Sully, IA Weather & Growing Conditions
Overnight
46°F
Slight Chance Rain Showers
A slight chance of rain showers after 5am. Cloudy, with a low around 46. West wind around 13 mph, with gusts as high as 18 mph. Chance of precipitation is 20%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 46°F | Slight Chance Rain Showers | 13 mph W | 17% |
| Wednesday | 52°F | Slight Chance Rain Showers then Cloudy | 13 to 16 mph W | 20% |
| Wednesday Night | 45°F | Cloudy then Slight Chance Rain Showers | 12 mph W | 15% |
| Thursday | 54°F | Rain Showers Likely | 12 mph NW | 56% |
| Thursday Night | 40°F | Mostly Cloudy | 8 mph N | 8% |
| Friday | 50°F | Mostly Sunny | 5 to 8 mph N | 3% |
| Friday Night | 30°F | Partly Cloudy | 0 to 3 mph NNE | 0% |
| Saturday | 52°F | Mostly Sunny | 0 to 3 mph W | 0% |
| Saturday Night | 35°F | Mostly Clear | 3 mph W | 1% |
| Sunday | 59°F | Sunny | 6 mph W | 1% |
| Sunday Night | 36°F | Clear | 3 mph SW | 0% |
| Monday | 65°F | Sunny | 3 to 8 mph SW | 0% |
| Monday Night | 41°F | Clear | 5 mph W | 0% |
| Tuesday | 64°F | Sunny | 3 mph NNW | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Sully, IA
Last spring frost
May 3
First fall frost
Oct 6
Growing season
155 days
Hardiness zone
5b
Explore more for Sully, IA: full frost dates · planting calendar · Iowa frost dates
Climate data from the nearest NOAA station, Grinnell 3 Sw, Ia (12.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.