Dayton, OH Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Dayton, a city in Montgomery County, Ohio.
Overnight
60°F
Partly Cloudy
Partly cloudy, with a low around 60. East wind around 7 mph.
7-day forecast for Dayton
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 60°F | Partly Cloudy | 7 mph E | 2% |
| Saturday | 83°F | Partly Sunny then Chance Showers And Thunderstorms | 6 mph SE | 48% |
| Saturday Night | 68°F | Showers And Thunderstorms Likely | 7 mph S | 72% |
| Sunday | 83°F | Showers And Thunderstorms Likely | 5 to 8 mph W | 55% |
| Sunday Night | 62°F | Showers And Thunderstorms Likely | 9 to 14 mph NE | 55% |
| Monday | 75°F | Chance Showers And Thunderstorms | 9 to 13 mph NE | 54% |
| Monday Night | 58°F | Chance Showers And Thunderstorms | 10 to 15 mph NE | 47% |
| Tuesday | 73°F | Chance Showers And Thunderstorms | 13 mph NE | 40% |
| Tuesday Night | 59°F | Chance Showers And Thunderstorms | 8 to 14 mph NE | 40% |
| Wednesday | 72°F | Chance Rain Showers | 10 mph NE | 31% |
| Wednesday Night | 58°F | Slight Chance Rain Showers | 6 to 12 mph N | 20% |
| Thursday | 73°F | Partly Sunny | 7 to 10 mph N | 12% |
| Thursday Night | 57°F | Mostly Cloudy | 6 to 10 mph N | 12% |
| Friday | 73°F | Partly Sunny | 6 to 10 mph N | 7% |
Forecast source: National Weather Service (api.weather.gov) for Dayton (39.785, -84.200). Updated through the day.
Growing snapshot for Dayton
Last spring frost
Apr 18
First fall frost
Oct 25
Growing season
189 days
Hardiness zone
6b
More local growing data for Dayton: nearby ZIP 45405 weather · frost dates · planting calendar · Ohio frost dates
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Climate data from the nearest NOAA station, Dayton Mcd, Oh (2.4 mi from Dayton). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.