Tiffin, OH Weather & Growing Conditions
Tonight
62°F
Partly Cloudy then Chance Light Rain
A chance of rain after 5am. Partly cloudy, with a low around 62. Southeast wind 12 to 17 mph, with gusts as high as 30 mph. Chance of precipitation is 30%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 62°F | Partly Cloudy then Chance Light Rain | 12 to 17 mph SE | 25% |
| Wednesday | 68°F | Light Rain | 21 mph S | 84% |
| Wednesday Night | 51°F | Light Rain Likely | 9 to 20 mph SW | 63% |
| Thursday | 64°F | Mostly Sunny | 10 to 17 mph SW | 3% |
| Thursday Night | 47°F | Mostly Cloudy | 3 to 9 mph SW | 7% |
| Friday | 58°F | Chance Light Rain | 3 to 9 mph NW | 33% |
| Friday Night | 40°F | Chance Light Rain | 9 mph NW | 33% |
| Saturday | 54°F | Slight Chance Light Rain | 7 to 10 mph NW | 19% |
| Saturday Night | 34°F | Partly Cloudy | 2 to 6 mph W | 12% |
| Sunday | 55°F | Mostly Sunny then Slight Chance Light Rain | 3 to 13 mph SW | 15% |
| Sunday Night | 35°F | Slight Chance Light Rain then Partly Cloudy | 7 to 12 mph W | 15% |
| Monday | 58°F | Mostly Sunny | 7 to 14 mph W | 14% |
| Monday Night | 39°F | Partly Cloudy | 13 mph SW | 14% |
| Tuesday | 61°F | Mostly Sunny | 10 to 14 mph W | 4% |
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 Nov 4, 2026.