Swea City, IA Weather & Growing Conditions
Today
64°F
Patchy Fog then Cloudy
Patchy fog and a slight chance of rain showers before noon. Cloudy, with a high near 64. North wind around 10 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 64°F | Patchy Fog then Cloudy | 10 mph N | 19% |
| Tonight | 56°F | Cloudy | 14 mph NNE | 12% |
| 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 | 33% |
| Monday Night | 46°F | Chance Rain Showers then Mostly Cloudy | 5 to 9 mph ENE | 28% |
| Tuesday | 63°F | Mostly Sunny | 5 to 8 mph E | 5% |
| Tuesday Night | 43°F | Mostly Clear | 6 mph ESE | 1% |
| Wednesday | 65°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% |
| Friday Night | 53°F | Partly Cloudy | 6 mph SSE | 13% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Swea City, IA
Last spring frost
May 4
First fall frost
Oct 1
Growing season
150 days
Hardiness zone
5a
Explore more for Swea City, IA: full frost dates · planting calendar · Iowa frost dates
Climate data from the nearest NOAA station, Swea City 5N, Ia (3.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.