Aurora averages 40.1 days a year above 90°F, with May the wettest month at 2.29 in of normal rain. The hottest day on record was 104°F on Jun 26, 1994; the coldest, −25°F on Dec 22, 1990. The single biggest 24-hour rain event recorded was 3.88 in on Sep 12, 2013.
Climate and Average Weather Year Round in Aurora
Year-round temperature
In Aurora, the warmest months are June through September, with average daily highs between 80°F and 90°F. The coldest stretch runs December through February, with highs between 46°F and 48°F and overnight lows reaching 18°F.
Rainfall through the year
Rainfall in Aurora averages 1.3 in per month over the long run. May is the wettest at 2.3 in, while January is the driest at 0.5 in.
Days at 90 °F or hotter
Aurora averages 40.1 days per year at 90 °F or hotter. The hottest year on record saw 67 such days (2012); the coolest just 15 (2009).
Precipitation this year
As of May 28, Aurora has received 0.9 in of precipitation this year — 84% below the long-term normal for this point in the year (5.8 in).