Wilmington, OH
Ohio · Records since 1917–2026
Records for August 16
🔥 Record High
August 16, 1944
+16° from 83° normal❄ Record Low
August 16, 1979
-19° from 61° normalAll-Time Records — Wilmington
Top 10 Record Highs — August 16
| # | Temp | Date |
|---|---|---|
| 🏆 | 99°F | August 16, 1944 |
| 2 | 96°F | August 16, 1940 |
| 3 | 96°F | August 16, 1937 |
| 4 | 94°F | August 16, 1965 |
| 5 | 94°F | August 16, 1930 |
| 6 | 94°F | August 16, 1922 |
| 7 | 94°F | August 16, 1918 |
| 8 | 93°F | August 16, 1988 |
| 9 | 93°F | August 16, 1939 |
| 10 | 93°F | August 16, 1932 |
Top 5 Record Lows — August 16
| # | Temp | Date |
|---|---|---|
| 🥶 | 42°F | August 16, 1979 |
| 2 | 45°F | August 16, 1976 |
| 3 | 45°F | August 16, 1929 |
| 4 | 46°F | August 16, 1927 |
| 5 | 47°F | August 16, 2004 |
Heat Wave Summary — Wilmington
threshold: 92°F (90th percentile of historical Jun–Aug highs)2026 Daily High Temperature vs Normal
Year to date108 of 227 days with data were above the 1991–2020 normal high for their date.
Average 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 |