Sully, IA Weather & Growing Conditions
Today
84°F
Partly Sunny then Chance Showers And Thunderstorms
A chance of showers and thunderstorms after 2pm. Partly sunny. High near 84, with temperatures falling to around 82 in the afternoon. West wind around 7 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 84°F | Partly Sunny then Chance Showers And Thunderstorms | 7 mph W | 26% |
| Tonight | 63°F | Showers And Thunderstorms | 9 mph NNE | 91% |
| Wednesday | 74°F | Showers And Thunderstorms | 7 mph NNE | 89% |
| Wednesday Night | 58°F | Chance Showers And Thunderstorms | 2 to 6 mph NNE | 49% |
| Thursday | 81°F | Sunny | 3 mph ENE | 6% |
| Thursday Night | 61°F | Mostly Clear | 2 mph ESE | 2% |
| Friday | 84°F | Sunny | 2 to 6 mph SE | 6% |
| Friday Night | 66°F | Slight Chance Showers And Thunderstorms | 5 mph SSE | 15% |
| Saturday | 88°F | Sunny then Slight Chance Rain Showers | 3 to 7 mph S | 15% |
| Saturday Night | 71°F | Slight Chance Rain Showers then Mostly Clear | 9 mph S | 15% |
| Sunday | 89°F | Mostly Sunny | 10 mph S | 14% |
| Sunday Night | 70°F | Slight Chance Showers And Thunderstorms | 9 mph S | 32% |
| Monday | 89°F | Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 7 to 12 mph S | 32% |
| Monday Night | 71°F | Chance Showers And Thunderstorms | 10 mph ESE | 28% |
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 Aug 4, 2026.