Chattanooga, TN Weather
Chattanooga hourly forecast: next 24 hours
Today's high of 91°F (33°C) is about 4°F (2°C) above the typical August high of 87°F (31°C).
Current conditions in detail
Chattanooga weather tomorrow (Friday, August 7)
Tomorrow in Chattanooga looks patchy rain nearby, with a high of 88° and an overnight low of 63°. There is a 71% chance of rain - plan accordingly. Winds top out near 4 mph, and the UV index reaches 10 (very high).
Chattanooga 14-day forecast
About the weather in Chattanooga
Located in Tennessee, United States, Chattanooga experiences a humid subtropical climate with hot, humid summers and generally mild winters. Afternoon temperatures peak near 88°F (31°C) in July and dip to about 50°F (10°C) in January, with around 57.4 inches (1458 mm) of precipitation falling across the year.
Chattanooga weather: quick facts
- Hottest month: July - highs near 88°F (31°C)
- Coldest month: January - highs near 50°F (10°C)
- Record high: 99°F (37°C) · Record low: 5°F (-15°C) (2015–2024)
- Wettest month: February (13 rainy days) · Sunniest: June (11.6 h sun/day)
- Climate type: humid subtropical - hot, humid summers and generally mild winters
- Snow: about 2 days a year
Temperatures through the year
The warmest stretch of the year centers on July. Highs average 88°F (31°C) and overnight lows stay near 71°F (22°C). The coolest month is January, with typical highs of 50°F (10°C) and lows around 33°F (1°C). Based on 2015–2024 weather data, temperatures have reached as high as 99°F (37°C) and dropped as low as 5°F (-15°C).
Rain, sun and snow
February is usually the wettest month. It brings about 6.3 inches (160 mm) of rain over 13 days, while October is the driest. June brings the most sunshine, averaging 11.6 hours of sun a day. Snowfall is rare but not unheard of.
Season by season
Spring (March through May)
Spring in Chattanooga brings comfortable warmth, with daytime highs averaging 70°F (21°C) and nights around 50°F (10°C); expect showers on roughly 35 days across the season.
Summer (June through August)
Summer in Chattanooga is hot, with daytime highs averaging 87°F (30°C) and nights around 69°F (21°C); expect showers on roughly 43 days across the season. With the humidity factored in, afternoons often feel hotter than the thermometer reads - run the numbers through the humidity and dew point converter to see why.
Fall (September through November)
Fall in Chattanooga is mild and warm, with daytime highs averaging 73°F (23°C) and nights around 54°F (12°C); expect showers on roughly 25 days across the season.
Winter (December through February)
Winter in Chattanooga is brisk and cold, with daytime highs averaging 53°F (12°C) and nights around 36°F (2°C); expect showers on roughly 34 days across the season.
Average temperatures in Chattanooga by month
| Month | High | Low | Rain days | Precipitation | Sunshine | Humidity |
|---|---|---|---|---|---|---|
| January | 50° | 33° | 10 | 5.3 in | 6.5 h/day | 74% |
| February | 56° | 37° | 13 | 6.3 in | 6.3 h/day | 74% |
| March | 63° | 43° | 13 | 6.1 in | 8.0 h/day | 71% |
| April | 70° | 49° | 11 | 5.1 in | 9.7 h/day | 70% |
| May | 79° | 59° | 11 | 4.1 in | 10.8 h/day | 73% |
| June | 85° | 67° | 14 | 4.1 in | 11.6 h/day | 74% |
| July | 88° | 71° | 16 | 5.0 in | 11.5 h/day | 76% |
| August | 87° | 70° | 14 | 4.5 in | 10.7 h/day | 75% |
| September | 83° | 65° | 8 | 3.8 in | 10.0 h/day | 71% |
| October | 73° | 54° | 8 | 3.7 in | 8.9 h/day | 72% |
| November | 62° | 44° | 9 | 3.7 in | 7.5 h/day | 73% |
| December | 54° | 38° | 11 | 5.6 in | 5.9 h/day | 78% |