Bonaparte, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Bonaparte, a city in Van Buren County, Iowa.
Tonight
66°F
Chance Showers And Thunderstorms
A slight chance of rain showers before 7pm, then a chance of showers and thunderstorms between 7pm and 1am, then showers and thunderstorms likely. Mostly cloudy. Low around 66, with temperatures rising to around 68 overnight. North wind around 0 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast for Bonaparte
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 66°F | Chance Showers And Thunderstorms | 0 mph | 63% |
| Sunday | 72°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 0 to 10 mph N | 63% |
| Sunday Night | 59°F | Chance Showers And Thunderstorms | 5 to 10 mph NE | 65% |
| Monday | 63°F | Showers And Thunderstorms | 5 to 10 mph NE | 77% |
| Monday Night | 54°F | Rain Showers Likely | 5 mph NE | 71% |
| Tuesday | 62°F | Chance Rain Showers | 5 to 10 mph NE | 34% |
| Tuesday Night | 49°F | Partly Cloudy | 0 to 5 mph NE | 3% |
| Wednesday | 64°F | Mostly Sunny | 5 mph NE | 1% |
| Wednesday Night | 52°F | Partly Cloudy | 0 to 5 mph NE | 0% |
| Thursday | 68°F | Partly Sunny | 0 mph | 4% |
| Thursday Night | 57°F | Slight Chance Rain Showers | 0 mph | 18% |
| Friday | 72°F | Slight Chance Rain Showers | 0 to 5 mph NE | 18% |
| Friday Night | 58°F | Partly Cloudy | 0 mph | 8% |
| Saturday | 73°F | Mostly Sunny | 0 to 5 mph E | 9% |
Forecast source: National Weather Service (api.weather.gov) for Bonaparte (40.701, -91.801). Updated through the day.
Growing snapshot for Bonaparte
Last spring frost
Apr 26
First fall frost
Oct 13
Growing season
169 days
Hardiness zone
6a
More local growing data for Bonaparte: nearby ZIP 52620 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Keosauqua, Ia (9.3 mi from Bonaparte). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.