Hialeah averages 81.2 days a year above 90°F, with September the wettest month at 11.53 in of normal rain. The hottest day on record was 100°F on Jul 1, 1998; the coldest, 28°F on Jan 13, 1981. The single biggest 24-hour rain event recorded was 16.39 in on Apr 25, 1979.
Climate and Average Weather Year Round in Hialeah
Year-round temperature
In Hialeah, the warmest months are June through September, with average daily highs between 88°F and 90°F. The coldest stretch runs December through February, with highs between 76°F and 78°F and overnight lows reaching 59°F.
Rainfall through the year
Rainfall in Hialeah averages 6.1 in per month over the long run. September is the wettest at 11.5 in, while January is the driest at 2.0 in.
Days at 90 °F or hotter
Hialeah averages 81.2 days per year at 90 °F or hotter. The hottest year on record saw 148 such days (1998); the coolest just 8 (2026).
Precipitation this year
As of May 29, Hialeah has received 13.4 in of precipitation this year — 19% below the long-term normal for this point in the year (16.6 in).