Grand Rapids averages 8.7 days a year above 90°F, with May the wettest month at 4.4 in of normal rain. The hottest day on record was 96°F on Jun 23, 2025; the coldest, −14°F on Jan 24, 2026. The single biggest 24-hour rain event recorded was 2.72 in on Jul 13, 2023.
Climate and Average Weather Year Round in Grand Rapids
Year-round temperature
In Grand Rapids, 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 Grand Rapids averages 3.3 in per month over the long run. May is the wettest at 4.4 in, while February is the driest at 2.1 in.
Days at 90 °F or hotter
Grand Rapids averages 8.7 days per year at 90 °F or hotter. The hottest year on record saw 18 such days (2025); the coolest just 4 (2015).
Precipitation this year
As of May 28, Grand Rapids has received 20.9 in of precipitation this year — 35% above the long-term normal for this point in the year (15.5 in).