Sullivan, OH Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Sullivan, a community in Ashland County, Ohio.
Tonight
59°F
Partly Cloudy
Partly cloudy, with a low around 59. South wind 13 to 16 mph, with gusts as high as 26 mph.
7-day forecast for Sullivan
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 59°F | Partly Cloudy | 13 to 16 mph S | 5% |
| Wednesday | 66°F | Light Rain | 15 to 18 mph S | 89% |
| Wednesday Night | 53°F | Light Rain Likely | 8 to 20 mph SW | 72% |
| Thursday | 63°F | Mostly Sunny | 8 to 15 mph SW | 4% |
| Thursday Night | 46°F | Mostly Cloudy | 3 to 9 mph SW | 4% |
| Friday | 58°F | Mostly Cloudy then Chance Light Rain | 3 to 8 mph W | 30% |
| Friday Night | 40°F | Chance Light Rain | 9 mph NW | 30% |
| Saturday | 52°F | Chance Light Rain | 10 mph NW | 25% |
| Saturday Night | 34°F | Slight Chance Light Rain then Mostly Cloudy | 6 mph W | 23% |
| Sunday | 53°F | Partly Sunny | 5 to 12 mph W | 14% |
| Sunday Night | 35°F | Partly Cloudy then Slight Chance Light Rain | 10 mph W | 15% |
| Monday | 56°F | Slight Chance Light Rain | 8 to 13 mph W | 19% |
| Monday Night | 38°F | Slight Chance Light Rain then Partly Cloudy | 9 to 13 mph SW | 19% |
| Tuesday | 59°F | Mostly Sunny | 14 mph W | 6% |
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 Nov 4, 2026.