Chattanooga, TN All-Time Weather Extremes
The most extreme temperature, precipitation, and snowfall ever recorded in Chattanooga, from NOAA daily weather observations.
| Temperature | ||
|---|---|---|
| Record High | 107°F (42°C) | June 30, 2012 and July 1, 2012 |
| Record Low | -9.9°F (-23°C) | January 21, 1985 |
| Lowest High | 15.9°F (-9°C) | January 8, 1970 and December 25, 1983 and February 4, 1996 |
| Highest Low | 80.9°F (27°C) | July 11, 1980 |
| Highest Mean | 91.5°F (33°C) | July 1, 2012 |
| Lowest Mean | 3.5°F (-16°C) | January 21, 1985 |
| Precipitation | ||
| Max in One Calendar Day | 9.49" (241.0 mm) | September 5, 2011 |
| Max in One Month | 16.31" (414.4 mm) | March 1980 |
| Least in One Month | 0.01" (0.3 mm) | August 2011 |
| Max in One Year | 73.72" (1872.4 mm) | 1994 |
| Least in One Year | 35.60" (904.2 mm) | 2016 |
| Snowfall | ||
| Max in One Calendar Day | 18.5" (47.0 cm) | March 13, 1993 |
| Max in One Month | 20.0" (50.8 cm) | March 1993 |
| Max in One Season | 22.7" (57.7 cm) | 1992-93 |
| Max in One Year | 22.7" (57.7 cm) | 1993 |
| Earliest Snow | 0.3" (0.8 cm) | November 16, 1989 |
| Earliest Measurable Snow | 0.3" (0.8 cm) | November 16, 1989 |
| Latest Snow | 1.0" (2.5 cm) | April 7, 1971 |
| Latest Measurable Snow | 1.0" (2.5 cm) | April 7, 1971 |
| Period of Record | ||
| Temperature | January 1, 1970 – August 1, 2026 | |
| Precipitation | January 1, 1970 – August 1, 2026 | |
| Snowfall | January 1, 1970 – August 1, 2026 | |
Note: Records compiled from NOAA GHCN-Daily observations at CHATTANOOGA AP (1 mi from Chattanooga, TN). Quality-flagged readings are excluded. Monthly and annual totals require substantially complete reporting for “least” records.
Shareable Image Version
Frequently Asked Questions
What is the hottest temperature ever recorded in Chattanooga, TN?
The all-time record high in Chattanooga, TN is 107°F (42°C), set on June 30, 2012 and July 1, 2012.
What is the coldest temperature ever recorded in Chattanooga, TN?
The all-time record low in Chattanooga, TN is -9.9°F (-23°C), set on January 21, 1985.
What is the most rain Chattanooga, TN has ever had in one day?
The most precipitation recorded in one calendar day near Chattanooga, TN is 9.49 inches, on September 5, 2011.
What is the biggest snowfall ever recorded in Chattanooga, TN?
The most snow recorded in one calendar day near Chattanooga, TN is 18.5 inches, on March 13, 1993.
Look Up Extremes by ZIP Code
See the all-time weather extremes for any US location
Chattanooga Weather History
Monthly averages, records, and climate data for Chattanooga
Tennessee Weather Extremes
Statewide records and extremes for other Tennessee cities