Belle Plaine, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Belle Plaine, a city in Benton County, Iowa.
This Afternoon
70°F
Showers And Thunderstorms
Showers and thunderstorms. Mostly cloudy. High near 70, with temperatures falling to around 65 in the afternoon. South wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%.
7-day forecast for Belle Plaine
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 70°F | Showers And Thunderstorms | 10 to 15 mph S | 89% |
| Tonight | 47°F | Rain Showers Likely then Mostly Cloudy | 10 mph S | 55% |
| Wednesday | 54°F | Chance Rain Showers | 15 mph W | 32% |
| Wednesday Night | 42°F | Mostly Cloudy then Slight Chance Rain Showers | 10 to 15 mph W | 22% |
| Thursday | 53°F | Chance Rain Showers | 10 mph NW | 44% |
| Thursday Night | 38°F | Slight Chance Rain Showers then Mostly Cloudy | 5 to 10 mph N | 17% |
| Friday | 51°F | Partly Sunny | 5 to 10 mph N | 2% |
| Friday Night | 31°F | Partly Cloudy | 0 to 5 mph NW | 1% |
| Saturday | 54°F | Mostly Sunny | 0 to 5 mph W | 1% |
| Saturday Night | 34°F | Mostly Clear | 0 to 5 mph W | 4% |
| Sunday | 59°F | Sunny | 5 mph W | 5% |
| Sunday Night | 35°F | Mostly Clear | 5 mph SW | 2% |
| Monday | 64°F | Sunny | 5 to 10 mph SW | 0% |
| Monday Night | 39°F | Mostly Clear | 5 mph W | 0% |
Forecast source: National Weather Service (api.weather.gov) for Belle Plaine (41.896, -92.276). Updated through the day.
Growing snapshot for Belle Plaine
Last spring frost
Apr 28
First fall frost
Oct 10
Growing season
165 days
Hardiness zone
5a
More local growing data for Belle Plaine: nearby ZIP 52208 weather · frost dates · planting calendar · Iowa frost dates
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Walford
Watkins
Climate data from the nearest NOAA station, Belle Plaine, Ia (1.1 mi from Belle Plaine). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.