Baltimore averages 41.1 days a year above 90°F, with July the wettest month at 4.71 in of normal rain. The hottest day on record was 108°F on Jul 22, 2011; the coldest, 3°F on Feb 20, 2015. The single biggest 24-hour rain event recorded was 6.08 in on Oct 29, 2012.
Climate and Average Weather Year Round in Baltimore
Year-round temperature
In Baltimore, the warmest months are June through September, with average daily highs between 80°F and 90°F. The coldest stretch runs December through February, with highs between 44°F and 48°F and overnight lows reaching 30°F.
Rainfall through the year
Rainfall in Baltimore averages 3.6 in per month over the long run. July is the wettest at 4.7 in, while February is the driest at 2.8 in.
Days at 90 °F or hotter
Baltimore averages 41.1 days per year at 90 °F or hotter. The hottest year on record saw 70 such days (2007); the coolest just 6 (2026).
Precipitation this year
As of May 28, Baltimore has received 14.2 in of precipitation this year — 13% below the long-term normal for this point in the year (16.4 in).