Chattanooga, TN
Tennessee · Records since 1879–2026
Records for August 11
🔥 Record High
August 11, 1957
+9° from 90° normal❄ Record Low
August 11, 1967
-15° from 71° normalAll-Time Records — Chattanooga
Top 10 Record Highs — August 11
| # | Temp | Date |
|---|---|---|
| 🏆 | 99°F | August 11, 1957 |
| 2 | 98°F | August 11, 2010 |
| 3 | 98°F | August 11, 1881 |
| 4 | 97°F | August 11, 2007 |
| 5 | 97°F | August 11, 1956 |
| 6 | 97°F | August 11, 1935 |
| 7 | 97°F | August 11, 1899 |
| 8 | 96°F | August 11, 2019 |
| 9 | 96°F | August 11, 1999 |
| 10 | 96°F | August 11, 1943 |
Top 5 Record Lows — August 11
| # | Temp | Date |
|---|---|---|
| 🥶 | 56°F | August 11, 1967 |
| 2 | 57°F | August 11, 1879 |
| 3 | 58°F | August 11, 1969 |
| 4 | 60°F | August 11, 1989 |
| 5 | 60°F | August 11, 1953 |
Heat Wave Summary — Chattanooga
threshold: 95°F (90th percentile of historical Jun–Aug highs)2026 Daily High Temperature vs Normal
Year to date132 of 221 days with data were above the 1991–2020 normal high for their date.
Days ≥ 90°F Per Year
1879–2026Average Daily High by Decade
Full year · complete decades only
Longest Heat Waves — Chattanooga
| # | Dates | Days | Peak | Avg High | Avg Overnight Low |
|---|---|---|---|---|---|
| 🏆 | Aug 4, 2007 – Aug 25, 2007 | 22 | 105°F (Aug 23) | 99°F | 74°F |
| 2 | Aug 15, 1993 – Sep 1, 1993 | 18 | 100°F (Aug 29) | 98°F | 72°F |
| 3 | Jul 20, 1987 – Aug 5, 1987 | 17 | 100°F (Jul 24) | 98°F | 71°F |
| 4 | Jul 4, 1980 – Jul 19, 1980 | 16 | 105°F (Jul 13) | 99°F | 74°F |
| 5 | Jul 18, 1952 – Jul 30, 1952 | 13 | 106°F (Jul 28) | 102°F | 70°F |
| 6 | Jul 17, 1993 – Jul 29, 1993 | 13 | 104°F (Jul 29) | 100°F | 74°F |
| 7 | Jun 18, 1931 – Jun 30, 1931 | 13 | 101°F (Jun 28) | 97°F | 72°F |
| 8 | May 31, 2011 – Jun 12, 2011 | 13 | 98°F (Jun 5) | 96°F | 70°F |
| 9 | Jun 28, 2012 – Jul 8, 2012 | 11 | 107°F (Jun 30) | 101°F | 72°F |
| 10 | Jul 30, 1935 – Aug 9, 1935 | 11 | 104°F (Aug 7) | 99°F | 76°F |
Heat Waves Per Year
Warm Summer Nights (Jun–Aug)
Nights where the overnight low exceeded the 1991–2020 normal low
Above-Normal Summer Nights Per Year
Average June–August Low by Decade
Overnight lows · complete decades only
Precipitation
Actual vs. 1991–2020 full-month and full-season normals
Monthly Precipitation — Last 24 Months
Blue = actual · dashed line = monthly normal
Annual Precipitation Per Year (1970–2026)
Blue = above average · tan = below average · gold = 2026 (partial)
Heavy Rain Days Per Year (≥ 1.0")
Compare year-to-year changes in days with heavy rainfall (≥ 1.0")
Month in Review — July 2026
Average temperature · July 2026
19th-warmest month on record
14th-warmest July of 148 on record
+2.2° vs. 80.5° average (1991–2020)Longest 90°F Streak in July
10 consecutive days with highs of at least 90°F (Jul 1–10, 2026, peaking at 100°F)
The longest July streak since 2025 (1 year). The July record is 31 days, set in 1993.
Average July Temperature by Year
1879–2026 · 2026 highlighted
Warmest Julys on Record
| # | Year | Avg Temp |
|---|---|---|
| 1 | 1993 | 85.2°F |
| 2 | 2016 | 83.9°F |
| 3 | 2010 | 83.5°F |
| 4 | 1954 | 83.4°F |
| 5 | 2020 | 83.4°F |
| 6 | 1977 | 83.4°F |
| 7 | 2024 | 83.2°F |
| 8 | 2025 | 83.2°F |
| 9 | 2022 | 83.1°F |
| 10 | 2011 | 82.9°F |
Warmest Months on Record (Any Month)
| # | Month | Avg Temp |
|---|---|---|
| 1 | August 2007 | 85.7°F |
| 2 | July 1993 | 85.2°F |
| 3 | August 2010 | 84.0°F |
| 4 | July 2016 | 83.9°F |
| 5 | July 2010 | 83.5°F |
| 6 | July 1954 | 83.4°F |
| 7 | July 2020 | 83.4°F |
| 8 | July 1977 | 83.4°F |
| 9 | August 2011 | 83.2°F |
| 10 | July 2024 | 83.2°F |
Nearby Stations — July 2026
How the same month ranked at the closest reporting stations
| Station | Avg Temp | July Rank |
|---|---|---|
| Chattanooga, TN | 82.7°F | 14th of 148 |
| Huntsville, AL | 81.1°F | 34th of 117 |
| Oak Ridge, TN | 80.8°F | 8th of 80 |
| Knoxville, TN | 80.8°F | 16th of 156 |
| Atlanta, GA | 83.0°F | 9th of 148 |