Sullivan, OH Weather & Growing Conditions
This Afternoon
82°F
Sunny
Sunny, with a high near 82. East wind around 3 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 82°F | Sunny | 3 mph E | 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 | 35% |
| Wednesday Night | 65°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 | 65°F | Showers And Thunderstorms Likely | 3 to 7 mph SW | 58% |
| Friday | 82°F | Showers And Thunderstorms Likely | 5 to 8 mph SW | 67% |
| Friday Night | 64°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 6 mph SW | 67% |
| Saturday | 84°F | Chance Showers And Thunderstorms | 5 to 8 mph SW | 29% |
| Saturday Night | 65°F | Chance Showers And Thunderstorms | 7 mph SW | 29% |
| 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 | 66°F | Chance Showers And Thunderstorms | 7 to 10 mph SW | 52% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Sullivan, OH
Last spring frost
Apr 29
First fall frost
Oct 19
Growing season
172 days
Hardiness zone
6a
Explore more for Sullivan, OH: full frost dates · planting calendar · Ohio frost dates
Climate data from the nearest NOAA station, Chippewa Lake, Oh (14.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.