Tiffin, OH Weather & Growing Conditions
Tonight
57°F
Partly Cloudy
Partly cloudy, with a low around 57. East wind around 6 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 57°F | Partly Cloudy | 6 mph E | 1% |
| Saturday | 77°F | Chance Rain Showers | 6 mph E | 49% |
| Saturday Night | 65°F | Showers And Thunderstorms | 7 mph S | 76% |
| Sunday | 75°F | Showers And Thunderstorms | 6 to 14 mph NW | 88% |
| Sunday Night | 58°F | Rain Showers Likely | 14 mph NE | 63% |
| Monday | 67°F | Chance Rain Showers | 13 to 18 mph NE | 40% |
| Monday Night | 55°F | Chance Rain Showers | 14 to 18 mph NE | 40% |
| Tuesday | 66°F | Chance Rain Showers | 15 to 18 mph NE | 32% |
| Tuesday Night | 56°F | Chance Rain Showers | 13 to 18 mph NE | 51% |
| Wednesday | 67°F | Chance Rain Showers | 14 mph NE | 51% |
| Wednesday Night | 55°F | Chance Rain Showers | 8 to 12 mph NE | 50% |
| Thursday | 69°F | Slight Chance Rain Showers | 10 mph NE | 19% |
| Thursday Night | 54°F | Slight Chance Rain Showers then Mostly Cloudy | 5 to 10 mph N | 19% |
| Friday | 69°F | Mostly Sunny | 6 to 12 mph N | 11% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Tiffin, OH
Last spring frost
Apr 23
First fall frost
Oct 23
Growing season
184 days
Hardiness zone
6a
Explore more for Tiffin, OH: full frost dates · planting calendar · Ohio frost dates
Climate data from the nearest NOAA station, Tiffin, Oh (0.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.