Amarillo averages 68.7 days a year above 90°F, with August the wettest month at 2.86 in of normal rain. Across decades of records, Thursdays are 8% rainier than the weekly average. The hottest day on record was 111°F on Jun 26, 2011; the coldest, −12°F on Feb 11, 1986. The single biggest 24-hour rain event recorded was 5.74 in on Jul 7, 2010.
Climate and Average Weather Year Round in Amarillo
Year-round temperature
In Amarillo, the warmest months are June through September, with average daily highs between 84°F and 93°F. The coldest stretch runs December through February, with highs between 52°F and 56°F and overnight lows reaching 25°F.
Rainfall through the year
Rainfall in Amarillo averages 1.6 in per month over the long run. August is the wettest at 2.9 in, while February is the driest at 0.5 in.
Days at 90 °F or hotter
Amarillo averages 68.7 days per year at 90 °F or hotter. The hottest year on record saw 113 such days (2011); the coolest just 17 (2026).
Precipitation this year
As of May 28, Amarillo has received 1.9 in of precipitation this year — 69% below the long-term normal for this point in the year (6.0 in).