Milwaukee averages 10.1 days a year above 90°F, with June the wettest month at 4.38 in of normal rain. The hottest day on record was 103°F on Aug 1, 1988; the coldest, −26°F on Jan 17, 1982. The single biggest 24-hour rain event recorded was 6.81 in on Aug 6, 1986.
Climate and Average Weather Year Round in Milwaukee
Year-round temperature
In Milwaukee, the warmest months are June through September, with average daily highs between 74°F and 82°F. The coldest stretch runs December through February, with highs between 31°F and 36°F and overnight lows reaching 17°F.
Rainfall through the year
Rainfall in Milwaukee averages 2.9 in per month over the long run. June is the wettest at 4.4 in, while February is the driest at 1.7 in.
Days at 90 °F or hotter
Milwaukee averages 10.1 days per year at 90 °F or hotter. The hottest year on record saw 21 such days (2021); the coolest just 1 (2004).
Precipitation this year
As of May 28, Milwaukee has received 15.0 in of precipitation this year — 18% above the long-term normal for this point in the year (12.7 in).