Waco averages 95.1 days a year above 90°F, with May the wettest month at 4.39 in of normal rain. The hottest day on record was 112°F on Sep 5, 2000; the coldest, −4°F on Dec 23, 1989. The single biggest 24-hour rain event recorded was 9.32 in on Oct 24, 2015.
Climate and Average Weather Year Round in Waco
Year-round temperature
In Waco, the warmest months are June through September, with average daily highs between 89°F and 95°F. The coldest stretch runs December through February, with highs between 59°F and 62°F and overnight lows reaching 36°F.
Rainfall through the year
Rainfall in Waco averages 3.1 in per month over the long run. May is the wettest at 4.4 in, while July is the driest at 1.9 in.
Days at 90 °F or hotter
Waco averages 95.1 days per year at 90 °F or hotter. The hottest year on record saw 126 such days (2011); the coolest just 41 (2021).
Precipitation this year
As of May 29, Waco has received 3.6 in of precipitation this year — 78% below the long-term normal for this point in the year (16.2 in).