Blue Ash, OH Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Blue Ash, a city in Hamilton County, Ohio.
Tonight
62°F
Mostly Cloudy then Showers And Thunderstorms Likely
A chance of rain showers between 1am and 4am, then showers and thunderstorms likely. Mostly cloudy, with a low around 62. Southeast wind 8 to 14 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast for Blue Ash
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 62°F | Mostly Cloudy then Showers And Thunderstorms Likely | 8 to 14 mph SE | 70% |
| Wednesday | 68°F | Showers And Thunderstorms | 10 to 16 mph S | 99% |
| Wednesday Night | 52°F | Chance Rain Showers | 5 to 9 mph SW | 35% |
| Thursday | 66°F | Mostly Sunny | 5 to 12 mph SW | 0% |
| Thursday Night | 46°F | Partly Cloudy | 1 to 6 mph SW | 1% |
| Friday | 61°F | Partly Sunny | 1 to 8 mph NW | 6% |
| Friday Night | 41°F | Partly Cloudy | 7 mph NW | 14% |
| Saturday | 56°F | Mostly Sunny | 3 to 7 mph NW | 13% |
| Saturday Night | 37°F | Partly Cloudy | 0 to 3 mph NW | 10% |
| Sunday | 58°F | Mostly Sunny | 1 to 9 mph W | 8% |
| Sunday Night | 36°F | Partly Cloudy | 3 to 7 mph W | 14% |
| Monday | 60°F | Sunny | 3 to 10 mph W | 14% |
| Monday Night | 39°F | Mostly Clear | 7 mph SW | 10% |
| Tuesday | 64°F | Sunny | 6 to 10 mph W | 2% |
Forecast source: National Weather Service (api.weather.gov) for Blue Ash (39.246, -84.387). Updated through the day.
Growing snapshot for Blue Ash
Last spring frost
Apr 23
First fall frost
Oct 18
Growing season
177 days
Hardiness zone
6b
More local growing data for Blue Ash: nearby ZIP 45241 weather · frost dates · planting calendar · Ohio frost dates
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Climate data from the nearest NOAA station, Milford, Oh (8.9 mi from Blue Ash). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.