keeps the scenery picturesque, making it a beautiful time to explore the outdoors in Chattanooga.
As October rolls around in Chattanooga, the air feels refreshing with a humidity level of 74%, marking a noticeable decline from the muggy summer months. Throughout the year, humidity peaks in the colder months—averaging around 87% in January and February—providing a stark contrast to the summer's lower levels, with August seeing a dip to just 67%. The transition into fall brings a gradual decrease, as September plummets to 64%, before stabilizing in October. This trend reveals the city's shift away from the summer heat, offering a comfortably crisp atmosphere that invites outdoor exploration, while still holding onto a hint of the lingering humidity characteristic of the region's climate.
As October rolls in, the UV Index in Chattanooga, United States, reflects a notable shift towards milder exposure levels, with a rating of 7 categorized as high. This month's burning time stretches back to 25 minutes, allowing for longer outdoor enjoyment compared to the peak summer months, where extreme levels frequently hovered at an Index of 11. Following September’s UV Index of 9, it’s clear that while the sun starts to lower its intensity, caution is still advised. Whether you’re soaking in the fall colors or enjoying the crisp air, be sure to stay informed about the sun’s strength. For more details, check out the Chattanooga UV Index.
UV Risk Categories
October in Chattanooga offers a delightful blend of warm days and stunning fall colors, encapsulated by 253 hours of sunshine—the perfect backdrop for autumn activities. As the seasons transition, October stands as a vibrant marker just before the decrease in daylight that accompanies November's 226 hours. Notably, it's a time when sunny days begin to wane from the peak brightness of summer, with July basking in 317 hours. This gradual decline highlights Chattanooga's charm throughout the year, making October a splendid time to enjoy the outdoors before winter sets in. The consistent sunshine from July through October creates an inviting atmosphere for both locals and visitors, showcasing the region's natural beauty in a warm, golden glow.
In Chattanooga, the likelihood of sunny weather in October stands at a moderate 36%, mirroring the sunniest months of January, March, and July. This trend suggests a subtly unpredictable climate, typical of early autumn, where lingering summer warmth meets the crispness of approaching winter. As summer fades, October brings a slight uptick from the 31% chance seen in May, yet it remains below the more promising 49% of September. The weather during this month reflects a transitional period, hinting at both the cozy allure of fall foliage and the potential for crisp sunny days, making it a delightful time for outdoor activities, albeit with a touch of unpredictability.
As autumn unfolds in Chattanooga, October brings a slight dip in daylight, offering around 11 hours of sun each day. This marks a gentle transition from the vibrant, sun-drenched days of summer, where residents enjoyed up to 14 hours of daylight in June, July, and August. Following the peak of summer, daylight gradually recedes, with September seeing a further decline to 12 hours. The trend reflects nature’s rhythm, shifting towards longer nights as the year progresses. As October sets in, locals can relish the lingering warmth of fall while anticipating the cozy, shorter days of November and December, which usher in approximately 10 and 9 hours of daylight, respectively.
As October unfolds in Chattanooga, the winds begin to whisper a transition, marking a gentle shift in the air with an average speed of 2.1 m/s (5 mph). This month strikes a balance after the notably calm summer, where July and August saw their lowest speeds at 1.8 m/s (4 mph) and 1.6 m/s (4 mph), respectively. Interestingly, October’s winds are slightly stronger than those of the late summer months, hinting at the approach of fall’s invigorating breezes. With an uptick to 2.1 m/s, the winds signal a refreshing change as they prepare to accompany the vivid autumn foliage, creating a perfect backdrop for outdoor activities and scenic strolls through the city’s beautiful parks. The trend of increasing wind speeds continues into November, suggesting that as the temperatures drop, the winds will start to pick up, continuing the seasonal rhythm that characterizes Chattanooga's climate.
The weather in Chattanooga changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of October's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Chattanooga and find detailed weather information for every month.
In October, temperatures in Chattanooga range from a chilly minimum of -2°C (29°F) to a warm maximum of 37°C (99°F), with an average of 18°C (65°F). The month experiences substantial precipitation of 133 mm (5.2 in) over approximately 10 days, and humidity hovers around 74%. In contrast, January brings much colder temperatures, with a minimum of -13°C (9°F) and a more modest maximum of 24°C (75°F), averaging just 6°C (43°F). Precipitation decreases slightly to 99 mm (3.9 in) over the same number of days, while humidity increases to 87%. For more details about the January weather in Chattanooga, visit Chattanooga weather in January.
When comparing October and February weather, notable differences emerge in temperature and precipitation patterns. October experiences a broader temperature range, with a minimum of -2°C (29°F) and a maximum of 37°C (99°F), leading to an average of 18°C (65°F). In contrast, February has cooler temperatures, with a minimum of -7°C (20°F) and a maximum of 26°C (79°F), averaging only 9°C (48°F). Precipitation levels are higher in February, totaling 171 mm (6.7 in) over 14 days, compared to October's 133 mm (5.2 in) across 10 days. Additionally, February tends to be more humid, with a humidity level of 87% compared to October's 74%. For more detailed insight into February weather in Chattanooga, visit Chattanooga weather in February.
When comparing the weather in October and March, notable differences emerge. October typically enjoys a wider temperature range with minimums around -2°C (29°F) and maximums soaring to 37°C (99°F), leading to an average of 18°C (65°F). This month experiences around 133 mm (5.2 in) of precipitation over 10 days, coupled with a humidity level of 74%. In contrast, March presents a cooler atmosphere with minimum temperatures dipping to -6°C (22°F) and maximums reaching a milder 29°C (84°F), averaging 12°C (54°F). Despite March having slightly more precipitation at 169 mm (6.7 in) over 13 days, it also carries a higher humidity at 85%. For more detailed insights into the weather in this transitional month, check out Chattanooga weather in March.
When comparing October and April weather, both months experience a range of temperatures but with notable differences. In October, the average temperature reaches 18°C (65°F), with a minimum of -2°C (29°F) and a maximum that can soar to 37°C (99°F). In contrast, April's average is slightly lower at 16°C (60°F), with temperatures ranging from a minimum of -1°C (30°F) to a maximum of 30°C (87°F).
Precipitation is also a factor, with October receiving 133 mm (5.2 in) over about 10 days, while April sees a bit more rainfall at 156 mm (6.2 in) within the same number of days. Humidity levels are higher in April at 82%, compared to October's 74%. For a more detailed look at April weather, you can refer to Chattanooga weather in April.
October and May present distinctly different weather patterns. In October, temperatures range from a crisp minimum of -2°C (29°F) to a warm maximum of 37°C (99°F), with an average of 18°C (65°F). This month experiences more significant precipitation, totaling 133 mm (5.2 in) over 10 days, and a humidity level of 74%. In contrast, May offers a milder climate, with temperatures varying from a minimum of 4°C (39°F) to a comfortable maximum of 34°C (93°F) and an average of 21°C (70°F). The precipitation in May is lower, at 96 mm (3.8 in) over the same number of days, and humidity rises slightly to 83%. For more details, check out Chattanooga weather in May.
When comparing the weather in October and June, notable differences emerge. October experiences a wider temperature range, with minimums dropping to -2°C (29°F) and maximums reaching up to 37°C (99°F), while June offers milder temperatures that typically span from a minimum of 11°C (51°F) to a maximum of 34°C (94°F). Additionally, October sees slightly higher rainfall, totaling 133 mm (5.2 in) over about 10 days, compared to June’s 120 mm (4.7 in) over 13 days. Humidity levels also vary, with October's average at 74% and June peaking at 82%. For those interested in more details about June weather, you can check Chattanooga weather in June.
October and July exhibit notable differences in weather patterns. October experiences a wider temperature range, with minimums dropping to -2°C (29°F) and maximums reaching 37°C (99°F), while the average temperature is a comfortable 18°C (65°F). In contrast, July maintains a milder minimum temperature of 16°C (61°F) and an average of 26°C (80°F), with a maximum only slightly lower at 37°C (98°F). Precipitation is more frequent in October, with 133 mm (5.2 in) over 10 days, compared to July’s 106 mm (4.2 in) across 14 days. Humidity levels are also similar, with October at 74% and July slightly higher at 78%. To learn more about July's weather specifics, you can visit Chattanooga weather in July.
October presents a more diverse temperature range compared to August, with minimums dipping to -2°C (29°F) and highs reaching 37°C (99°F). In contrast, August maintains a milder minimum temperature of 15°C (60°F) and an average high of 35°C (96°F). While October experiences slightly more precipitation at 133 mm (5.2 in) over about 10 days, August sees a similar amount of rainfall at 121 mm (4.8 in) across 14 days, accompanied by lower humidity levels at 67% compared to October's 74%. For more insights, check out Chattanooga weather in August.
In comparing the weather patterns of October and September, October showcases a broader temperature range with minimums dropping to -2°C (29°F) and average highs of 18°C (65°F), while September maintains milder conditions with a minimum of 9°C (48°F) and an average of 24°C (75°F). Both months reach maximum temperatures of 37°C (99°F) and 37°C (98°F) respectively, indicating that late summer heat can linger well into October. Precipitation is slightly higher in October, totaling 133 mm (5.2 in) over 10 days, compared to September's 106 mm (4.2 in) over 8 days. Additionally, October experiences greater humidity at 74%, in contrast to September's 64%. For more detailed insights, you can view Chattanooga weather in September.
October and November exhibit notable differences in weather patterns. October experiences a wide temperature range, with minimums dropping to -2°C (29°F) and maximums reaching a warm 37°C (99°F), resulting in an average of 18°C (65°F). It also sees significant precipitation, totaling 133 mm (5.2 in) over 10 days, and a humidity level of 74%. In contrast, November brings cooler temperatures, with minimums dipping to -6°C (21°F) and maximums capping at 26°C (79°F), averaging only 10°C (50°F). Precipitation decreases to 72 mm (2.8 in) across 8 days, and humidity rises to 87%. For more detailed insights, check out Chattanooga weather in November.
In October, temperatures range from a chilly minimum of -2°C (29°F) to a warm maximum of 37°C (99°F), with an average temperature of 18°C (65°F). The month experiences 133 mm (5.2 in) of precipitation over approximately 10 days, accompanied by a humidity level of 74%. In contrast, December brings colder conditions, with temperatures ranging from a low of -8°C (18°F) to a high of 23°C (73°F), yielding an average of 8°C (46°F). Precipitation slightly increases to 139 mm (5.5 in) over the same number of days, while humidity rises to 88%. For more details on December weather, visit Chattanooga weather in December.
In October, Chattanooga experiences a distinct shift in weather compared to the warmer summer months. With an average temperature of 18°C (65°F), days are pleasantly cooler, yet occasionally reach highs of 37°C (99°F). The month brings considerable humidity at 74%, creating a refreshing atmosphere, especially during the transition into fall. Precipitation is common with about 133 mm (5.2 in) falling over approximately 10 days, indicating a noticeable increase in rainfall in October compared to the drier summer. This month’s blend of warmth and cooler evenings sets the stage for a beautiful autumn, making it an ideal time to experience the stunning fall foliage. For more detailed insights, explore Chattanooga Climate.