Garden Grove, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Garden Grove, a city in Decatur County, Iowa.
Today
85°F
Partly Sunny then Slight Chance Rain Showers
A slight chance of rain showers between 3pm and 4pm. Partly sunny. High near 85, with temperatures falling to around 82 in the afternoon. West southwest wind 7 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Garden Grove
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 85°F | Partly Sunny then Slight Chance Rain Showers | 7 to 10 mph WSW | 15% |
| Tonight | 63°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 1 to 7 mph NNW | 69% |
| Sunday | 67°F | Chance Rain Showers then Chance Showers And Thunderstorms | 7 to 10 mph NNE | 47% |
| Sunday Night | 58°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 10 mph NE | 65% |
| Monday | 60°F | Rain Showers Likely | 12 mph NE | 65% |
| Monday Night | 52°F | Chance Rain Showers | 7 to 10 mph NE | 44% |
| Tuesday | 59°F | Slight Chance Rain Showers then Mostly Cloudy | 9 mph NE | 17% |
| Tuesday Night | 46°F | Partly Cloudy | 6 mph NE | 4% |
| Wednesday | 63°F | Mostly Sunny | 5 mph ENE | 2% |
| Wednesday Night | 51°F | Partly Cloudy | 3 mph E | 6% |
| Thursday | 65°F | Slight Chance Rain Showers | 3 mph ESE | 17% |
| Thursday Night | 56°F | Mostly Cloudy then Slight Chance Rain Showers | 2 mph E | 19% |
| Friday | 67°F | Slight Chance Rain Showers then Partly Sunny | 2 to 6 mph E | 19% |
| Friday Night | 56°F | Mostly Cloudy | 3 mph ESE | 11% |
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 Sep 19, 2026.