Hamilton County · Tennessee
Chattanooga, TN weather averages
NOAA climate normals for 1991-2020, measured at Chattanooga Ap, 9.9 km from the city centre — month by month temperature, rain and snow.
Quick answer
Chattanooga averages a daily high of 71.7°F and a daily low of 50.1°F across the year, with 52.48 inches of precipitation. July is the warmest month at 90.2°F and January the coldest at 30.7°F.
- Average annual high
- 71.7°FWarmest month July
- Average annual low
- 50.1°FColdest month January
- Precipitation per year
- 52.48 inWettest month November
- Snowfall per year
- 3.9 in58.3 days at or below 32°F
Chattanooga weather month by month
Normal daily high and low, precipitation and snowfall for each month, 1991-2020.
| Month | High °F | Low °F | Precip in | Snow in | Range |
|---|---|---|---|---|---|
| January | 50.2 | 30.7 | 4.91 | 1.7 | 30.7 to 50.2 degrees |
| February | 54.8 | 34 | 4.84 | 0.6 | 34 to 54.8 degrees |
| March | 63.7 | 40.7 | 4.98 | 1.2 | 40.7 to 63.7 degrees |
| April | 72.7 | 48.3 | 3.99 | 0.1 | 48.3 to 72.7 degrees |
| May | 79.9 | 57.3 | 4.1 | 0 | 57.3 to 79.9 degrees |
| June | 87.1 | 65.8 | 4.05 | 0 | 65.8 to 87.1 degrees |
| July | 90.2 | 69.7 | 4.91 | 0 | 69.7 to 90.2 degrees |
| August | 89.6 | 69.2 | 3.48 | 0 | 69.2 to 89.6 degrees |
| September | 83.2 | 61.8 | 4.04 | 0 | 61.8 to 83.2 degrees |
| October | 73.1 | 49.9 | 3.28 | 0 | 49.9 to 73.1 degrees |
| November | 62.3 | 40.2 | 5 | 0 | 40.2 to 62.3 degrees |
| December | 52.1 | 33.1 | 4.9 | 0.3 | 33.1 to 52.1 degrees |
Source: NOAA NCEI, U.S. Climate Normals 1991-2020 — station USW00013882, Chattanooga Ap · rates as published for 1991-2020 normals
How to read Chattanooga climate normals
What a climate normal is, and what it is not.
A normal is the average of thirty years of daily observations at one station — here Chattanooga Ap, 9.9 km from the centre of Chattanooga. It describes a typical year, so any single year will run warmer, cooler, wetter or drier. Readings taken at an airport on the edge of town usually sit a degree or two below a dense downtown on summer nights. Chattanooga sees about 47.7 days a year at or above 90°F and about 81.7 days with a tenth of an inch of precipitation or more.
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Other Chattanooga data on this site.