Reinbeck, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Reinbeck, a city in Grundy County, Iowa.
Overnight
66°F
Showers And Thunderstorms Likely
Showers and thunderstorms likely before 5am, then a chance of showers and thunderstorms. Cloudy. Low around 66, with temperatures rising to around 68 overnight. Southeast wind around 8 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast for Reinbeck
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 66°F | Showers And Thunderstorms Likely | 8 mph SE | 63% |
| Saturday | 79°F | Showers And Thunderstorms Likely | 8 mph SW | 68% |
| Saturday Night | 60°F | Chance Showers And Thunderstorms | 12 mph N | 37% |
| Sunday | 66°F | Chance Rain Showers then Chance Drizzle | 12 to 15 mph NE | 39% |
| Sunday Night | 54°F | Chance Rain Showers | 14 mph ENE | 43% |
| Monday | 62°F | Chance Rain Showers | 15 mph NE | 43% |
| Monday Night | 49°F | Chance Rain Showers | 8 to 13 mph NE | 40% |
| Tuesday | 60°F | Slight Chance Rain Showers then Partly Sunny | 10 mph ENE | 20% |
| Tuesday Night | 45°F | Mostly Clear | 3 to 8 mph ENE | 3% |
| Wednesday | 65°F | Sunny | 6 mph ENE | 1% |
| Wednesday Night | 50°F | Partly Cloudy | 5 mph E | 4% |
| Thursday | 66°F | Partly Sunny | 5 mph E | 10% |
| Thursday Night | 52°F | Partly Cloudy | 3 mph E | 8% |
| Friday | 68°F | Mostly Sunny | 2 to 6 mph ESE | 4% |
Forecast source: National Weather Service (api.weather.gov) for Reinbeck (42.323, -92.594). Updated through the day.
Growing snapshot for Reinbeck
Last spring frost
Apr 29
First fall frost
Oct 9
Growing season
160 days
Hardiness zone
5a
More local growing data for Reinbeck: nearby ZIP 50669 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Grundy Ctr, Ia (7.6 mi from Reinbeck). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.