Knoxville, TN
Tennessee · Records since 1871–2026
Records for August 11
🔥 Record High
August 11, 1900
+10° from 88° normal❄ Record Low
August 11, 1879
-15° from 68° normalAll-Time Records — Knoxville
Top 10 Record Highs — August 11
| # | Temp | Date |
|---|---|---|
| 🏆 | 98°F | August 11, 1900 |
| 2 | 97°F | August 11, 1939 |
| 3 | 97°F | August 11, 1925 |
| 4 | 96°F | August 11, 2010 |
| 5 | 96°F | August 11, 1957 |
| 6 | 96°F | August 11, 1913 |
| 7 | 95°F | August 11, 1983 |
| 8 | 95°F | August 11, 1980 |
| 9 | 95°F | August 11, 1941 |
| 10 | 95°F | August 11, 1935 |
Top 5 Record Lows — August 11
| # | Temp | Date |
|---|---|---|
| 🥶 | 53°F | August 11, 1879 |
| 2 | 57°F | August 11, 1989 |
| 3 | 57°F | August 11, 1967 |
| 4 | 58°F | August 11, 1962 |
| 5 | 58°F | August 11, 1917 |
Heat Wave Summary — Knoxville
threshold: 93°F (90th percentile of historical Jun–Aug highs)2026 Daily High Temperature vs Normal
Year to date139 of 221 days with data were above the 1991–2020 normal high for their date.
Days ≥ 90°F Per Year
1871–2026Average Daily High by Decade
Full year · complete decades only
Longest Heat Waves — Knoxville
| # | Dates | Days | Peak | Avg High | Avg Overnight Low |
|---|---|---|---|---|---|
| 🏆 | Aug 7, 2007 – Aug 29, 2007 | 23 | 102°F (Aug 23) | 96°F | 72°F |
| 2 | Jul 16, 1986 – Jul 30, 1986 | 15 | 98°F (Jul 19) | 96°F | 71°F |
| 3 | Jul 11, 1951 – Jul 24, 1951 | 14 | 98°F (Jul 22) | 95°F | 70°F |
| 4 | Jul 18, 1952 – Jul 30, 1952 | 13 | 103°F (Jul 27) | 98°F | 72°F |
| 5 | Jul 2, 1993 – Jul 14, 1993 | 13 | 100°F (Jul 8) | 96°F | 71°F |
| 6 | Jul 18, 1993 – Jul 29, 1993 | 12 | 100°F (Jul 28) | 97°F | 72°F |
| 7 | Jun 28, 2012 – Jul 8, 2012 | 11 | 105°F (Jun 30) | 99°F | 70°F |
| 8 | Jun 19, 1931 – Jun 29, 1931 | 11 | 101°F (Jun 27) | 97°F | 72°F |
| 9 | Jul 11, 1980 – Jul 21, 1980 | 11 | 101°F (Jul 17) | 96°F | 74°F |
| 10 | Jul 26, 2011 – Aug 5, 2011 | 11 | 99°F (Aug 3) | 96°F | 72°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
22nd-warmest month on record
16th-warmest July of 156 on record
+2.2° vs. 78.6° average (1991–2020)Longest 90°F Streak in July
9 consecutive days with highs of at least 90°F (Jul 1–9, 2026, peaking at 97°F)
Ties the longest July streak since 2025 (1 year). The July record is 29 days, set in 1993.
Average July Temperature by Year
1871–2026 · 2026 highlighted
Warmest Julys on Record
| # | Year | Avg Temp |
|---|---|---|
| 1 | 1993 | 83.0°F |
| 2 | 2025 | 82.2°F |
| 3 | 1980 | 82.1°F |
| 4 | 2010 | 81.8°F |
| 5 | 2011 | 81.8°F |
| 6 | 1954 | 81.7°F |
| 7 | 2016 | 81.7°F |
| 8 | 1986 | 81.4°F |
| 9 | 1981 | 81.3°F |
| 10 | 1934 | 81.2°F |
Warmest Months on Record (Any Month)
| # | Month | Avg Temp |
|---|---|---|
| 1 | August 2007 | 83.2°F |
| 2 | July 1993 | 83.0°F |
| 3 | July 2025 | 82.2°F |
| 4 | July 1980 | 82.1°F |
| 5 | July 2010 | 81.8°F |
| 6 | July 2011 | 81.8°F |
| 7 | July 1954 | 81.7°F |
| 8 | July 2016 | 81.7°F |
| 9 | August 1980 | 81.7°F |
| 10 | August 1995 | 81.5°F |
Nearby Stations — July 2026
How the same month ranked at the closest reporting stations
| Station | Avg Temp | July Rank |
|---|---|---|
| Knoxville, TN | 80.8°F | 16th of 156 |
| Oak Ridge, TN | 80.8°F | 8th of 80 |
| Asheville, NC | 76.4°F | 13th of 134 |
| Bristol-Johnson City, TN | 77.2°F | 15th of 89 |