Belle Plaine, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Belle Plaine, a city in Benton County, Iowa.
Overnight
66°F
Patchy Fog
Patchy fog and showers and thunderstorms likely. Mostly cloudy. Low around 66, with temperatures rising to around 69 overnight. Southeast wind around 5 mph. Chance of precipitation is 70%.
7-day forecast for Belle Plaine
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 66°F | Patchy Fog | 5 mph SE | 71% |
| Saturday | 81°F | Patchy Fog | 5 to 10 mph S | 74% |
| Saturday Night | 61°F | Showers And Thunderstorms Likely | 5 to 10 mph N | 67% |
| Sunday | 67°F | Rain Showers Likely | 10 to 15 mph NE | 65% |
| Sunday Night | 55°F | Chance Rain Showers | 10 to 15 mph NE | 48% |
| Monday | 63°F | Chance Rain Showers | 10 mph NE | 48% |
| Monday Night | 49°F | Chance Rain Showers | 5 to 10 mph NE | 40% |
| Tuesday | 61°F | Chance Rain Showers then Partly Sunny | 5 to 10 mph NE | 28% |
| Tuesday Night | 45°F | Mostly Clear | 5 mph NE | 4% |
| Wednesday | 66°F | Sunny | 5 mph NE | 0% |
| Wednesday Night | 49°F | Partly Cloudy | 0 to 5 mph E | 2% |
| Thursday | 67°F | Partly Sunny | 0 to 5 mph E | 8% |
| Thursday Night | 52°F | Partly Cloudy | 0 mph | 7% |
| Friday | 69°F | Partly Sunny | 0 to 5 mph E | 6% |
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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Urbana
Van Horne
Vinton
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 Sep 19, 2026.