Seymour, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Seymour, a city in Wayne County, Iowa.
Tonight
70°F
Mostly Cloudy then Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms between 3am and 5am, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 70. South wind around 8 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Seymour
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 70°F | Mostly Cloudy then Slight Chance Showers And Thunderstorms | 8 mph S | 25% |
| Saturday | 84°F | Chance Showers And Thunderstorms | 7 to 10 mph SSW | 26% |
| Saturday Night | 64°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 2 to 6 mph NNW | 69% |
| Sunday | 72°F | Showers And Thunderstorms Likely | 5 to 10 mph N | 65% |
| Sunday Night | 59°F | Showers And Thunderstorms Likely | 10 mph NE | 65% |
| Monday | 62°F | Rain Showers Likely | 12 mph NE | 59% |
| Monday Night | 53°F | Chance Rain Showers | 7 to 10 mph NE | 50% |
| Tuesday | 60°F | Slight Chance Rain Showers | 9 mph NE | 17% |
| Tuesday Night | 48°F | Mostly Cloudy | 2 to 6 mph NE | 4% |
| Wednesday | 63°F | Mostly Sunny | 5 mph NE | 1% |
| Wednesday Night | 52°F | Partly Cloudy | 2 mph ENE | 3% |
| Thursday | 66°F | Partly Sunny | 2 mph E | 10% |
| Thursday Night | 55°F | Mostly Cloudy then Slight Chance Rain Showers | 1 mph E | 15% |
| Friday | 68°F | Slight Chance Rain Showers | 1 to 5 mph E | 15% |
Forecast source: National Weather Service (api.weather.gov) for Seymour (40.682, -93.121). Updated through the day.
Growing snapshot for Seymour
Last spring frost
Apr 21
First fall frost
Oct 19
Growing season
178 days
Hardiness zone
5b
More local growing data for Seymour: nearby ZIP 52590 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Allerton, Ia (12.1 mi from Seymour). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.