Bonaparte, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Bonaparte, a city in Van Buren County, Iowa.
Overnight
50°F
Mostly Cloudy
Mostly cloudy. Low around 50, with temperatures rising to around 52 overnight. West wind around 5 mph, with gusts as high as 20 mph.
7-day forecast for Bonaparte
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 50°F | Mostly Cloudy | 5 mph W | 10% |
| Wednesday | 53°F | Mostly Cloudy | 10 mph W | 14% |
| Wednesday Night | 45°F | Mostly Cloudy | 5 to 10 mph W | 3% |
| Thursday | 55°F | Chance Rain Showers | 5 to 10 mph W | 44% |
| Thursday Night | 43°F | Slight Chance Rain Showers then Mostly Cloudy | 5 mph NW | 20% |
| Friday | 50°F | Partly Sunny | 5 mph N | 2% |
| Friday Night | 32°F | Partly Cloudy | 0 mph | 0% |
| Saturday | 52°F | Mostly Sunny | 0 mph | 0% |
| Saturday Night | 34°F | Mostly Clear | 0 mph | 1% |
| Sunday | 59°F | Sunny | 0 to 5 mph W | 1% |
| Sunday Night | 36°F | Clear | 0 mph | 0% |
| Monday | 64°F | Sunny | 0 to 5 mph SW | 0% |
| Monday Night | 41°F | Clear | 0 to 5 mph W | 0% |
| Tuesday | 65°F | Sunny | 0 mph | 0% |
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 Nov 4, 2026.