Clarksville averages 54.1 days a year above 90°F, with May the wettest month at 5.59 in of normal rain. The hottest day on record was 109°F on Jun 29, 2012; the coldest, −20°F on Jan 16, 1982. The single biggest 24-hour rain event recorded was 6.9 in on Sep 26, 2002.
Climate and Average Weather Year Round in Clarksville
Year-round temperature
In Clarksville, the warmest months are June through September, with average daily highs between 84°F and 90°F. The coldest stretch runs December through February, with highs between 47°F and 52°F and overnight lows reaching 28°F.
Rainfall through the year
Rainfall in Clarksville averages 4.5 in per month over the long run. May is the wettest at 5.6 in, while September is the driest at 3.4 in.
Days at 90 °F or hotter
Clarksville averages 54.1 days per year at 90 °F or hotter. The hottest year on record saw 92 such days (2007); the coolest just 4 (2026).
Precipitation this year
As of May 29, Clarksville has received 8.2 in of precipitation this year — 65% below the long-term normal for this point in the year (23.5 in).