Delaware Climate Data
NOAA 30-year climate normals for all 3 counties.
State Avg Temp
56.4°F
Hottest County
Sussex County
57.2°F avg
Coldest County
New Castle County
54.9°F avg
Wettest County
Kent County
47.6" precip
All Delaware Counties
Data source: NOAA National Centers for Environmental Information (NCEI), U.S. Climate Normals 1991-2020.
Climate normals are 30-year averages of weather variables computed from 1991 to 2020. Station data is aggregated to county level using spatial averaging. Data is informational only — not a substitute for official National Weather Service forecasts or emergency weather warnings.