Tiffin, OH Weather & Growing Conditions
Overnight
62°F
Chance Light Rain
A chance of rain after 5am. Mostly cloudy, with a low around 62. South wind around 17 mph, with gusts as high as 31 mph. Chance of precipitation is 30%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 62°F | Chance Light Rain | 17 mph S | 26% |
| Wednesday | 67°F | Light Rain | 21 mph S | 93% |
| Wednesday Night | 51°F | Light Rain Likely then Mostly Cloudy | 9 to 20 mph SW | 56% |
| Thursday | 62°F | Partly Sunny | 10 to 17 mph SW | 0% |
| Thursday Night | 47°F | Mostly Cloudy then Slight Chance Rain Showers | 6 to 10 mph SW | 20% |
| Friday | 55°F | Rain Showers Likely | 6 to 10 mph W | 58% |
| Friday Night | 38°F | Chance Rain Showers | 10 mph NW | 49% |
| Saturday | 51°F | Slight Chance Rain Showers then Mostly Cloudy | 8 to 12 mph NW | 18% |
| Saturday Night | 34°F | Mostly Cloudy | 2 to 7 mph W | 4% |
| 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.