Last updated: February 24, 2025
January in Chattanooga, United States presents a dynamic weather profile, characterized by a maximum temperature reaching 24°C (75°F) and an average of 6°C (43°F). While winter chills can plunge temperatures as low as -13°C (9°F), the month also witnesses notable precipitation, totaling 99 mm (3.9 in) over approximately 10 days. With humidity levels often hovering around 87%, residents can expect a blend of cold, damp conditions, making it essential to prepare for variable weather patterns throughout the month.
In Chattanooga, Tennessee, January presents a chilly winter embrace, showcasing a wide range of temperatures that can vary dramatically. The month begins with average lows dipping to a brisk -13°C (9°F), while the afternoons can warm up to a pleasant 24°C (75°F), reflecting a significant daytime warming trend. On average, temperatures hover around 6°C (43°F), hinting at the potential for mild sunny days amidst the colder spells. As the month progresses, the coldest nights gradually give way to slightly milder conditions typical of early spring, laying the groundwork for February's even warmer averages. This dynamic shift sets the stage for a smooth transition into the invigorating temperatures of the following months, highlighting the region's distinctive seasonal rhythm.
In January, Chattanooga experiences a moderate precipitation amount of 99 mm (3.9 in), falling over approximately 10 days. This sets the stage for a wetter February, where precipitation spikes to 171 mm (6.7 in)—the highest of the year—indicating a significant increase in rainy days. Following January's relatively dry trend, March and April maintain similar levels of moisture, with both months receiving around 169 mm (6.7 in) and 156 mm (6.2 in), respectively. This early winter pattern suggests a gradual transition into spring, characterized by higher rainfall totals and more frequent precipitation days. Overall, January serves as a pivot point in Chattanooga's climatic rhythm, leading into a wetter and more dynamic late winter and early spring season.
In Chattanooga, January ushers in a month characterized by high humidity levels, typically around 87%, a trend that surprisingly stays consistent into February. As spring approaches, March sees a slight dip to 85%, marking the beginning of a gradual decline. By April, humidity falls to 82% and continues this downward trajectory into the summer months, reaching its lowest point of 67% in August. This relief from moisture is short-lived, as humidity levels rebound in the fall, climbing back to 87% by November and peaking again at 88% in December. This cyclical pattern highlights the city’s humid subtropical climate, where high humidity reigns strong at both the beginning and end of the year, offering a stark contrast to the drier mid-year months.
In January, residents of Chattanooga experience a moderate UV Index of 4, allowing for up to 30 minutes of sun exposure before risking skin damage. As winter gives way to early spring, the UV Index steadily climbs; February already jumps to 6, indicating a high exposure category with a reduced burn time of 25 minutes. The trend intensifies as spring approaches, with March and April featuring very high UV readings of 8 and 10, respectively, where safe sun exposure diminishes to just 15 minutes. The peak of summer registers an extreme UV Index of 11 from May to July, pushing burn times down to a mere 10 minutes. As the seasons shift, the index gradually declines from August through December, reminding us of the importance of sun safety year-round. For more details on UV exposure trends, visit Chattanooga UV Index.
UV Risk Categories
In Chattanooga, January shines with a modest 146 hours of sunshine, setting the tone for the year ahead. As winter transitions to spring, February witnesses a slight uptick to 153 hours, hinting at brighter days. However, the real sunshine spectacle begins in March, with 217 hours, as daylight hours expand significantly. The warmth of April and May brings a delightful surge, reaching 265 and 302 hours, respectively, marking the peak of the spring season. The golden glow persists into the summer months, with July basking in an impressive 317 hours, the highest of the year. Even as summer gives way to autumn, the sun remains generous, especially in August and September with 305 and 276 hours. Though December concludes the year with a drop to 168 hours, the overall trend confirms Chattanooga as a city that consistently welcomes the sun, benefiting from a vibrant tapestry of light throughout the seasons.
In Chattanooga, January offers a 36% chance of sunny weather, which is relatively modest compared to the sunnier months that follow. While the likelihood of sunshine slightly increases in February to 38%, it remains lower than the averages seen in April and November, where the chances soar to 52% and 57%, respectively. Interestingly, the sunny weather trend appears to fluctuate throughout the year, with early spring and late autumn displaying more favorable conditions. This data suggests that while January may not be the sunniest month, the arrival of warmer days in spring provides a welcome boost to those seeking sunshine.
In Chattanooga, January marks the start of the year with 10 hours of daylight, a duration that remains consistent into February. As spring approaches, daylight begins to elongate, reaching 11 hours in March and further expanding to 13 hours by April. The peak of summer brings 14 hours of sunlight from May through July, offering ample time for outdoor activities. However, as summer fades into autumn, the daylight gradually diminishes, returning to 13 hours in August and then tapering down to 12 hours in September. The decline continues, with daylight returning to 10 hours in November and concluding at 9 hours in December. This rhythmic pattern of daylight duration highlights the subtle seasonal shifts in Chattanooga, making each month a unique experience of nature’s cycles.
In Chattanooga, January ushers in mild winds with an average speed of 2.5 m/s (6 mph), setting the stage for a slightly breezy winter month. This mesmeric chill gradually intensifies as the season progresses, with wind speeds inching up to 2.7 m/s (6 mph) in February and peaking at 2.8 m/s (6 mph) in March before the winds begin to drop again. As spring approaches, the averages stabilize, reflecting a gentle fluctuation with April's winds returning to 2.5 m/s (5 mph). Interestingly, as summer unfolds, the winds soften, reaching their lowest in July at 1.8 m/s (4 mph), creating a tranquil atmosphere. However, come November, the winds gently rejuvenate, signaling the transition towards winter once again. This dance of wind speeds throughout the year highlights Chattanooga's dynamic climate, offering a blend of serene corners and brisk moments that keep the heart of winter vibrant.
The weather in Chattanooga changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of January'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.
January typically experiences colder temperatures, with a minimum of -13°C (9°F) and an average of 6°C (43°F), while February sees a slight warming trend, with temperatures ranging from a minimum of -7°C (20°F) and an average of 9°C (48°F). Additionally, February is marked by increased precipitation, totaling 171 mm (6.7 in) over 14 days compared to January's 99 mm (3.9 in) over 10 days. Humidity remains constant at 87% for both months, contributing to the overall dampness in the air. For more specific details on February's weather, check out Chattanooga weather in February.
January and March present a noticeable transition in weather conditions. January features a wider temperature range, with lows plummeting to -13°C (9°F) and highs reaching up to 24°C (75°F), whereas March shows a milder minimum temperature of -6°C (22°F) and a warmer maximum of 29°C (84°F). Precipitation is more frequent in March, totaling 169 mm (6.7 in) over 13 days compared to January's 99 mm (3.9 in) over 10 days. Despite a slight decrease in humidity, which averages 87% in January and 85% in March, the overall trend leans towards a more temperate climate in March. For a more detailed look at weather specifics, check out Chattanooga weather in March.
In January, temperatures in Chattanooga range from a chilly -13°C (9°F) to a mild 24°C (75°F), with an average of 6°C (43°F). The month experiences significant precipitation, totaling 99 mm (3.9 in) over about 10 days, and humidity levels are relatively high at 87%. In contrast, April brings a more comfortable climate, with temperatures ranging from -1°C (30°F) to a warm 30°C (87°F), averaging 16°C (60°F). This month sees increased rainfall of 156 mm (6.2 in), also over 10 days, but with slightly lower humidity at 82%. For more detailed information on April weather patterns, check out Chattanooga weather in April.
In January, the weather is characterized by colder temperatures, with a minimum of -13°C (9°F) and an average of 6°C (43°F), climbing to a maximum of 24°C (75°F). The month sees significant precipitation of 99 mm (3.9 in) over approximately 10 days, combined with high humidity at 87%. In contrast, May brings much warmer weather, starting from a minimum of 4°C (39°F) and averaging 21°C (70°F), with maximum temperatures reaching up to 34°C (93°F). The precipitation in May is slightly lower at 96 mm (3.8 in) over the same number of days, but the humidity remains relatively high at 83%. For more details on the pleasant weather in May, you can explore Chattanooga weather in May.
In January, the weather is notably colder, with temperatures ranging from a chilly -13°C (9°F) to a mild 24°C (75°F), and an average of about 6°C (43°F). The month experiences significant humidity at 87%, with precipitation totaling 99 mm (3.9 in) over approximately 10 days. In contrast, June brings much warmer temperatures, with minimums of 11°C (51°F) and maximums reaching 34°C (94°F), leading to a comfortable average of 24°C (76°F). Although June sees slightly more rainfall at 120 mm (4.7 in) over 13 days, the humidity is somewhat lower at 82%. For more detailed information about the weather in June, you can visit Chattanooga weather in June.
In January, the weather is significantly colder with temperatures ranging from a minimum of -13°C (9°F) to a maximum of 24°C (75°F), and an average of 6°C (43°F). The month sees about 99 mm (3.9 inches) of precipitation over 10 days, accompanied by high humidity at 87%. In contrast, July brings much warmer temperatures, with a minimum of 16°C (61°F), an average of 26°C (80°F), and a maximum reaching 37°C (98°F). During this month, precipitation increases slightly to 106 mm (4.2 inches) over 14 days, and the humidity, while still high, is lower at 78%. For more details on July weather, visit Chattanooga weather in July.
In January, Chattanooga experiences cooler temperatures, with a minimum of -13°C (9°F) and a maximum of 24°C (75°F), while averaging around 6°C (43°F). The month sees an average of 99 mm (3.9 in) of precipitation over approximately 10 days, contributing to a high humidity level of 87%. In contrast, August brings much warmer conditions, where temperatures range from a minimum of 15°C (60°F) to a maximum of 35°C (96°F), with an average temperature of 26°C (78°F). Precipitation increases slightly to 121 mm (4.8 in) over about 14 days, accompanied by a drop in humidity to 67%. For more specific details about August weather patterns, you can refer to Chattanooga weather in August.
January and September present stark contrasts in weather patterns. In January, temperatures can drop as low as -13°C (9°F), while the average hovers around a chilly 6°C (43°F), peaking at a comfortable 24°C (75°F). Precipitation is significant, totaling 99 mm (3.9 in) over about 10 days, with a high humidity level of 87% adding to the wintry feel.
In contrast, September warms up considerably, with temperatures ranging from a minimum of 9°C (48°F) to an average of 24°C (75°F), and soaring to a maximum of 37°C (98°F) on particularly hot days. Rainfall slightly increases to 106 mm (4.2 in) but occurs over just 8 days, and humidity drops to a more comfortable 64%. For more details about the weather during this month, you can visit Chattanooga weather in September.
In January, the weather in Chattanooga can be quite cold, with temperatures ranging from a chilling -13°C (9°F) to a milder 24°C (75°F), creating an average temperature of around 6°C (43°F). During this month, the area experiences about 99 mm (3.9 in) of precipitation over 10 days, coupled with a high humidity level of 87%.
In contrast, October brings more moderate conditions, with temperatures ranging from -2°C (29°F) at night to a warm 37°C (99°F) during the day, yielding an average of 18°C (65°F). Precipitation increases slightly to 133 mm (5.2 in), also spread over 10 days, but humidity drops to a more comfortable 74%. For a detailed look at what to expect, you can visit Chattanooga weather in October.
In comparing January and November weather, January tends to be colder overall, with average temperatures ranging from a minimum of -13°C (9°F) to a maximum of 24°C (75°F), while November offers milder conditions, with temperatures varying from -6°C (21°F) to 26°C (79°F). Both months experience high humidity levels of 87%, but January typically sees more precipitation, totaling 99 mm (3.9 in) over about 10 days, compared to November's 72 mm (2.8 in) over 8 days. The transition from January's chill to November's relative warmth reflects a notable shift in seasonal weather patterns, making November a more favorable month for outdoor activities. For more details, check out Chattanooga weather in November.
In December, the weather in Chattanooga sees slightly milder temperatures compared to January, with an average of 8°C (46°F) and a minimum of -8°C (18°F), while January experiences an average of 6°C (43°F) and dips to -13°C (9°F). Precipitation is also higher in December, with 139 mm (5.5 in) compared to January's 99 mm (3.9 in), although both months receive rain on approximately 10 days. Humidity levels remain similar, with December at 88% and January at 87%. For more detailed information, check out Chattanooga weather in December.
In January, Chattanooga experiences some of its coldest temperatures, with a noticeable dip compared to the milder months preceding and following it. The average chill, coupled with relatively high humidity at 87%, creates a crisp atmosphere that can feel quite brisk. While the city is not excessively wet this month, with about 10 precipitation days, any rain or snow can add to the icy landscape. The stark contrast between the maximum and minimum temperatures underscores January's unique character within Chattanooga's yearly climate. To explore more about the yearly variations in weather, visit Chattanooga Climate.