Fostoria, OH Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Fostoria, a city in Seneca County, Ohio.
This Afternoon
74°F
Mostly Sunny
Mostly sunny, with a high near 74. Northeast wind around 12 mph.
7-day forecast for Fostoria
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 74°F | Mostly Sunny | 12 mph NE | 0% |
| Tonight | 58°F | Partly Cloudy | 5 to 9 mph NE | 4% |
| Saturday | 77°F | Showers And Thunderstorms Likely | 7 mph SE | 56% |
| Saturday Night | 65°F | Showers And Thunderstorms | 7 mph S | 81% |
| Sunday | 75°F | Showers And Thunderstorms | 7 to 14 mph NW | 86% |
| Sunday Night | 58°F | Rain Showers Likely | 13 to 16 mph NE | 62% |
| Monday | 66°F | Chance Rain Showers | 14 to 20 mph NE | 43% |
| Monday Night | 55°F | Chance Rain Showers | 15 to 20 mph NE | 43% |
| Tuesday | 65°F | Chance Rain Showers | 16 to 20 mph NE | 31% |
| Tuesday Night | 56°F | Chance Rain Showers | 13 to 18 mph NE | 48% |
| Wednesday | 66°F | Chance Rain Showers | 14 mph NE | 48% |
| Wednesday Night | 55°F | Chance Rain Showers | 8 to 12 mph NE | 44% |
| Thursday | 68°F | Partly Sunny then Slight Chance Rain Showers | 8 to 12 mph NE | 16% |
| Thursday Night | 54°F | Slight Chance Rain Showers then Mostly Cloudy | 6 to 12 mph N | 16% |
Forecast source: National Weather Service (api.weather.gov) for Fostoria (41.160, -83.412). Updated through the day.
Growing snapshot for Fostoria
Last spring frost
Apr 23
First fall frost
Oct 23
Growing season
184 days
Hardiness zone
6b
More local growing data for Fostoria: nearby ZIP 44830 weather · frost dates · planting calendar · Ohio frost dates
Nearby towns & communities
Attica
Bascom
Bettsville
Bloomville
Flat Rock
Fort Seneca
Green Springs
Kansas
McCutchenville
New Riegel
Old Fort
Republic
Tiffin
Climate data from the nearest NOAA station, Tiffin, Oh (12.6 mi from Fostoria). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 18, 2026.