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
42°F
Rain Showers Likely
Rain showers likely. Cloudy, with a low around 42. Northwest wind around 15 mph, with gusts as high as 23 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Swea City
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 42°F | Rain Showers Likely | 15 mph NW | 59% |
| Wednesday | 48°F | Rain Showers Likely | 15 to 18 mph WNW | 65% |
| Wednesday Night | 40°F | Rain Showers Likely | 16 mph WNW | 60% |
| Thursday | 46°F | Chance Rain Showers then Cloudy | 13 to 17 mph NNW | 31% |
| Thursday Night | 32°F | Mostly Cloudy | 5 to 12 mph N | 5% |
| Friday | 46°F | Mostly Sunny | 5 mph NNE | 0% |
| Friday Night | 27°F | Partly Cloudy | 3 mph ESE | 0% |
| Saturday | 49°F | Mostly Sunny | 3 to 8 mph SW | 0% |
| Saturday Night | 33°F | Mostly Clear | 7 mph W | 1% |
| Sunday | 55°F | Sunny | 7 mph W | 1% |
| Sunday Night | 35°F | Mostly Clear | 5 to 8 mph SW | 0% |
| Monday | 61°F | Sunny | 7 to 12 mph WSW | 0% |
| Monday Night | 37°F | Mostly Clear | 6 mph WNW | 0% |
| Tuesday | 57°F | Mostly Sunny | 5 mph NW | 0% |
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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Bancroft
Burt
Fenton
Irvington
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Lone Rock
Lu Verne
Sexton
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 Nov 4, 2026.