Coldwater, OH Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Coldwater, a village in Mercer County, Ohio.
This Afternoon
77°F
Sunny
Sunny, with a high near 77. South wind around 13 mph.
7-day forecast for Coldwater
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 77°F | Sunny | 13 mph S | 2% |
| Tonight | 63°F | Mostly Cloudy then Rain Showers | 10 to 16 mph S | 75% |
| Wednesday | 70°F | Rain Showers | 12 to 18 mph S | 95% |
| Wednesday Night | 49°F | Mostly Cloudy | 6 to 10 mph SW | 12% |
| Thursday | 64°F | Mostly Sunny | 7 to 15 mph SW | 1% |
| Thursday Night | 45°F | Mostly Cloudy | 3 to 7 mph SW | 1% |
| Friday | 58°F | Chance Light Rain | 3 to 9 mph NW | 26% |
| Friday Night | 38°F | Slight Chance Light Rain then Mostly Cloudy | 5 to 8 mph NW | 19% |
| Saturday | 54°F | Slight Chance Light Rain | 5 to 8 mph NW | 15% |
| Saturday Night | 33°F | Partly Cloudy | 1 to 5 mph W | 5% |
| Sunday | 57°F | Mostly Sunny | 3 to 10 mph W | 14% |
| Sunday Night | 34°F | Partly Cloudy | 5 to 8 mph W | 14% |
| Monday | 59°F | Mostly Sunny | 5 to 12 mph W | 13% |
| Monday Night | 38°F | Mostly Clear | 9 mph SW | 11% |
Forecast source: National Weather Service (api.weather.gov) for Coldwater (40.483, -84.633). Updated through the day.
Growing snapshot for Coldwater
Last spring frost
Apr 27
First fall frost
Oct 19
Growing season
175 days
Hardiness zone
6a
More local growing data for Coldwater: nearby ZIP 45828 weather · frost dates · planting calendar · Ohio frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Celina 3 Ne, Oh (9.7 mi from Coldwater). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.