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Bonaparte, IA Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Bonaparte, a city in Van Buren County, Iowa.

Overnight
70°F
Patchy Fog
Patchy fog. Mostly cloudy. Low around 70, with temperatures rising to around 72 overnight. South wind around 5 mph.

7-day forecast for Bonaparte

WhenTempForecastWindPrecip
Overnight 70°F Patchy Fog 5 mph S 14%
Saturday 86°F Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms 5 to 10 mph S 21%
Saturday Night 66°F Chance Showers And Thunderstorms 5 mph NW 73%
Sunday 73°F Showers And Thunderstorms then Chance Showers And Thunderstorms 5 to 10 mph N 75%
Sunday Night 60°F Chance Showers And Thunderstorms then Showers And Thunderstorms Likely 5 to 10 mph NE 65%
Monday 64°F Showers And Thunderstorms Likely 10 mph NE 65%
Monday Night 54°F Chance Rain Showers 5 to 10 mph NE 47%
Tuesday 62°F Chance Rain Showers 5 to 10 mph NE 41%
Tuesday Night 48°F Partly Cloudy 0 to 5 mph NE 4%
Wednesday 66°F Mostly Sunny 5 mph NE 1%
Wednesday Night 52°F Partly Cloudy 0 to 5 mph NE 3%
Thursday 70°F Partly Sunny 0 to 5 mph NE 7%
Thursday Night 56°F Mostly Cloudy 0 mph 4%
Friday 72°F Partly Sunny 0 to 5 mph E 5%

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

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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 19, 2026.