Sully, IA Weather & Growing Conditions
Tonight
69°F
Patchy Fog
A slight chance of showers and thunderstorms before midnight, then patchy fog and a chance of showers and thunderstorms. Mostly cloudy, with a low around 69. Southeast wind 7 to 10 mph. Chance of precipitation is 50%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 69°F | Patchy Fog | 7 to 10 mph SE | 50% |
| Saturday | 82°F | Chance Showers And Thunderstorms | 6 to 9 mph SSW | 47% |
| Saturday Night | 63°F | Chance Showers And Thunderstorms | 8 mph N | 50% |
| Sunday | 68°F | Showers And Thunderstorms Likely | 9 to 13 mph NNE | 64% |
| Sunday Night | 58°F | Showers And Thunderstorms Likely | 13 mph NE | 64% |
| Monday | 62°F | Rain Showers Likely | 13 mph ENE | 63% |
| Monday Night | 53°F | Rain Showers Likely | 10 mph NE | 63% |
| Tuesday | 61°F | Slight Chance Rain Showers then Mostly Cloudy | 9 mph NE | 20% |
| Tuesday Night | 48°F | Partly Cloudy | 3 to 7 mph NE | 4% |
| Wednesday | 65°F | Mostly Sunny | 5 mph ENE | 1% |
| Wednesday Night | 52°F | Partly Cloudy | 3 mph E | 3% |
| Thursday | 67°F | Partly Sunny | 3 mph ESE | 10% |
| Thursday Night | 55°F | Mostly Cloudy | 2 mph ESE | 8% |
| Friday | 68°F | Slight Chance Rain Showers | 5 mph E | 15% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Sully, IA
Last spring frost
Apr 22
First fall frost
Oct 17
Growing season
174 days
Hardiness zone
5b
Explore more for Sully, IA: full frost dates · planting calendar · Iowa frost dates
Climate data from the nearest NOAA station, Newton, Ia (9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.