Arlington averages 101.9 days a year above 90°F, with October the wettest month at 4.72 in of normal rain. The hottest day on record was 110°F on Sep 4, 2000; the coldest, −1°F on Feb 16, 2021. The single biggest 24-hour rain event recorded was 6.08 in on Mar 19, 2006.
Climate and Average Weather Year Round in Arlington
Year-round temperature
In Arlington, the warmest months are June through September, with average daily highs between 89°F and 96°F. The coldest stretch runs December through February, with highs between 58°F and 62°F and overnight lows reaching 37°F.
Rainfall through the year
Rainfall in Arlington averages 3.0 in per month over the long run. October is the wettest at 4.7 in, while August is the driest at 1.7 in.
Days at 90 °F or hotter
Arlington averages 101.9 days per year at 90 °F or hotter. The hottest year on record saw 131 such days (2011); the coolest just 10 (2026).
Precipitation this year
As of May 28, Arlington has received 15.4 in of precipitation this year — 0% above the long-term normal for this point in the year (15.4 in).