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
65°F
Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms. Cloudy. Low around 65, with temperatures rising to around 67 overnight. Southwest wind around 6 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 |
|---|---|---|---|---|
| Overnight | 65°F | Slight Chance Showers And Thunderstorms | 6 mph SW | 21% |
| Tuesday | 75°F | Showers And Thunderstorms Likely | 6 to 10 mph NNW | 58% |
| Tuesday Night | 58°F | Chance Showers And Thunderstorms | 1 to 5 mph N | 50% |
| Wednesday | 74°F | Partly Sunny | 3 mph NE | 8% |
| Wednesday Night | 53°F | Mostly Clear | 1 mph SE | 2% |
| Thursday | 81°F | Sunny | 1 to 5 mph S | 1% |
| Thursday Night | 61°F | Mostly Clear | 5 mph SSE | 3% |
| Friday | 86°F | Sunny | 3 to 8 mph SSW | 6% |
| Friday Night | 65°F | Mostly Clear | 7 mph S | 13% |
| Saturday | 90°F | Sunny | 3 to 13 mph S | 10% |
| Saturday Night | 69°F | Slight Chance Showers And Thunderstorms | 9 to 13 mph SSE | 19% |
| Sunday | 89°F | Slight Chance Showers And Thunderstorms then Mostly Sunny | 10 mph SSE | 19% |
| Sunday Night | 68°F | Chance Showers And Thunderstorms | 7 to 10 mph SSE | 28% |
| Monday | 89°F | Chance Showers And Thunderstorms then Mostly Sunny | 9 to 14 mph SE | 28% |
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 Aug 4, 2026.