Rathbun, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Rathbun, a city in Appanoose County, Iowa.
This Afternoon
71°F
Showers And Thunderstorms Likely
Showers and thunderstorms likely before 5pm, then a slight chance of showers and thunderstorms. Mostly cloudy. High near 71, with temperatures falling to around 64 in the afternoon. South wind around 12 mph, with gusts as high as 22 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Rathbun
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 71°F | Showers And Thunderstorms Likely | 12 mph S | 61% |
| Tonight | 48°F | Cloudy | 7 to 10 mph SW | 13% |
| Wednesday | 54°F | Mostly Cloudy | 10 to 16 mph WSW | 11% |
| Wednesday Night | 43°F | Mostly Cloudy | 9 mph WSW | 6% |
| Thursday | 54°F | Mostly Cloudy then Chance Rain Showers | 6 to 9 mph WNW | 29% |
| Thursday Night | 41°F | Slight Chance Rain Showers then Mostly Cloudy | 6 mph NNW | 20% |
| Friday | 53°F | Partly Sunny | 2 to 7 mph N | 5% |
| Friday Night | 35°F | Mostly Cloudy | 1 mph NNW | 1% |
| Saturday | 56°F | Partly Sunny | 2 mph W | 2% |
| Saturday Night | 37°F | Mostly Clear | 0 to 3 mph W | 4% |
| Sunday | 62°F | Sunny | 5 mph W | 6% |
| Sunday Night | 39°F | Mostly Clear | 5 mph WSW | 2% |
| Monday | 66°F | Sunny | 5 to 9 mph SW | 0% |
| Monday Night | 42°F | Mostly Clear | 5 mph W | 0% |
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 Nov 3, 2026.