Sloan, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Sloan, a city in Woodbury County, Iowa.
Overnight
39°F
Slight Chance Rain Showers
A slight chance of rain showers before 4am. Cloudy. Low around 39, with temperatures rising to around 43 overnight. Northwest wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 20%.
7-day forecast for Sloan
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 39°F | Slight Chance Rain Showers | 15 mph NW | 18% |
| Wednesday | 49°F | Chance Rain Showers | 15 mph NW | 27% |
| Wednesday Night | 38°F | Chance Rain Showers | 10 to 15 mph NW | 29% |
| Thursday | 49°F | Mostly Cloudy | 10 to 15 mph NNW | 7% |
| Thursday Night | 33°F | Mostly Cloudy | 5 to 10 mph N | 0% |
| Friday | 49°F | Mostly Sunny | 0 to 5 mph NNE | 0% |
| Friday Night | 30°F | Partly Cloudy | 0 mph | 0% |
| Saturday | 55°F | Mostly Sunny | 0 to 5 mph SSW | 0% |
| Saturday Night | 34°F | Mostly Clear | 5 mph WSW | 0% |
| Sunday | 59°F | Sunny | 0 to 5 mph WSW | 0% |
| Sunday Night | 37°F | Clear | 5 mph S | 0% |
| Monday | 64°F | Sunny | 5 to 10 mph WSW | 0% |
| Monday Night | 38°F | Mostly Clear | 0 to 5 mph NW | 0% |
| Tuesday | 62°F | Mostly Sunny | 0 to 5 mph NW | 0% |
Forecast source: National Weather Service (api.weather.gov) for Sloan (42.233, -96.225). Updated through the day.
Growing snapshot for Sloan
Last spring frost
May 1
First fall frost
Oct 6
Growing season
156 days
Hardiness zone
5a
More local growing data for Sloan: nearby ZIP 51055 weather · frost dates · planting calendar · Iowa frost dates
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Smithland
Climate data from the nearest NOAA station, Walthill 1E, Ne (11.7 mi from Sloan). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.