Garden Grove, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Garden Grove, a city in Decatur County, Iowa.
This Afternoon
68°F
Showers And Thunderstorms Likely
Showers and thunderstorms likely before 4pm, then a chance of showers and thunderstorms between 4pm and 5pm, then showers and thunderstorms likely. Mostly cloudy. High near 68, with temperatures falling to around 61 in the afternoon. South wind around 13 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Garden Grove
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 68°F | Showers And Thunderstorms Likely | 13 mph S | 67% |
| Tonight | 46°F | Chance Rain Showers | 8 to 12 mph W | 53% |
| Wednesday | 53°F | Mostly Cloudy | 12 to 15 mph W | 11% |
| Wednesday Night | 42°F | Mostly Cloudy | 10 mph W | 4% |
| Thursday | 53°F | Mostly Cloudy then Chance Rain Showers | 10 mph WNW | 31% |
| Thursday Night | 41°F | Mostly Cloudy | 7 mph NNW | 14% |
| Friday | 52°F | Partly Sunny | 3 to 8 mph N | 7% |
| Friday Night | 35°F | Mostly Cloudy | 2 mph N | 0% |
| Saturday | 56°F | Partly Sunny | 1 to 5 mph WSW | 3% |
| Saturday Night | 37°F | Mostly Clear | 5 mph W | 5% |
| Sunday | 61°F | Sunny | 7 mph W | 3% |
| Sunday Night | 39°F | Mostly Clear | 6 mph SW | 0% |
| Monday | 65°F | Sunny | 6 to 12 mph SW | 0% |
| Monday Night | 42°F | Mostly Clear | 6 mph WNW | 0% |
Forecast source: National Weather Service (api.weather.gov) for Garden Grove (40.827, -93.607). Updated through the day.
Growing snapshot for Garden Grove
Last spring frost
Apr 30
First fall frost
Oct 8
Growing season
161 days
Hardiness zone
5b
More local growing data for Garden Grove: nearby ZIP 50103 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Leon 6 Ese, Ia (5.2 mi from Garden Grove). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.