July Weather in Chattanooga, United States

Last updated: February 24, 2025

In Chattanooga, United States, July presents a warm embrace, with maximum temperatures reaching up to 37°C (98°F) and an average of 26°C (80°F), perfect for sun-seekers. The humidity level hovers around 78%, adding a tropical feel to the summer air. However, expect some showers, as the month records 106 mm (4.2 in) of precipitation over approximately 14 days. Overall, July in Chattanooga is a vibrant mix of heat and humidity, ideal for outdoor adventures tempered by refreshing summer rains.

July Temperature in Chattanooga

In Chattanooga during July, temperatures reach their peak, embracing the warmth of summer with a minimum of 16°C (61°F) and a comfortable average of 26°C (80°F). The heat intensifies as the month progresses, soaring to a maximum of 37°C (98°F), providing an ideal backdrop for outdoor activities and enjoying the local scenery. This pattern of warm weather contrasts sharply with the colder winter months, notably January where the mercury dips as low as -13°C (9°F). The gradual rise from June to July highlights the transition into the city's hottest season, making these weeks perfect for sun-soaked adventures and evening gatherings under the stars.

July Weather in Chattanooga: Daily Temperature Highs, Lows, and Averages

The chart illustrates July temperature patterns in Chattanooga, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec434854607076797874645046
Data source: Temperature data for Chattanooga 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.

July Precipitation in Chattanooga

In July, Chattanooga experiences a varied precipitation profile, receiving approximately 106 mm (4.2 in) of rain over 14 days. This month's rainfall is slightly above the average for the summer season, which is highlighted by the consistent precipitation patterns noted earlier in the year. Though this is a dip compared to the wettest months of February and March, it continues a trend of frequent rainfall that shapes the city's lush greenery. Moving into late summer, Chattanooga typically sees a slight increase in precipitation again in August, suggesting a humid and dynamic climate that keeps both temperatures and rainfall in a perpetual dance.

July Precipitation Trends in Chattanooga

The chart displays monthly precipitation patterns in Chattanooga, with values for each month alongside July's data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how July's conditions compare to those of other months.
JanFebMarAprMayJunJulAugSepOctNovDec991711691569612010612110613372139
Data source: Precipitation data for July generated using information from the Copernicus Climate Change Service.
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July Humidity in Chattanooga

July marks a notable shift in humidity levels in Chattanooga, United States, where the average drops to 78%, signaling the peak of summer. This decline follows a gradual decrease from the spring months, where humidity remained relatively high, averaging 82% in June. As the region transitions into August, a sharper drop can be observed, plunging to 67%, indicating a trend towards drier conditions as summer wanes. Despite its humid subtropical climate, July stands out as a month where residents can experience a brief respite from the heavier moisture that envelops the city for much of the year, particularly in the cooler months of January and February, when humidity levels soar to 87%.

July Average Humidity in Chattanooga

This chart illustrates the average monthly humidity levels in Chattanooga, with July's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how July's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec87%87%85%82%83%82%78%67%64%75%87%89%
Data source: Humidity data for July generated using information from the Copernicus Climate Change Service.

July UV Index in Chattanooga

In July, Chattanooga experiences its peak UV Index, maintaining an extreme level of 11, just like the previous month. This intense exposure means you'll want to be extra cautious, as the burn time is a mere 10 minutes for unprotected skin. The trend through the summer months indicates a steady rise in UV intensity, starting from a moderate index of 4 in January to this peak in July. Following this, the UV Index begins to decrease slightly, suggesting that while summer is blazing, autumn is just around the corner. For those enjoying outdoor activities, it's vital to be prepared and protected, as the sun shows no signs of letting up. To learn more about UV levels throughout the year, check out the Chattanooga UV Index.

Maximum UV Index Levels in Chattanooga for July

The chart shows the monthly maximum UV Index (UVI) for Chattanooga in July, 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.
JanFebMarAprMayJunJulAugSepOctNovDec46810111111109753
Data source: Chattanooga July 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.

July Sunshine in Chattanooga

July shines as the brightest gem in Chattanooga’s summer crown, boasting a remarkable 317 hours of sunshine. This peak reflects a sunny trend that begins in the earlier months, gradually intensifying from 146 hours in January to a robust 302 hours by June. As we transition into August, sunlight begins to taper off slightly to 305 hours, yet the warmth of July lingers in the air. This pattern indicates that while the days may grow shorter in the latter half of the year, July firmly establishes itself as a vibrant celebration of summer’s abundant light, encouraging outdoor adventures and cherished moments under the sun.

Monthly Sunshine Duration in Chattanooga: July Highlighted

The July sunshine duration represents the total number of hours Chattanooga experiences direct sunlight during the month of July, excluding cloudy or obstructed periods. This chart compares the sunshine duration of July with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec146h153h217h265h302h300h317h305h276h253h226h168h
Data source: Chattanooga July Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Chattanooga During July

In Chattanooga, the likelihood of sunny weather in July hovers around 39%, making it one of the sunnier months of the summer but not the sunniest overall. While July experiences a slight uptick compared to the previous months, such as June’s 37% and May’s 31%, it falls short of the more favorable sunny conditions seen in April and September, which boast 52% and 49% chance of sun respectively. This trend suggests that, while outdoor activities are still quite enjoyable in July, residents and visitors should remain prepared for a mix of sunshine and clouds. As the year progresses, November shines brightest with a promising 57% likelihood, positioning it as a delightful surprise in the Chattanooga weather calendar.

Percentage of Sunny Days in July in Chattanooga

The chart illustrates the percentage of sunny days in Chattanooga throughout the year, with July 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 Chattanooga experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec36%38%36%52%31%37%39%35%49%36%57%37%
Data source: Chattanooga July chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Chattanooga in July

In Chattanooga, July marks a peak in daylight duration, with a consistent 14 hours of sunlight that invites outdoor activities and summer adventures. This month, along with June and May, represents the high point of the year, showcasing a clear upward trend as the city transitions from the shorter days of winter into the vibrant, sunny months of summer. Following July, daylight begins to gradually decrease, hinting at the upcoming shift towards autumn. The seamless transition from 10 hours in the chill of January to the long, radiant days of July illustrates the region's embrace of seasonal change, making it a delightful time for both residents and visitors to enjoy the great outdoors.

Average Daylight Hours in Chattanooga for July

The chart illustrates the variation in daylight duration in Chattanooga throughout the year, with July highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec10h 5m10h 55m11h 59m13h 5m14h14h 27m14h 12m13h 23m12h 20m11h 15m10h 18m9h 49m
Data source: Chattanooga daylight hours, calculated by summing the hours between sunrise and sunset for each day.

July Winds in Chattanooga

In Chattanooga, July brings the calmest winds of the year, with an average speed of just 1.8 m/s (4 mph). This marks a noticeable decline from the spring months, where winds hovered around 2.5 m/s to 2.8 m/s. As summer sets in, the trend continues to show a consistent decrease in wind speed, peaking in the cooler months of December and January, where speeds return to 2.5 m/s or higher. This gentle July breeze invites leisurely outdoor activities, allowing residents and visitors alike to enjoy the warm days and pleasant evenings without the interruption of stronger winds.

Average July Wind Speed in Chattanooga

The chart displays monthly wind speed patterns in Chattanooga, with values for each month shown alongside July's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how July's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec2.52.72.82.52.42.11.8 m/s1.61.82.12.32.7
Data source: Chattanooga July wind data, generated using information from the Copernicus Climate Change Service.

How July Weather in Chattanooga Compares to Other Months

The weather in Chattanooga changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of July'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.

July and January present contrasting weather experiences. In July, temperatures range from a minimum of 16°C (61°F) to a maximum of 37°C (98°F), with an average of 26°C (80°F) and a higher humidity level of 78%. This month also sees significant rainfall, with around 106 mm (4.2 in) over 14 days. In stark contrast, January experiences much cooler temperatures, with a minimum of -13°C (9°F) and a maximum of 24°C (75°F), averaging only 6°C (43°F). The precipitation during January is slightly lower at 99 mm (3.9 in) over 10 days, paired with a high humidity level of 87%. For a more detailed look at January weather in Chattanooga, you can check Chattanooga weather in January.

The weather in July and February presents a stark contrast in Chattanooga. July boasts a minimum temperature of 16°C (61°F) and an average of 26°C (80°F), reaching a maximum of 37°C (98°F), along with high humidity at 78%. Although July experiences about 106 mm (4.2 in) of precipitation over 14 days, it is generally characterized by warm and humid conditions. In comparison, February features a much cooler climate, with temperatures ranging from a minimum of -7°C (20°F) to a maximum of 26°C (79°F), and an average of 9°C (48°F). This month sees a higher total precipitation of 171 mm (6.7 in), also spread across 14 days, along with increased humidity levels at 87%. For more details about February weather in Chattanooga, visit Chattanooga weather in February.

In comparing the weather between July and March, a stark contrast is evident. July boasts warmer temperatures, with a minimum of 16°C (61°F) and an average of 26°C (80°F), peaking at a sweltering maximum of 37°C (98°F). This month also sees significant precipitation, totaling 106 mm (4.2 in) over 14 days, accompanied by a relatively high humidity level of 78%. In contrast, March experiences much cooler temperatures, ranging from a minimum of -6°C (22°F) to an average of 12°C (54°F), with a maximum of 29°C (84°F). Interestingly, March brings even higher precipitation at 169 mm (6.7 in) over 13 days, along with an elevated humidity level of 85%. For more detailed information, check out Chattanooga weather in March.

In comparing the weather between April and July, there is a notable shift in temperature and precipitation. April experiences cooler temperatures, with a minimum of -1°C (30°F) and an average of 16°C (60°F), while July boasts much warmer conditions, including a maximum of 37°C (98°F) and an average of 26°C (80°F). Additionally, April has a higher precipitation level of 156 mm (6.2 in) over 10 days, compared to July's 106 mm (4.2 in) spread across 14 days. Humidity levels are relatively similar, with April at 82% and July slightly lower at 78%. For more details on April weather specifically, you can check out Chattanooga weather in April.

In comparison, July features a significantly warmer climate than May, with average temperatures peaking at 26°C (80°F), while May’s average sits at a cooler 21°C (70°F). July records higher maximum temperatures that can reach up to 37°C (98°F), whereas May’s highs cap at 34°C (93°F). Additionally, July experiences more precipitation, totaling 106 mm (4.2 in) over 14 days, compared to May's 96 mm (3.8 in) across just 10 days. Humidity levels are similar, with July at 78% and May slightly higher at 83%. For more detailed insights, check Chattanooga weather in May.

In comparing the weather of June and July, we see a notable increase in temperature as July's minimum temperature is 16°C (61°F), averaging 26°C (80°F), with a maximum reaching up to 37°C (98°F). In contrast, June features a cooler minimum of 11°C (51°F) and an average temperature of 24°C (76°F), peaking at 34°C (94°F). While July experiences relatively high humidity at 78%, June is slightly more humid at 82%. Additionally, precipitation in July falls to 106 mm (4.2 in) over 14 days, while June sees more rainfall at 120 mm (4.7 in) across 13 days. For a detailed look at June's weather, visit Chattanooga weather in June.

In comparing the weather patterns of July and August, we see that both months feature a similar average temperature of 26°C (80°F), making them comfortable summer months. However, July experiences slightly higher maximum temperatures, reaching up to 37°C (98°F), compared to August's peak of 35°C (96°F). Precipitation is also noteworthy; August typically sees a bit more rainfall, with 121 mm (4.8 in) compared to July's 106 mm (4.2 in), while the number of rainy days remains consistent at 14 for both months. Additionally, August enjoys lower humidity levels at 67% compared to July's higher humidity of 78%. For a more detailed look at what to expect, check out Chattanooga weather in August.

July and September exhibit notable differences in weather, despite sharing the same maximum temperature of 37°C (98°F). July is characterized by warmer nights, with minimum temperatures averaging 16°C (61°F), whereas September sees cooler nights, dropping to a minimum of 9°C (48°F). The average temperature in July is 26°C (80°F), while in September, it slightly decreases to 24°C (75°F). Precipitation remains consistent in both months, with 106 mm (4.2 in) recorded, but July experiences rain on 14 days compared to just 8 days in September. Additionally, September enjoys lower humidity levels at 64%, in contrast to the more humid July, which holds an average humidity of 78%. For more detailed information, you can check Chattanooga weather in September.

In July, the weather is characterized by warm temperatures, with a minimum of 16°C (61°F) and an average soaring to 26°C (80°F), peaking at a maximum of 37°C (98°F). The month also experiences significant rainfall, averaging 106 mm (4.2 in) across 14 days, coupled with high humidity at 78%. In contrast, October brings a much cooler climate, featuring a minimum temperature that can drop to -2°C (29°F) and an average of 18°C (65°F). While the maximum temperature remains high at 37°C (99°F), the precipitation increases slightly to 133 mm (5.2 in) over 10 days, and humidity drops to 74%. For more insights into the chillier October climate, visit Chattanooga weather in October.

July and November present contrasting weather patterns, showcasing the shift from summer to late autumn. In July, temperatures range from a minimum of 16°C (61°F) to a scorching maximum of 37°C (98°F), with an average of 26°C (80°F). Despite the warmth, July experiences significant humidity at 78% and precipitation over 14 days totaling 106 mm (4.2 in). In contrast, November sees a noticeable drop in temperature, with a minimum of -6°C (21°F) and an average of 10°C (50°F), peaking at 26°C (79°F). While November has less rainfall, with 72 mm (2.8 in) over just 8 days, the humidity remains relatively high at 87%. For more information on weather specifics in November, check out Chattanooga weather in November.

In July, the weather is characterized by warm temperatures, with a minimum of 16°C (61°F) and an average of 26°C (80°F), peaking at a sweltering 37°C (98°F). Humidity is high at 78%, and the month experiences considerable rainfall, totaling 106 mm (4.2 in) over 14 days. In stark contrast, December brings much colder conditions, with temperatures ranging from a frigid -8°C (18°F) to a more temperate maximum of 23°C (73°F), averaging around 8°C (46°F). Despite having slightly more precipitation at 139 mm (5.5 in) over 10 days, December's humidity is slightly higher at 88%. For a closer look at what to expect, you can explore Chattanooga weather in December.

Compare Chattanooga's Climate with Cities Worldwide

Conclusion: What to Expect From July Weather in Chattanooga

As July rolls into Chattanooga, the weather takes a distinct turn, showcasing hot temperatures and higher humidity that stand out from the cooler months. With average highs reaching 37°C (98°F), the summer heat often pushes outdoor activities to the early morning or late evening. Rain becomes a more frequent visitor, with 14 days of scattered showers contributing to a higher overall precipitation total for the month. This muggy climate, with humidity levels around 78%, creates a palpable warmth that makes July feel uniquely balmy compared to the more temperate conditions of spring and fall. For a deeper dive into the variations throughout the year, check out Chattanooga Climate.