Rathbun, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Rathbun, a city in Appanoose County, Iowa.
Overnight
70°F
Mostly Cloudy
Mostly cloudy. Low around 70, with temperatures rising to around 72 overnight. South wind around 6 mph. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Rathbun
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 70°F | Mostly Cloudy | 6 mph S | 14% |
| Saturday | 85°F | Chance Showers And Thunderstorms | 5 to 8 mph SSW | 31% |
| Saturday Night | 65°F | Chance Showers And Thunderstorms then Showers And Thunderstorms | 5 mph NNW | 76% |
| Sunday | 70°F | Rain Showers Likely then Chance Showers And Thunderstorms | 5 to 10 mph NNE | 58% |
| Sunday Night | 59°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 10 mph NE | 68% |
| Monday | 62°F | Rain Showers Likely | 12 mph NE | 68% |
| Monday Night | 53°F | Chance Rain Showers | 6 to 10 mph NE | 50% |
| Tuesday | 60°F | Chance Rain Showers then Partly Sunny | 8 mph NE | 41% |
| Tuesday Night | 47°F | Partly Cloudy | 5 mph NE | 3% |
| Wednesday | 64°F | Sunny | 3 mph NE | 2% |
| Wednesday Night | 52°F | Partly Cloudy | 2 mph ENE | 3% |
| Thursday | 67°F | Partly Sunny | 2 mph E | 11% |
| Thursday Night | 56°F | Mostly Cloudy | 1 mph E | 8% |
| Friday | 70°F | Partly Sunny | 3 mph E | 10% |
Forecast source: National Weather Service (api.weather.gov) for Rathbun (40.802, -92.888). Updated through the day.
Growing snapshot for Rathbun
Last spring frost
Apr 18
First fall frost
Oct 23
Growing season
187 days
Hardiness zone
5b
More local growing data for Rathbun: nearby ZIP 52574 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Rathbun Dam, Ia (3.8 mi from Rathbun). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.