Delaware · county areal climate 1951–2025
New Castle County, DE
A 55.6°F / 45.9" normal · 2025 ran -0.4°F vs normal.
2026 so far · through Jul 10: This area is running
+0.4°F (52.2°F) vs the 1996–2025 to-date normal — the
15th warmest start of 76 years. Precipitation
74% of normal.
U.S. year-to-date → Normal (1996–2025)
55.6°F
annual mean · 45.9" precipitation
2025 vs Normal
-0.4°F
55.2°F · 39.0" (85% of normal)
Warmest Year
57.4°F
2012 · coldest 51.7°F (1958)
Wettest Year
63.8in
2018 · driest 27.5" (1965)
Hottest Day
102.9°F
Jul 23 · 2011
Coldest Day
-7.7°F
Jan 22 · 1985
Biggest Rain Day
6.94in
Aug 28 · 2011
Record
1951–2025
75 complete years · NOAA nClimGrid
—— normal temperature (°F) · ▮ normal precipitation (in) · 1996–2025
Areal
nClimGrid averages (NOAA/NCEI) over the whole area — an average across the region, not a single station. Separate from the
station records.