Green Bay averages 6.3 days a year above 90°F, with June the wettest month at 4.22 in of normal rain. Across decades of records, Thursdays are 11% rainier than the weekly average. The hottest day on record was 99°F on Aug 8, 2001; the coldest, −26°F on Jan 30, 2019. The single biggest 24-hour rain event recorded was 4.5 in on Jul 8, 2000.
Climate and Average Weather Year Round in Green Bay
Year-round temperature
In Green Bay, the warmest months are June through September, with average daily highs between 71°F and 80°F. The coldest stretch runs December through February, with highs between 25°F and 31°F and overnight lows reaching 9°F.
Rainfall through the year
Rainfall in Green Bay averages 2.7 in per month over the long run. June is the wettest at 4.2 in, while February is the driest at 1.1 in.
Days at 90 °F or hotter
Green Bay averages 6.3 days per year at 90 °F or hotter. The hottest year on record saw 20 such days (2012); the coolest just 1 (2003).
Precipitation this year
As of May 28, Green Bay has received 3.9 in of precipitation this year — 64% below the long-term normal for this point in the year (10.6 in).