Seymour, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Seymour, a city in Wayne County, Iowa.
Today
89°F
Mostly Sunny then Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms after 5pm. Mostly sunny. High near 89, with temperatures falling to around 87 in the afternoon. Southwest wind 3 to 7 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Seymour
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 89°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 3 to 7 mph SW | 15% |
| Tonight | 66°F | Showers And Thunderstorms Likely | 5 to 8 mph NNE | 57% |
| Wednesday | 77°F | Chance Showers And Thunderstorms | 8 mph NNE | 90% |
| Wednesday Night | 61°F | Showers And Thunderstorms Likely | 2 to 8 mph NE | 64% |
| Thursday | 81°F | Chance Showers And Thunderstorms then Mostly Sunny | 3 mph ENE | 41% |
| Thursday Night | 62°F | Mostly Clear | 2 mph ESE | 3% |
| Friday | 86°F | Sunny | 1 to 5 mph S | 7% |
| Friday Night | 67°F | Mostly Clear | 5 mph S | 14% |
| Saturday | 89°F | Sunny | 5 to 12 mph SSW | 10% |
| Saturday Night | 72°F | Mostly Clear | 12 to 15 mph SSW | 9% |
| Sunday | 91°F | Sunny | 14 to 17 mph SSW | 9% |
| Sunday Night | 72°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 12 to 17 mph SSW | 18% |
| Monday | 92°F | Slight Chance Showers And Thunderstorms then Mostly Sunny | 14 to 20 mph SSW | 18% |
| Monday Night | 72°F | Partly Cloudy then Chance Showers And Thunderstorms | 13 to 18 mph SSW | 25% |
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 Aug 4, 2026.