Old Washington, OH Weather & Growing Conditions
Today
70°F
Light Rain
Rain after 11am. Mostly cloudy. High near 70, with temperatures falling to around 64 in the afternoon. South wind 1 to 10 mph, with gusts as high as 24 mph. Chance of precipitation is 100%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 70°F | Light Rain | 1 to 10 mph S | 98% |
| Tonight | 56°F | Light Rain | 5 to 12 mph SW | 99% |
| Thursday | 68°F | Partly Sunny | 5 to 10 mph SW | 0% |
| Thursday Night | 44°F | Partly Cloudy | 3 mph SW | 0% |
| Friday | 62°F | Chance Light Rain | 1 to 7 mph W | 28% |
| Friday Night | 39°F | Chance Light Rain | 5 mph W | 28% |
| Saturday | 54°F | Mostly Cloudy then Slight Chance Light Rain | 5 to 9 mph W | 21% |
| Saturday Night | 33°F | Slight Chance Light Rain then Mostly Cloudy | 5 mph W | 21% |
| Sunday | 56°F | Mostly Sunny | 2 to 9 mph W | 3% |
| Sunday Night | 31°F | Mostly Clear | 6 mph W | 5% |
| Monday | 58°F | Sunny | 2 to 8 mph W | 6% |
| Monday Night | 33°F | Mostly Clear | 5 mph SW | 5% |
| Tuesday | 62°F | Sunny | 5 to 9 mph SW | 3% |
| Tuesday Night | 33°F | Partly Cloudy | 1 to 5 mph W | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Old Washington, OH
Last spring frost
Apr 28
First fall frost
Oct 17
Growing season
172 days
Hardiness zone
6b
Explore more for Old Washington, OH: full frost dates · planting calendar · Ohio frost dates
Climate data from the nearest NOAA station, Cambridge, Oh (8.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.