Dayton, OH
Ohio · Records since 1893–2026
Records for August 11
🔥 Record High
August 11, 1900
+13° from 85° normal❄ Record Low
August 11, 1962
-15° from 65° normalAll-Time Records — Dayton
Top 10 Record Highs — August 11
| # | Temp | Date |
|---|---|---|
| 🏆 | 98°F | August 11, 1900 |
| 2 | 96°F | August 11, 1944 |
| 3 | 95°F | August 11, 1988 |
| 4 | 94°F | August 11, 1964 |
| 5 | 93°F | August 11, 2002 |
| 6 | 93°F | August 11, 1947 |
| 7 | 93°F | August 11, 1911 |
| 8 | 93°F | August 11, 1896 |
| 9 | 93°F | August 11, 1893 |
| 10 | 92°F | August 11, 2021 |
Top 5 Record Lows — August 11
| # | Temp | Date |
|---|---|---|
| 🥶 | 50°F | August 11, 1962 |
| 2 | 51°F | August 11, 1967 |
| 3 | 52°F | August 11, 1972 |
| 4 | 53°F | August 11, 2008 |
| 5 | 53°F | August 11, 1919 |
Heat Wave Summary — Dayton
threshold: 92°F (90th percentile of historical Jun–Aug highs)2026 Daily High Temperature vs Normal
Year to date101 of 221 days with data were above the 1991–2020 normal high for their date.
Days ≥ 90°F Per Year
1893–2026Average Daily High by Decade
Full year · complete decades only
Longest Heat Waves — Dayton
| # | Dates | Days | Peak | Avg High | Avg Overnight Low |
|---|---|---|---|---|---|
| 🏆 | Jul 6, 1936 – Jul 17, 1936 | 12 | 106°F (Jul 14) | 101°F | 75°F |
| 2 | Jun 29, 1897 – Jul 10, 1897 | 12 | 104°F (Jul 4) | 99°F | 71°F |
| 3 | Sep 5, 1897 – Sep 16, 1897 | 12 | 101°F (Sep 14) | 98°F | 57°F |
| 4 | Jul 20, 1901 – Jul 30, 1901 | 11 | 108°F (Jul 22) | 100°F | 69°F |
| 5 | Aug 9, 1988 – Aug 18, 1988 | 10 | 102°F (Aug 17) | 96°F | 72°F |
| 6 | Jul 13, 1895 – Jul 22, 1895 | 10 | 99°F (Jul 19) | 95°F | 68°F |
| 7 | Aug 26, 1953 – Sep 4, 1953 | 10 | 99°F (Sep 2) | 95°F | 68°F |
| 8 | Jul 21, 1940 – Jul 30, 1940 | 10 | 98°F (Jul 29) | 95°F | 76°F |
| 9 | Jul 18, 1934 – Jul 26, 1934 | 9 | 105°F (Jul 21) | 100°F | 76°F |
| 10 | Aug 4, 1900 – Aug 12, 1900 | 9 | 99°F (Aug 10) | 97°F | 65°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
68th-warmest month on record
48th-warmest July of 134 on record
+1.2° vs. 74.7° average (1991–2020)Longest 90°F Streak in July
4 consecutive days with highs of at least 90°F (Jul 1–4, 2026, peaking at 94°F)
The longest July streak since 2020 (6 years). The July record is 19 days, set in 1901.
Average July Temperature by Year
1893–2026 · 2026 highlighted
Warmest Julys on Record
| # | Year | Avg Temp |
|---|---|---|
| 1 | 1934 | 81.6°F |
| 2 | 1936 | 81.4°F |
| 3 | 1901 | 80.7°F |
| 4 | 2012 | 80.1°F |
| 5 | 1921 | 79.9°F |
| 6 | 2011 | 79.8°F |
| 7 | 1916 | 79.4°F |
| 8 | 1931 | 78.9°F |
| 9 | 2020 | 78.7°F |
| 10 | 1897 | 78.5°F |
Warmest Months on Record (Any Month)
| # | Month | Avg Temp |
|---|---|---|
| 1 | July 1934 | 81.6°F |
| 2 | July 1936 | 81.4°F |
| 3 | July 1901 | 80.7°F |
| 4 | July 2012 | 80.1°F |
| 5 | July 1921 | 79.9°F |
| 6 | August 1947 | 79.9°F |
| 7 | July 2011 | 79.8°F |
| 8 | July 1916 | 79.4°F |
| 9 | August 1900 | 79.2°F |
| 10 | August 1936 | 79.2°F |
Nearby Stations — July 2026
How the same month ranked at the closest reporting stations
| Station | Avg Temp | July Rank |
|---|---|---|
| Dayton, OH | 76.0°F | 48th of 134 |
| Wilmington, OH | 74.9°F | 37th of 109 |
| Cincinnati, OH | 77.2°F | 55th of 155 |
| Columbus, OH | 77.7°F | 21st of 149 |
| Fort Wayne, IN | 75.1°F | 30th of 125 |