Sullivan, OH Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Sullivan, a community in Ashland County, Ohio.
Today
82°F
Sunny
Sunny, with a high near 82. Southeast wind around 3 mph.
7-day forecast for Sullivan
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 82°F | Sunny | 3 mph SE | 0% |
| Tonight | 61°F | Mostly Clear | 3 mph E | 0% |
| Wednesday | 85°F | Mostly Sunny then Chance Showers And Thunderstorms | 1 to 5 mph S | 36% |
| Wednesday Night | 66°F | Chance Showers And Thunderstorms | 1 to 5 mph S | 29% |
| Thursday | 85°F | Showers And Thunderstorms Likely | 5 to 8 mph SW | 55% |
| Thursday Night | 66°F | Showers And Thunderstorms Likely | 3 to 7 mph SW | 58% |
| Friday | 82°F | Showers And Thunderstorms Likely | 7 mph SW | 68% |
| Friday Night | 65°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 6 mph SW | 68% |
| Saturday | 84°F | Chance Showers And Thunderstorms | 5 to 8 mph SW | 30% |
| Saturday Night | 66°F | Chance Showers And Thunderstorms | 7 mph SW | 30% |
| Sunday | 86°F | Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms | 6 to 13 mph SW | 20% |
| Sunday Night | 68°F | Chance Showers And Thunderstorms | 12 mph SW | 36% |
| Monday | 86°F | Chance Rain Showers | 12 mph SW | 41% |
| Monday Night | 67°F | Chance Showers And Thunderstorms | 7 to 10 mph SW | 52% |
Forecast source: National Weather Service (api.weather.gov) for Sullivan (41.021, -82.215). Updated through the day.
Growing snapshot for Sullivan
Last spring frost
Apr 29
First fall frost
Oct 19
Growing season
172 days
Hardiness zone
6a
More local growing data for Sullivan: nearby ZIP 44880 weather · frost dates · planting calendar · Ohio frost dates
Nearby towns & communities
Ashland
Bailey Lakes
Cinnamon Lake
Hayesville
Jeromesville
Loudonville
Nankin
Perrysville
Polk
Savannah
Climate data from the nearest NOAA station, Chippewa Lake, Oh (14.8 mi from Sullivan). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.