Sac City, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Sac City, a city in Sac County, Iowa.
Overnight
42°F
Chance Rain Showers
A chance of rain showers. Cloudy. Low around 42, with temperatures rising to around 44 overnight. Northwest wind around 17 mph, with gusts as high as 25 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Sac City
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 42°F | Chance Rain Showers | 17 mph NW | 35% |
| Wednesday | 48°F | Chance Rain Showers | 12 to 17 mph WNW | 36% |
| Wednesday Night | 41°F | Chance Rain Showers | 10 mph WNW | 29% |
| Thursday | 50°F | Chance Rain Showers then Mostly Cloudy | 7 to 10 mph NNW | 27% |
| Thursday Night | 35°F | Mostly Cloudy | 3 to 7 mph N | 1% |
| Friday | 49°F | Mostly Sunny | 0 to 3 mph N | 0% |
| Friday Night | 29°F | Partly Cloudy | 1 mph W | 0% |
| Saturday | 53°F | Mostly Sunny | 3 mph SW | 1% |
| Saturday Night | 35°F | Mostly Clear | 3 mph W | 0% |
| Sunday | 59°F | Sunny | 3 mph W | 0% |
| Sunday Night | 38°F | Clear | 5 mph SW | 0% |
| Monday | 63°F | Sunny | 3 to 7 mph WSW | 0% |
| Monday Night | 40°F | Mostly Clear | 3 mph WNW | 0% |
| Tuesday | 62°F | Mostly Sunny | 2 mph NW | 0% |
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 Nov 4, 2026.