Sac City, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Sac City, a city in Sac County, Iowa.
Today
74°F
Patchy Fog
Patchy fog and a slight chance of rain showers before 1pm. Mostly cloudy. High near 74, with temperatures falling to around 71 in the afternoon. North wind around 7 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Sac City
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 74°F | Patchy Fog | 7 mph N | 20% |
| Tonight | 58°F | Slight Chance Rain Showers then Slight Chance Drizzle | 9 mph NNE | 19% |
| Sunday | 66°F | Chance Drizzle | 12 mph NE | 39% |
| Sunday Night | 54°F | Rain Showers Likely | 8 mph ENE | 61% |
| Monday | 60°F | Rain Showers Likely | 8 mph ENE | 61% |
| Monday Night | 49°F | Chance Rain Showers then Mostly Cloudy | 6 mph ENE | 46% |
| Tuesday | 61°F | Partly Sunny | 5 mph ENE | 11% |
| Tuesday Night | 45°F | Partly Cloudy | 2 mph ESE | 1% |
| Wednesday | 65°F | Mostly Sunny | 3 mph SE | 2% |
| Wednesday Night | 50°F | Partly Cloudy then Slight Chance Rain Showers | 2 mph SE | 17% |
| Thursday | 67°F | Slight Chance Rain Showers | 3 mph SE | 19% |
| Thursday Night | 54°F | Mostly Cloudy | 2 mph SE | 13% |
| Friday | 70°F | Partly Sunny | 1 to 5 mph SE | 13% |
| Friday Night | 55°F | Mostly Cloudy | 3 mph SE | 13% |
Forecast source: National Weather Service (api.weather.gov) for Sac City (42.422, -94.997). Updated through the day.
Growing snapshot for Sac City
Last spring frost
Apr 30
First fall frost
Oct 6
Growing season
158 days
Hardiness zone
5a
More local growing data for Sac City: nearby ZIP 50583 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Sac City, Ia (1 mi from Sac City). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.