Wilmington, DE
Delaware · Records since 1894–2026
☀️ 80°F
Feels like 87°
Currently in Wilmington
As of 8:00 PM EDT
Records for July 28
🔥 Record High
101°F
July 28, 1894
+15° from 86° normal❄ Record Low
53°F
July 28, 1962
-15° from 68° normal
🌞 Normal high: 86°F 🌑 Normal low: 68°F 1991–2020 normals
All-Time Records — Wilmington
107°F
Hottest Day Ever
Aug 7, 1918
-15°F
Coldest Day Ever
Feb 9, 1934
8.29"
Wettest Day Ever
Sep 16, 1999
22.0"
Most Snow in One Day
Jan 7, 1996
Top 10 Record Highs — July 28
| # | Temp | Date |
|---|---|---|
| 🏆 | 101°F | July 28, 1894 |
| 2 | 98°F | July 28, 1941 |
| 3 | 98°F | July 28, 1940 |
| 4 | 97°F | July 28, 1949 |
| 5 | 96°F | July 28, 1999 |
| 6 | 96°F | July 28, 1954 |
| 7 | 95°F | July 28, 2023 |
| 8 | 94°F | July 28, 1993 |
| 9 | 94°F | July 28, 1963 |
| 10 | 94°F | July 28, 1955 |
Top 5 Record Lows — July 28
| # | Temp | Date |
|---|---|---|
| 🥶 | 53°F | July 28, 1962 |
| 2 | 54°F | July 28, 1920 |
| 3 | 55°F | July 28, 1946 |
| 4 | 55°F | July 28, 1937 |
| 5 | 56°F | July 28, 1977 |
Heat Wave Summary — Wilmington
threshold: 92°F (90th percentile of historical Jun–Aug highs)4.2
Avg heat wave length
days (historical)
97°
Avg peak temp
during heat waves
17
Dangerous nights 2026
Overnights ≥ 70°F
2
Heat waves 2026
so far
2026 Daily High Temperature vs Normal
Year to date
Above normal
Below normal
98 of 207 days with data were above the 1991–2020 normal high for their date.
Days ≥ 90°F Per Year
1894–202623
2026 so far
21
Avg/year 1970–2025
29
Avg/year (last 10 complete)
59
Most in a year (1895)
Average Daily High by Decade
Full year · complete decades only
Longest Heat Waves — Wilmington
| # | Dates | Days | Peak | Avg High | Avg Overnight Low |
|---|---|---|---|---|---|
| 🏆 | Aug 3, 1896 – Aug 13, 1896 | 11 | 103°F (Aug 6) | 99°F | 75°F |
| 2 | Aug 26, 1953 – Sep 5, 1953 | 11 | 101°F (Aug 30) | 97°F | 69°F |
| 3 | Jul 25, 1894 – Aug 3, 1894 | 10 | 101°F (Jul 28) | 96°F | 73°F |
| 4 | Jul 12, 1894 – Jul 21, 1894 | 10 | 98°F (Jul 13) | 95°F | 72°F |
| 5 | Aug 5, 1895 – Aug 12, 1895 | 8 | 101°F (Aug 11) | 96°F | 71°F |
| 6 | Aug 3, 1930 – Aug 10, 1930 | 8 | 98°F (Aug 5) | 95°F | 71°F |
| 7 | Jul 19, 1987 – Jul 26, 1987 | 8 | 98°F (Jul 21) | 95°F | 73°F |
| 8 | Jul 7, 1993 – Jul 14, 1993 | 8 | 98°F (Jul 8) | 96°F | 76°F |
| 9 | Jul 28, 2002 – Aug 4, 2002 | 8 | 98°F (Aug 1) | 95°F | 72°F |
| 10 | Jul 25, 1940 – Jul 31, 1940 | 7 | 102°F (Jul 31) | 97°F | 71°F |
Heat Waves Per Year
Warm Summer Nights (Jun–Aug)
Nights where the overnight low exceeded the 1991–2020 normal low
30
2026 so far
above-normal nights
44.4
Avg / summer
1970–2020
67
Most in a summer
1973
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
22.50"
2026 YTD
Normal: 25.67"
-3.17"
6.20"
July so far
July normal: 4.41"
+1.79"
9.55"
Summer so far
Summer normal: 13.06"
-3.51"
4
2026 heavy rain days
Days with ≥ 1.0"
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")