Sully, IA Weather & Growing Conditions
Today
82°F
Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 11am, then a slight chance of showers and thunderstorms between 11am and 3pm, then a chance of showers and thunderstorms between 3pm and 4pm, then a chance of showers and thunderstorms. Partly sunny. High near 82, with temperatures falling to around 80 in the afternoon. Southwest wind around 7 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 82°F | Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 7 mph SW | 47% |
| Tonight | 63°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 3 to 8 mph NNW | 63% |
| Sunday | 66°F | Chance Rain Showers then Slight Chance Showers And Thunderstorms | 9 to 13 mph NNE | 53% |
| Sunday Night | 57°F | Slight Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 13 mph NE | 55% |
| Monday | 62°F | Rain Showers Likely | 13 mph NE | 59% |
| Monday Night | 51°F | Rain Showers Likely | 10 mph NE | 59% |
| Tuesday | 60°F | Slight Chance Rain Showers then Partly Sunny | 9 mph NE | 22% |
| Tuesday Night | 46°F | Partly Cloudy | 3 to 7 mph NE | 3% |
| Wednesday | 64°F | Sunny | 6 mph ENE | 1% |
| Wednesday Night | 52°F | Partly Cloudy | 3 mph ENE | 3% |
| Thursday | 65°F | Slight Chance Rain Showers | 3 mph E | 16% |
| Thursday Night | 55°F | Mostly Cloudy | 2 mph E | 7% |
| Friday | 68°F | Partly Sunny | 2 to 6 mph E | 7% |
| Friday Night | 56°F | Mostly Cloudy | 3 mph ESE | 7% |
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 Sep 19, 2026.