Garden Grove averages 25.9 days a year above 90°F, with February the wettest month at 3.16 in of normal rain. The hottest day on record was 114°F on Jul 6, 2018; the coldest, 16°F on Jan 12, 1989. The single biggest 24-hour rain event recorded was 3.47 in on Dec 6, 1997.
Climate and Average Weather Year Round in Garden Grove
Year-round temperature
In Garden Grove, the warmest months are July through October, with average daily highs between 79°F and 85°F. The coldest stretch runs December through February, with highs between 68°F and 69°F and overnight lows reaching 48°F.
Rainfall through the year
Rainfall in Garden Grove averages 1.0 in per month over the long run. February is the wettest at 3.2 in, while August is the driest at 0.0 in.
Days at 90 °F or hotter
Garden Grove averages 25.9 days per year at 90 °F or hotter. The hottest year on record saw 52 such days (2015); the coolest just 10 (2001).
Precipitation this year
As of May 29, Garden Grove has received 4.9 in of precipitation this year — 45% below the long-term normal for this point in the year (8.8 in).