Maryland · county areal climate 1951–2025
St. Mary's County, MD
A 57.8°F / 44.9" normal · 2025 ran +-0°F vs normal.
2026 so far · through Jul 9: This area is running
+0.1°F (54.3°F) vs the 1996–2025 to-date normal — the
19th warmest start of 76 years. Precipitation
60% of normal.
U.S. year-to-date → Normal (1996–2025)
57.8°F
annual mean · 44.9" precipitation
2025 vs Normal
+-0°F
57.8°F · 41.1" (92% of normal)
Warmest Year
59.5°F
2012 · coldest 54.3°F (1958)
Wettest Year
68.2in
2018 · driest 30.3" (2007)
Hottest Day
102.3°F
Jul 8 · 2012
Coldest Day
-3.9°F
Jan 22 · 1985
Biggest Rain Day
7.54in
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.