Bonaparte, IA Weather & Growing Conditions
Tonight
70°F
Partly Cloudy then Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms after 4am. Partly cloudy. Low around 70, with temperatures rising to around 72 overnight. Southeast wind around 5 mph. Chance of precipitation is 20%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 70°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 5 mph SE | 22% |
| Saturday | 86°F | Slight Chance Rain Showers | 5 mph S | 19% |
| Saturday Night | 66°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 0 to 5 mph NW | 70% |
| Sunday | 75°F | Showers And Thunderstorms Likely | 0 to 10 mph N | 70% |
| Sunday Night | 60°F | Showers And Thunderstorms Likely | 5 to 10 mph NE | 69% |
| Monday | 64°F | Rain Showers Likely | 10 mph NE | 64% |
| Monday Night | 54°F | Chance Rain Showers | 5 to 10 mph NE | 52% |
| Tuesday | 62°F | Chance Rain Showers | 5 mph NE | 34% |
| Tuesday Night | 49°F | Mostly Cloudy | 0 to 5 mph NE | 5% |
| Wednesday | 66°F | Mostly Sunny | 5 mph NE | 1% |
| Wednesday Night | 53°F | Partly Cloudy | 0 to 5 mph NE | 2% |
| Thursday | 69°F | Partly Sunny | 0 to 5 mph NE | 6% |
| Thursday Night | 55°F | Partly Cloudy | 0 mph | 7% |
| Friday | 71°F | Mostly Sunny | 0 to 5 mph NE | 9% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Bonaparte, IA
Last spring frost
Apr 26
First fall frost
Oct 13
Growing season
169 days
Hardiness zone
6a
Explore more for Bonaparte, IA: full frost dates · planting calendar · Iowa frost dates
Climate data from the nearest NOAA station, Keosauqua, Ia (9.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.