Rockford averages 15.7 days a year above 90°F, with June the wettest month at 5.23 in of normal rain. The hottest day on record was 105°F on Jul 7, 2012; the coldest, −31°F on Jan 31, 2019. The single biggest 24-hour rain event recorded was 5.7 in on Aug 14, 1987.
Climate and Average Weather Year Round in Rockford
Year-round temperature
In Rockford, the warmest months are June through September, with average daily highs between 75°F and 84°F. The coldest stretch runs December through February, with highs between 29°F and 34°F and overnight lows reaching 15°F.
Rainfall through the year
Rainfall in Rockford averages 3.1 in per month over the long run. June is the wettest at 5.2 in, while January is the driest at 1.6 in.
Days at 90 °F or hotter
Rockford averages 15.7 days per year at 90 °F or hotter. The hottest year on record saw 49 such days (2012); the coolest just 1 (2004).
Precipitation this year
As of May 28, Rockford has received 10.9 in of precipitation this year — 17% below the long-term normal for this point in the year (13.2 in).