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
88°F
Partly Sunny then Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms after 3pm. Partly sunny. High near 88, with temperatures falling to around 86 in the afternoon. West southwest wind around 7 mph. Chance of precipitation is 20%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Garden Grove
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 88°F | Partly Sunny then Slight Chance Showers And Thunderstorms | 7 mph WSW | 23% |
| Tonight | 64°F | Showers And Thunderstorms Likely | 9 mph NNE | 71% |
| Wednesday | 75°F | Showers And Thunderstorms Likely | 9 mph NE | 76% |
| Wednesday Night | 60°F | Showers And Thunderstorms Likely | 3 to 9 mph NE | 55% |
| Thursday | 81°F | Chance Showers And Thunderstorms then Mostly Sunny | 5 mph ENE | 33% |
| Thursday Night | 62°F | Mostly Clear | 3 mph ESE | 4% |
| Friday | 86°F | Sunny | 2 to 6 mph S | 6% |
| Friday Night | 66°F | Mostly Clear | 5 mph S | 14% |
| Saturday | 90°F | Sunny | 5 to 10 mph SSW | 5% |
| Saturday Night | 72°F | Mostly Clear | 13 mph S | 9% |
| Sunday | 92°F | Mostly Sunny | 12 to 15 mph SSW | 9% |
| Sunday Night | 72°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 12 to 15 mph SSW | 17% |
| Monday | 92°F | Slight Chance Showers And Thunderstorms then Mostly Sunny | 12 to 16 mph SSW | 17% |
| Monday Night | 72°F | Chance Showers And Thunderstorms | 12 to 15 mph SSW | 25% |
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 Aug 4, 2026.