Reinbeck, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Reinbeck, a city in Grundy County, Iowa.
Overnight
47°F
Slight Chance Rain Showers
A slight chance of rain showers. Cloudy. Low around 47, with temperatures rising to around 50 overnight. West wind around 12 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Reinbeck
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 47°F | Slight Chance Rain Showers | 12 mph W | 24% |
| Wednesday | 52°F | Chance Rain Showers | 13 to 18 mph W | 32% |
| Wednesday Night | 43°F | Chance Rain Showers | 16 mph W | 35% |
| Thursday | 53°F | Chance Rain Showers | 14 mph NW | 48% |
| Thursday Night | 37°F | Slight Chance Rain Showers then Mostly Cloudy | 8 to 13 mph N | 19% |
| Friday | 48°F | Mostly Sunny | 5 to 9 mph N | 4% |
| Friday Night | 28°F | Partly Cloudy | 0 to 3 mph N | 0% |
| Saturday | 51°F | Mostly Sunny | 0 to 6 mph W | 0% |
| Saturday Night | 34°F | Mostly Clear | 6 mph W | 2% |
| Sunday | 57°F | Sunny | 7 mph W | 2% |
| Sunday Night | 35°F | Clear | 5 mph SW | 0% |
| Monday | 62°F | Sunny | 5 to 10 mph SW | 0% |
| Monday Night | 39°F | Mostly Clear | 3 to 7 mph W | 0% |
| Tuesday | 62°F | Sunny | 5 mph NW | 0% |
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 Nov 4, 2026.