Delaware Temperature Records
All-time high and low temperatures recorded in Delaware, with monthly records dating back to 1970.
Key Facts
- Record High: The hottest temperature ever recorded in Delaware is 110°F, set on July 21, 1930.
- Record Low: The coldest temperature ever recorded in Delaware is -17°F, set on January 17, 1893.
- Data Coverage: Based on 57 years of data from 148 NOAA weather stations.
Related Analysis
All-Time Record High
110°F
July 21, 1930
Official NOAA Record
All-Time Record Low
-17°F
January 17, 1893
Official NOAA Record
Monthly Temperature Records
| Month | Record High | Record Low |
|---|---|---|
| January | 77°F(2002) | -15°F(1984) |
| February | 86°F(1997) | -15°F(1979) |
| March | 89°F(1998) | 1°F(1984) |
| April | 97°F(1990) | 14°F(1982) |
| May | 98°F(1991) | 25°F(2008) |
| June | 104°F(1984) | 35°F(1993) |
| July | 105°F(1983) | 41°F(1988) |
| August | 103°F(1975) | 42°F(1976) |
| September | 100°F(1983) | 32°F(2006) |
| October | 98°F(2019) | 21°F(1974) |
| November | 85°F(1974) | 9°F(1989) |
| December | 77°F(1991) | -7°F(1983) |
Snow Records
Find the snowiest days on record for any Delaware city
More State Records
Temperature Analysis
RecordsHottest Temperatures Ever Recorded in Every US StateAll 50 state record highs ranked — Death Valley, the Dust Bowl, and the 2021 heat dome.RecordsColdest Temperatures Ever Recorded in Every US StateAll 50 states ranked from −80°F in Alaska to +15°F in Hawaii.Climate ForecastEl Niño 2026: What Every US Region Should Expect85% likely by late 2026. Region-by-region impact analysis from NOAA data.
Look Up Weather for Any Date
Check the weather on birthdays, anniversaries, or any date since 1970
Explore Delaware Weather History