Dayton, OH Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Dayton, a city in Montgomery County, Ohio.
Tonight
62°F
Mostly Cloudy then Showers And Thunderstorms Likely
A chance of rain showers between 2am and 4am, then showers and thunderstorms likely. Mostly cloudy, with a low around 62. Southeast wind 12 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast for Dayton
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 62°F | Mostly Cloudy then Showers And Thunderstorms Likely | 12 to 15 mph SE | 65% |
| Wednesday | 70°F | Showers And Thunderstorms | 14 to 17 mph S | 100% |
| Wednesday Night | 51°F | Chance Rain Showers | 6 to 14 mph SW | 36% |
| Thursday | 67°F | Mostly Sunny | 6 to 14 mph SW | 0% |
| Thursday Night | 46°F | Partly Cloudy | 2 to 7 mph W | 1% |
| Friday | 62°F | Partly Sunny | 2 to 9 mph NW | 10% |
| Friday Night | 40°F | Partly Cloudy | 6 to 9 mph NW | 12% |
| Saturday | 57°F | Slight Chance Light Rain | 8 mph NW | 18% |
| Saturday Night | 36°F | Partly Cloudy | 2 to 6 mph W | 10% |
| Sunday | 59°F | Mostly Sunny | 2 to 10 mph W | 13% |
| Sunday Night | 35°F | Partly Cloudy | 5 to 10 mph W | 13% |
| Monday | 61°F | Slight Chance Light Rain | 5 to 12 mph W | 15% |
| Monday Night | 39°F | Mostly Clear | 7 to 10 mph SW | 12% |
| Tuesday | 65°F | Sunny | 8 to 12 mph W | 3% |
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
Nearby towns & communities
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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 Nov 4, 2026.