Swea City, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Swea City, a city in Kossuth County, Iowa.
Overnight
62°F
Patchy Fog
Patchy fog and a chance of showers and thunderstorms before 4am, then patchy fog and a chance of showers and thunderstorms. Cloudy, with a low around 62. East northeast wind around 7 mph. Chance of precipitation is 30%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Swea City
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 62°F | Patchy Fog | 7 mph ENE | 30% |
| Saturday | 68°F | Patchy Fog | 7 to 12 mph N | 38% |
| Saturday Night | 56°F | Slight Chance Rain Showers then Cloudy | 14 mph NNE | 24% |
| Sunday | 66°F | Mostly Cloudy | 15 mph NE | 12% |
| Sunday Night | 51°F | Chance Rain Showers | 9 to 13 mph ENE | 33% |
| Monday | 61°F | Chance Rain Showers | 10 mph ENE | 34% |
| Monday Night | 46°F | Chance Rain Showers then Mostly Cloudy | 5 to 9 mph ENE | 28% |
| Tuesday | 63°F | Mostly Sunny | 7 mph E | 5% |
| Tuesday Night | 43°F | Mostly Clear | 6 mph ESE | 1% |
| Wednesday | 66°F | Sunny | 6 mph SE | 2% |
| Wednesday Night | 48°F | Partly Cloudy | 5 mph SE | 10% |
| Thursday | 67°F | Slight Chance Rain Showers | 3 to 7 mph SSE | 16% |
| Thursday Night | 51°F | Partly Cloudy | 5 mph SE | 6% |
| Friday | 70°F | Mostly Sunny | 3 to 8 mph SE | 6% |
Forecast source: National Weather Service (api.weather.gov) for Swea City (43.383, -94.310). Updated through the day.
Growing snapshot for Swea City
Last spring frost
May 4
First fall frost
Oct 1
Growing season
150 days
Hardiness zone
5a
More local growing data for Swea City: nearby ZIP 50590 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
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Fenton
Irvington
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St. Benedict
Titonka
Wesley
Whittemore
Climate data from the nearest NOAA station, Swea City 5N, Ia (3.3 mi from Swea City). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.