Wilmington, OH
Ohio · Records since 1917–2026
Records for August 11
🔥 Record High
August 11, 1944
+18° from 83° normal❄ Record Low
August 11, 1976
-15° from 62° normalAll-Time Records — Wilmington
Top 10 Record Highs — August 11
| # | Temp | Date |
|---|---|---|
| 🏆 | 101°F | August 11, 1944 |
| 2 | 99°F | August 11, 1949 |
| 3 | 99°F | August 11, 1918 |
| 4 | 95°F | August 11, 1923 |
| 5 | 94°F | August 11, 1964 |
| 6 | 94°F | August 11, 1947 |
| 7 | 94°F | August 11, 1940 |
| 8 | 93°F | August 11, 1928 |
| 9 | 92°F | August 11, 1980 |
| 10 | 92°F | August 11, 1941 |
Top 5 Record Lows — August 11
| # | Temp | Date |
|---|---|---|
| 🥶 | 47°F | August 11, 1976 |
| 2 | 48°F | August 11, 1972 |
| 3 | 48°F | August 11, 1967 |
| 4 | 48°F | August 11, 1930 |
| 5 | 48°F | August 11, 1927 |
Heat Wave Summary — Wilmington
threshold: 92°F (90th percentile of historical Jun–Aug highs)2026 Daily High Temperature vs Normal
Year to date106 of 222 days with data were above the 1991–2020 normal high for their date.
Days ≥ 90°F Per Year
1917–2026Average Daily High by Decade
Full year · complete decades only
Longest Heat Waves — Wilmington
| # | Dates | Days | Peak | Avg High | Avg Overnight Low |
|---|---|---|---|---|---|
| 🏆 | Jun 18, 1933 – Jul 2, 1933 | 15 | 102°F (Jun 22) | 97°F | 63°F |
| 2 | Jul 19, 1940 – Jul 31, 1940 | 13 | 102°F (Jul 30) | 96°F | 69°F |
| 3 | Jul 6, 1936 – Jul 17, 1936 | 12 | 109°F (Jul 14) | 102°F | 68°F |
| 4 | Jun 28, 1949 – Jul 9, 1949 | 12 | 100°F (Jul 5) | 96°F | 68°F |
| 5 | Aug 4, 1918 – Aug 14, 1918 | 11 | 103°F (Aug 5) | 98°F | 72°F |
| 6 | Jun 20, 1934 – Jun 30, 1934 | 11 | 103°F (Jun 29) | 97°F | 65°F |
| 7 | Jun 28, 2012 – Jul 8, 2012 | 11 | 101°F (Jul 7) | 96°F | 68°F |
| 8 | Jul 1, 1921 – Jul 11, 1921 | 11 | 100°F (Jul 6) | 95°F | 67°F |
| 9 | Aug 25, 1953 – Sep 4, 1953 | 11 | 100°F (Aug 30) | 97°F | 62°F |
| 10 | Jul 18, 1934 – Jul 27, 1934 | 10 | 111°F (Jul 21) | 104°F | 70°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
58th-warmest month on record
37th-warmest July of 109 on record
+1.1° vs. 73.8° 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 93°F)
The longest July streak since 2020 (6 years). The July record is 20 days, set in 1921.
Average July Temperature by Year
1917–2026 · 2026 highlighted
Warmest Julys on Record
| # | Year | Avg Temp |
|---|---|---|
| 1 | 1934 | 80.7°F |
| 2 | 1936 | 80.2°F |
| 3 | 1949 | 79.5°F |
| 4 | 1921 | 79.0°F |
| 5 | 1931 | 78.5°F |
| 6 | 2011 | 78.3°F |
| 7 | 1930 | 77.8°F |
| 8 | 1999 | 77.8°F |
| 9 | 2012 | 77.7°F |
| 10 | 1955 | 77.6°F |
Warmest Months on Record (Any Month)
| # | Month | Avg Temp |
|---|---|---|
| 1 | July 1934 | 80.7°F |
| 2 | July 1936 | 80.2°F |
| 3 | July 1949 | 79.5°F |
| 4 | July 1921 | 79.0°F |
| 5 | July 1931 | 78.5°F |
| 6 | August 1947 | 78.4°F |
| 7 | July 2011 | 78.3°F |
| 8 | August 1936 | 78.1°F |
| 9 | August 1918 | 78.0°F |
| 10 | July 1930 | 77.8°F |
Nearby Stations — July 2026
How the same month ranked at the closest reporting stations
| Station | Avg Temp | July Rank |
|---|---|---|
| Wilmington, OH | 74.9°F | 37th of 109 |
| Dayton, OH | 76.0°F | 48th of 134 |
| Cincinnati, OH | 77.2°F | 55th of 155 |
| Columbus, OH | 77.7°F | 21st of 149 |