Climate of Delaware, USA
Area-weighted average across Delaware. For where people actually live and travel, see the cities below.
Delaware, a subdivision of United States of America, has a seasonal climate on average. Area-weighted monthly temperatures across the whole territory range from 0.9°C / 33.6°F in January to 24.6°C / 76.3°F in July, with rainfall from 77 mm / 3 in to 107 mm / 4.2 in depending on the season (1132 mm / 44.6 in total across the year). See the city listed below for point-value climate at specific locations — these often differ from the area-weighted average, especially in geographically diverse subdivisions.
| Month | Temperature | Rainfall | Matches |
|---|---|---|---|
| January | 0.9°C33.6°F | 94 mm3.7″ | Snowy |
| February | 2°C35.6°F | 77 mm3″ | Snowy |
| March | 6.6°C43.9°F | 106 mm4.2″ | — |
| April | 11.7°C53.1°F | 89 mm3.5″ | — |
| May | 17.1°C62.8°F | 103 mm4.1″ | — |
| June | 21.9°C71.4°F | 92 mm3.6″ | — |
| July | 24.6°C76.3°F | 107 mm4.2″ | — |
| August | 23.8°C74.8°F | 107 mm4.2″ | — |
| September | 20.3°C68.5°F | 100 mm3.9″ | — |
| October | 14°C57.2°F | 84 mm3.3″ | — |
| November | 8.7°C47.7°F | 83 mm3.3″ | — |
| December | 3.7°C38.7°F | 90 mm3.5″ | — |
Frequently asked questions
What is the best time to visit Delaware?
Delaware, United States of America does not have a clear sunny-and-dry window by our cutoffs. The warmest month is July at 24.6°C / 76.3°F, and the driest is February at 77 mm / 3 in — likely your best travel window. For city-level detail, see the cities section below.
What is the climate of Delaware?
Delaware, United States of America has area-weighted monthly average temperatures ranging from 0.9°C / 33.6°F in January to 24.6°C / 76.3°F in July. Annual rainfall averages about 1132 mm / 44.6 in, with the wettest month being July (107 mm / 4.2 in) and the driest February (77 mm / 3 in). Because this is an area average across the whole subdivision, local city values can differ substantially.
What is the hottest month in Delaware?
The hottest month in Delaware is July, with an area-wide average temperature of 24.6°C / 76.3°F.
What is the coldest month in Delaware?
The coldest month in Delaware is January, with an area-wide average temperature of 0.9°C / 33.6°F.
When does it rain most in Delaware?
The wettest month in Delaware is July, averaging about 107 mm / 4.2 in of rainfall. The driest is February with about 77 mm / 3 in.